WO2021088079A1

WO2021088079A1 - Cross-carrier scheduling method and apparatus

Info

Publication number: WO2021088079A1
Application number: PCT/CN2019/116879
Authority: WO
Inventors: 铁晓磊; 花梦; 薛祎凡; 黄雯雯
Original assignee: 华为技术有限公司
Priority date: 2019-11-08
Filing date: 2019-11-08
Publication date: 2021-05-14

Abstract

Disclosed are a cross-carrier scheduling method and apparatus. A terminal device receives downlink control information sent by a network device on an activated partial bandwidth of a first carrier, wherein the downlink control information is used for indicating a first minimum time unit offset value, and the first minimum time unit offset value is a minimum time unit offset value of an activated partial bandwidth of a second carrier; and a validity time delay X of the first minimum time unit offset value is determined according to a second minimum time unit offset value and a first parameter Z, wherein the second minimum time unit offset value is a minimum time unit offset value of the activated partial bandwidth of the first carrier, and the first parameter Z is one of a plurality of parameters Z respectively corresponding to subcarrier intervals of activated partial bandwidths of a plurality of carriers. By using the solution of the present application, a validity time delay of a minimum time unit offset value of a scheduled carrier can be accurately determined during cross-carrier scheduling, thereby improving the reliability of communications.

Description

Cross-carrier scheduling method and device

Technical field

This application relates to the field of communication technology, and in particular to a cross-carrier scheduling method and device.

Background technique

In carrier aggregation (CA) technology, a network device can configure one or more downlink (DL) carriers and one or more uplink (UL) carriers to a terminal device. Among them, one or more downlink partial bandwidths (bandwidth part, BWP) can be configured on a downlink carrier, and similarly, one or more uplink BWPs can be configured on an uplink carrier. At the same time, multiple downlink carriers can be activated, but only one DL BWP in a downlink carrier is activated. Similarly, at the same time, multiple uplink carriers can be activated, but also in one uplink carrier. Only one UL BWP is activated. Network equipment and terminal equipment perform data or signal transmission on the activated DL BWP or UL BWP of the activated carrier. In the same-carrier scheduling, within the activated BWP, the network device can indicate the minimum available time unit offset value on the activated BWP to the terminal device through a physical downlink control channel (PDCCH).

During cross-carrier scheduling in a multi-carrier scenario, how to determine the effective time of the minimum available time unit offset value of the activated BWP of the scheduled carrier is a problem to be solved in this application.

Summary of the invention

The embodiment of the present application provides a cross-carrier scheduling solution.

In a first aspect, a cross-carrier scheduling method is provided, including: receiving downlink control information DCI on an activated partial bandwidth BWP of a first carrier, where the DCI is used to indicate a first minimum time unit offset value, and the second A minimum time unit offset value is the minimum time unit offset value of the activated BWP of the second carrier; and the first minimum time unit offset value is determined according to the second minimum time unit offset value and the first parameter Z Validity delay X, the second minimum time unit offset value is the minimum time unit offset value of the activated BWP of the first carrier, and the first parameter Z is the activated BWP respectively corresponding to multiple carriers The sub-carrier spacing is one of the multiple parameters Z of SCS.

During cross-carrier scheduling, the effective delay of the minimum time unit offset value of the scheduled carrier is accurately determined, which improves the reliability of communication.

In one implementation, the method further includes: after the effective delay X, communicating on the activated BWP of the second carrier according to the first minimum time unit offset value.

After both the terminal equipment and the network equipment have determined the minimum time unit offset value of the activated BWP of the scheduled carrier, they can communicate on the activated BWP of the scheduled carrier at the same time according to the minimum time unit offset value to improve Improve the reliability of communication.

In a second aspect, a cross-carrier scheduling method is provided, including: sending downlink control information DCI on an activated partial bandwidth BWP of a first carrier, where the DCI is used to indicate a first minimum time unit offset value, and the second A minimum time unit offset value is the minimum time unit offset value of the activated BWP of the second carrier; and the first minimum time unit offset value is determined according to the second minimum time unit offset value and the first parameter Z Validity delay X, the second minimum time unit offset value is the minimum time unit offset value of the activated BWP of the first carrier, and the first parameter Z is the activated BWP respectively corresponding to multiple carriers The sub-carrier spacing is one of the multiple parameters Z of SCS.

With reference to the first aspect, the second aspect, or any implementation of the first or second aspect, in another implementation, the start position of the X is the location where the DCI is located on the activated BWP of the first carrier The start position of the time unit; or the start position of X is the first one on the activated BWP on the second carrier that overlaps with the time unit where the DCI is on the activated BWP on the first carrier The starting position of the time unit; wherein, the time unit is any one of the following: a time slot, an orthogonal frequency division multiplexing symbol, and a mini-slot.

After the communication parties have pre-defined or negotiated the starting position of the effective delay, and according to the length of the effective delay, the effective starting position of the minimum time unit offset value of the activated BWP of the scheduled carrier can be determined, so that In the effective start position, the communication parties communicate according to the minimum time offset value, which improves the reliability of communication.

With reference to the first aspect, the second aspect, or any one of the first and second aspects, in another implementation, the first parameter Z is the maximum or minimum absolute time length corresponding to the plurality of parameters Z Or, the first parameter Z is the parameter Z with the largest or smallest conversion value on the same SCS among the plurality of parameters Z.

Because it is cross-carrier scheduling, the minimum time unit offset value of the activated BWP of the scheduled carrier is based on the minimum time unit offset value of the activated BWP of the scheduled carrier and the subcarrier spacing SCS of the activated BWP of multiple carriers One of the multiple parameters Z is determined, thereby improving the reliability of cross-carrier scheduling and saving the power consumption of the terminal equipment.

In a third aspect, a cross-carrier scheduling method is provided, including: determining a first minimum time unit offset value according to the minimum time unit offset value of the activated partial bandwidth BWP of multiple carriers; and the activated BWP on the first carrier The uplink receives downlink control information DCI, the DCI is used to schedule the physical downlink shared channel PDSCH or the physical uplink shared channel PUSCH transmitted on the activated BWP of the second carrier, and the DCI is used to indicate the time unit offset value and the The identification of the second carrier, the time unit offset value is greater than or equal to the first minimum time unit offset value; and according to the time unit offset value, receiving all data on the activated BWP of the second carrier The PDSCH or the PUSCH is transmitted.

The minimum time unit offset value during cross-carrier scheduling is determined according to the minimum time unit offset value of the activated partial bandwidth of multiple carriers, and the time unit offset of the activated BWP of the scheduled carrier indicated by the network device on the scheduling carrier The value is greater than or equal to the above-determined minimum time unit offset value, so that the terminal device can reduce unnecessary data buffering, and/or relax the processing time of the downlink physical control channel, and save the power consumption of the terminal device.

In a fourth aspect, a cross-carrier scheduling method is provided, including: determining a first minimum time unit offset value according to the minimum time unit offset value of the activated partial bandwidth BWP of multiple carriers; and the activated BWP on the first carrier The downlink control information DCI is sent uplink, the DCI is used to schedule the physical downlink shared channel PDSCH or the physical uplink shared channel PUSCH transmitted on the activated BWP of the second carrier, and the DCI is used to indicate the time unit offset value and the The identifier of the second carrier, the time unit offset value is greater than or equal to the first minimum time unit offset value; and according to the time unit offset value, sending all data on the activated BWP of the second carrier The PDSCH or receive the PUSCH.

With reference to the third and fourth aspects, in yet another implementation, determining the first minimum time unit offset value according to the minimum time unit offset value of the activated BWP of the multiple carriers includes: according to the activation of the first carrier Determine the first minimum time unit offset value of the second minimum time unit offset value of the BWP; or determine the minimum time unit offset value of the activated BWP with the largest subcarrier spacing SCS among the multiple carriers The first minimum time unit offset value; or the first minimum time unit offset value is determined according to the minimum time unit offset value of the maximum or minimum absolute time length corresponding to the minimum time unit offset value of the activated BWP of the multiple carriers Time unit offset value.

Because it is cross-carrier scheduling, the minimum time unit offset value of the activated BWP of the scheduled carrier is based on the minimum time unit offset value of the activated BWP of the scheduled carrier and/or the minimum time unit of the activated BWP of multiple carriers The offset value is determined, thereby improving the reliability of cross-carrier scheduling and saving the power consumption of terminal equipment.

With reference to the third and fourth aspects, in yet another implementation, the symbol position for transmitting the PDCCH is located after the first number of symbols in the time slot where the PDCCH is located; wherein the smallest BWP according to the activation of multiple carriers The time unit offset value determining the first minimum time unit offset value includes: determining the first minimum time unit offset according to the second minimum time unit offset value and the first value of the activated BWP of the first carrier value.

With reference to the third and fourth aspects, in yet another implementation, the SCS of the activated BWP of the first carrier is greater than the SCS of the activated BWP of the second carrier; wherein, according to the activated partial bandwidth of multiple carriers The minimum time unit offset value of the BWP determines the first minimum time unit offset value, including: determining the first minimum time unit offset value according to the first time unit n1, the second time unit n2, and the second value, The first time unit n1 is the first time unit on the second carrier that overlaps with the sum of the time unit where the DCI is located and the second minimum time unit offset value of the activated BWP of the first carrier, so The second time unit n2 is the first time unit on the second carrier that overlaps with the time unit where the DCI is located.

Because it is cross-carrier scheduling, the minimum time unit offset value of the activated BWP of the scheduled carrier is determined according to the minimum time unit offset value of the activated BWP of the time unit scheduling carrier where the DCI is located, thereby improving the cross-carrier scheduling Reliability, and saves the power consumption of terminal equipment.

In a fifth aspect, a cross-carrier scheduling apparatus is provided, which can implement the communication method of the first aspect, the third aspect, or any one of the foregoing implementations. For example, the cross-carrier scheduling device may be a chip (such as a baseband chip, or a communication chip, etc.). The above method can be implemented by software, hardware, or by hardware executing corresponding software.

In a possible implementation manner, the structure of the cross-carrier scheduling apparatus includes a processor and a memory; the processor is configured to support the apparatus to perform corresponding functions in the foregoing communication method. The memory is used to couple with the processor, and it stores the necessary programs (instructions) and/or data of the device. Optionally, the cross-carrier scheduling apparatus may further include a communication interface for supporting communication between the apparatus and other network elements.

In another possible implementation manner, the cross-carrier scheduling apparatus may include unit modules that perform corresponding functions or actions in the foregoing method.

In another possible implementation manner, a processor and a transceiver device are included, the processor is coupled to the transceiver device, and the processor is configured to execute a computer program or instruction to control the transceiver device to receive and receive information. Send; when the processor executes the computer program or instruction, the processor is also used to implement the above method. Exemplarily, the transceiver device may be a transceiver, a transceiver circuit or an input/output interface. When the cross-carrier scheduling device is a chip, the transceiving device is a transceiving circuit or an input/output interface.

When the cross-carrier scheduling 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 cross-carrier scheduling device is a cross-carrier scheduling device, the sending unit may be a transmitter or a transmitter; the receiving unit may be a receiver or a receiver.

In a sixth aspect, a cross-carrier scheduling apparatus is provided, which can implement the communication method described in the second aspect, the fourth aspect, or any one of the implementations. For example, the cross-carrier scheduling device may be a chip (such as a baseband chip, or a communication chip, etc.), and the foregoing method may be implemented by software, hardware, or by hardware executing corresponding software.

In a possible implementation manner, the structure of the cross-carrier scheduling apparatus includes a processor and a memory; the processor is configured to support the apparatus to perform corresponding functions in the foregoing communication method. The memory is used for coupling with the processor, and it stores the necessary programs (instructions) and data of the device. Optionally, the cross-carrier scheduling apparatus may further include a communication interface for supporting communication between the apparatus and other network elements.

In another possible implementation manner, the cross-carrier scheduling apparatus may include a unit module that performs corresponding actions in the foregoing method.

When the cross-carrier scheduling 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 cross-carrier scheduling device is a cross-carrier scheduling device, the receiving unit may be a receiver (also referred to as a receiver); and the sending unit may be a transmitter (also referred to as a transmitter).

It can be understood that, in the embodiment of the present application, the hardware parts responsible for input and output in the cross-carrier scheduling apparatus can be integrated.

In a seventh aspect, a computer-readable storage medium is provided, and the computer-readable storage medium stores instructions that, when run on a computer, cause the computer to execute the methods described in the above aspects.

In an eighth aspect, a computer program product containing instructions is provided, which when run on a computer, causes the computer to execute the methods described in the above aspects.

In a ninth aspect, a communication system is provided, including any of the foregoing cross-carrier scheduling devices.

Description of the drawings

Figure 1 is a schematic diagram of simultaneous slot scheduling and cross-slot scheduling;

Figure 2 is a schematic diagram of a communication system involved in this application;

FIG. 3 is a schematic flowchart of a cross-carrier scheduling method provided by an embodiment of this application;

4 is a schematic diagram of the effective delay of the minimum time unit offset value of the activated partial bandwidth of the scheduled carrier;

FIG. 5 is a schematic diagram of the number of time slots corresponding to different subcarrier intervals;

FIG. 6 is a schematic flowchart of another cross-carrier scheduling method provided by an embodiment of this application;

FIG. 7 is a schematic diagram of determining the minimum time unit offset value during cross-carrier scheduling;

FIG. 8 is a schematic structural diagram of a cross-carrier scheduling apparatus provided by an embodiment of this application;

FIG. 9 is a schematic structural diagram of another cross-carrier scheduling apparatus provided by an embodiment of this application;

FIG. 10 is a schematic structural diagram of another cross-carrier scheduling apparatus provided by an embodiment of this application;

FIG. 11 is a schematic structural diagram of another cross-carrier scheduling apparatus provided by an embodiment of this application;

FIG. 12 is a schematic structural diagram of a simplified terminal device provided by an embodiment of this application;

FIG. 13 is a schematic structural diagram of a simplified network device provided by an embodiment of this application.

Detailed ways

Several concepts involved in this application:

Time unit

The unit of the time unit includes: radio frame, subframe, time slot, mini-slot, orthogonal frequency division multiplexing (OFDM) symbol, microsecond, or millisecond. When the sub-carrier space (SCS) of the BWP is different, the time lengths of time slots, mini-slots, and OFDM symbols are different.

Time unit offset

For downlink scheduling, the time unit offset value refers to the time offset value between the PDCCH and the scheduled physical downlink shared channel (PDSCH). Taking the time unit as a time slot as an example, the time slot offset value refers to the time slot offset value between the PDCCH and the scheduled PDSCH, denoted as K0, K0=0 means that the PDCCH and the scheduled PDSCH are in the same time slot . K0﹥0 means that the PDCCH and the scheduled PDSCH are not in the same time slot. As shown in the schematic diagram of simultaneous slot scheduling and cross-slot scheduling as shown in Fig. 1, as shown in the left figure of Fig. 1, K0=0, which is simultaneous slot scheduling. The terminal device detects PDCCH in time slot i and receives PDSCH; As shown in the right diagram of Figure 1, K0=1, which is cross-slot scheduling. The terminal device detects the PDCCH in the time slot i, and receives the PDSCH scheduled by the PDCCH in the time slot i+1. When the network equipment schedules the PDSCH through the PDCCH, the control information carried by the PDCCH includes the time slot offset value of the PDSCH and the start symbol and length of the PDSCH in the time slot.

The scheduled PDSCH and the scheduled PDCCH are not in the same time slot, so that the terminal device can reduce unnecessary data buffering, and can relax the processing time of the PDCCH, thereby achieving the effect of saving power consumption.

For uplink scheduling, the time unit offset value refers to the time offset value between the PDCCH and the scheduled physical uplink shared channel (PUSCH). Taking the time unit as a time slot as an example, the time slot offset value refers to the time slot offset value between the PDCCH and the scheduled PUSCH, denoted as K2, and K2=0 means that the PDCCH and the scheduled PUSCH are in the same time slot. K2﹥0, indicating that the PDCCH and the scheduled PUSCH are not in the same time slot. When the network device schedules the PUSCH through the PDCCH, the control information carried by the PDCCH includes the time slot offset value of the PUSCH and the start symbol and length of the PUSCH in the time slot.

The scheduled PUSCH and the scheduled PDCCH are not in the same time slot, and the processing time of the PDCCH can be relaxed, thereby saving the power consumption of the terminal device.

Time domain resource allocation list (time domain resource allocation list)

The network device can configure the PDSCH time domain resource allocation list and the PUSCH time domain resource allocation list to the terminal device through radio resource control (radio resource control, RRC) signaling, and the time domain resources can also be predefined between the network device and the terminal device Distribution list. The time-domain resource allocation list may also be referred to as a time-domain resource allocation set. The time-domain resource allocation list of PDSCH includes the set of K0, and the start symbol and length set of PDSCH in a time slot; the time-domain resource allocation list of PUSCH includes the set of K2, and the set of PUSCH in a time slot. The set of starting symbol and length. When the network device schedules the PDSCH or PUSCH through the PDCCH, it selects one of the slot offset values and the start symbol and length in the slot in the time domain resource allocation set.

The value of K0 in the K0 set can be greater than or equal to 0, and there can be one or more values. For example, the slot offset value K0 can be configured as {0,1,2,3,4,5,6}. Similarly, the value of K2 in the K2 set can also be greater than or equal to 0, and there can be one or more values.

Minimum time unit offset value

For downlink scheduling, the minimum time unit offset value refers to the minimum value available in the time unit offset value between the PDCCH and the scheduled PDSCH when the network device schedules the PDSCH through the PDCCH, and the difference between the PDCCH and the scheduled PDSCH The time unit offset value between time will not be less than the minimum time unit offset value. Taking the time unit as a time slot as an example, the minimum time slot offset value refers to the smallest available time slot offset value between the PDCCH and the scheduled PDSCH, and is recorded as the minimum time slot offset value minimum K0. The network device can configure one or two minimum K0s to the terminal device through RRC signaling. If the network device is not configured with minimum K0, it can default to minimum K0=0, that is, there is no restriction on K0, and the values in the K0 set are all valid.

For uplink scheduling, the minimum time unit offset value refers to the minimum value available in the time unit offset value between the PDCCH and the scheduled PUSCH when the network device schedules the PUSCH through the PDCCH, and the difference between the PDCCH and the scheduled PUSCH The time unit offset value between time will not be less than the minimum time unit offset value. Taking the time unit as a time slot as an example, the minimum time slot offset value refers to the smallest available time slot offset value between the PDCCH and the scheduled PUSCH, which is recorded as the minimum time slot offset value minimum K2. The network device can configure one or two minimum K2s to the terminal device through RRC signaling. If the network device is not configured with minimum K2, it can default to minimum K2=0, that is, there is no restriction on K2, and the values in the K2 set are all valid.

Taking PDSCH as an example, the set of K0 is {0,1,2,3,4,5,6}, minimum K0=2, then when the network device schedules the PDSCH through the PDCCH, the K0 indicated by the PDCCH cannot be less than 2, and can only be A value in {2,3,4,5,6}.

If the RRC configures two minimum K0, the network device indicates one of the minimum K0 to the terminal device through the PDCCH. For example, the network device configures the minimum K0=1 or 2, and the network device then indicates the minimum K0=1 to the terminal device through the PDCCH. The network equipment and terminal equipment consider that K0 smaller than the minimum K0 in the K0 set is invalid, that is, K0 smaller than the minimum K0 in the K0 set cannot be scheduled. The network device indicates minimum K0=1, then K0 cannot be 0 when the PDCCH actually schedules the PDSCH.

If only one minimum K0 is configured, and the PDCCH indicates minimum K0, it indicates whether the data scheduling is restricted by the configured minimum K0. For example, if the network device is configured with only one minimum K0=1, it indicates whether the actual scheduling is restricted by the minimum K0=1. If If the indication is not constrained, the default minimum K0=0, and the values in the K0 set are all valid. If the indication is constrained, K0 should be greater than or equal to 1 in the actual scheduling.

For PUSCH minimum K2, similarly, the network device will indicate one of the minimum K2 (if two minimum K2s are configured) to the terminal device through the PDCCH or indicate whether the uplink scheduling is restricted by the configured minimum K2 (if a minimum K2 is configured) ).

The network device can jointly indicate minimum K0 and minimum K2 through the PDCCH, that is, there is an association between minimum K0 and minimum K2. When the PDCCH indicates minimum K0 changes, minimum K2 changes accordingly, and vice versa.

When there is downlink data transmission, the network device schedules the PDSCH to the terminal device through the PDCCH. The PDCCH indicates a time slot offset value in the K0 set, and the time slot offset value must be greater than or equal to the minimum K0. Correspondingly, the terminal device will periodically monitor the PDCCH. When minimum K0>0, the terminal device only needs to detect the PDCCH, and does not need to buffer the possible PDSCH in this time slot and relax the PDCCH processing time, thereby saving the power consumption of the terminal device. If the terminal device detects that the PDCCH schedules the PDSCH, the terminal device receives the PDSCH in the time slot K0 indicated by the PDCCH.

For uplink transmission, the network device schedules PUSCH to the terminal device through the PDCCH. The PDCCH indicates a time slot offset value in the K2 set, and the time slot offset value must be greater than or equal to minimum K2. Correspondingly, the terminal device periodically monitors PDCCH. When minimum K2>0, the terminal device can relax the PDCCH processing time, thereby saving the power consumption of the terminal device. If the terminal device detects that the PDCCH schedules the PUSCH, the terminal device sends the PUSCH to the network device in the time slot where K2 indicated by the PDCCH is located.

For downlink scheduling, after receiving the PDSCH, the terminal device feeds back hybrid automatic repeat request (HARQ)-acknowledgement (ACK) information to the network device to indicate whether the PDSCH is received correctly. For uplink scheduling, there is no HARQ-ACK feedback.

On the BWP activated in the downlink, the network device may indicate the BWP for the downlink activation or the minimum time unit offset value for subsequent scheduling on the BWP activated in the uplink to the terminal device through the PDCCH.

Figure 2 shows a schematic diagram of a communication system involved in this application. The communication system may include at least one network device 100 (only one is shown) and one or more terminal devices 200 connected to the network device 100.

The network device 100 may be a device that can communicate with the terminal device 200. The network device 100 may be any device with a wireless transceiving function. Including but not limited to: network equipment NodeB, evolved network equipment eNodeB, network equipment in the fifth generation (5G) communication system, network equipment or network equipment in the future communication system, and access node in the WiFi system , Wireless relay node, wireless backhaul node, etc. The network device 100 may also be a wireless controller in a cloud radio access network (cloud radio access network, CRAN) scenario. The network device 100 may also be a small station, a transmission reference point (TRP), and so on. The embodiment of the present application does not limit the specific technology and specific device form adopted by the network device.

The terminal device 200 is a device with wireless transceiver function, which can be deployed on land, including indoor or outdoor, handheld, wearable or vehicle-mounted; it can also be deployed on the water, such as a ship, etc.; it can also be deployed in the air, such as an airplane , Balloons and satellites first class. The terminal device may be a mobile phone (mobile phone), a tablet computer (pad), a computer with wireless transceiver function, virtual reality (VR) terminal equipment, augmented reality (AR) terminal equipment, industrial control ( Wireless terminals in industrial control, wireless terminals in self-driving, wireless terminals in remote medical, wireless terminals in smart grid, and transportation safety The wireless terminal in the smart city (smart city), the wireless terminal in the smart home (smart home), and so on. The embodiments of this application do not limit the application scenarios. Terminal equipment can sometimes be called user equipment (UE), access terminal equipment, terminal equipment unit, mobile station, mobile station, remote station, remote terminal equipment, mobile equipment, terminal, wireless communication equipment, Terminal equipment agents or terminal equipment devices, etc.

It should be noted that the terms "system" and "network" in the embodiments of the present application can be used interchangeably. "Multiple" refers to two or more than two. In view of this, "multiple" 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, indicating that there can be three types of relationships, for example, A and/or B, which can mean: A alone exists, A and B exist at the same time, and B exists alone.

An embodiment of the present application provides a cross-carrier scheduling solution. During cross-carrier scheduling, the effective delay of the minimum time unit offset value of the scheduled carrier is accurately determined, thereby improving the reliability of communication.

Please refer to FIG. 3, which is a schematic flowchart of a cross-carrier scheduling method provided by an embodiment of this application. Exemplarily, the method may include:

S101. The network device sends the DCI on the activated BWP of the first carrier.

Correspondingly, the terminal device receives the aforementioned DCI.

The DCI is used to indicate the first minimum time unit offset value, and the first minimum time unit offset value is the minimum time unit offset value of the activated BWP of the second carrier.

The network device in the communication system can configure one or more DL carriers and one or more UL carriers to the terminal device. The "carrier" in the present invention can be described as a "cell" instead. Among them, one or more downlink BWPs can be configured on a DL carrier; similarly, one or more uplink BWPs can be configured on a UL carrier. At the same time, multiple DL carriers can be activated, but only one DL BWP in a DL carrier is activated; similarly, at the same time, there can be multiple UL carriers that are activated, but also in one UL carrier. Only one UL BWP is activated. Network equipment and terminal equipment perform data or signal transmission on the activated DL BWP and UL BWP. On the activated BWP, the network device can indicate the minimum available time unit offset value on the activated BWP to the terminal device through the PDCCH. When multiple BWPs are configured on a carrier, the network device can also instruct the terminal device to switch the activated DL BWP or UL BWP in the carrier through the PDCCH. The network device may also schedule PDSCH or PUSCH transmission of another carrier (the second carrier or called the scheduled carrier) on the activated BWP of one carrier (the first carrier or called the scheduled carrier).

The first minimum time unit offset value of the activated BWP of the second carrier (scheduled carrier) may be different from the second minimum time unit offset value of the activated BWP of the first carrier (scheduled carrier). In this embodiment, the DCI is used to indicate the first minimum time unit offset value, and the first minimum time unit offset value is the minimum time unit offset value of the activated BWP of the second carrier. In downlink scheduling, the first minimum time unit offset value is the minimum value of the time unit offset values between the scheduled PDSCH and the scheduled PDCCH; in uplink scheduling, the first minimum time unit offset The value is the smallest value among the time unit offset values between the scheduled PUSCH and the scheduled PDCCH. Specifically, the network device sends the DCI on the activated BWP of the first carrier. The DCI is carried on the PDCCH. The DCI is used to schedule the terminal equipment to receive the PDSCH on the activated BWP of the second carrier, or to schedule the terminal equipment to transmit the PUSCH on the activated BWP of the second carrier. In a multi-carrier scenario, the second carrier may be a carrier other than the first carrier, or may be the first carrier.

S102. The terminal device and the network device determine the effective delay X of the first minimum time unit offset value according to the second minimum time unit offset value and the first parameter Z.

Wherein, the second minimum time unit offset value is the minimum time unit offset value of the activated BWP of the first carrier, and the first parameter Z is a plurality of parameters corresponding to the subcarrier spacing SCS of the activated BWP of the multiple carriers. One of Z.

As shown in FIG. 4, it is a schematic diagram of the effective delay of the minimum time unit offset value of the activated partial bandwidth of the scheduled carrier. For example, the network device may indicate through DCI on the activated BWP of CC1 that the minimum time unit offset value of the activated BWP of CC2 minimum K0 is minK0_cc2. Among them, the currently valid minimum time unit offset value minimum K0 on the activated BWP of CC1 is recorded as minK0_cc1. Since it takes a period of time for the terminal device to detect the PDCCH and decode the PDCCH, and if the minimum K0 changes, the terminal device needs a period of time to adjust parameters, so it takes a period of time for the minK0_cc2 of the activated BWP of CC2 to start valid for the DCI indicated by the distance. This period of time can be called the effective delay X. That is, minK0_cc2 becomes effective after the effective delay X.

Since during cross-carrier scheduling, the network device can indicate the minimum time unit offset value of any other possible carrier through the first carrier, and the terminal device needs to decode the content of the DCI to further adjust the minimum time unit on the corresponding carrier. Therefore, In cross-carrier scheduling, the effective delay X is associated with the parameter Z of multiple carriers participating in the scheduling and/or being scheduled. Specifically, the terminal device and the network device may determine the effective delay X of the first minimum time unit offset value according to the second minimum time unit offset value and the first parameter Z. The second minimum time unit offset value is the minimum time unit offset value of the activated BWP of the first carrier, and the first parameter Z is one of the multiple parameters Z of the SCS corresponding to the activated BWP of the multiple carriers.

In addition, since the effective delay X is a time period, the starting position of X can also be determined according to any of the following implementation methods:

In an implementation, the starting position of X may be the starting position of the time unit where the DCI on the activated BWP of the first carrier is located. The time unit may be any one of a time slot, a mini-slot, and an orthogonal frequency division multiplexing symbol. As shown in Figure 4, the network device sends DCI in time slot n of CC1, and the starting position of X may be the starting position of time slot n of CC1.

In another implementation, the start position of X may also be the start position of the first time unit on the activated BWP of the second carrier that overlaps with the time unit of the DCI on the activated BWP of the first carrier. The time unit may be any one of a time slot, a mini-slot, and an orthogonal frequency division multiplexing symbol. Here, the specific time unit of the "time unit in which the DCI is located" may be different from the specific time unit of the "first time unit". For example, "the time unit where the DCI is located" and "the first time unit" are both time slots; for another example, "the time unit where the DCI is located" is a symbol, and the "first time unit" is a time slot. In an example, the start position of X may be the start position of the first time slot on the activated BWP of the second carrier that overlaps with the time slot of the DCI on the activated BWP of the first carrier. As shown in Figure 4, the first time slot on CC2 that overlaps with time slot n of CC1 is time slot m. In another example, the start position of X may also be the start position of the first time slot on the activated BWP of the second carrier that overlaps with the symbol of the DCI on the activated BWP of the first carrier. As shown in Figure 4, the first time slot on CC2 that overlaps with the symbol position of the DCI of CC1 is time slot m.

Of course, the embodiment of the present application does not limit the starting position of the effective delay X.

Further, the method may also include:

S103. After the effective delay X, the terminal device and the network device communicate according to the first minimum time unit offset value on the activated BWP of the second carrier.

After determining the starting position of the effective delay X and the time length X of the effective delay, the starting position at which the first minimum time unit offset value becomes effective can be determined. At the starting position where the first minimum time unit offset value becomes effective, the terminal device and the network device may communicate according to the first minimum time unit offset value on the activated BWP of the second carrier.

Specifically, in the communication process, the network device may also schedule the PDSCH or PUSCH on the activated BWP of the second carrier through DCI on the activated BWP of the first carrier, or pass through the activated BWP of the second carrier The DCI schedules the PDSCH or PUSCH on the activated BWP of the second carrier or on the activated BWP of other scheduled carriers. The time unit offset value for scheduling the PDSCH or PUSCH is greater than or equal to the first minimum time unit offset value. After sending the DCI, the network device sends the PDSCH or receives the PUSCH at the time domain resource position offset from the PDCCH interval time unit on the activated BWP of the second carrier; and the terminal device sends the PDSCH or receives the PUSCH on the second carrier after receiving the DCI The PDSCH is received or the PUSCH is transmitted at the time domain resource position that is offset from the PDCCH interval time unit on the activated BWP of the scheduled carrier or the activated BWP of other scheduled carriers.

According to the cross-carrier scheduling method provided by the embodiment of the present application, during cross-carrier scheduling, the effective delay of the minimum time unit offset value of the scheduled carrier is accurately determined, which improves the reliability of communication.

The following describes in detail how to determine the effective delay X:

First, simply take the minimum time unit offset value of the activated BWP of the carrier CC2 indicated by the network equipment on the activated BWP of the carrier CC1 as an example to describe how to determine the effective delay X. The network device instructs the minimum K0 of the activated BWP of CC2 to be minK0_cc2 on the activated BWP of CC1 through DCI, or the network device instructs the minimum K2 of the activated BWP of CC2 to be minK2_cc2 through the DCI on the activated BWP of CC1. Among them, the minimum K0 currently valid on the activated BWP of CC1 is recorded as minK0_cc1. The DCI may also include a carrier identifier, which is used to determine the identifier of CC2. Correspondingly, the terminal device receives the DCI on the activated BWP of CC1.

The network device and the terminal device determine the effective delay X of minK0_cc2 or minK2_cc2. Among them, the starting position of the effective delay X can refer to the above description. The time length of the effective delay X is max(Y,Z), where Y is the current effective minimum K0 on the activated BWP of the scheduling carrier (ie CC1), that is, minK0_cc1, and Z is the time corresponding to the SCS of the activated BWP of the carrier The number of gaps. The corresponding relationship between the parameter Z corresponding to SCS and SCS and the absolute time length corresponding to Z is shown in Table 1 below. In Table 1, the value of Z is an example, and the embodiment of the application does not limit the value of Z:

Table 1 Correspondence between the Z corresponding to SCS and SCS and the absolute time length corresponding to this Z

Among them, μ represents the sub-carrier spacing of the activated BWP of the carrier, when μ=0, SCS=15kHz; when μ=1, SCS=30kHz; when μ=2, SCS=60kHz; when μ=3, SCS= 120kHz. Z is the number of time slots corresponding to SCS, for example, when μ=0, when SCS is 15kHz, the corresponding Z is 1 time slot with SCS of 15kHz; when μ=1, when SCS is 30kHz, the corresponding Z is SCS When μ=2, when SCS is 60kHz, the corresponding Z is 2 timeslots with SCS 60kHz; when μ=30, when SCS is 120kHz, the corresponding Z is 2 when SCS is 120kHz Time slots. In combination with the schematic diagram of time slot lengths corresponding to different subcarrier intervals shown in FIG. 5, the SCS is different, and accordingly, the absolute time length corresponding to the number of each time slot is also different. For example, when the SCS is 15kHz, the absolute time length corresponding to the number of 1 time slot (14 orthogonal frequency division multiplexing symbols) is 1ms; when the SCS is 30kHz, the number of 1 time slot (14 orthogonal frequency division multiplexing symbols) The absolute time length corresponding to the multiplexing symbol) is 0.5ms; when the SCS is 60kHz, the number of 1 time slot (14 orthogonal frequency division multiplexing symbols) corresponds to the absolute time length of 0.25ms, then 2 time slots correspond to The absolute time length of is 0.5ms; and so on, when the SCS is 120kHz, the number of 1 time slot (14 orthogonal frequency division multiplexing symbols) corresponds to the absolute time length of 0.125ms, then 2 time slots correspond to The absolute time length is 0.25ms.

The above briefly describes how the network device determines the effective delay X when the minimum time unit offset value of the activated BWP of the carrier CC2 is indicated on the activated BWP of the carrier CC1. In fact, in the CA scenario, the network equipment can configure multiple carriers for the terminal equipment (in addition to CC2, there can also be CC3, CC4, ...), and the sub-carrier spacing of the activated BWP of these carriers can be different. Therefore, the network The device and the terminal device need to have the same understanding of which carrier's sub-carrier spacing is referenced by the value of Z.

In an implementation, the first parameter Z is one of the multiple parameters Z of the sub-carrier spacing SCS of the activated BWP corresponding to the multiple carriers, and the first parameter Z may be the absolute time length corresponding to the multiple parameters Z The largest or smallest parameter Z. Among them, multiple carriers are all activated downlink carriers of the terminal equipment; or multiple carriers are all activated uplink carriers of the terminal equipment; or multiple carriers are all the downlink carriers that the terminal equipment can schedule by the same carrier (for example, the first carrier) Carrier or uplink carrier. The descriptions are as follows:

Specifically, Z is defined as the parameter Z with the largest absolute time length corresponding to the plurality of parameters Z. For example, two parameters Z are included: μ=0 of CC1, corresponding Z is 1 time slot of 15kHz (corresponding to 1ms); μ=1 of CC2, corresponding Z is 1 time slot of 30kHz (corresponding to 0.5ms). According to the absolute time length corresponding to Z, the parameter Z with the largest absolute time length is selected. Then, in the CA scenario, the final Z is a time slot of 15 kHz. The unit of Z is the number of time slots.

Thus, in the downlink multi-carrier scenario,

_{That is, Z is converted to the number of time slots corresponding to the subcarrier interval size (μ pdcch} ) of the activated BWP of the scheduling carrier (the first carrier), and the final time unit of X is the subcarrier interval of the activated BWP of the scheduling carrier (the first carrier) The number of time slots corresponding to the size. Where Z is the value corresponding to the sub-carrier interval size μ ₀ _{, μ 0} is the sub-carrier interval size of the carrier with the largest absolute time length corresponding to Z, and μ _pdcch is the sub-carrier interval of the activated BWP of the scheduling carrier (the first carrier).

In addition, both Y and Z can be converted into the number of time slots corresponding to the _{subcarrier interval (μ pdsch) of the activated BWP of the scheduled carrier (second carrier), thereby}

The time unit of X is the number of time slots corresponding to the subcarrier interval of the activated BWP of the scheduled carrier (the second carrier).

Similarly, in the uplink multi-carrier scenario,

_{That is, Z is converted to the number of time slots corresponding to the subcarrier interval size (μ pdcch} ) of the activated BWP of the scheduling carrier (the first carrier), and the final time unit of X is the subcarrier interval of the activated BWP of the scheduling carrier (the first carrier) The number of time slots corresponding to the size. Among them, Z is the number of time slots corresponding to the _{subcarrier interval size μ 0} _{, and μ 0} is the subcarrier interval size of the carrier with the largest absolute time length corresponding to Z.

In addition, both Y and Z can be converted into the number of time slots corresponding to the _{subcarrier interval (μ pusch) of the activated BWP of the scheduled carrier (second carrier), thereby}

Z is defined as the parameter Z with the smallest absolute time length corresponding to the plurality of parameters Z. For example, it includes two parameters Z: μ=0 of CC2, corresponding Z is 1 time slot of 15kHz (corresponding to 1ms); μ=1 of CC3, corresponding Z is 1 time slot of 30kHz (corresponding to 0.5ms). According to the absolute time length corresponding to Z, the parameter Z with the smallest absolute time length is selected. Then, in the CA scenario, the final Z is a time slot of 30 kHz.

Thus, in the downlink multi-carrier scenario,

_{That is, Z is converted to the number of time slots corresponding to the subcarrier interval size (μ pdcch} ) of the activated BWP of the scheduling carrier (the first carrier), and the final time unit of X is the subcarrier interval of the activated BWP of the scheduling carrier (the first carrier) The number of time slots corresponding to the size. Where Z is the value corresponding to the sub-carrier interval size μ ₀ _{, and μ 0} is the sub-carrier interval size of the carrier with the smallest absolute time length corresponding to Z.

Similarly, in the uplink multi-carrier scenario,

_{That is, Z is converted to the number of time slots corresponding to the subcarrier interval size (μ pdcch} ) of the activated BWP of the scheduling carrier (the first carrier), and the final time unit of X is the subcarrier interval of the activated BWP of the scheduling carrier (the first carrier) The number of time slots corresponding to the size. Among them, Z is the number of time slots corresponding to the _{subcarrier interval size μ 0} _{, and μ 0} is the subcarrier interval size of the carrier with the smallest absolute time length corresponding to Z.

In another implementation, the first parameter Z is one of the multiple parameters Z corresponding to the sub-carrier spacing SCS of the activated BWP of the multiple carriers, and the first parameter Z may be one of the multiple parameters Z in the same SCS. The parameter Z with the maximum or minimum conversion value on the above is the conversion value after converting the Z corresponding to different SCS to the same SCS to compare, and select the Z corresponding to the maximum or minimum conversion value. The descriptions are as follows:

The first parameter Z is the parameter Z with the largest conversion value on the same SCS among the plurality of parameters Z.

Thus, in the downlink multi-carrier scenario, X is expressed as

i is the ID of multiple carriers: 0,1,2,...; Zi is the Z value corresponding to the SCS of the activated BWP of carrier i; the time unit of X is the subcarrier spacing of the activated BWP of the scheduled carrier (the first carrier) The number of corresponding time slots.

Similarly, in the uplink multi-carrier scenario, X is expressed as

i is the ID of multiple carriers: 0,1,2,...; Zi is the Z value corresponding to the SCS of the activated BWP of carrier i; the time unit of X is the subcarrier interval of the activated BWP of the scheduled carrier (second carrier) The number of time slots corresponding to the size.

The first parameter Z is the parameter Z with the smallest conversion value on the same SCS among the plurality of parameters Z.

Specifically, in the downlink multi-carrier scenario, X is expressed as

That is, Z _i is converted to the number of time slots corresponding to the sub-carrier interval of the activated BWP of the scheduling carrier (the first carrier), i is the ID of multiple carriers: 0, 1, 2, ...; Zi is the carrier i The SCS that activates the BWP corresponds to the Z value. The time unit of X is the number of time slots corresponding to the subcarrier interval size of the activated BWP of the scheduling carrier (the first carrier).

In addition, Y and Z can also be converted to the number of time slots corresponding to the subcarrier interval of the activated BWP of the scheduled carrier (the second carrier), thereby

That is, all Z _i are converted to the number of time slots corresponding to the subcarrier interval of the activated BWP of the scheduled carrier (second carrier), and Z is the parameter Z with the smallest conversion value on the same SCS among the multiple parameters Z. The time unit of X is the number of time slots corresponding to the subcarrier interval of the activated BWP of the scheduled carrier (the second carrier).

Similarly, in the uplink multi-carrier scenario, X is expressed as

That is, all Z _i are converted to the number of time slots corresponding to the subcarrier interval of the activated BWP of the scheduling carrier (the first carrier), and Z is the parameter Z with the smallest conversion value on the same SCS among the multiple parameters Z. i is the ID of multiple carriers: 0,1,2,...; Zi is the Z value corresponding to the SCS of the activated BWP of carrier i.

Another embodiment of the present application provides a cross-carrier scheduling method. The minimum time unit offset value during cross-carrier scheduling is determined according to the minimum time unit offset value of the activated partial bandwidth of multiple carriers. The network device is scheduling the carrier The time unit offset value of the activated BWP of the scheduled carrier indicated above is greater than or equal to the minimum time unit offset value determined above, so that the terminal device can reduce unnecessary data buffering and/or relax the downlink physical control channel Processing time saves the power consumption of terminal equipment.

Please refer to FIG. 6, which is a schematic flowchart of another cross-carrier scheduling method provided by an embodiment of this application. Exemplarily, the method may include:

S201. The network device and the terminal device determine the first minimum time unit offset value according to the minimum time unit offset value of the activated BWP of the multiple carriers.

In a multi-carrier scenario, the network device may configure a minimum time unit offset value for each BWP of each carrier, and the minimum time unit offset value of each BWP of each carrier may be different. Due to cross-carrier scheduling, network equipment can schedule any other possible carrier through the scheduling carrier. The power saving of the terminal equipment is associated with the minimum time unit offset value of the multiple carriers participating in the scheduling and/or scheduling. Therefore, the network The device and the terminal device determine the first minimum time unit offset value according to the minimum time unit offset value of the activated BWP of the multiple carriers.

Among them, the multiple carriers may be all the activated downlink carriers of the terminal equipment; or the multiple carriers may be all the activated uplink carriers of the terminal equipment; or the multiple carriers may be all the carriers that can be scheduled by the same carrier (for example, the first carrier). Downlink carrier or uplink carrier.

Specifically, in one implementation, the first minimum time unit offset value may be determined according to the second minimum time unit offset value of the activated BWP of the first carrier.

In specific implementation, the network device configures the minimum time unit offset value for each BWP of each carrier. The time slot length of the minimum time unit offset value is the time slot length corresponding to the SCS of the BWP of the corresponding carrier, or the time slot corresponding to the reference SCS The slot length, for example, the reference SCS is the maximum SCS of the activated BWP in multiple carriers. In this embodiment, "carrier" can be described as "cell". The minimum unit offset value of the first carrier (CC1) or the activated BWP of the first cell is the second minimum time unit offset value, if it is used for downlink The minimum unit offset value for scheduling is minimum K0, which is recorded as minK0 _CC1 , and if it is the minimum unit offset value used for uplink scheduling, it is minimum K2, which is recorded as minK2 _CC1 .

Take the following row scheduling as an example. As shown in Figure 7, the network device uses DCI to schedule the PDSCH to the terminal device on the activated BWP of the first carrier (CC1). The DCI can include a carrier identifier to indicate which carrier the scheduled PDSCH is on. For example, the PDSCH is on the second carrier (CC2). In a multi-carrier scenario, the second carrier may be a carrier other than the first carrier, or may be the first carrier. Wherein, the K0 indicated by the DCI should be greater than or equal to the first minimum time unit offset value, which is determined according to the minimum K0 of the activated BWP of the first carrier (scheduling carrier CC1). When the SCS of the activated BWP of CC1 and the SCS of the activated BWP of CC2 are different, the first minimum time unit offset value is based on the minimum K0 of the activated BWP of the first carrier (scheduling carrier CC1), and the value of the activated BWP of the first carrier. The SCS and the SCS of the activated BWP of the second carrier are determined, and the first minimum time unit offset value is

Wherein, _μpdsch represents the SCS of the activated BWP of the second carrier, and _μpdcch represents the SCS of the activated BWP of the first carrier. That is, according to mink0 _CC1 , mink0 _{CC1 is} converted to the number of time slots corresponding to the SCS of the activated BWP of CC2. K0 indicated by DCI should be greater than or equal to

If the time slot length of minimum K0 is defined as the time slot length corresponding to the reference SCS, the first minimum time unit offset value is based on the minimum K0 of the activated BWP of the first carrier (scheduling carrier CC1), and refers to the activation of the SCS and the second carrier The SCS of the BWP determines that the first minimum time unit offset value is

μ _ref represents the size of the reference SCS, for example, it can be the maximum SCS of the activated BWP in multiple carriers, that is, according to mink0 _CC1 , mink0 _{CC1 is} converted to the number of time slots corresponding to the SCS of the activated BWP of CC2, where minK0 _CC1 The length of the time slot refers to the length of the time slot corresponding to the SCS.

In another implementation, the first minimum time unit offset value may be determined according to the minimum time unit offset value of the activated BWP with the largest SCS among multiple carriers.

Specifically, the first minimum time unit offset value is determined by the minimum time unit offset value corresponding to the activated BWP with the largest SCS among the multiple carriers. Taking minimum K0 as an example, the first minimum time unit offset value is determined according to the minimum time unit offset value corresponding to the activated BWP with the largest SCS among multiple carriers and the SCS of the SCS and the second carrier, which can be expressed as

The plurality of carriers to the active minK0 maximum BWP SCS corresponding minimum K0, μ _ref represents the maximum SCS BWP plurality of active carriers. The K0 indicated by the DCI is greater than or equal to the first minimum time unit offset value.

Taking minimum K2 as an example, the first minimum time unit offset value is determined according to the minimum time unit offset value corresponding to the activated BWP with the largest SCS among multiple carriers and the SCS of the SCS and the second carrier, which can be expressed as

The plurality of carriers to the active minK2 maximum BWP SCS corresponding minimum K2, μ _ref represents the maximum SCS BWP plurality of active carriers. The K2 indicated by the DCI is greater than or equal to the first minimum time unit offset value.

In yet another implementation, the first minimum time unit offset value may be determined according to the minimum time unit offset value with the largest absolute time length corresponding to the minimum time unit offset value of the activated BWP of the multiple carriers.

Specifically, the first minimum time unit offset value is determined by the minimum time offset value corresponding to the largest absolute time length of the minimum time offset value in the activated BWP of the multiple downlink carriers. Taking minimum K0 as an example, the first minimum time unit offset value is based on the minimum time unit offset value with the largest absolute time length corresponding to the minimum time unit offset value of the activated BWP of multiple downlink carriers, and the corresponding SCS and first The SCS determination of the two-carrier can be expressed as

μ0 represents the SCS of the BWP with the largest absolute time length corresponding to the smallest time unit offset value among the activated BWPs of multiple carriers. The minK0 is the minimum K0 corresponding to the maximum absolute time length of the minimum K0 in multiple downlink carriers. The K0 indicated by the DCI is greater than or equal to the first minimum time unit offset value.

Similarly, the first minimum time unit offset value is determined by the minimum K2 corresponding to the maximum absolute time length of the minimum K2 among the activated BWPs of multiple uplink carriers, and the first minimum time unit offset value is based on the activated BWP of multiple uplink carriers. The minimum time unit offset value with the largest absolute time length corresponding to the minimum time unit offset value and the corresponding SCS and SCS determination of the second carrier can be expressed as

The minK2 is the minimum K2 corresponding to the maximum absolute time length of the minimum K2 in the multiple uplink carriers. The K0 indicated by the DCI is greater than or equal to the first minimum time unit offset value.

In yet another implementation, the first minimum time unit offset value may be determined according to the minimum time unit offset value with the smallest absolute time length corresponding to the minimum time unit offset value of the activated BWP of the multiple carriers.

Specifically, the first minimum time unit offset value is determined by the minimum time offset value corresponding to the smallest absolute time length of the minimum time offset value among the activated BWPs of the multiple downlink carriers. Taking minimum K0 as an example, the first minimum time unit offset value is based on the minimum time unit offset value with the smallest absolute time length corresponding to the minimum time unit offset value of the activated BWP of multiple downlink carriers, and the corresponding SCS and first The SCS determination of the two-carrier can be expressed as

μ0 represents the SCS of the BWP with the smallest absolute time length corresponding to the smallest time unit offset value among the activated BWPs of multiple carriers. The minK0 is the minimum K0 corresponding to the minimum absolute time length of the minimum K0 in multiple downlink carriers. The K0 indicated by the DCI is greater than or equal to the first minimum time unit offset value.

Similarly, the first minimum time unit offset value is determined by the minimum K2 corresponding to the minimum absolute time length of the minimum K2 among the activated BWPs of multiple uplink carriers. The first minimum time unit offset value is based on the activated BWPs of multiple uplink carriers. The minimum time unit offset value of the minimum time unit offset value corresponding to the minimum time unit offset value with the smallest absolute time length and the corresponding SCS and the SCS determination of the second carrier can be expressed as

The minK2 is the minimum K2 corresponding to the minimum absolute time length of the minimum K2 among multiple uplink carriers. The K0 indicated by the DCI is greater than or equal to the first minimum time unit offset value.

Further, if the symbol position for transmitting the PDCCH is located after the first number of symbols in the time slot where the PDCCH is located, for example, the symbol position for transmitting the PDCCH is located after 3 symbols in one time slot. In order to relax the PDCCH processing time and save the power consumption of the terminal equipment, then:

In an implementation, the first minimum time unit offset value may be determined according to the second minimum time unit offset value and the first value of the activated BWP of the first carrier.

The first value can take any value. For example, if the first value is 1, the first minimum time unit offset value is determined according to the minimum time unit offset value of the activated BWP of the first carrier (scheduling carrier CC1) and the first value. When the SCS of the activated BWP of CC1 and the SCS of the activated BWP of CC2 are different, the first minimum time unit offset value is based on the minimum time unit offset value of the activated BWP of the first carrier (scheduling carrier CC1), the first value, The SCS of the activated BWP of the first carrier and the SCS of the activated BWP of the second carrier are determined. For example, the first value is 1, and the first minimum time unit offset value may be

Wherein, _μpdsch represents the SCS of the activated BWP of the second carrier, and _μpdcch represents the SCS of the activated BWP of the first carrier. K0 indicated by DCI is greater than or equal to

If the time slot length of minimum K0 is defined as the time slot length corresponding to the reference SCS, then K0 should be greater than or equal to

μ _ref represents the size of the reference SCS, for example, it may be the maximum SCSminK0 of the activated BWP in multiple carriers. _{The time slot length of CC1 is} the time slot length corresponding to the reference SCS.

Further, if the SCS of the activated BWP of the scheduled carrier (the first carrier) is greater than the SCS of the activated BWP of the scheduled carrier (the second carrier), then:

The first minimum time unit offset value may be determined according to the first time unit n1, the second time unit n2, and the second value. Wherein, the first time unit n1 is the first time unit on the second carrier that overlaps with the time unit of the time unit where the DCI is located and the second minimum time unit offset value of the activated BWP of the first carrier. The second time unit n2 is the first time unit on the second carrier that overlaps with the time unit where the DCI is located.

Specifically, if the carrier of the large SCS schedules the carrier of the small SCS, as shown in FIG. 7, CC2 schedules to transmit PDSCH or PUSCH on CC1. It is determined that the first minimum time unit offset value is n1-n2+delta, then K0 or K2 is greater than or equal to n1-n2+delta. Among them, n1 is the first time slot that overlaps the time slot of DCI+minimum K0 on the scheduled carrier (CC1) and the scheduled carrier (CC2), which can be expressed as

n is the time slot of the DCI on the scheduling carrier (CC2), and minimum K0 is the minimum time unit offset value of the scheduling carrier. Taking DCI4 as an example, the time slot of DCI+minimum K0 on CC2 is n+2, and the first time slot where time slot n+2 overlaps on CC1 is n1. n2 is the first time slot on the scheduled carrier that overlaps with the time slot of the DCI on the scheduled carrier, which is

Taking DCI4 as an example, the time slot n of DCI on CC2 is located, the first time slot on CC1 that overlaps with time slot n of CC2 is n2, and the time slot n on CC1 and CC2 is overlapped with the minimum K0 time slot. The first time slot is n1. delta is 0 or 1. If the time slot boundary of DCI+minimum K0 on the scheduling carrier is aligned with the time slot boundary of the scheduled carrier, it is 0, otherwise it is 1. Among them, in FIG. 7, DCI1 to DCI4 indicate that DCI can be sent at different time domain positions. Among them, DCI1 and DCI2 are carriers of small SCS scheduling large SCS carriers, and DCI3 and DCI4 are carriers of large SCS scheduling small SCS carriers.

S202. The network device sends the DCI on the activated BWP of the first carrier.

Correspondingly, the terminal device receives the aforementioned DCI.

After determining the first minimum time unit offset value during cross-carrier scheduling, the network device may schedule the PDSCH and PUSCH transmission on the second carrier on the activated BWP of the first carrier. Specifically, the network device sends the DCI on the activated BWP of the first carrier. The terminal device receives the DCI. Wherein, the DCI is used to schedule the PDSCH or PUSCH to be transmitted on the activated BWP of the second carrier. The DCI can indicate the time unit offset value and the identity of the second carrier, and the time unit offset value is greater than or equal to the first determined first carrier. The minimum time unit offset value.

Further, S203 or S204 can also be executed:

S203. The network device sends the PDSCH on the activated BWP of the second carrier according to the time unit offset value.

Correspondingly, the terminal device receives the above-mentioned PDSCH on the activated BWP of the second carrier according to the time unit offset value.

S204: The terminal device sends the PUSCH on the activated BWP of the second carrier according to the time unit offset value.

Correspondingly, the network device receives the aforementioned PUSCH on the activated BWP of the second carrier according to the time unit offset value.

According to a cross-carrier scheduling method provided by an embodiment of the present application, the minimum time unit offset value during cross-carrier scheduling is determined according to the minimum time unit offset value of the activated partial bandwidth of multiple carriers, and the network device is on the scheduling carrier The indicated time unit offset value of the activated BWP of the scheduled carrier is greater than or equal to the above-determined minimum time unit offset value, so that the terminal device can reduce unnecessary data buffering and/or relax the processing of the downlink physical control channel Time, saving the power consumption of the terminal equipment.

Based on the same concept of the foregoing cross-carrier scheduling method, as shown in FIG. 8, an embodiment of the present application further provides a cross-carrier scheduling device 1000, the device 1000 includes: a transceiver unit 11 and a processing unit 12; exemplarily:

The transceiver unit 11 is configured to receive downlink control information DCI on the activated partial bandwidth BWP of the first carrier, where the DCI is used to indicate a first minimum time unit offset value, and the first minimum time unit offset value is the first The minimum time unit offset value of the activated BWP of the two carriers;

The processing unit 12 is configured to determine the effective delay X of the first minimum time unit offset value according to the second minimum time unit offset value and the first parameter Z, and the second minimum time unit offset value is the The minimum time unit offset value of the activated BWP of the first carrier, and the first parameter Z is one of the multiple parameters Z of the sub-carrier spacing SCS of the activated BWP respectively corresponding to the multiple carriers.

In an implementation, the transceiving unit 11 is further configured to communicate according to the first minimum time unit offset value on the activated BWP of the second carrier after the effective delay X.

In another implementation, the start position of X is the start position of the time unit where the DCI is located on the activated BWP of the first carrier; or

The start position of X is the start position of the first time unit on the activated BWP on the second carrier that overlaps with the time unit where the DCI on the activated BWP on the first carrier is located;

Wherein, the time unit is any one of the following: a time slot, an orthogonal frequency division multiplexing symbol, and a mini-slot.

In another implementation, the first parameter Z is the parameter Z with the largest or smallest absolute time length corresponding to the plurality of parameters Z; or,

The first parameter Z is the parameter Z with the largest or smallest conversion value on the same SCS among the plurality of parameters Z.

For the functions of the above-mentioned transceiving unit 11 and processing unit 12, reference may be made to the relevant description of the terminal device in the embodiment shown in FIG. 3, which will not be repeated here.

According to the cross-carrier scheduling device provided by the embodiment of the present application, during cross-carrier scheduling, the effective delay of the minimum time unit offset value of the scheduled carrier is accurately determined, which improves the reliability of communication.

Based on the same concept of the foregoing cross-carrier scheduling method, as shown in FIG. 9, an embodiment of the present application further provides a cross-carrier scheduling device 2000. The device 2000 includes: a transceiver unit 21 and a processing unit 22; exemplarily:

The transceiver unit 21 is configured to send downlink control information DCI on the activated partial bandwidth BWP of the first carrier, where the DCI is used to indicate a first minimum time unit offset value, and the first minimum time unit offset value is the first The minimum time unit offset value of the activated BWP of the two carriers;

The processing unit 22 is configured to determine the effective delay X of the first minimum time unit offset value according to the second minimum time unit offset value and the first parameter Z, and the second minimum time unit offset value is the The minimum time unit offset value of the activated BWP of the first carrier, and the first parameter Z is one of the multiple parameters Z of the sub-carrier spacing SCS of the activated BWP respectively corresponding to the multiple carriers.

In an implementation, the transceiving unit 21 is further configured to communicate according to the first minimum time unit offset value on the activated BWP of the second carrier after the effective delay X.

For the functions of the above-mentioned transceiving unit 21 and processing unit 22, reference may be made to the relevant description of the network device in the embodiment shown in FIG. 3, which will not be repeated here.

According to the cross-carrier scheduling apparatus provided by the embodiment of the present application, during cross-carrier scheduling, the effective delay of the minimum time unit offset value of the scheduled carrier is accurately determined, which improves the reliability of communication.

Based on the same concept of the foregoing cross-carrier scheduling method, as shown in FIG. 10, an embodiment of the present application further provides a cross-carrier scheduling device 3000, which includes: a processing unit 31 and a transceiver unit 32; exemplarily:

The processing unit 31 is configured to determine the first minimum time unit offset value according to the minimum time unit offset value of the activated partial bandwidth BWP of the multiple carriers;

The transceiver unit 32 is configured to receive downlink control information DCI on the activated BWP of the first carrier, where the DCI is used to schedule the physical downlink shared channel PDSCH or the physical uplink shared channel PUSCH to be transmitted on the activated BWP of the second carrier, The DCI is used to indicate a time unit offset value and an identifier of the second carrier, and the time unit offset value is greater than or equal to the first minimum time unit offset value;

The transceiving unit 32 is further configured to receive the PDSCH or send the PUSCH on the activated BWP of the second carrier according to the time unit offset value.

In one implementation, the processing unit 31 is configured to determine the first minimum time unit offset value according to the second minimum time unit offset value of the activated BWP of the first carrier; or

The processing unit 31 is configured to determine the first minimum time unit offset value according to the minimum time unit offset value of the activated BWP with the largest subcarrier spacing SCS in the multiple carriers; or

The processing unit 31 is configured to determine the first minimum time unit according to the minimum time unit offset value of the maximum or minimum absolute time length corresponding to the minimum time unit offset value of the activated BWP of the multiple carriers The offset value.

In yet another implementation, the symbol position for transmitting the PDCCH is located after the first number of symbols in the time slot where the PDCCH is located;

The processing unit 31 is configured to determine the first minimum time unit offset value according to the second minimum time unit offset value and the first value of the activated BWP of the first carrier.

In yet another implementation, the SCS of the activated BWP of the first carrier is greater than the SCS of the activated BWP of the second carrier;

The processing unit 31 is configured to determine the first minimum time unit offset value according to a first time unit n1, a second time unit n2, and a second value, and the first time unit n1 is on the second carrier The first time unit that overlaps with the sum of the DCI time unit and the second minimum time unit offset value of the activated BWP of the first carrier, and the second time unit n2 is the second carrier The first time unit on which overlaps with the time unit where the DCI is located.

For the specific description of the functions of the foregoing processing unit 31 and the transceiver unit 32, reference may be made to the relevant description of the terminal device in the embodiment shown in FIG. 6, which will not be repeated here.

According to a cross-carrier scheduling apparatus provided by an embodiment of the present application, the minimum time unit offset value during cross-carrier scheduling is determined according to the minimum time unit offset value of the activated partial bandwidth of multiple carriers, and the network device is on the scheduling carrier The indicated time unit offset value of the activated BWP of the scheduled carrier is greater than or equal to the above-determined minimum time unit offset value, so that the device can reduce unnecessary data buffering and/or relax the processing of the downlink physical control channel Time, saving the power consumption of the device.

Based on the same concept of the foregoing cross-carrier scheduling method, as shown in FIG. 11, an embodiment of the present application further provides a cross-carrier scheduling device 4000, the device 4000 includes: a processing unit 41 and a transceiver unit 42; exemplarily:

The processing unit 41 is configured to determine the first minimum time unit offset value according to the minimum time unit offset value of the activated partial bandwidth BWP of the multiple carriers;

The transceiver unit 42 is configured to send downlink control information DCI on the activated BWP of the first carrier, and the DCI is used to schedule the physical downlink shared channel PDSCH or the physical uplink shared channel PUSCH to be transmitted on the activated BWP of the second carrier, The DCI is used to indicate a time unit offset value and an identifier of the second carrier, and the time unit offset value is greater than or equal to the first minimum time unit offset value;

The transceiver unit 42 is further configured to send the PDSCH or receive the PUSCH on the activated BWP of the second carrier according to the time unit offset value.

In one implementation, the processing unit 41 is configured to determine the first minimum time unit offset value according to the second minimum time unit offset value of the activated BWP of the first carrier; or

The processing unit 41 is configured to determine the first minimum time unit offset value according to the minimum time unit offset value of the activated BWP with the largest subcarrier spacing SCS in the multiple carriers; or

The processing unit 41 is configured to determine the first minimum time unit according to the minimum time unit offset value of the maximum or minimum absolute time length corresponding to the minimum time unit offset value of the activated BWP of the multiple carriers The offset value.

The processing unit 41 is configured to determine the first minimum time unit offset value according to the second minimum time unit offset value and the first value of the activated BWP of the first carrier.

The processing unit 41 is configured to determine the first minimum time unit offset value according to a first time unit n1, a second time unit n2, and a second value, and the first time unit n1 is on the second carrier The first time unit that overlaps with the sum of the DCI time unit and the second minimum time unit offset value of the activated BWP of the first carrier, and the second time unit n2 is the second carrier The first time unit on which overlaps with the time unit where the DCI is located.

For the specific description of the functions of the foregoing processing unit 41 and the transceiver unit 42, reference may be made to the relevant description of the network device in the embodiment shown in FIG. 6, which will not be repeated here.

According to a cross-carrier scheduling device provided by an embodiment of the present application, the minimum time unit offset value during cross-carrier scheduling is determined according to the minimum time unit offset value of the activated partial bandwidth of multiple carriers, and the device is on the scheduling carrier The indicated time unit offset value of the activated BWP of the scheduled carrier is greater than or equal to the above-determined minimum time unit offset value, so that the terminal device can reduce unnecessary data buffering and/or relax the processing of the downlink physical control channel Time, saving the power consumption of the terminal equipment.

An embodiment of the present application also provides a cross-carrier scheduling apparatus, which is used to execute the above-mentioned cross-carrier scheduling method, and may be the terminal equipment/network equipment in the above-mentioned method embodiment. Part or all of the foregoing cross-carrier scheduling methods can be implemented by hardware or software.

Optionally, the cross-carrier scheduling apparatus may be a chip or an integrated circuit during specific implementation.

Optionally, when part or all of the cross-carrier scheduling method in the foregoing embodiment is implemented by software, the cross-carrier scheduling apparatus includes: a processor for executing a program, and when the program is executed, the cross-carrier scheduling apparatus can To implement the cross-carrier scheduling method provided in the foregoing embodiment, the cross-carrier scheduling device may also include a memory for storing necessary programs. These related programs can be loaded in the memory when the cross-carrier scheduling device leaves the factory, or in Load into the memory when needed later.

Optionally, the foregoing memory may be a physically independent unit, or may be integrated with the processor.

Optionally, when part or all of the cross-carrier scheduling method in the foregoing embodiment is implemented by software, the cross-carrier scheduling apparatus may also only include a processor. The memory for storing the program is located outside the cross-carrier scheduling device, and the processor is connected to the memory through 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.

Optionally, the processor may include a hardware chip. The aforementioned hardware chip may be an application-specific integrated circuit (ASIC), a programmable logic device (PLD), or a combination thereof. The above-mentioned PLD may be a complex programmable logic device (CPLD), a field-programmable gate array (FPGA), a generic 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 non-volatile memory (non-volatile memory), such as flash memory (flash memory) , Hard disk drive (HDD) or solid-state drive (solid-state drive, SSD); the memory may also include a combination of the above types of memory.

Figure 12 shows a simplified schematic diagram of the structure of the terminal device. It is easy to understand and easy to illustrate. In FIG. 12, the terminal device uses a mobile phone as an example. As shown in FIG. 12, the terminal equipment includes a processor, and may also include a radio frequency circuit, an antenna, and an input and output device. Among them, the processor can be used to process the communication protocol and communication data, and can also be used to control the terminal device, execute the software program, and process the data of the software program. The terminal device may also include a memory. The memory is mainly used to store software programs and data. These related programs can be loaded into the memory when the communication device leaves the factory, or can be loaded into the memory when needed later. The radio frequency circuit is mainly used for the conversion of baseband signal and radio frequency signal and the processing of radio frequency signal. The antenna is mainly used to send and receive radio frequency signals in the form of electromagnetic waves. Input and output devices, such as touch screens, display screens, keyboards, etc., are mainly used to receive data input by users and output data to users. It should be noted that some types of terminal devices may not have input and output devices.

When data needs to be sent, the processor performs baseband processing on the data to be sent, and then outputs the baseband signal to the radio frequency circuit. The radio frequency circuit performs radio frequency processing on the baseband signal and sends the radio frequency signal to the outside in the form of electromagnetic waves through the antenna. When data is sent to the terminal device, the radio frequency circuit receives the radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor, and the processor converts the baseband signal into data and processes the data. For ease of description, only one memory and processor are shown in FIG. 12. In an actual terminal 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 storage device. The memory may be set independently of the processor or integrated with the processor, which is not limited in the embodiment of the present application.

In the embodiments of the present application, the antenna and radio frequency circuit with the transceiver function can be regarded as the receiving unit and the transmitting unit (also collectively referred to as the transceiver unit) of the terminal device, and the processor with the processing function can be regarded as the processing unit of the terminal device. . As shown in FIG. 12, the terminal device includes a receiving unit 51, a processing unit 52, and a sending unit 53. The receiving unit 51 may also be called a receiver, a receiver, a receiving circuit, etc., and the sending unit 53 may also be called a transmitter, a transmitter, a transmitter, a transmitting circuit, etc. The processing unit may also be called a processor, a processing board, a processing module, a processing device, and so on.

For example, in one embodiment, the receiving unit 51 is used to perform the functions of the terminal device in S101 and S103 in the embodiment shown in FIG. 3; the processing unit 52 is used to perform the function of the terminal device in S102 in the embodiment shown in FIG. 3; And the sending unit 53 is used to execute the function of the terminal device in S103 in the embodiment shown in FIG. 3.

For example, in another embodiment, the processing unit 52 is used to perform the function of the terminal device in S201 in the embodiment shown in FIG. 6; the receiving unit 51 is used to perform the function of the terminal device in S202 and S203 in the embodiment shown in FIG. ; And the sending unit 53 is used to perform the function of the terminal device in S204 in the embodiment shown in FIG. 6.

Figure 13 shows a simplified schematic diagram of the structure of a network device. The network equipment includes a radio frequency signal transceiver and conversion part and a 62 part, and the radio frequency signal transceiver and conversion part includes a receiving unit 61 part and a sending unit 63 part (also collectively referred to as a transceiver unit). The RF signal transceiver and conversion part is mainly used for the transceiver and the conversion of RF signals and baseband signals; the 62 part is mainly used for baseband processing and control of network equipment. The receiving unit 61 may also be called a receiver, a receiver, a receiving circuit, etc., and the sending unit 43 may also be called a transmitter, a transmitter, a transmitter, a transmitting circuit, etc. Part 62 is usually the control center of the network device, and can usually be referred to as a processing unit, which is used to control the network device to execute the steps performed by the network device in FIG. 3 and FIG. 6 above. For details, please refer to the description of the relevant part above.

Part 62 can include one or more single boards, and each single board can include one or more processors and one or more memories. The processor is used to read and execute the programs in the memory to realize the baseband processing function and the network equipment. control. If there are multiple boards, each board can be interconnected to increase processing capacity. As an optional implementation, multiple single boards may share one or more processors, or multiple single boards may share one or more memories, or multiple single boards may share one or more processing at the same time. Device.

For example, in one embodiment, the receiving unit 61 is used to perform the functions of the network equipment in S101 and S103 in the embodiment shown in FIG. 3; the processing unit 62 is used to perform the functions of the network equipment in S102 in the embodiment shown in FIG. 3; And the sending unit 63 is used to execute the function of the network device in S103 in the embodiment shown in FIG. 3.

For example, in another embodiment, the receiving unit 61 is used to perform the function of the network device in S204 in the embodiment shown in FIG. 6; the processing unit 62 is used to perform the function of the network device in S201 in the embodiment shown in FIG. 6; and The sending unit 63 is used to perform the functions of the network device in S202 and S203 in the embodiment shown in FIG. 6.

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

In the several embodiments provided in this application, it should be understood that the disclosed system, device, and method may be implemented in other ways. For example, the division of the unit is only a logical function division. In actual implementation, there can be other divisions. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not. carried out. The displayed or discussed mutual coupling, or direct coupling, or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical, or other forms.

The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.

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

Claims

A cross-carrier scheduling method is characterized in that it includes:

Receive downlink control information DCI on the activated partial bandwidth BWP of the first carrier, where the DCI is used to indicate the first minimum time unit offset value, and the first minimum time unit offset value is the activated BWP of the second carrier The minimum time unit offset value;

Determine the effective delay X of the first minimum time unit offset value according to the second minimum time unit offset value and the first parameter Z, and the second minimum time unit offset value is the activation time of the first carrier The minimum time unit offset value of the BWP, the first parameter Z is one of the multiple parameters Z of the sub-carrier spacing SCS of the activated BWP respectively corresponding to the multiple carriers.
The method according to claim 1, wherein the method further comprises:

After the effective delay X, communication is performed on the activated BWP of the second carrier according to the first minimum time unit offset value.
A cross-carrier scheduling method is characterized in that it includes:

Send downlink control information DCI on the activated partial bandwidth BWP of the first carrier, where the DCI is used to indicate the first minimum time unit offset value, and the first minimum time unit offset value is the activated BWP of the second carrier The minimum time unit offset value;

Determine the effective delay X of the first minimum time unit offset value according to the second minimum time unit offset value and the first parameter Z, and the second minimum time unit offset value is the activation time of the first carrier The minimum time unit offset value of the BWP, the first parameter Z is one of the multiple parameters Z of the sub-carrier spacing SCS of the activated BWP respectively corresponding to the multiple carriers.
The method according to claim 3, wherein the method further comprises:

After the effective delay X, communication is performed on the activated BWP of the second carrier according to the first minimum time unit offset value.
The method according to any one of claims 1 to 4, wherein the starting position of X is the starting position of the time unit where the DCI is located on the activated BWP of the first carrier; or

The start position of X is the start position of the first time unit on the activated BWP on the second carrier that overlaps the time unit where the DCI is on the activated BWP on the first carrier;

Wherein, the time unit is any one of the following: a time slot, an orthogonal frequency division multiplexing symbol, and a mini-slot.
The method according to any one of claims 1 to 5, wherein the first parameter Z is the parameter Z with the largest or smallest absolute time length corresponding to the plurality of parameters Z; or,

The first parameter Z is the parameter Z with the largest or smallest conversion value on the same SCS among the plurality of parameters Z.
A cross-carrier scheduling method is characterized in that it includes:

Determine the first minimum time unit offset value according to the minimum time unit offset value of the activated partial bandwidth BWP of the multiple carriers;

Receive downlink control information DCI on the activated BWP of the first carrier, where the DCI is used to schedule the physical downlink shared channel PDSCH or physical uplink shared channel PUSCH to be transmitted on the activated BWP of the second carrier, and the DCI is used to indicate A time unit offset value and an identifier of the second carrier, the time unit offset value is greater than or equal to the first minimum time unit offset value;

According to the time unit offset value, the PDSCH is received or the PUSCH is transmitted on the activated BWP of the second carrier.
A cross-carrier scheduling method is characterized in that it includes:

Determine the first minimum time unit offset value according to the minimum time unit offset value of the activated partial bandwidth BWP of the multiple carriers;

The downlink control information DCI is sent on the activated BWP of the first carrier, the DCI is used to schedule the physical downlink shared channel PDSCH or the physical uplink shared channel PUSCH transmitted on the activated BWP of the second carrier, and the DCI is used to indicate A time unit offset value and an identifier of the second carrier, the time unit offset value is greater than or equal to the first minimum time unit offset value;

According to the time unit offset value, the PDSCH is sent or the PUSCH is received on the activated BWP of the second carrier.
The method according to claim 7 or 8, wherein the determining the first minimum time unit offset value according to the minimum time unit offset value of the activated BWP of the multiple carriers comprises:

Determine the first minimum time unit offset value according to the second minimum time unit offset value of the activated BWP of the first carrier; or

Determine the first minimum time unit offset value according to the minimum time unit offset value of the activated BWP with the largest subcarrier spacing SCS among the multiple carriers; or

The first minimum time unit offset value is determined according to the minimum time unit offset value of the maximum or minimum absolute time length corresponding to the minimum time unit offset value of the activated BWP of the multiple carriers.
The method according to claim 7 or 8, wherein the symbol position for transmitting the PDCCH is located after the first number of symbols of the time slot in which the PDCCH is located;

Wherein, determining the first minimum time unit offset value according to the minimum time unit offset value of the activated BWP of the multiple carriers includes:

The first minimum time unit offset value is determined according to the second minimum time unit offset value and the first value of the activated BWP of the first carrier.
The method according to claim 7 or 8, wherein the SCS of the activated BWP of the first carrier is greater than the SCS of the activated BWP of the second carrier;

Wherein, determining the first minimum time unit offset value according to the minimum time unit offset value of the activated partial bandwidth BWP of multiple carriers includes:

The first minimum time unit offset value is determined according to the first time unit n1, the second time unit n2, and the second value, where the first time unit n1 is the time unit on the second carrier where the DCI is located And the first time unit that overlaps the sum of the second minimum time unit offset value of the activated BWP of the first carrier, and the second time unit n2 is the time on the second carrier where the DCI is The first time unit where the unit overlaps.
A cross-carrier scheduling device is characterized in that it comprises:

The transceiver unit is configured to receive downlink control information DCI on the activated partial bandwidth BWP of the first carrier, where the DCI is used to indicate a first minimum time unit offset value, and the first minimum time unit offset value is second The minimum time unit offset value of the activated BWP of the carrier;

The processing unit is configured to determine the effective delay X of the first minimum time unit offset value according to the second minimum time unit offset value and the first parameter Z, and the second minimum time unit offset value is the first The minimum time unit offset value of the activated BWP of one carrier, and the first parameter Z is one of the multiple parameters Z of the sub-carrier spacing SCS of the activated BWP respectively corresponding to the multiple carriers.
The apparatus according to claim 11, wherein the transceiving unit is further configured to, after the effective delay X, bias the activated BWP of the second carrier according to the first minimum time unit Shift value to communicate.
A cross-carrier scheduling device is characterized by comprising:

The transceiver unit is configured to send downlink control information DCI on the activated partial bandwidth BWP of the first carrier, where the DCI is used to indicate a first minimum time unit offset value, and the first minimum time unit offset value is second The minimum time unit offset value of the activated BWP of the carrier;

The processing unit is configured to determine the effective delay X of the first minimum time unit offset value according to the second minimum time unit offset value and the first parameter Z, and the second minimum time unit offset value is the first The minimum time unit offset value of the activated BWP of one carrier, and the first parameter Z is one of the multiple parameters Z of the sub-carrier spacing SCS of the activated BWP respectively corresponding to the multiple carriers.
The apparatus according to claim 14, wherein the transceiving unit is further configured to, after the effective delay X, bias the activated BWP of the second carrier according to the first minimum time unit Shift value to communicate.
The apparatus according to any one of claims 12 to 15, wherein the starting position of X is the starting position of the time unit where the DCI is located on the activated BWP of the first carrier; or

The start position of X is the start position of the first time unit on the activated BWP on the second carrier that overlaps the time unit where the DCI is on the activated BWP on the first carrier;

Wherein, the time unit is any one of the following: a time slot, an orthogonal frequency division multiplexing symbol, and a mini-slot.
The device according to any one of claims 12 to 16, wherein the first parameter Z is the parameter Z with the largest or smallest absolute time length corresponding to the plurality of parameters Z; or,

The first parameter Z is the parameter Z with the largest or smallest conversion value on the same SCS among the plurality of parameters Z.
A cross-carrier scheduling device is characterized by comprising:

A processing unit, configured to determine the first minimum time unit offset value according to the minimum time unit offset value of the activated partial bandwidth BWP of the multiple carriers;

The transceiver unit is configured to receive downlink control information DCI on the activated BWP of the first carrier, and the DCI is used to schedule the physical downlink shared channel PDSCH or physical uplink shared channel PUSCH to be transmitted on the activated BWP of the second carrier. The DCI is used to indicate a time unit offset value and an identifier of the second carrier, and the time unit offset value is greater than or equal to the first minimum time unit offset value;

The transceiver unit is further configured to receive the PDSCH or transmit the PUSCH on the activated BWP of the second carrier according to the time unit offset value.
A cross-carrier scheduling device is characterized by comprising:

A processing unit, configured to determine the first minimum time unit offset value according to the minimum time unit offset value of the activated partial bandwidth BWP of the multiple carriers;

The transceiver unit is used to send downlink control information DCI on the activated BWP of the first carrier. The DCI is used to schedule the physical downlink shared channel PDSCH or physical uplink shared channel PUSCH to be transmitted on the activated BWP of the second carrier. The DCI is used to indicate a time unit offset value and an identifier of the second carrier, and the time unit offset value is greater than or equal to the first minimum time unit offset value;

The transceiver unit is further configured to send the PDSCH or receive the PUSCH on the activated BWP of the second carrier according to the time unit offset value.
The device according to claim 18 or 19, characterized in that:

The processing unit is configured to determine the first minimum time unit offset value according to the second minimum time unit offset value of the activated BWP of the first carrier; or

The processing unit is configured to determine the first minimum time unit offset value according to the minimum time unit offset value of the activated BWP of the carrier with the largest subcarrier spacing SCS among the multiple carriers; or

The processing unit is configured to determine the first minimum time according to the minimum time unit offset value of the activated BWP of the carrier with the largest or smallest absolute time length corresponding to the minimum time unit offset value of the multiple carriers Unit offset value.
The apparatus according to claim 18 or 19, wherein the symbol position for transmitting the PDCCH is located after the first number of symbols of the time slot in which the PDCCH is located;

The processing unit is configured to determine the first minimum time unit offset value according to the second minimum time unit offset value and the first value of the activated BWP of the first carrier.
The apparatus according to claim 18 or 19, wherein the SCS of the activated BWP of the first carrier is greater than the SCS of the activated BWP of the second carrier;

The processing unit is configured to determine the first minimum time unit offset value according to a first time unit n1, a second time unit n2, and a second value, and the first time unit n1 is a value on the second carrier The first time unit that overlaps with the sum of the time unit where the DCI is located and the second minimum time unit offset value of the activated BWP of the first carrier, and the second time unit n2 is on the second carrier The first time unit that overlaps with the time unit where the DCI is located.
A computer-readable storage medium, wherein the computer-readable storage medium stores instructions, which when executed, cause a communication device to execute the method according to any one of claims 1-11.
A cross-carrier scheduling device, characterized in that the device includes a processor and a storage medium, the storage medium stores instructions, and when the instructions are executed by the processor, the device executes according to claims 1 to 1. 11. The method of any one.