WO2023284638A1

WO2023284638A1 - Downlink control information transmission method and apparatus, downlink control information acquisition method and apparatus, terminal, and network side device

Info

Publication number: WO2023284638A1
Application number: PCT/CN2022/104565
Authority: WO
Inventors: 李东儒; 王理惠; 吴凯
Original assignee: 维沃移动通信有限公司
Priority date: 2021-07-13
Filing date: 2022-07-08
Publication date: 2023-01-19
Also published as: CN115622667A

Abstract

The present application relates to the technical field of communications, and discloses a downlink control information (DCI) transmission method and apparatus, a DCI acquisition method and apparatus, a terminal, and a network side device. The DCI transmission method of the embodiments of the present application comprises: a network side device configures a first initial BWP for a terminal; the network side device performs DCI length alignment operation on target DCI that is transmitted on a common search space group; and the network side device transmits the target DCI subjected to the DCI length alignment operation to the terminal on the common search space group. The target DCI comprises first-type DCI and/or second-type DCI; the first-type DCI is used for scheduling a time frequency resource on the first initial BWP; the second-type DCI is used for scheduling a time frequency resource on a second initial BWP; the first-type DCI comprises first downlink DCI and/or first uplink DCI; the second-type DCI comprises second downlink DCI and/or second uplink DCI; the first initial BWP comprises a first initial downlink BWP and/or a first initial uplink BWP; and the second initial BWP comprises a second initial downlink BWP and/or a second initial uplink BWP.

Description

Downlink control information transmission and acquisition method, device, terminal and network side equipment

Cross References to Related Applications

This application claims priority to Chinese Patent Application No. 202110792032.X filed in China on July 13, 2021, the entire contents of which are hereby incorporated by reference.

technical field

The present application belongs to the communication field, and in particular relates to a method, device, terminal and network side equipment for sending and acquiring downlink control information.

Background technique

The size (size) of the downlink control information (Downlink Control Information, DCI) (which can be called DCI 1-0) in the format of 1-0 carried on the common search space (Common Search Space, CSS) is determined by the initial downlink bandwidth part ( initial DL BWP) or control resource set 0 (CORESET0), and DCI 0-0 needs to be aligned with the size of DCI 1-0 (which can be called DCI 0-0) (that is, the two share a DCI size). However, if the network configures multiple initial DL BWPs and/or multiple initial uplink bandwidth parts (initial UL BWP) for the user equipment (User Equipment, UE, also known as the terminal), the terminal may need to detect on these initial DL BWPs DCI with more than 4 sizes is a new challenge to the blind detection capability and complexity of the UE.

Contents of the invention

Embodiments of the present application provide a downlink control information transmission and acquisition method, device, terminal, and network-side equipment, which can solve the problem of inconsistent understanding of the DCI size between the UE and the network when at least one additional initial BWP is introduced, and at the same time increase the The problem of blind detection complexity of UE.

In the first aspect, a method for sending downlink control information is provided, including:

The network side device configures the first initial bandwidth part BWP for the terminal;

The network side device performs a DCI length alignment operation on the target downlink control information DCI sent on the common search space group;

The network side device sends the target DCI after the DCI length alignment operation to the terminal on the common search space group;

Wherein, the target DCI includes a first type of DCI and/or a second type of DCI, the first type of DCI is used to schedule time-frequency resources on the first initial BWP, and the second type of DCI is used to schedule the first Two time-frequency resources on the initial BWP, the first type of DCI includes at least one of the first downlink DCI and the first uplink DCI, and the second type of DCI includes the second downlink DCI and the second uplink DCI At least one item; the first initial BWP includes: at least one of the first initial downlink BWP and the first initial uplink BWP, and the second initial BWP includes: the second initial downlink BWP and the second initial uplink BWP at least one.

In a second aspect, an apparatus for sending downlink control information is provided, including:

a configuration module, configured to configure a first initial bandwidth part BWP for the terminal;

A processing module, configured to perform a DCI length alignment operation on the target downlink control information DCI sent on the common search space group;

a sending module, configured to send the target DCI after the DCI length alignment operation to the terminal on the common search space group;

In a third aspect, a method for obtaining downlink control information is provided, including:

The terminal detects the target downlink control information DCI on the common search space group, and the terminal is configured with a first initial bandwidth part BWP;

Wherein, the target DCI is sent by the network side device after performing a DCI length alignment operation;

The DCI length alignment operation includes an alignment operation on the first type of DCI and/or the second type of DCI; the first type of DCI is used to schedule time-frequency resources on the first initial BWP, and the second type of DCI For scheduling time-frequency resources on the second initial BWP, the first type of DCI includes at least one of the first downlink DCI and the first uplink DCI, and the second type of DCI includes the second downlink DCI and the first 2. At least one item of uplink DCI;

The first initial BWP includes: at least one of a first initial downlink BWP and a first initial uplink BWP, and the second initial BWP includes: at least one of a second initial downlink BWP and a second initial uplink BWP.

In the fourth aspect, a downlink control information acquisition device is provided, which is applied to a terminal configured with a first initial bandwidth part BWP, including:

A detection module, configured to detect target downlink control information DCI on the common search space group;

According to the fifth aspect, a network-side device is provided, the network-side device includes a processor, a memory, and a program or instruction stored in the memory and operable on the processor, the program or instruction being executed by the When executed by the processor, the steps of the method described in the first aspect are realized.

According to the sixth aspect, there is provided a network side device, including a processor and a communication interface, wherein the processor is configured to configure the first initial bandwidth part BWP for the terminal, and to control the target downlink control information DCI sent on the common search space group performing a DCI length alignment operation, and the communication interface is used to send the target DCI after the DCI length alignment operation to the terminal on the common search space group;

In a seventh aspect, a terminal is provided, the terminal includes a processor, a memory, and a program or instruction stored in the memory and operable on the processor, when the program or instruction is executed by the processor The steps of the method as described in the third aspect are realized.

In an eighth aspect, a terminal is provided, the terminal is configured with a first initial bandwidth part BWP, including a processor and a communication interface, wherein the processor is used to detect target downlink control information DCI on a common search space group;

In the ninth aspect, a readable storage medium is provided, and programs or instructions are stored on the readable storage medium, and when the programs or instructions are executed by a processor, the steps of the method described in the first aspect are realized, or the steps of the method described in the first aspect are realized, or The steps of the method described in the third aspect.

In a tenth aspect, a chip is provided, the chip includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is used to run programs or instructions, so as to implement the first aspect or the third aspect The steps of the method.

In an eleventh aspect, a computer program/program product is provided, the computer program/program product is stored in a storage medium, and the program/program product is executed by at least one processor to implement the first aspect or the third The steps of the method described in the aspect.

In the embodiment of this application, by configuring the first initial BWP for the terminal, the DCI length alignment operation is performed on the target DCI sent on the common search space group, so as to ensure that when at least one additional initial BWP is introduced , the UE and the network have the same understanding of the size of the DCI, and do not increase the complexity of the blind detection of the DCI by the UE.

Description of drawings

FIG. 1 is a block diagram of a wireless communication system to which an embodiment of the present application is applicable;

FIG. 2 is a schematic flowchart of a method for sending downlink control information according to an embodiment of the present application;

FIG. 3 is a block diagram of a device for sending downlink control information according to an embodiment of the present application;

FIG. 4 is a structural block diagram of a network side device according to an embodiment of the present application;

FIG. 5 is a schematic flowchart of a method for acquiring downlink control information according to an embodiment of the present application;

FIG. 6 is a block diagram of an apparatus for obtaining downlink control information according to an embodiment of the present application;

FIG. 7 is a structural block diagram of a terminal according to an embodiment of the present application;

Fig. 8 is a structural block diagram of a communication device according to an embodiment of the present application.

detailed description

The technical solutions in the embodiments of the present application will be clearly described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, but not all of them. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments in this application belong to the protection scope of this application.

The terms "first", "second" and the like in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific sequence or sequence. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application are capable of operation in sequences other than those illustrated or described herein and that "first" and "second" distinguish objects. It is usually one category, and the number of objects is not limited. For example, there may be one or more first objects. In addition, "and/or" in the description and claims means at least one of the connected objects, and the character "/" generally means that the related objects are an "or" relationship.

It is worth noting that the technology described in the embodiment of this application is not limited to the Long Term Evolution (Long Term Evolution, LTE)/LTE-Advanced (LTE-Advanced, LTE-A) system, and can also be used in other wireless communication systems, such as code Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access, OFDMA), Single-carrier Frequency-Division Multiple Access (Single-carrier Frequency-Division Multiple Access, SC-FDMA) and other systems. The terms "system" and "network" in the embodiments of the present application are often used interchangeably, and the described technology can be used for the above-mentioned system and radio technology, and can also be used for other systems and radio technologies. The following description describes the New Radio (New Radio, NR) system for example purposes, and uses NR terminology in most of the following descriptions, but these techniques can also be applied to applications other than NR system applications, such as the 6th Generation (6th Generation , 6G) communication system.

Fig. 1 shows a block diagram of a wireless communication system to which the embodiment of the present application is applicable. The wireless communication system includes a terminal 11 and a network side device 12 . Wherein, the terminal 11 can also be called a terminal device or a user terminal (User Equipment, UE), and the terminal 11 can be a mobile phone, a tablet computer (Tablet Personal Computer), a laptop computer (Laptop Computer) or a notebook computer, a personal digital Assistant (Personal Digital Assistant, PDA), handheld computer, netbook, ultra-mobile personal computer (UMPC), mobile Internet device (Mobile Internet Device, MID), wearable device (Wearable Device) or vehicle-mounted device (Vehicle User Equipment, VUE), pedestrian terminal (Pedestrian User Equipment, PUE) and other terminal-side equipment, wearable devices include: smart watches, bracelets, earphones, glasses, etc. It should be noted that, the embodiment of the present application does not limit the specific type of the terminal 11 . The network side device 12 may be a base station or a core network, where a base station may be called a node B, an evolved node B, an access point, a base transceiver station (Base Transceiver Station, BTS), a radio base station, a radio transceiver, a basic service Basic Service Set (BSS), Extended Service Set (ESS), Node B, Evolved Node B (eNB), Home Node B, Home Evolved Node B, Wireless Local Area Network (WLAN) ) access point, WiFi node, Transmitting Receiving Point (Transmitting Receiving Point, TRP) or some other suitable term in the field, as long as the same technical effect is achieved, the base station is not limited to specific technical terms, it should be noted that , in the embodiment of the present application, only the base station in the NR system is taken as an example, but the specific type of the base station is not limited.

The method, device, terminal and network-side equipment for sending and acquiring downlink control information provided by the embodiments of the present application are described in detail below in conjunction with the accompanying drawings through some embodiments and application scenarios.

As shown in Figure 2, the embodiment of the present application provides a method for sending downlink control information, including:

Step 201, the network side device configures a first initial bandwidth part (Bandwidth Part, BWP) for the terminal;

It should be noted that the first initial BWP includes: at least one of the first initial downlink BWP and the first initial uplink BWP.

It should be pointed out here that the first initial BWP refers to the initial BWP additionally configured for the terminal, which may be called an additional initial BWP, which is different from the initial BWP in the related art. For example, the additional initial BWP may be an independent Initial BWP (separate initial BWP). Correspondingly, the network side device can only configure a separate initial downlink BWP (separate initial DL BWP) for the terminal, or only configure a separate initial uplink BWP (separate initial UL BWP) for the terminal. The terminal configures separate initial DL BWP and separate initial UL BWP at the same time.

Optionally, there may be at least one first initial BWP. For example, the network side device configures the terminal with two first initial bandwidth parts. For another example, the network side device may configure only one first initial bandwidth part for the terminal.

In this embodiment of the present application, the terminal may be a specific terminal or a non-specific terminal; the specific terminal may refer to a terminal with a specific capability or a specific type of terminal. In some embodiments, the terminal refers to a reduced capability (Reduced Capability, RedCap) terminal, such as a watch, a bracelet and other devices; in another embodiment, the terminal may be a non-RedCap capable Terminals, such as mobile phones and other devices.

For a better understanding, please refer to the difference between a degraded terminal and a non-degraded terminal as listed in Table 1 below.

Table 1. Terminal capability comparison table between non-RedCap terminal and RedCap terminal

It can be seen from Table 1 that there is a big difference between the reduced-capability terminal and the non-reduced-capability terminal in terminal capabilities such as the number of receiving antennas and the maximum bandwidth capability. Terminals with different capabilities can use different initial bandwidth parts, which can avoid the congestion problem caused by all terminals using the same initial BWP.

Step 202, the network side device performs a DCI length alignment operation on the target downlink control information DCI sent on the common search space group;

Step 203, the network side device sends the target DCI after the DCI length alignment operation to the terminal on the common search space group;

It should be noted that the target DCI sent by the network side device includes the first type of DCI and/or the second type of DCI.

It should be noted here that the first type of DCI is used to schedule time-frequency resources on the first initial BWP; the first type of DCI includes at least one of the first downlink DCI and the first uplink DCI, Specifically, the first downlink DCI is used to schedule the physical downlink shared channel (PDSCH) on the first initial downlink BWP. Optionally, the first downlink DCI refers to a DCI with format 1-0, and the first downlink DCI An uplink DCI is used to schedule a physical uplink shared channel (Physical Uplink Shared Channel, PUSCH) on the first initial uplink BWP. Optionally, the first uplink DCI refers to a DCI with format 0-0.

It should be noted that the second initial BWP includes: at least one of the second initial downlink BWP and the second initial uplink BWP, the second initial BWP refers to the initial BWP in the related art, which includes the The initial downlink BWP and the initial uplink BWP in related technologies. Further, the second type of DCI is used to schedule time-frequency resources on the second initial BWP, and the second type of DCI includes at least one of the second downlink DCI and the second uplink DCI; specifically, the second downlink DCI Used to schedule the PDSCH on the second initial downlink BWP, optionally, the second downlink DCI refers to a DCI with format 1-0, and the second uplink DCI is used to schedule the PUSCH on the second initial uplink BWP, optional Specifically, the second uplink DCI refers to DCI with format 0-0.

In one embodiment, the terminal is a terminal with reduced capability, the first initial bandwidth part is the initial bandwidth part configured by the network side device for the terminal with reduced capability, and the second initial bandwidth part is the initial bandwidth part configured by the network side device The initial bandwidth part for a non-reduced capability terminal (that is, a normal terminal or a traditional terminal); for another example, the first initial bandwidth part may be the initial bandwidth part configured by the network side device for a non-reduced capability terminal, and the second initial bandwidth part The bandwidth part is the initial bandwidth part configured by the network side device to the terminal with reduced capability.

In this embodiment of the application, when the network side device configures the first initial BWP for the terminal, the network side device performs DCI length alignment on the target DCI sent on the public search space group, so as to ensure that at least one additional In the case of the initial BWP, the UE and the network have the same understanding of the size of the DCI without increasing the complexity of the blind detection of the DCI by the UE.

Specifically, the original length of the first downlink DCI before the DCI length alignment operation is determined by the following one:

A11, any one of the first parameters;

What needs to be explained here is that the first parameter includes the following items:

A21. The bandwidth size of the first control resource set (CORESET) associated with the first initial downlink BWP;

It should be noted that, usually, the initial downlink BWP is associated with the CORESET whose number or index is 0 (that is, CORESET#0), that is, the original length of the first downlink DCI before the DCI length alignment operation can be determined by It is determined by the bandwidth of CORESET#0 associated with the first initial downlink BWP, specifically, the bandwidth may refer to the number of resource blocks (Resource Block, RB). The association of the first initial downlink BWP with the first CORESET means that the first CORESET is configured on the first initial downlink BWP.

A22. The bandwidth size of the second CORESET associated with the second initial downlink BWP;

It should be noted that, usually, the initial downlink BWP is associated with the CORESET whose number or index is 0 (that is, CORESET#0), that is, the original length of the first downlink DCI before the DCI length alignment operation can be determined by It is determined by the bandwidth of CORESET#0 associated with the second initial downlink BWP, specifically, the bandwidth may refer to the number of RBs. The association of the second initial downlink BWP with the second CORESET means that the second CORESET is configured on the second initial downlink BWP.

A23. The bandwidth size of the first initial downlink BWP;

That is to say, in this case, the original length of the first downlink DCI before the DCI length alignment operation is determined by the bandwidth size of the first initial downlink BWP, specifically, the bandwidth size may refer to the number of RBs .

A24. The bandwidth size of the second initial downlink BWP;

That is to say, in this case, the original length of the first downlink DCI before the DCI length alignment operation is determined by the bandwidth size of the second initial downlink BWP, specifically, the bandwidth size may refer to the number of RBs.

That is to say, at this time, the original length of the first downlink DCI before the DCI length alignment operation is determined by any one of A21-A24, which one of A21-A24 to use can be configured by the network side device, or can be is stipulated by the agreement.

A12. The one with the largest value among at least two of the first parameters;

Specifically, if the network side device can obtain at least two items of A21-A24, the network side device may select the item with the largest value among the at least two items (here, the largest value refers to the largest bandwidth) to determine the first The original length of the line DCI before the DCI length alignment operation; for example, when the network side device can obtain A21, A22 and A24, the network side device judges which one of A21, A22 and A24 indicates the largest bandwidth, if A22 If the indicated bandwidth is the largest, it is determined that the original length of the first downlink DCI before the DCI length alignment operation is determined by the bandwidth size of the second CORESET associated with the second initial downlink BWP.

A13. The one with the smallest value among at least two of the first parameters;

Specifically, if the network-side device can obtain at least two items of A21-A24, the network-side device may select the item with the smallest value among the at least two items (the smallest value here refers to the smallest bandwidth) to determine the first The original length of the line DCI before the DCI length alignment operation; for example, when the network side device can obtain A21, A22 and A23, the network side device judges which one of A21, A22 and A23 indicates the smallest bandwidth, if A23 If the indicated bandwidth is the smallest, it is determined that the original length of the first downlink DCI before the DCI length alignment operation is determined by the bandwidth size of the first initial downlink BWP associated with the second initial downlink BWP.

Specifically, the original length of the first uplink DCI before the DCI length alignment operation is determined by the following one:

B11, any one of the second parameters;

What needs to be explained here is that the second parameter includes the following items:

B21. The bandwidth size of the second initial uplink BWP;

That is to say, in this case, the original length of the first uplink DCI before the DCI length alignment operation is determined by the bandwidth size of the second initial uplink BWP, specifically, the bandwidth size may refer to the number of RBs.

B22. The bandwidth size of the first initial uplink BWP;

That is to say, in this case, the original length of the first uplink DCI before the DCI length alignment operation is determined by the bandwidth size of the first initial uplink BWP, specifically, the bandwidth size may refer to the number of RBs.

That is to say, at this time, the original length of the first uplink DCI before the DCI length alignment operation is determined by any one of B21 and B22. Specifically, whether to use B21 or B22 may be determined by the network side device or by the protocol Agreed.

B12, the item with the largest value in the second parameter;

Specifically, if the network-side device can obtain B21 and B22, the network-side device can select the item with the largest value among B21 and B22 (the largest value here refers to the largest bandwidth) to determine the first uplink DCI in the DCI The original length before the length alignment operation; for example, when the network side device determines that the bandwidth indicated by B22 is the largest, it determines that the original length of the first uplink DCI before the DCI length alignment operation is determined by the bandwidth size of the first initial uplink BWP.

B13, the item with the smallest value in the second parameter;

Specifically, if the network-side device can obtain B21 and B22, the network-side device can select the item with the smallest value among B21 and B22 (the smallest value here refers to the smallest bandwidth) to determine the first uplink DCI in the DCI The original length before the length alignment operation; for example, when the network side device judges that the bandwidth indicated by B21 is the smallest, it determines that the original length of the first uplink DCI before the DCI length alignment operation is determined by the bandwidth size of the second initial uplink BWP.

The specific implementation of the embodiment of the present application will be described in detail below from the perspective that the first initial BWP includes different contents.

1. The network side device only configures the first initial downlink BWP for the terminal

That is to say, in this case, the first initial BWP only includes the first initial downlink BWP. Optionally, in this case, step 202 may be implemented in the following manner:

The network side device performs a DCI length alignment operation on the target DCI sent on the common search space group according to the first DCI alignment method;

Specifically, the first DCI alignment includes at least one of the following:

C11. The length of the first downlink DCI is aligned to the length of the second downlink DCI;

In this manner, the length of the first downlink DCI is adjusted according to the length of the second downlink DCI, that is, the length of the first downlink DCI is adjusted to be the same as the length of the second downlink DCI;

The implementation of the alignment operation mentioned in the embodiment of this application can be as follows:

S1. If the length of the first downlink DCI is greater than the length of the second downlink DCI, it is necessary to truncate the first downlink DCI, such as truncating some bits in the first downlink DCI, until the length of the first downlink DCI is equal to the length of the second downlink DCI. The lengths of the two downlink DCIs are equal. For example, the most significant bit (Most Significant Bit, MBS) bit in the frequency domain resource allocation (Frequency Domain Resource Allocation, FDRA) field in the first downlink DCI is truncated, that is, the MBS bit in the FDRA field is deleted.

S2. If the length of the first downlink DCI is less than the length of the second downlink DCI, the first downlink DCI needs to be filled by filling with 0; further, an optional filling method is: All fields of the downlink DCI are filled with 0 at the end until the length of the first downlink DCI is equal to the length of the second downlink DCI; another optional filling method is: comparing the first downlink DCI and Each information field in the second downlink DCI is filled with 0 for the information field. For example, if the length of the information field A in the first downlink DCI is smaller than the length of the corresponding information field A in the second downlink DCI, the second The information field A in the downlink DCI is filled with 0 (usually at the end of the information field A), to ensure that the length of the information field A in the first downlink DCI after filling is equal to the corresponding length of the second downlink DCI. The length of information field A.

It should be noted that the principles of the implementation of the alignment operation mentioned here are applicable to the alignment operations used in the following, and will not be described one by one in the following description.

Optionally, the network side device may align the length of the first downlink DCI to the length of the second downlink DCI when the terminal is capable of switching between the first initial downlink BWP and the second initial downlink BWP; That is to say, the premise of aligning the length of the first downlink DCI to the length of the second downlink DCI is that the terminal can switch between the first initial downlink BWP and the second initial downlink BWP, that is, apply the first initial downlink BWP The terminal will still switch back to the second initial downlink BWP.

C12. The length of the second uplink DCI is aligned to the length of the first downlink DCI;

In this manner, the length of the second uplink DCI is adjusted according to the length of the first downlink DCI, that is, the length of the second uplink DCI is adjusted to be the same as the length of the first downlink DCI.

Optionally, the network side device may change the length of the second uplink DCI to the length of the first downlink DCI when the terminal cannot switch between the first initial downlink BWP and the second initial downlink BWP Alignment, that is to say, the premise of aligning the length of the second uplink DCI to the length of the first downlink DCI is that the terminal cannot switch between the first initial downlink BWP and the second initial downlink BWP, that is, apply the first A terminal with an initial downlink BWP will not switch back to a second initial downlink BWP.

2. The network side device only configures the first initial uplink BWP for the terminal

That is to say, in this case, the first initial BWP only includes the first initial uplink BWP. Optionally, in this case, step 202 may be implemented in the following manner:

The network side device performs a DCI length alignment operation on the target DCI sent on the common search space group according to the second DCI alignment method;

Wherein, the second DCI alignment includes at least one of the following:

C21. The length of the first uplink DCI is aligned to the length of the second downlink DCI;

In this manner, the length of the first uplink DCI is adjusted according to the length of the second downlink DCI, that is, the length of the first uplink DCI is adjusted to be the same as the length of the second downlink DCI;

C22. The length of the first uplink DCI is aligned to the length of the second uplink DCI;

In this manner, the length of the first uplink DCI is adjusted according to the length of the second uplink DCI, that is, the length of the first uplink DCI is adjusted to be the same as the length of the second uplink DCI;

Optionally, the network side device may align the length of the first uplink DCI to the length of the second uplink DCI when the terminal is capable of switching between the first initial uplink BWP and the second initial uplink BWP That is to say, the premise of aligning the length of the first uplink DCI to the length of the second uplink DCI is that the terminal can switch between the first initial uplink BWP and the second initial uplink BWP, that is, apply the first initial The terminal of the uplink BWP will still switch back to the second initial uplink BWP.

3. The network side device configures the first initial downlink BWP and the first initial uplink BWP for the terminal

That is to say, in this case, the first initial BWP includes the first initial downlink BWP and the first initial uplink BWP. Optionally, in this case, step 202 can be implemented in the following manner:

The network side device performs a DCI length alignment operation on the target DCI sent on the common search space group according to the third DCI alignment method;

Wherein, the third DCI alignment includes at least one of the following:

C31. The length of the first uplink DCI is aligned to the length of the first downlink DCI;

In this manner, the length of the first uplink DCI is adjusted according to the length of the first downlink DCI, that is, the length of the first uplink DCI is adjusted to be the same as the length of the first downlink DCI;

Optionally, the network side device may change the length of the first uplink DCI to the length of the first downlink DCI when the terminal cannot switch between the first initial downlink BWP and the second initial downlink BWP Alignment; that is to say, the premise of aligning the length of the first uplink DCI to the length of the first downlink DCI is that the terminal cannot switch between the first initial downlink BWP and the second initial downlink BWP, that is, apply the first A terminal with an initial downlink BWP will not switch back to a second initial downlink BWP.

Optionally, the network side device may switch between the first initial downlink BWP and the second initial downlink BWP and switch between the first initial uplink BWP and the second initial uplink BWP when the terminal cannot In this case, align the length of the first uplink DCI to the length of the first downlink DCI; that is, the premise of aligning the length of the first uplink DCI to the length of the first downlink DCI is that the terminal cannot perform the first initialization Switching between the BWP (including the first initial uplink BWP and the first initial downlink BWP) and the second initial BWP (including the second initial uplink BWP and the second initial downlink BWP), that is, the terminal applying the first initial BWP does not Will switch back to the second initial BWP.

C32. The length of the first uplink DCI is aligned to the length of the second downlink DCI;

Optionally, the network side device may align the length of the first uplink DCI to the length of the second downlink DCI when the terminal is capable of switching between the first initial downlink BWP and the second initial downlink BWP; That is to say, the premise of aligning the length of the first uplink DCI to the length of the second downlink DCI is that the terminal can switch between the first initial downlink BWP and the second initial downlink BWP, that is, the first initial downlink BWP is applied. The terminal will still switch back to the second initial downlink BWP.

C33. The length of the first uplink DCI is aligned to the length of the second uplink DCI;

Optionally, the network side device may align the length of the first uplink DCI to the length of the second uplink DCI when the terminal is capable of switching between the first initial uplink BWP and the second initial uplink BWP; That is to say, the premise of aligning the length of the first uplink DCI to the length of the second uplink DCI is that the terminal can switch between the first initial uplink BWP and the second initial uplink BWP, that is, the application of the first initial uplink BWP will still Switch back to the second initial uplink BWP.

C34. The length of the first downlink DCI is aligned to the length of the second downlink DCI;

Optionally, the network side device may change the length of the first downlink DCI to the length of the second downlink DCI when the terminal is capable of switching between the first initial downlink BWP and the second initial downlink BWP Alignment; that is to say, the premise of aligning the length of the first downlink DCI to the length of the second downlink DCI is that the terminal can switch between the first initial downlink BWP and the second initial downlink BWP, that is, apply the first initial The terminal of the downlink BWP will still switch back to the second initial downlink BWP.

C35. The first downlink DCI maintains the original length;

In this manner, that is to say, the network side device does not perform a DCI length alignment operation on the length of the first downlink DCI.

Optionally, the network side device may keep the original length of the first downlink DCI when the terminal cannot switch between the first initial downlink BWP and the second initial downlink BWP; that is, the first downlink The premise of maintaining the original length of the row DCI is that the terminal cannot switch between the first initial downlink BWP and the second initial downlink BWP, that is, the terminal using the first initial downlink BWP will not switch back to the second initial downlink BWP.

It should be noted that, in this case, the network side device performs the alignment operation of the first uplink DCI and the first downlink DCI respectively, that is, for the first uplink DCI, the network side device will select the C31- One of C33 is performed, and for the first downlink DCI, the network side device selects one of C34 and -C35 to perform.

It should be noted here that the terminal applying the first initial downlink BWP and/or the first initial uplink BWP mentioned in this application may be a RedCap terminal.

Taking the first initial downlink BWP as separate initial DL BWP and the first initial uplink BWP as separate initial UL BWP as examples, the above several situations are illustrated as follows.

Actual application situation 1. The network side device is configured with separate initial DL BWP and separate initial UL BWP

The network side device is configured with CORESET 0 on the separate initial DL BWP, and the CSS is associated with CORESET0, and the CSS type (type) includes at least one of type 0, type 0A, type 1 and type2.

The terminal detects the first downlink DCI and the first uplink DCI in the search space configured on the separate initial DL BWP; wherein, the first downlink DCI schedules the PDSCH on the separate initial DL BWP; the first uplink DCI schedules the separate initial UL BWP The push.

Optionally, in the case where a terminal applying separate initial DL BWP (for example, RedCap UE) will not switch back to the initial DL BWP in the related art, the following alignment scheme is adopted:

S11. The first downlink DCI maintains the original length and is not aligned with any DCI;

S12. Align the length of the first uplink DCI to the length of the first downlink DCI.

Optionally, in the case where a terminal applying separate initial DL BWP (for example, RedCap UE) will still switch back to the initial DL BWP in the related art, the following alignment scheme is adopted:

S21. Align the length of the first downlink DCI to the length of the second downlink DCI;

S22. Align the length of the first uplink DCI to the length of the second uplink DCI, and then continue to align the length of the second uplink DCI to the length of the second downlink DCI according to the relevant technical agreement; or

The length of the first uplink DCI is aligned to the length of the first downlink DCI (using this branch means that the first uplink DCI is first aligned with the first downlink DCI, and then aligned with the second downlink DCI) or, the first uplink DCI The length of the second downlink DCI is aligned to the length of the second downlink DCI (using this branch means that the first uplink DCI is directly aligned with the second downlink DCI);

Actual application situation 2. The network side device is only configured with separate initial DL BWP

The network side device is configured with CORESET 0 on the separate initial DL BWP, and the CSS is associated with CORESET0, and the CSS type includes at least one of type 0, type 0A, type 1 and type2.

The terminal detects the first downlink DCI and the second uplink DCI in the search space configured on the separate initial DL BWP. Wherein, the first downlink DCI schedules the PDSCH on the separate initial DL BWP; the second uplink DCI schedules the PUSCH on the initial UL BWP in related technologies.

S31. Align the length of the first downlink DCI to the length of the second downlink DCI;

S32. Align the length of the second uplink DCI to the length of the first downlink DCI.

The length of the first downlink DCI is aligned to the length of the second downlink DCI.

Actual application situation 3. The network side device is only configured with separate initial UL BWP

In this case, the terminal detects the second downlink DCI, the second uplink DCI, and the first uplink DCI in the search space configured on the initial DL BWP in the related art; wherein, the first uplink DCI schedules the separate initial UL BWP on the PUSCH.

Any of the following alignment schemes can be used:

S41. Align the length of the first uplink DCI to the length of the second downlink DCI;

S42. Align the length of the first uplink DCI to the length of the second uplink DCI;

Further, in this case, according to the protocol in the related art, the length of the second uplink DCI continues to be aligned with the length of the second downlink DCI.

It should be noted that, by introducing at least one additional initial BWP in the embodiment of the present application, a method for aligning the size of the fallback DCI carried in the CSS (that is, DCI 0-0 and 1-0) can be avoided. Increase the complexity of the blind detection of the terminal and ensure that the terminal and the network have the same understanding of the DCI size.

As shown in FIG. 3, the embodiment of the present application also provides an apparatus 300 for sending downlink control information, including:

A configuration module 301, configured to configure a first initial bandwidth part BWP for a terminal;

A processing module 302, configured to perform a DCI length alignment operation on the target downlink control information DCI sent on the common search space group;

A sending module 303, configured to send the target DCI after the DCI length alignment operation to the terminal on the common search space group;

Optionally, the original length of the first downlink DCI before the DCI length alignment operation is determined by the following one:

any of the first parameters;

the largest numerical value of at least two of the first parameters;

the smallest numerical value of at least two of the first parameters;

The first parameters include:

The bandwidth size of the first control resource set CORESET associated with the first initial downlink BWP;

The bandwidth size of the second control resource set CORESET associated with the second initial downlink BWP;

The bandwidth size of the first initial downlink BWP;

The bandwidth size of the second initial downlink BWP.

Optionally, the original length of the first uplink DCI before the DCI length alignment operation is determined by the following one:

any of the second parameters;

The item with the largest value in the second parameter;

The item with the smallest value in the second parameter;

The second parameter includes:

The bandwidth size of the second initial uplink BWP;

The bandwidth size of the first initial uplink BWP.

Optionally, the processing module 302 is configured to:

In the case where the first initial BWP includes the first initial downlink BWP, the network side device performs a DCI length alignment operation on the target DCI sent on the common search space group according to the first DCI alignment method;

Wherein, the first DCI alignment includes at least one of the following:

The length of the first downlink DCI is aligned to the length of the second downlink DCI;

The length of the second uplink DCI is aligned to the length of the first downlink DCI.

Optionally, the implementation of aligning the length of the second uplink DCI to the length of the first downlink DCI includes:

If the terminal cannot switch between the first initial downlink BWP and the second initial downlink BWP, the length of the second uplink DCI is aligned to the length of the first downlink DCI.

Optionally, the implementation of aligning the length of the first downlink DCI to the length of the second downlink DCI includes:

In a case where the terminal is capable of switching between the first initial downlink BWP and the second initial downlink BWP, the length of the first downlink DCI is aligned to the length of the second downlink DCI.

Optionally, the processing module 302 is configured to:

In the case where the first initial BWP includes the first initial uplink BWP, the network side device performs a DCI length alignment operation on the target DCI sent on the common search space group according to the second DCI alignment method;

Wherein, the second DCI alignment includes at least one of the following:

The length of the first uplink DCI is aligned to the length of the second downlink DCI;

The length of the first uplink DCI is aligned to the length of the second uplink DCI.

Optionally, the implementation of aligning the length of the first uplink DCI to the length of the second uplink DCI includes:

In a case where the terminal is capable of switching between the first initial uplink BWP and the second initial uplink BWP, the length of the first uplink DCI is aligned to the length of the second uplink DCI.

Optionally, the processing module 302 is configured to:

In the case where the first initial BWP includes the first initial downlink BWP and the first initial uplink BWP, the network side device performs DCI length alignment on the target DCI sent on the common search space group according to the third DCI alignment method operate;

Wherein, the third DCI alignment includes at least one of the following:

The length of the first uplink DCI is aligned to the length of the first downlink DCI;

The length of the first uplink DCI is aligned to the length of the second uplink DCI;

The first downlink DCI maintains the original length.

Optionally, the implementation of aligning the length of the first uplink DCI to the length of the first downlink DCI includes:

If the terminal cannot switch between the first initial downlink BWP and the second initial downlink BWP, or when the terminal cannot switch between the first initial downlink BWP and the second initial downlink BWP In the case of switching between the first initial uplink BWP and the second initial uplink BWP, the length of the first uplink DCI is aligned to the length of the first downlink DCI.

Optionally, the implementation of aligning the length of the first uplink DCI to the length of the second downlink DCI includes:

In a case where the terminal is capable of switching between the first initial downlink BWP and the second initial downlink BWP, the length of the first uplink DCI is aligned to the length of the second downlink DCI.

Optionally, the implementation of maintaining the original length of the first downlink DCI includes:

When the terminal cannot switch between the first initial downlink BWP and the second initial downlink BWP, the first downlink DCI maintains the original length.

It should be noted that, in the case of configuring the first initial BWP for the terminal, the network-side device in the embodiment of the present application first performs the DCI length alignment operation on the target DCI sent on the public search space group, and then performs the DCI length alignment operation The final target DCI is used to ensure that when at least one additional initial BWP is introduced, the UE and the network have the same understanding of the DCI size and reduce the complexity of blind detection of the UE.

Optionally, the embodiment of the present application also provides a network side device, including a processor, a memory, and a program or instruction stored in the memory and operable on the processor, and the program or instruction is executed by the processor to implement It is applied to each process of the embodiment of the method for sending downlink control information on the network side device side, and can achieve the same technical effect. To avoid repetition, details are not repeated here.

The embodiment of the present application also provides a readable storage medium. The computer-readable storage medium stores programs or instructions. When the program or instructions are executed by the processor, the embodiment of the method for sending downlink control information applied to the network side device side is implemented. Each process can achieve the same technical effect, so in order to avoid repetition, it will not be repeated here.

Wherein, the computer-readable storage medium is, for example, a read-only memory (Read-Only Memory, ROM), a random access memory (Random Access Memory, RAM), a magnetic disk or an optical disk, and the like.

The embodiment of the present application also provides a network side device, including a processor and a communication interface, the processor is used to configure the first initial bandwidth part BWP for the terminal; perform DCI length alignment on the target downlink control information DCI sent on the common search space group Operation: the communication interface is used to send the target DCI after the DCI length alignment operation to the terminal on the common search space group;

The network-side device embodiment corresponds to the above-mentioned network-side device method embodiment, and each implementation process and implementation mode of the above-mentioned method embodiment can be applied to this network-side device embodiment, and can achieve the same technical effect.

Specifically, the embodiment of the present application also provides a network side device. As shown in FIG. 4 , the network side device 400 includes: an antenna 401 , a radio frequency device 402 , and a baseband device 403 . The antenna 401 is connected to the radio frequency device 402 . In the uplink direction, the radio frequency device 402 receives information through the antenna 41, and sends the received information to the baseband device 403 for processing. In the downlink direction, the baseband device 403 processes the information to be sent and sends it to the radio frequency device 402, and the radio frequency device 402 processes the received information and sends it out through the antenna 401.

The foregoing frequency band processing device may be located in the baseband device 403 , and the method performed by the network side device in the above embodiments may be implemented in the baseband device 403 , and the baseband device 403 includes a processor 404 and a memory 405 .

The baseband device 403 may include at least one baseband board, for example, a plurality of chips are arranged on the baseband board, as shown in FIG. The operation of the network side device shown in the above method embodiments.

The baseband device 403 may also include a network interface 406 for exchanging information with the radio frequency device 402, such as a common public radio interface (common public radio interface, CPRI).

Specifically, the network side device in the embodiment of the present invention also includes: instructions or programs stored in the memory 405 and executable on the processor 404, and the processor 404 calls the instructions or programs in the memory 405 to execute the modules shown in FIG. 3 To avoid duplication, the method of implementation and to achieve the same technical effect will not be repeated here.

Corresponding to the transmission of the network side device, as shown in Figure 5, the embodiment of the present application provides a method for obtaining downlink control information, which is applied to a terminal configured with the first initial bandwidth part BWP, including:

Step 501, the terminal detects the target downlink control information DCI on the common search space group;

The target DCI before the DCI length alignment operation includes a first type of DCI and/or a second type of DCI; the first type of DCI is used to schedule time-frequency resources on the first initial BWP, and the second type of DCI For scheduling time-frequency resources on the second initial BWP, the first type of DCI includes at least one of the first downlink DCI and the first uplink DCI, and the second type of DCI includes the second downlink DCI and the first 2. At least one item of uplink DCI;

any of the first parameters;

the largest numerical value of at least two of the first parameters;

the smallest numerical value of at least two of the first parameters;

The first parameters include:

The bandwidth size of the first initial downlink BWP;

The bandwidth size of the second initial downlink BWP.

any of the second parameters;

The item with the largest value in the second parameter;

The item with the smallest value in the second parameter;

The second parameter includes:

The bandwidth size of the second initial uplink BWP;

The bandwidth size of the first initial uplink BWP.

Optionally, the method also includes:

In the case where the first initial BWP includes the first initial downlink BWP, the terminal parses the target DCI on the common search space group according to the first DCI alignment;

Wherein, the first DCI alignment includes at least one of the following:

When the terminal is capable of switching between the first initial downlink BWP and the second initial downlink BWP, the length of the first downlink DCI is aligned to the length of the second downlink DCI.

Optionally, the method also includes:

In the case where the first initial BWP includes the first initial uplink BWP, the terminal parses the target DCI on the common search space group according to the second DCI alignment;

Wherein, the second DCI alignment includes at least one of the following:

Optionally, the method also includes:

In the case where the first initial BWP includes the first initial downlink BWP and the first initial uplink BWP, the terminal parses the target DCI on the common search space group according to the third DCI alignment;

Wherein, the third DCI alignment includes at least one of the following:

The first downlink DCI maintains the original length.

It should be noted that, how the network-side device sends DCI, the terminal uses the same method to analyze the DCI, that is to say, all the implementation methods in the above-mentioned embodiments are applicable to this embodiment, and the same technology can also be achieved. Effect.

It should be noted that, the method for obtaining downlink control information provided in the embodiment of the present application may be executed by a device for obtaining downlink control information, or a control module in the device for obtaining downlink control information for executing the method for obtaining downlink control information. In the embodiment of the present application, the method for obtaining downlink control information performed by the device for obtaining downlink control information is taken as an example to describe the device for obtaining downlink control information provided in the embodiment of the present application.

As shown in Figure 6, the embodiment of the present application provides a downlink control information acquisition device 600, which is applied to a terminal configured with a first initial bandwidth part BWP, including:

A detection module 601, configured to detect target downlink control information DCI on a common search space group;

any of the first parameters;

the largest numerical value of at least two of the first parameters;

the smallest numerical value of at least two of the first parameters;

The first parameters include:

The bandwidth size of the first initial downlink BWP;

The bandwidth size of the second initial downlink BWP.

any of the second parameters;

The item with the largest value in the second parameter;

The item with the smallest value in the second parameter;

The second parameter includes:

The bandwidth size of the second initial uplink BWP;

The bandwidth size of the first initial uplink BWP.

Optionally, the device also includes:

A first parsing module, configured to, when the first initial BWP includes the first initial downlink BWP, the terminal parse the target DCI on the common search space group according to the first DCI alignment;

Wherein, the first DCI alignment includes at least one of the following:

Optionally, the device also includes:

A second parsing module, configured to, when the first initial BWP includes the first initial uplink BWP, the terminal parse the target DCI on the common search space group according to the second DCI alignment;

Wherein, the second DCI alignment includes at least one of the following:

Optionally, the device also includes:

A third parsing module, configured to, when the first initial BWP includes the first initial downlink BWP and the first initial uplink BWP, the terminal parse the target DCI on the common search space group according to the third DCI alignment;

Wherein, the third DCI alignment includes at least one of the following:

The first downlink DCI maintains the original length.

The apparatus for obtaining downlink control information in the embodiment of the present application may be a device, a device with an operating system or an electronic device, or may be a component, an integrated circuit, or a chip in a terminal. The apparatus or electronic equipment may be a mobile terminal or a non-mobile terminal. Exemplarily, the mobile terminal may include but not limited to the types of terminals 11 listed above, and the non-mobile terminal may be a server, a network attached storage (Network Attached Storage, NAS), a personal computer (personal computer, PC), a television ( television, TV), teller machines or self-service machines, etc., are not specifically limited in this embodiment of the present application.

The downlink control information acquisition device provided by the embodiment of the present application can realize each process realized by the method embodiment in FIG. 5 and achieve the same technical effect. To avoid repetition, details are not repeated here.

The embodiment of the present application also provides a terminal, the terminal is configured with a first initial bandwidth part BWP, including a processor and a communication interface, and the processor is used to detect the target downlink control information DCI on the common search space group;

This terminal embodiment corresponds to the above-mentioned terminal-side method embodiment, and each implementation process and implementation mode of the above-mentioned method embodiment can be applied to this terminal embodiment, and can achieve the same technical effect. Specifically, FIG. 7 is a schematic diagram of a hardware structure of a terminal implementing an embodiment of the present application.

The terminal 700 terminal is configured with the first initial BWP, including but not limited to: radio frequency unit 701, network module 702, audio output unit 703, input unit 704, sensor 705, display unit 706, user input unit 707, interface unit 708, memory 709, and at least some components in the processor 710 and the like.

Those skilled in the art can understand that the terminal 700 may also include a power supply (such as a battery) for supplying power to various components, and the power supply may be logically connected to the processor 710 through the power management system, so as to manage charging, discharging, and power consumption through the power management system. Management and other functions. The terminal structure shown in FIG. 7 does not constitute a limitation on the terminal, and the terminal may include more or fewer components than shown in the figure, or combine some components, or arrange different components, which will not be repeated here.

It should be understood that, in the embodiment of the present application, the input unit 704 may include a graphics processor (Graphics Processing Unit, GPU) 7041 and a microphone 7042, and the graphics processor 7041 is used for the image capture device ( Such as the image data of the still picture or video obtained by the camera) for processing. The display unit 706 may include a display panel 7061, and the display panel 7061 may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like. The user input unit 707 includes a touch panel 7071 and other input devices 7072 . The touch panel 7071 is also called a touch screen. The touch panel 7071 may include two parts, a touch detection device and a touch controller. Other input devices 7072 may include, but are not limited to, physical keyboards, function keys (such as volume control keys, switch keys, etc.), trackballs, mice, and joysticks, which will not be repeated here.

In the embodiment of the present application, the radio frequency unit 701 receives the downlink data from the network side device, and processes it to the processor 710; in addition, sends the uplink data to the network side device. Generally, the radio frequency unit 701 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like.

The memory 709 can be used to store software programs or instructions as well as various data. The memory 709 may mainly include a program or instruction storage area and a data storage area, wherein the program or instruction storage area may store an operating system, an application program or instructions required by at least one function (such as a sound playback function, an image playback function, etc.) and the like. In addition, the memory 709 may include a high-speed random access memory, and may also include a nonvolatile memory, wherein the nonvolatile memory may be a read-only memory (Read-Only Memory, ROM), a programmable read-only memory (Programmable ROM) , PROM), erasable programmable read-only memory (Erasable PROM, EPROM), electrically erasable programmable read-only memory (Electrically EPROM, EEPROM) or flash memory. For example at least one magnetic disk storage device, flash memory device, or other non-volatile solid-state storage device.

The processor 710 may include one or more processing units; optionally, the processor 710 may integrate an application processor and a modem processor, wherein the application processor mainly processes the operating system, user interface and application programs or instructions, etc., Modem processors mainly handle wireless communications, such as baseband processors. It can be understood that the foregoing modem processor may not be integrated into the processor 710 .

Wherein, the processor 710 is used to implement:

Detect target downlink control information DCI on the common search space group;

The first initial BWP includes: at least one of a first initial downlink BWP and a first initial uplink BWP, and the second initial BWP includes: one of a second initial downlink BWP and a second initial uplink BWP.

any of the first parameters;

the largest numerical value of at least two of the first parameters;

the smallest numerical value of at least two of the first parameters;

The first parameters include:

The bandwidth size of the first initial downlink BWP;

The bandwidth size of the second initial downlink BWP.

any of the second parameters;

The item with the largest value in the second parameter;

The item with the smallest value in the second parameter;

The second parameter includes:

The bandwidth size of the second initial uplink BWP;

The bandwidth size of the first initial uplink BWP.

Optionally, the processor 710 is also configured to implement:

Wherein, the first DCI alignment includes at least one of the following:

Optionally, the processor 710 is used to implement:

Optionally, the processor 710 is also configured to implement:

Wherein, the second DCI alignment includes at least one of the following:

Optionally, the processor 710 is used to implement:

Optionally, the processor 710 is also configured to implement:

Wherein, the third DCI alignment includes at least one of the following:

The first downlink DCI maintains the original length.

Optionally, the processor 710 is used to implement:

If the terminal cannot switch between the first initial downlink BWP and the second initial downlink BWP, the length of the first uplink DCI is aligned to the length of the first downlink DCI.

Optionally, the processor 710 is used to implement:

Optionally, an embodiment of the present application further provides a terminal, including a processor, a memory, and a program or instruction stored in the memory and operable on the processor, and the downlink control is implemented when the program or instruction is executed by the processor Each process of the embodiment of the information acquisition method can achieve the same technical effect, so in order to avoid repetition, it will not be repeated here.

The embodiment of the present application also provides a readable storage medium, on which a program or an instruction is stored, and when the program or instruction is executed by a processor, each process of the embodiment of the method for obtaining downlink control information can be realized, and can achieve the same Technical effects, in order to avoid repetition, will not be repeated here. Wherein, the computer-readable storage medium is, for example, a read-only memory (Read-Only Memory, ROM), a random access memory (Random Access Memory, RAM), a magnetic disk or an optical disk, and the like.

Optionally, as shown in FIG. 8 , this embodiment of the present application further provides a communication device 800, including a processor 801, a memory 802, and programs or instructions stored in the memory 802 and operable on the processor 801, For example, when the communication device 800 is a terminal, when the program or instruction is executed by the processor 801, each process of the above embodiment of the method for obtaining downlink control information can be implemented, and the same technical effect can be achieved. When the communication device 800 is a network-side device, when the program or instruction is executed by the processor 801, each process of the above embodiment of the method for sending downlink control information can be achieved, and the same technical effect can be achieved. To avoid repetition, details are not repeated here.

The terminal involved in this embodiment of the present application may be a device that provides voice and/or data connectivity to users, a handheld device with a wireless connection function, or other processing devices connected to a wireless modem. In different systems, the name of the terminal equipment may be different. For example, in a 5G system, the terminal equipment may be called User Equipment (User Equipment, UE). The wireless terminal device can communicate with one or more core networks (Core Network, CN) via the radio access network (Radio Access Network, RAN), and the wireless terminal device can be a mobile terminal device, such as a mobile phone (or called a "cellular "telephones) and computers with mobile terminal equipment, such as portable, pocket, hand-held, computer built-in or vehicle-mounted mobile devices, which exchange language and/or data with the radio access network. For example, Personal Communication Service (PCS) phone, cordless phone, Session Initiated Protocol (SIP) phone, Wireless Local Loop (WLL) station, Personal Digital Assistant, PDA) and other devices. Wireless terminal equipment can also be called system, subscriber unit, subscriber station, mobile station, mobile station, remote station, access point , remote terminal (remote terminal), access terminal (access terminal), user terminal (user terminal), user agent (user agent), and user device (user device), which are not limited in this embodiment of the application.

The network side equipment involved in the embodiment of the present application may be a base station (Base Transceiver Station, BTS) in Global System of Mobile communication (GSM) or Code Division Multiple Access (CDMA), or it may be A base station (NodeB, NB) in Wideband Code Division Multiple Access (WCDMA), or an evolved base station (Evolutional Node B, eNB or eNodeB) in LTE, or a relay station or access point, or The base stations and the like in the future 5G network are not limited here.

One or more antennas can be used between the network-side device and the terminal for Multi Input Multi Output (MIMO) transmission, and MIMO transmission can be Single User MIMO (Single User MIMO, SU-MIMO) or Multi-User MIMO (Multiple User MIMO, MU-MIMO). According to the shape and number of root antenna combinations, MIMO transmission can be 2D-MIMO, 3D-MIMO, FD-MIMO, or massive-MIMO, or diversity transmission, precoding transmission, or beamforming transmission, etc.

The embodiment of the present application further provides a chip, the chip includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the above method for sending downlink control information or Each process of the embodiment of the method for obtaining downlink control information can achieve the same technical effect, so in order to avoid repetition, details are not repeated here.

It should be understood that the chips mentioned in the embodiments of the present application may also be called system-on-chip, system-on-chip, system-on-a-chip, or system-on-a-chip.

It should be noted that, in this document, the term "comprising", "comprising" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article or apparatus comprising a set of elements includes not only those elements, It also includes other elements not expressly listed, or elements inherent in the process, method, article, or device. Without further limitations, an element defined by the phrase "comprising a ..." does not preclude the presence of additional identical elements in the process, method, article, or apparatus comprising that element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved. Functions are performed, for example, the described methods may be performed in an order different from that described, and various steps may also be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

Through the description of the above embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus a necessary general-purpose hardware platform, and of course also by hardware, but in many cases the former is better implementation. Based on this understanding, the essence of the technical solution of this application or the part that contributes to related technologies can be embodied in the form of software products, and the computer software products are stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk, etc.) ) includes several instructions to make a terminal (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) execute the method described in each embodiment of the present application.

The embodiments of the present application have been described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementations. The above-mentioned specific implementations are only illustrative and not restrictive. Those of ordinary skill in the art will Under the inspiration of this application, without departing from the purpose of this application and the scope of protection of the claims, many forms can also be made, all of which belong to the protection of this application.

Claims

A method for sending downlink control information, comprising:

The network side device configures the first initial bandwidth part BWP for the terminal;

The network side device performs a DCI length alignment operation on the target downlink control information DCI sent on the common search space group;

The network side device sends the target DCI after the DCI length alignment operation to the terminal on the common search space group;

Wherein, the target DCI includes a first type of DCI and/or a second type of DCI, the first type of DCI is used to schedule time-frequency resources on the first initial BWP, and the second type of DCI is used to schedule the first Two time-frequency resources on the initial BWP, the first type of DCI includes at least one of the first downlink DCI and the first uplink DCI, and the second type of DCI includes the second downlink DCI and the second uplink DCI At least one item; the first initial BWP includes: at least one of the first initial downlink BWP and the first initial uplink BWP, and the second initial BWP includes: the second initial downlink BWP and the second initial uplink BWP at least one.
The method according to claim 1, wherein the original length of the first downlink DCI before the DCI length alignment operation is determined by one of the following:

any of the first parameters;

the largest numerical value of at least two of the first parameters;

the smallest numerical value of at least two of the first parameters;

The first parameters include:

The bandwidth size of the first control resource set CORESET associated with the first initial downlink BWP;

The bandwidth size of the second control resource set CORESET associated with the second initial downlink BWP;

The bandwidth size of the first initial downlink BWP;

The bandwidth size of the second initial downlink BWP.
The method according to claim 1, wherein the original length of the first uplink DCI before the DCI length alignment operation is determined by one of the following:

any of the second parameters;

The item with the largest value in the second parameter;

The item with the smallest value in the second parameter;

The second parameter includes:

The bandwidth size of the second initial uplink BWP;

The bandwidth size of the first initial uplink BWP.
The method according to any one of claims 1-3, wherein the network side device performs a DCI length alignment operation on the target DCI sent on the common search space group, including:

In the case where the first initial BWP includes the first initial downlink BWP, the network side device performs a DCI length alignment operation on the target DCI sent on the common search space group according to the first DCI alignment method;

Wherein, the first DCI alignment includes at least one of the following:

The length of the first downlink DCI is aligned to the length of the second downlink DCI;

The length of the second uplink DCI is aligned to the length of the first downlink DCI.
The method according to claim 4, wherein the length of the second uplink DCI is aligned to the length of the first downlink DCI, comprising:

If the terminal cannot switch between the first initial downlink BWP and the second initial downlink BWP, the length of the second uplink DCI is aligned to the length of the first downlink DCI.
The method according to claim 4, wherein the length of the first downlink DCI is aligned to the length of the second downlink DCI, comprising:

In a case where the terminal is capable of switching between the first initial downlink BWP and the second initial downlink BWP, the length of the first downlink DCI is aligned to the length of the second downlink DCI.
The method according to any one of claims 1-3, wherein the network side device performs a DCI length alignment operation on the target DCI sent on the common search space group, including:

In the case where the first initial BWP includes the first initial uplink BWP, the network side device performs a DCI length alignment operation on the target DCI sent on the common search space group according to the second DCI alignment method;

Wherein, the second DCI alignment includes at least one of the following:

The length of the first uplink DCI is aligned to the length of the second downlink DCI;

The length of the first uplink DCI is aligned to the length of the second uplink DCI.
The method according to claim 7, wherein the length of the first uplink DCI is aligned to the length of the second uplink DCI, comprising:

In a case where the terminal is capable of switching between the first initial uplink BWP and the second initial uplink BWP, the length of the first uplink DCI is aligned to the length of the second uplink DCI.
The method according to any one of claims 1-3, wherein the network side device performs a DCI length alignment operation on the target DCI sent on the common search space group, including:

In the case where the first initial BWP includes the first initial downlink BWP and the first initial uplink BWP, the network side device performs DCI length alignment on the target DCI sent on the common search space group according to the third DCI alignment method operate;

Wherein, the third DCI alignment includes at least one of the following:

The length of the first downlink DCI is aligned to the length of the second downlink DCI;

The length of the first uplink DCI is aligned to the length of the first downlink DCI;

The length of the first uplink DCI is aligned to the length of the second downlink DCI;

The length of the first uplink DCI is aligned to the length of the second uplink DCI;

The first downlink DCI maintains the original length.
The method according to claim 9, wherein the length of the first uplink DCI is aligned to the length of the first downlink DCI, comprising:

If the terminal cannot switch between the first initial downlink BWP and the second initial downlink BWP, or when the terminal cannot switch between the first initial downlink BWP and the second initial downlink BWP In the case of switching between the first initial uplink BWP and the second initial uplink BWP, the length of the first uplink DCI is aligned to the length of the first downlink DCI.
The method according to claim 9, wherein the length of the first uplink DCI is aligned to the length of the second uplink DCI, comprising:

In a case where the terminal is capable of switching between the first initial uplink BWP and the second initial uplink BWP, the length of the first uplink DCI is aligned to the length of the second uplink DCI.
The method according to claim 9, wherein the length of the first uplink DCI is aligned to the length of the second downlink DCI, comprising:

In a case where the terminal is capable of switching between the first initial downlink BWP and the second initial downlink BWP, the length of the first uplink DCI is aligned to the length of the second downlink DCI.
The method according to claim 9, wherein the first downlink DCI maintains the original length, comprising:

When the terminal cannot switch between the first initial downlink BWP and the second initial downlink BWP, the first downlink DCI maintains the original length.
The method according to claim 9, wherein the length of the first downlink DCI is aligned to the length of the second downlink DCI, comprising:

In a case where the terminal is capable of switching between the first initial downlink BWP and the second initial downlink BWP, the length of the first downlink DCI is aligned to the length of the second downlink DCI.
A method for obtaining downlink control information, comprising:

The terminal detects the target downlink control information DCI on the common search space group, and the terminal is configured with a first initial bandwidth part BWP;

Wherein, the target DCI is sent by the network side device after performing a DCI length alignment operation;

The DCI length alignment operation includes an alignment operation on the first type of DCI and/or the second type of DCI; the first type of DCI is used to schedule time-frequency resources on the first initial BWP, and the second type of DCI For scheduling time-frequency resources on the second initial BWP, the first type of DCI includes at least one of the first downlink DCI and the first uplink DCI, and the second type of DCI includes the second downlink DCI and the first 2. At least one item of uplink DCI;

The first initial BWP includes: at least one of a first initial downlink BWP and a first initial uplink BWP, and the second initial BWP includes: at least one of a second initial downlink BWP and a second initial uplink BWP.
The method according to claim 15, wherein the original length of the first downlink DCI before the DCI length alignment operation is determined by one of the following:

any of the first parameters;

the largest numerical value of at least two of the first parameters;

the smallest numerical value of at least two of the first parameters;

The first parameters include:

The bandwidth size of the first control resource set CORESET associated with the first initial downlink BWP;

The bandwidth size of the second control resource set CORESET associated with the second initial downlink BWP;

The bandwidth size of the first initial downlink BWP;

The bandwidth size of the second initial downlink BWP.
The method according to claim 15, wherein the original length of the first uplink DCI before the DCI length alignment operation is determined by one of the following:

any of the second parameters;

The item with the largest value in the second parameter;

The item with the smallest value in the second parameter;

The second parameter includes:

The bandwidth size of the second initial uplink BWP;

The bandwidth size of the first initial uplink BWP.
The method according to any one of claims 15-17, further comprising:

In the case where the first initial BWP includes the first initial downlink BWP, the terminal parses the target DCI on the common search space group according to the first DCI alignment;

Wherein, the first DCI alignment includes at least one of the following:

The length of the first downlink DCI is aligned to the length of the second downlink DCI;

The length of the second uplink DCI is aligned to the length of the first downlink DCI.
The method according to claim 18, wherein the length of the second uplink DCI is aligned to the length of the first downlink DCI, comprising:

If the terminal cannot switch between the first initial downlink BWP and the second initial downlink BWP, the length of the second uplink DCI is aligned to the length of the first downlink DCI.
The method according to claim 18, wherein the length of the first downlink DCI is aligned to the length of the second downlink DCI, comprising:

If the terminal is capable of switching between the first initial downlink BWP and the second initial downlink BWP, the length of the first downlink DCI is aligned to the length of the second downlink DCI.
The method according to any one of claims 15-17, further comprising:

In the case where the first initial BWP includes the first initial uplink BWP, the terminal parses the target DCI on the common search space group according to the second DCI alignment;

Wherein, the second DCI alignment includes at least one of the following:

The length of the first uplink DCI is aligned to the length of the second downlink DCI;

The length of the first uplink DCI is aligned to the length of the second uplink DCI.
The method according to claim 21, wherein the length of the first uplink DCI is aligned to the length of the second uplink DCI, comprising:

In a case where the terminal is capable of switching between the first initial uplink BWP and the second initial uplink BWP, the length of the first uplink DCI is aligned to the length of the second uplink DCI.
The method according to any one of claims 15-17, further comprising:

In the case where the first initial BWP includes the first initial downlink BWP and the first initial uplink BWP, the terminal parses the target DCI on the common search space group according to the third DCI alignment;

Wherein, the third DCI alignment includes at least one of the following:

The length of the first downlink DCI is aligned to the length of the second downlink DCI;

The length of the first uplink DCI is aligned to the length of the first downlink DCI;

The length of the first uplink DCI is aligned to the length of the second downlink DCI;

The length of the first uplink DCI is aligned to the length of the second uplink DCI;

The first downlink DCI maintains the original length.
The method according to claim 23, wherein the length of the first uplink DCI is aligned to the length of the first downlink DCI, comprising:

If the terminal cannot switch between the first initial downlink BWP and the second initial downlink BWP, or when the terminal cannot switch between the first initial downlink BWP and the second initial downlink BWP In the case of switching between the first initial uplink BWP and the second initial uplink BWP, the length of the first uplink DCI is aligned to the length of the first downlink DCI.
The method according to claim 23, wherein the length of the first uplink DCI is aligned to the length of the second uplink DCI, comprising:

In a case where the terminal is capable of switching between the first initial uplink BWP and the second initial uplink BWP, the length of the first uplink DCI is aligned to the length of the second uplink DCI.
The method according to claim 23, wherein the length of the first uplink DCI is aligned to the length of the second downlink DCI, comprising:

In a case where the terminal is capable of switching between the first initial downlink BWP and the second initial downlink BWP, the length of the first uplink DCI is aligned to the length of the second downlink DCI.
The method according to claim 23, wherein the first downlink DCI maintains the original length, comprising:

In a case where the terminal cannot switch between the first initial downlink BWP and the second initial downlink BWP, the first downlink DCI maintains the original length.
The method according to claim 23, wherein the length of the first downlink DCI is aligned to the length of the second downlink DCI, comprising:

In a case where the terminal is capable of switching between the first initial downlink BWP and the second initial downlink BWP, the length of the first downlink DCI is aligned to the length of the second downlink DCI.
A device for sending downlink control information, comprising:

a configuration module, configured to configure a first initial bandwidth part BWP for the terminal;

A processing module, configured to perform a DCI length alignment operation on the target downlink control information DCI sent on the common search space group;

a sending module, configured to send the target DCI after the DCI length alignment operation to the terminal on the common search space group;

Wherein, the target DCI includes a first type of DCI and/or a second type of DCI, the first type of DCI is used to schedule time-frequency resources on the first initial BWP, and the second type of DCI is used to schedule the first Two time-frequency resources on the initial BWP, the first type of DCI includes at least one of the first downlink DCI and the first uplink DCI, and the second type of DCI includes the second downlink DCI and the second uplink DCI At least one item; the first initial BWP includes: at least one of the first initial downlink BWP and the first initial uplink BWP, and the second initial BWP includes: the second initial downlink BWP and the second initial uplink BWP at least one.
A device for obtaining downlink control information, applied to a terminal configured with a first initial bandwidth part BWP, comprising:

A detection module, configured to detect target downlink control information DCI on the common search space group;

Wherein, the target DCI is sent by the network side device after performing a DCI length alignment operation;

The DCI length alignment operation includes an alignment operation on the first type of DCI and/or the second type of DCI; the first type of DCI is used to schedule time-frequency resources on the first initial BWP, and the second type of DCI For scheduling time-frequency resources on the second initial BWP, the first type of DCI includes at least one of the first downlink DCI and the first uplink DCI, and the second type of DCI includes the second downlink DCI and the first 2. At least one item of uplink DCI;

The first initial BWP includes: at least one of a first initial downlink BWP and a first initial uplink BWP, and the second initial BWP includes: at least one of a second initial downlink BWP and a second initial uplink BWP.
A network side device, comprising a processor, a memory, and a program or instruction stored in the memory and operable on the processor, when the program or instruction is executed by the processor, it realizes the following claims 1 to 1: Steps in the method for sending downlink control information described in any one of 14.
A terminal, comprising a processor, a memory, and a program or instruction stored on the memory and operable on the processor, when the program or instruction is executed by the processor, any of claims 15 to 28 can be realized. Steps in one of the methods for obtaining downlink control information.
A readable storage medium, on which a program or instruction is stored, and when the program or instruction is executed by a processor, the method for sending downlink control information according to any one of claims 1 to 14 is realized, or The steps of the method for obtaining downlink control information according to any one of claims 15 to 28.