CN115622667A

CN115622667A - Downlink control information sending and acquiring methods and devices, terminal and network side equipment

Info

Publication number: CN115622667A
Application number: CN202110792032.XA
Authority: CN
Inventors: 李东儒; 王理惠; 吴凯
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2021-07-13
Filing date: 2021-07-13
Publication date: 2023-01-17
Also published as: WO2023284638A1

Abstract

The application discloses a method, a device, a terminal and a network side device for sending and acquiring downlink control information, which belong to the technical field of communication, and the method for sending the downlink control information comprises the following steps: the network side equipment configures a first initial BWP for the terminal; the network side equipment carries out DCI length alignment operation on the target DCI transmitted on the public search space group; the network side equipment sends the target DCI after the DCI length alignment operation to the terminal on the public search space group; the target DCI comprises first DCI and/or second DCI, the first DCI is used for scheduling time-frequency resources on the first initial BWP, the second DCI is used for scheduling time-frequency resources on the second initial BWP, the first DCI comprises first downlink DCI and/or first uplink DCI, and the second DCI comprises second downlink DCI and/or second uplink DCI; the first initial BWP includes: a first initial downstream BWP and/or a first initial upstream BWP, the second initial BWP comprising: a second initial downstream BWP and/or a second initial upstream BWP.

Description

Downlink control information sending and acquiring methods and devices, terminal and network side equipment

Technical Field

The present application belongs to the field of communications, and in particular, to a method, an apparatus, a terminal, and a network side device for sending and acquiring downlink control information.

Background

The size (size) of Downlink Control Information (DCI) (which may be referred to as DCI 1-0) in format 1-0 currently carried on Common Search Space (CSS) is determined by initial Downlink bandwidth portion (initial DL BWP) or Control resource set0 (CORESET 0), and DCI 0-0 needs to be aligned with the size of DCI 1-0 (which may be referred to as DCI 0-0) (i.e., two DCI sizes are shared). However, if the network configures multiple initial DL BWPs and/or multiple initial uplink bandwidth portions (initial UL BWPs) for a User Equipment (UE), the terminal may need to detect DCI with more than 4 sizes on these initial DL BWPs, which is a new challenge to the blind detection capability and complexity of the UE.

Disclosure of Invention

Embodiments of the present application provide a method, an apparatus, a terminal, and a network side device for sending and acquiring downlink control information, which can solve the problem that when at least one additional initial BWP is introduced, DCI size understanding by a UE and a network is inconsistent, and meanwhile, the complexity of blind detection of the UE is increased.

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

the network side equipment configures a first initial bandwidth part BWP for the terminal;

the network side equipment carries out DCI length alignment operation on the DCI sent on the public search space group;

the network side equipment sends the target DCI after the DCI length alignment operation to the terminal on the public search space group;

the target DCI comprises first-class DCI and/or second-class DCI, wherein the first-class DCI is used for scheduling time-frequency resources on the first initial BWP, the second-class DCI is used for scheduling time-frequency resources on the second initial BWP, the first-class DCI comprises at least one item of first downlink DCI and first uplink DCI, and the second-class DCI comprises at least one item of second downlink DCI and second uplink DCI; the first initial BWP comprises: at least one of a first initial downlink BWP and a first initial uplink BWP, the second initial BWP comprising: at least one of a second initial downlink BWP and a second initial uplink BWP.

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;

the processing module is used for carrying out DCI length alignment operation on the target downlink control information DCI transmitted on the public 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;

the target DCI comprises a first type of DCI and/or a second type of DCI, wherein the first type of DCI is used for scheduling time-frequency resources on the first initial BWP, the second type of DCI is used for scheduling time-frequency resources on the second initial BWP, the first type of DCI comprises at least one of first downlink DCI and first uplink DCI, and the second type of DCI comprises at least one of second downlink DCI and second uplink DCI; the first initial BWP comprises: at least one of a first initial downlink BWP and a first initial uplink BWP, the second initial BWP comprising: at least one of a second initial downlink BWP and a second initial uplink BWP.

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

detecting, by a terminal configured with a first initial bandwidth part BWP, a target downlink control information DCI on a common search space group;

the target DCI is sent after DCI length alignment operation is carried out on the network side equipment;

the DCI length alignment operation comprises an alignment operation on the first type DCI and/or the second type DCI; the first kind of DCI is used for scheduling time-frequency resources on the first initial BWP, the second kind of DCI is used for scheduling time-frequency resources on the second initial BWP, the first kind of DCI comprises at least one of first downlink DCI and first uplink DCI, and the second kind of DCI comprises at least one of second downlink DCI and second uplink DCI;

the first initial BWP comprises: at least one of a first initial downstream BWP and a first initial upstream BWP, the second initial BWP comprising: at least one of a second initial downlink BWP and a second initial uplink BWP.

In a fourth aspect, a downlink control information obtaining apparatus is provided, which is applied to a terminal configured with a first initial bandwidth part BWP, and includes:

a detection module, configured to detect DCI on a common search space group;

the target DCI is sent after DCI length alignment operation is carried out by network side equipment;

the DCI length alignment operation comprises alignment operation on first type DCI and/or second type DCI; the first kind of DCI is used for scheduling time-frequency resources on the first initial BWP, the second kind of DCI is used for scheduling time-frequency resources on the second initial BWP, the first kind of DCI comprises at least one of first downlink DCI and first uplink DCI, and the second kind of DCI comprises at least one of second downlink DCI and second uplink DCI;

In a fifth aspect, a network-side device is provided, which comprises a processor, a memory, and a program or instructions stored on the memory and executable on the processor, wherein the program or instructions, when executed by the processor, implement the steps of the method according to the first aspect.

A sixth aspect provides a network side device, including a processor and a communication interface, where the processor is configured to configure a first initial bandwidth portion BWP for a terminal, and perform a DCI length alignment operation on a target downlink control information DCI sent on a common search space group, and the communication interface is configured to send the target DCI after the DCI length alignment operation on the common search space group to the terminal;

the target DCI comprises a first type of DCI and/or a second type of DCI, wherein the first type of DCI is used for scheduling time-frequency resources on the first initial BWP, the second type of DCI is used for scheduling time-frequency resources on the second initial BWP, the first type of DCI comprises at least one of first downlink DCI and first uplink DCI, and the second type of DCI comprises at least one of second downlink DCI and second uplink DCI; the first initial BWP comprises: at least one of a first initial downstream BWP and a first initial upstream BWP, the second initial BWP comprising: at least one of a second initial downlink BWP and a second initial uplink BWP.

In a seventh aspect, a terminal is provided, which comprises a processor, a memory, and a program or instructions stored on the memory and executable on the processor, the program or instructions, when executed by the processor, implementing the steps of the method according to the third aspect.

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

the DCI length alignment operation comprises alignment operation on first type DCI and/or second type DCI; the first type of DCI is used for scheduling time-frequency resources on the first initial BWP, the second type of DCI is used for scheduling time-frequency resources on the second initial BWP, the first type of DCI comprises at least one of first downlink DCI and first uplink DCI, and the second type of DCI comprises at least one of second downlink DCI and second uplink DCI;

In a ninth aspect, there is provided a readable storage medium on which is stored a program or instructions which, when executed by a processor, carries out the steps of the method of the first aspect or the steps of the method of the third aspect.

In a tenth aspect, a chip is provided, the chip comprising a processor and a communication interface, the communication interface being coupled to the processor, the processor being configured to execute a program or instructions to implement the steps of the method according to the first, second or third aspect.

In an eleventh aspect, there is provided a computer program/program product stored on a non-volatile storage medium, the program/program product being executable by at least one processor to implement the steps of the method according to the first or third aspect.

In the embodiment of the present application, when the first initial BWP is configured for the terminal, the DCI length alignment operation is performed on the target DCI transmitted on the common search space group, so as to ensure that the DCI size of the UE is consistent with that of the network and the blind detection complexity of the DCI by the UE is not increased when at least one additional initial BWP is introduced.

Drawings

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

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

fig. 3 is a block diagram of a downlink control information transmitting apparatus according to an embodiment of the present application;

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

fig. 5 is a flowchart illustrating a downlink control information obtaining method according to an embodiment of the present application;

fig. 6 is a block diagram of a downlink control information acquiring apparatus according to an embodiment of the present application;

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

fig. 8 is a 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 described below clearly with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments that can be derived from the embodiments given herein by a person of ordinary skill in the art are intended to be within the scope of the present disclosure.

The terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. 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 other sequences than those illustrated or otherwise described herein, and that the terms "first" and "second" used herein generally refer to a class and do not limit the number of objects, for example, a first object can be one or more. In addition, "and/or" in the specification and the claims means at least one of connected objects, and a character "/" generally means that a preceding and succeeding related objects are in an "or" relationship.

It is noted that the techniques described in the embodiments of the present application are not limited to Long Term Evolution (LTE)/LTE Evolution (LTE-Advanced) systems, but may also be used in other wireless communication systems, such as 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 (SC-FDMA), and other systems. The terms "system" and "network" are often used interchangeably in embodiments of the present application, and the described techniques may be used for both the above-mentioned systems and radio technologies, as well as for other systems and radio technologies. The following description describes a New Radio (NR) system for purposes of example, and NR terminology is used in much of the description below, but the techniques may also be applied to applications other than NR system applications, such as 6th generation,6g communication systems.

Fig. 1 shows a block diagram of a wireless communication system to which embodiments of the present application are applicable. The wireless communication system includes a terminal 11 and a network-side device 12. Wherein, the terminal 11 may also be called as a terminal Device or a User Equipment (UE), the terminal 11 may be a Mobile phone, a Tablet Personal Computer (Tablet Personal Computer), a Laptop Computer (Laptop Computer) or a notebook Computer, a Personal Digital Assistant (PDA), a palmtop Computer, a netbook, a super-Mobile Personal Computer (UMPC), a Mobile Internet Device (MID), a Wearable Device (Wearable Device) or a vehicle-mounted Device (VUE), a pedestrian terminal (PUE), and other terminal side devices, the Wearable Device includes: smart watches, bracelets, earphones, glasses, and the like. 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 the Base Station may be referred to as a node B, an evolved node B, an access Point, a Base Transceiver Station (BTS), a radio Base Station, a radio Transceiver, a Basic Service Set (BSS), an Extended Service Set (ESS), a node B, an evolved node B (eNB), a home node B, a WLAN access Point, a WiFi node, a Transmit Receiving Point (TRP), or some other suitable terminology in the field, as long as the same technical effect is achieved, the Base Station is not limited to a specific technical vocabulary, and 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 a specific type of the Base Station is not limited.

The following describes in detail, with reference to the accompanying drawings, methods, apparatuses, terminals, and network side devices for sending and acquiring downlink control information provided in embodiments of the present application through some embodiments and application scenarios thereof.

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

step 201, a network side device configures a first initial bandwidth portion BWP for a terminal;

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

It should be noted here that the first initial BWP refers to an initial BWP additionally configured for the terminal, and may be referred to as an additional initial BWP, which is different from an existing initial BWP, for example, the additional initial BWP may be a separate initial BWP, and accordingly, the network-side device may configure only a separate initial DL BWP for the terminal, may also configure only a separate initial UL BWP for the terminal, and may also configure both the separate initial DL BWP and the separate initial UL BWP for the terminal.

Alternatively, the first initial BWP may be at least one. For example, the network side device configures the terminal with two first initial bandwidth portions. For another example, the network side device may configure only one first initial bandwidth portion to the terminal.

In the 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 having a specific capability or a specific type of terminal. In some embodiments, the terminal refers to a Reduced Capability (RedCap) terminal, such as a watch, bracelet, or the like; in another embodiment, the terminal may be a non-reduced capability (non-red cap) terminal, such as a device like a mobile phone.

For a better understanding, please refer to the differences between reduced capability terminals and non-reduced capability terminals as listed in table 1 below.

TABLE 1 comparison of non-RedCap terminal to RedCap terminal capabilities Table

As can be seen from table 1, the reduced capability terminal and the non-reduced capability terminal have great differences in the terminal capabilities, such as the number of receiving antennas and the maximum bandwidth capability. Terminals with different capabilities may use different initial bandwidth portions, which may avoid congestion problems caused by all terminals using the same initial BWP.

Step 202, the network side device performs DCI length alignment operation on the target downlink control information DCI transmitted 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 transmitted by the network side device includes a first-type DCI and/or a second-type DCI.

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

Note that, the second initial BWP includes: at least one of a second initial downstream BWP and a second initial upstream BWP, the second initial BWP referring to an existing initial BWP, which includes the existing initial downstream BWP and the existing initial upstream BWP. Further, the second type of DCI is used to schedule the time-frequency resource on a second initial BWP, where the second type of DCI includes at least one of a second downlink DCI and a second uplink DCI; specifically, the second downlink DCI is used to schedule the PDSCH on the second initial downlink BWP, optionally, the second downlink DCI refers to DCI with format 1-0, the second uplink DCI is used to schedule the PUSCH on the second initial uplink BWP, and optionally, the second uplink DCI refers to DCI with format 0-0.

In one embodiment, the terminal is a reduced-capability terminal, the first initial bandwidth portion is an initial bandwidth portion configured by the network-side device to the reduced-capability terminal, and the second initial bandwidth portion is an initial bandwidth portion configured by the network-side device to a non-reduced-capability terminal (i.e., a normal terminal or a legacy terminal); for another example, the first initial bandwidth portion may be an initial bandwidth portion that the network-side device configures to a non-reduced capability terminal, and the second initial bandwidth portion may be an initial bandwidth portion that the network-side device configures to a reduced capability terminal.

In this embodiment of the present application, when the network-side device configures a first initial BWP for a terminal, the network-side device performs a DCI length alignment operation on target DCI transmitted on a common search space group, so as to ensure that, when at least one additional initial BWP is introduced, the DCI size of the UE is understood consistently with the network and the blind detection complexity of the DCI by the UE is not increased.

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

a11, any one of the first parameters;

it should be noted here that the first parameter includes the following items:

a21, bandwidth size of a first control resource set (CORESET) associated with the first initial downlink BWP;

it should be noted that, in general, the initial downlink BWP is associated with a core set (i.e. core set # 0) with a number or index of 0, that is, the original length of the first downlink DCI before the DCI length alignment operation may be determined by the bandwidth size of the core set #0 associated with the first initial downlink BWP, specifically, the bandwidth size may refer to the number of Resource Blocks (RBs). The first initial downlink BWP is associated with the first core set, which means that the first core set is configured on the first initial downlink BWP.

A22, the bandwidth size of a second CORESET associated with the second initial downlink BWP;

it should be noted that, in general, the initial downlink BWP is associated with a core set (i.e. core set # 0) with a number or index of 0, that is, the original length of the first downlink DCI before the DCI length alignment operation may be determined by the bandwidth size of the core set #0 associated with the second initial downlink BWP, and specifically, the bandwidth size may refer to the number of RBs. The second initial downstream BWP is associated with a second CORESET, which means that the second CORESET is configured on the second initial downstream BWP.

A23, bandwidth size of the first initial downlink BWP;

that is, 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, and specifically, the bandwidth size may refer to the number of RBs.

A24, the bandwidth size of the second initial downlink BWP;

that is, in this case, the original length of the first downlink DCI before the DCI length alignment operation is equal to the bandwidth size of the second initial downlink BWP, and 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 to a24, specifically which one of a21 to a24 is used may be configured by the network side device, or may be agreed by the protocol.

A12, one item with the largest value in at least two items in the first parameters;

specifically, if the network side device can obtain at least two items of a21-a24, the network side device may select one item with the largest value (the largest value here refers to the largest bandwidth) among the at least two items to determine the original length of the first downlink DCI before the DCI length alignment operation; for example, when the network side device can acquire a21, a22, and a24, the network side device determines which of a21, a22, and a24 indicates the largest bandwidth, and if the bandwidth indicated by a22 is the largest, determines that the original length of the first downlink DCI before the DCI length alignment operation is determined by the bandwidth size of the second core set associated with the second initial downlink BWP.

A13, one item with the minimum value in at least two items in the first parameters;

specifically, if the network side device can obtain at least two items of a21-a24, the network side device may select one item with the smallest value (the smallest value here refers to the smallest bandwidth) among the at least two items to determine the original length of the first downlink DCI before the DCI length alignment operation; for example, when the network-side device can acquire a21, a22, and a23, the network-side device determines which of a21, a22, and a23 indicates the smallest bandwidth, and if the bandwidth indicated by a23 is the smallest, determines 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 one of:

b11, any one of the second parameters;

it should be noted here that the second parameter includes the following items:

b21, bandwidth size of the second initial upstream BWP;

that is, 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, and specifically, the bandwidth size may refer to the number of RBs.

B22, bandwidth size of the first initial upstream BWP;

that is, 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, and 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, and specifically, whether B21 or B22 is used may be determined by a network side device or a protocol convention.

B12, one item with the largest value in the second parameters;

specifically, if the network side device can obtain B21 and B22, the network side device may select one of the items with the largest value (the largest value here refers to the largest bandwidth) in B21 and B22 to determine the original length of the first uplink DCI before the DCI 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, one item with the minimum value in the second parameters;

specifically, if the network side device can obtain B21 and B22, the network side device may select one of the B21 and B22 with the smallest value (the smallest value here refers to the smallest bandwidth) to determine the original length of the first uplink DCI before the DCI length alignment operation; for example, when the network side device determines that the bandwidth indicated by B21 is minimum, 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 following describes in detail a specific implementation of an embodiment of the present application from the perspective that the first initial BWP includes different contents, respectively.

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

That is, in this case, the first initial BWP only includes the first initial downlink BWP, and optionally, in this case, step 202 may adopt an implementation manner as follows:

the network side equipment carries out DCI length alignment operation on the target DCI transmitted on the public search space group according to the first DCI alignment mode;

specifically, the first DCI alignment manner includes at least one of:

c11, aligning the length of the first downlink DCI to the length of the second downlink DCI;

in this way, 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 manner of the alignment operation mentioned in the embodiment of the present application may be:

s1, if the length of the first downlink DCI is greater than the length of the second downlink DCI, the first downlink DCI needs to be truncated, for example, some bits in the first downlink DCI are truncated until the length of the first downlink DCI is equal to the length of the second downlink DCI. For example, MBS bits of a Frequency Domain Resource Allocation (FDRA) domain in the first downlink DCI are truncated, i.e., MBS bits in the FDRA domain are deleted.

S2, if the length of the first downlink DCI is smaller than that of the second downlink DCI, filling the first downlink DCI, and adopting a 0 filling mode; further, an optional filling manner is: performing 0 padding in the last of all domains of the first downlink DCI until the length of the first downlink DCI is padded to be equal to that of the second downlink DCI; another optional filling mode is as follows: comparing each information field in the first downlink DCI and the second downlink DCI, performing 0 padding on 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, performing 0 padding in the information field a in the first downlink DCI (usually, 0 is padded in the last information field a), and ensuring that the length of the information field a in the padded first downlink DCI is equal to the length of the corresponding information field a in the second downlink DCI.

It should be noted that the principle of implementation of the alignment operation mentioned herein is applicable to the alignment operation used in the following, and the following description is not repeated one by one.

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 performing the switching between the first initial downlink BWP and the second initial downlink BWP; that is to say, the premise that the length of the first downlink DCI is aligned with the length of the second downlink DCI is that the terminal can perform the switching between the first initial downlink BWP and the second initial downlink BWP, that is, the terminal applying the first initial downlink BWP is still switched back to the second initial downlink BWP.

C12, aligning the length of the second uplink DCI to the length of the first downlink DCI;

in this way, 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 align the length of the second uplink DCI with the length of the first downlink DCI when the terminal cannot perform the switching between the first initial downlink BWP and the second initial downlink BWP, that is, the premise that the length of the second uplink DCI is aligned with the length of the first downlink DCI is that the terminal cannot perform the switching between the first initial downlink BWP and the second initial downlink BWP, that is, the terminal applying the first initial downlink BWP is not switched back to the second initial downlink BWP.

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

That is, in this case, the first initial BWP only includes the first initial upstream BWP, and optionally, in this case, step 202 may be implemented by:

the network side equipment carries out DCI length alignment operation on the target DCI transmitted on the public search space group according to the second DCI alignment mode;

wherein the second DCI alignment mode comprises at least one of:

c21, aligning the length of the first uplink DCI to the length of the second downlink DCI;

in this way, 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, aligning the length of the first uplink DCI to the length of the second uplink DCI;

in this way, 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 performing the switching between the first initial uplink BWP and the second initial uplink BWP; that is to say, the premise that the length of the first uplink DCI is aligned to the length of the second uplink DCI is that the terminal can perform switching between the first initial uplink BWP and the second initial uplink BWP, that is, the terminal applying the first initial uplink BWP is still switched back to the second initial uplink BWP.

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

That is, in this case, the first initial BWP includes a first initial downlink BWP and a first initial uplink BWP, and optionally, in this case, step 202 may be implemented as follows:

the network side equipment carries out DCI length alignment operation on the target DCI transmitted on the public search space group according to the third DCI alignment mode;

wherein the third DCI alignment pattern comprises at least one of:

c31, aligning the length of the first uplink DCI to the length of the first downlink DCI;

in this way, 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 align the length of the first uplink DCI to the length of the first downlink DCI when the terminal is unable to perform the switching between the first initial downlink BWP and the second initial downlink BWP; that is, the precondition that the length of the first uplink DCI is aligned to the length of the first downlink DCI is that the terminal cannot perform the switching between the first initial downlink BWP and the second initial downlink BWP, that is, the terminal applying the first initial downlink BWP will not switch back to the second initial downlink BWP.

Optionally, the network-side device may align the length of the first uplink DCI to the length of the first downlink DCI when the terminal cannot perform the switching between the first initial downlink BWP and the second initial downlink BWP and the switching between the first initial uplink BWP and the second initial uplink BWP; that is, the precondition that the length of the first uplink DCI is aligned to the length of the first downlink DCI is that the terminal cannot perform the switching between the first initial 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 switch back to the second initial BWP.

C32, aligning the length of the first uplink DCI 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 performing the switching between the first initial downlink BWP and the second initial downlink BWP; that is to say, the premise that the length of the first uplink DCI is aligned with the length of the second uplink DCI is that the terminal can perform the switching between the first initial downlink BWP and the second initial downlink BWP, that is, the terminal applying the first initial downlink BWP is still switched back to the second initial downlink BWP.

C33, aligning the length of the first uplink DCI 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 performing the switching between the first initial uplink BWP and the second initial uplink BWP; that is to say, the premise that the length of the first uplink DCI is aligned to the length of the second uplink DCI is that the terminal can perform switching between the first initial uplink BWP and the second initial uplink BWP, that is, the terminal will switch back to the second initial uplink BWP by applying the first initial uplink BWP.

C34, aligning the length of the first downlink DCI to the length of the second downlink DCI;

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 performing the switching between the first initial downlink BWP and the second initial downlink BWP; that is to say, the premise that the length of the first downlink DCI is aligned with the length of the second downlink DCI is that the terminal can perform the switching between the first initial downlink BWP and the second initial downlink BWP, that is, the terminal applying the first initial downlink BWP is still switched back to the second initial downlink BWP.

C35, the first downlink DCI keeps the original length;

in this way, that is, the network side device does not perform 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 is unable to perform the switching between the first initial downlink BWP and the second initial downlink BWP; that is, the precondition that the first downlink DCI maintains the original length is that the terminal cannot perform the switching between the first initial downlink BWP and the second initial downlink BWP, that is, the terminal applying 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, that is, for the first uplink DCI, the network side device selects one of C31 to C33, and for the first downlink DCI, the network side device selects one of C34 and C35.

It should be noted that, in the present application, the terminal applying the first initial downlink BWP and/or the first initial uplink BWP may be a redcap terminal.

The following takes the first initial downlink BWP as the partial initial DL BWP and the first initial uplink BWP as the partial initial UL BWP as an example, and the above several cases are exemplified as follows.

In the first practical application case, the network side device configures the partial initial DL BWP and the partial initial UL BWP

The network side device configures CORESET0 on the separate initial DL BWP, and the CSS is associated on the CORESET0, wherein the type of the CSS comprises at least one of type 0, type 0A, type 1 and type 2.

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

Optionally, in case that a terminal (e.g., redcap UE) applying the separate initial DL BWP does not switch back to the existing initial DL BWP, the following alignment scheme is adopted:

s11, the first downlink DCI keeps the original length and is not aligned with any DCI;

and S12, aligning the length of the first uplink DCI to the length of the first downlink DCI.

Alternatively, in case the terminal (e.g., redcap UE) applying the separate initial DL BWP still switches back to the existing initial DL BWP, the following alignment scheme is adopted:

s21, aligning the length of the first downlink DCI to the length of the second downlink DCI;

s22, aligning the length of the first uplink DCI to the length of the second uplink DCI, and then according to the existing protocol, continuing to align the length of the second uplink DCI to the length of the second downlink DCI; 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 aligned to the first downlink DCI first and then to the second downlink DCI) or the length of the first uplink DCI is aligned to the length of the second downlink DCI (using this branch means that the first uplink DCI is aligned to the second downlink DCI directly);

in practical application case two, the network side device is only configured with the separate initial DL BWP

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

s31, aligning the length of the first downlink DCI to the length of the second downlink DCI;

and S32, aligning 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.

In practical application case three, 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 existing initial DL BWP; and the first uplink DCI schedules the PUSCH on the second initial UL BWP.

Any of the following alignment schemes may be employed:

s41, aligning the length of the first uplink DCI to the length of the second downlink DCI;

s42, aligning the length of the first uplink DCI to the length of the second uplink DCI;

further, in this case, according to the existing protocol, the length of the second uplink DCI is aligned to the length of the second downlink DCI again.

It should be noted that, the embodiment of the present application provides a method for aligning fallback DCI (i.e. DCI 0-0 and DCI 1-0) sizes carried in CSS on the premise of introducing at least one additional initial BWP, which is capable of ensuring that understanding of the terminal and the network to the DCI sizes is consistent without increasing blind detection complexity of the terminal.

As shown in fig. 3, an embodiment of the present application further provides a downlink control information sending apparatus 300, including:

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

a processing module 302, configured to perform DCI length alignment operation on target downlink control information DCI transmitted on a 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, an original length of the first downlink DCI before the DCI length alignment operation is determined by one of:

any one of the first parameters;

one item with the largest value in at least two items in the first parameter;

one of the at least two items of the first parameter having the smallest value;

the first parameter includes:

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

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

a 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 one of:

any one of the second parameters;

one of the second parameters with the largest value is selected;

the smallest one of the second parameters;

the second parameter includes:

a bandwidth size of the second initial upstream BWP;

a bandwidth size of the first initial upstream BWP.

Optionally, the processing module 302 is configured to:

under the condition that the first initial BWP comprises a first initial downlink BWP, the network side equipment performs DCI length alignment operation on target DCI transmitted on a common search space group according to a first DCI alignment mode;

wherein the first DCI alignment mode comprises at least one of:

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, an implementation manner that the length of the second uplink DCI is aligned to the length of the first downlink DCI includes:

and when the terminal cannot perform switching between the first initial downlink BWP and the second initial downlink BWP, aligning the length of the second uplink DCI to the length of the first downlink DCI.

Optionally, an implementation manner that the length of the first downlink DCI is aligned to the length of the second downlink DCI includes:

and under the condition that the terminal can switch between the first initial downlink BWP and the second initial downlink BWP, aligning the length of the first downlink DCI to the length of the second downlink DCI.

Optionally, the processing module 302 is configured to:

under the condition that the first initial BWP comprises a first initial uplink BWP, the network side equipment performs DCI length alignment operation on target DCI transmitted on a common search space group according to a second DCI alignment mode;

wherein the second DCI alignment mode comprises at least one of:

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, an implementation manner that the length of the first uplink DCI is aligned to the length of the second uplink DCI includes:

and when the terminal can perform switching between the first initial uplink BWP and the second initial uplink BWP, aligning the length of the first uplink DCI to the length of the second uplink DCI.

Optionally, the processing module 302 is configured to:

under the condition that the first initial BWP includes a first initial downlink BWP and a first initial uplink BWP, the network side device performs a DCI length alignment operation on a target DCI transmitted on a common search space group according to a third DCI alignment mode;

wherein the third DCI alignment pattern comprises at least one of:

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

in a case where the terminal cannot perform the switching between the first initial downlink BWP and the second initial downlink BWP, or in a case where the terminal cannot perform the switching between the first initial downlink BWP and the second initial downlink BWP and the 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.

and under the condition that the terminal can switch between the first initial uplink BWP and the second initial uplink BWP, aligning the length of the first uplink DCI to the length of the second uplink DCI.

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

and when the terminal can perform switching between the first initial downlink BWP and the second initial downlink BWP, aligning the length of the first uplink DCI to the length of the second uplink DCI.

Optionally, the implementation manner that the first downlink DCI maintains the original length includes:

and in the case that the terminal cannot perform switching between the first initial downlink BWP and the second initial downlink BWP, the first downlink DCI maintains an original length.

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

It should be noted that, in the case that the network-side device configures the first initial BWP for the terminal, the network-side device in the embodiment of the present application performs a DCI length alignment operation on the target DCI transmitted on the common search space group first, and then performs the target DCI after the DCI length alignment operation, so as to ensure that the UE and the network understand the DCI size consistently and reduce the blind detection complexity of the UE when at least one additional initial BWP is introduced.

Preferably, an embodiment of the present application further provides a network-side device, which includes a processor, a memory, and a program or an instruction stored in the memory and executable on the processor, where the program or the instruction is executed by the processor to implement each process of the embodiment of the method for sending downlink control information on the network-side device, and can achieve the same technical effect, and in order to avoid repetition, details are not repeated here.

The embodiments of the present application further provide a readable storage medium, where a program or an instruction is stored in the computer readable storage medium, and when the program or the instruction is executed by a processor, the program or the instruction implements each process of the embodiment of the method for sending downlink control information applied to a network side device, and can achieve the same technical effect, and in order to avoid repetition, the detailed description is omitted here.

The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.

The embodiment of the present application further provides a network side device, which includes a processor and a communication interface, where the processor is configured to configure a first initial bandwidth portion BWP for a terminal; performing DCI length alignment operation on target downlink control information DCI transmitted on a common search space group; the communication interface is used for sending the target DCI after the DCI length alignment operation to the terminal on the public search space group;

The embodiment of the network side device corresponds to the embodiment of the method of the network side device, and all implementation processes and implementation modes of the embodiment of the method can be applied to the embodiment of the network side device and can achieve the same technical effect.

Specifically, the embodiment of the application further provides a network side device. As shown in fig. 4, the network-side device 400 includes: antenna 401, radio frequency device 402, baseband device 403. The antenna 401 is connected to a radio frequency device 402. In the uplink direction, the rf 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 information to be transmitted and transmits the information to the rf device 402, and the rf device 402 processes the received information and transmits the processed information through the antenna 401.

The above-mentioned frequency band processing means may be located in the baseband apparatus 403, and the method performed by the network side device in the above embodiment may be implemented in the baseband apparatus 403, where the baseband apparatus 403 includes the processor 404 and the memory 405.

The baseband apparatus 403 may include, for example, at least one baseband board, on which a plurality of chips are disposed, as shown in fig. 4, where one of the chips, for example, the processor 404, is connected to the memory 405 to call up the program in the memory 405 to perform the network side device operation shown in the above method embodiment.

The baseband device 403 may further include a network interface 406, for exchanging information with the radio frequency device 402, for example, a Common Public Radio Interface (CPRI).

Specifically, the network side device according to the embodiment of the present invention further includes: the instructions or programs stored in the memory 405 and capable of being executed on the processor 404, and the processor 404 calls the instructions or programs in the memory 405 to execute the method executed by each module shown in fig. 3, and achieve the same technical effect, and are not described herein in detail to avoid repetition.

Corresponding to the transmission of the network side device, as shown in fig. 5, an embodiment of the present application provides a downlink control information obtaining method, applied to a terminal configured with a first initial bandwidth portion BWP, including:

step 501, a terminal detects target downlink control information DCI on a common search space group;

the target DCI before the DCI length alignment operation comprises first type DCI and/or second type DCI; the first kind of DCI is used for scheduling time-frequency resources on the first initial BWP, the second kind of DCI is used for scheduling time-frequency resources on the second initial BWP, the first kind of DCI comprises at least one of first downlink DCI and first uplink DCI, and the second kind of DCI comprises at least one of second downlink DCI and second uplink DCI;

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

any one of the first parameters;

one item with the largest value in at least two items in the first parameter;

one of the at least two items of the first parameter having the smallest value;

the first parameter includes:

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

the bandwidth size of the first initial downlink BWP;

the bandwidth size of the second initial downlink BWP.

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

any one of the second parameters;

one of the second parameters with the largest value is selected;

the smallest one of the second parameters;

the second parameter includes:

a bandwidth size of a second initial upstream BWP;

a bandwidth size of the first initial upstream BWP.

Optionally, the method further includes:

under the condition that the first initial BWP comprises a first initial downlink BWP, the terminal analyzes target DCI on a common search space group according to a first DCI alignment mode;

wherein the first DCI alignment mode comprises at least one of:

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

Optionally, the method further includes:

under the condition that the first initial BWP comprises a first initial uplink BWP, the terminal analyzes target DCI on a common search space group according to a second DCI alignment mode;

wherein the second DCI alignment mode comprises at least one of:

Optionally, the method further comprises:

under the condition that the first initial BWP comprises a first initial downlink BWP and a first initial uplink BWP, the terminal analyzes the target DCI on the common search space group according to a third DCI alignment mode;

wherein the third DCI alignment mode comprises at least one of:

the first downlink DCI maintains the original length.

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

and under the condition that the terminal can switch between the first initial downlink BWP and the second initial downlink BWP, aligning the length of the first uplink DCI to the length of the second downlink DCI.

Optionally, an implementation manner that the first downlink DCI maintains an original length includes:

in a case where the terminal is not capable of performing the handover between the first initial downlink BWP and the second initial downlink BWP, the first downlink DCI maintains an original length.

and when the terminal can perform switching between the first initial downlink BWP and the second initial downlink BWP, aligning the length of the first downlink DCI to the length of the second downlink DCI.

It should be noted that how the network side device transmits the DCI, the terminal performs the DCI analysis in the same manner, that is, all the implementation manners in the above embodiments are applied to this embodiment, and the same technical effect can be achieved.

It should be noted that, in the downlink control information acquisition method provided in the embodiment of the present application, the execution main body may be a downlink control information acquisition device, or a control module in the downlink control information acquisition device, configured to execute the downlink control information acquisition method. In the embodiment of the present application, a downlink control information obtaining apparatus for executing a method for obtaining downlink control information is taken as an example, and the downlink control information obtaining apparatus provided in the embodiment of the present application is described.

As shown in fig. 6, an embodiment of the present application provides a downlink control information obtaining apparatus 600, applied to a terminal configured with a first initial bandwidth portion BWP, including:

a detecting module 601, configured to detect DCI on a common search space group;

any one of the first parameters;

one item with the largest value in at least two items in the first parameter;

one of the at least two items in the first parameter having the smallest value;

the first parameter includes:

a bandwidth size of the first initial downlink BWP;

the bandwidth size of the second initial downlink BWP.

any one of the second parameters;

one of the second parameters with the largest value is selected;

the smallest one of the second parameters;

the second parameter includes:

a bandwidth size of a second initial upstream BWP;

a bandwidth size of the first initial upstream BWP.

Optionally, the apparatus further comprises:

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

wherein the first DCI alignment mode comprises at least one of:

Optionally, the apparatus further comprises:

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

wherein the second DCI alignment mode comprises at least one of:

and under the condition that the terminal can perform switching between the first initial uplink BWP and the second initial uplink BWP, aligning the length of the first uplink DCI to the length of the second uplink DCI.

Optionally, the apparatus further comprises:

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

wherein the third DCI alignment mode comprises at least one of:

the first downlink DCI maintains the original length.

Optionally, an implementation manner that the length of the first uplink DCI is aligned to the length of the second downlink DCI includes:

The downlink control information obtaining apparatus in the embodiment of the present application may be an apparatus, an apparatus or an electronic device having an operating system, or a component, an integrated circuit, or a chip in a terminal. The device or the electronic equipment can be a mobile terminal or a non-mobile terminal. For example, the mobile terminal may include, but is not limited to, the type of the terminal 11 listed above, and the non-mobile terminal may be a server, a Network Attached Storage (NAS), a Personal Computer (PC), a television (television), a teller machine (teller machine), a self-service machine (kiosk), or the like, and the embodiments of the present application are not limited in particular.

The downlink control information obtaining device provided in the embodiment of the present application can implement each process implemented in the method embodiment of fig. 5, and achieve the same technical effect, and is not described here again to avoid repetition.

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

the DCI length alignment operation comprises an alignment operation on the first type DCI and/or the second type DCI; the first type of DCI is used for scheduling time-frequency resources on the first initial BWP, the second type of DCI is used for scheduling time-frequency resources on the second initial BWP, the first type of DCI comprises at least one of first downlink DCI and first uplink DCI, and the second type of DCI comprises at least one of second downlink DCI and second uplink DCI;

The terminal embodiment corresponds to the terminal-side method embodiment, and all implementation processes and implementation manners of the method embodiment can be applied to the terminal embodiment and can achieve the same technical effect. Specifically, fig. 7 is a schematic diagram of a hardware structure of a terminal for implementing the embodiment of the present application.

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

Those skilled in the art will appreciate that the terminal 700 may further include a power supply (e.g., a battery) for supplying power to various components, which may be logically connected to the processor 710 via a power management system, so as to manage charging, discharging, and power consumption management functions via the power management system. The terminal structure shown in fig. 7 does not constitute a limitation of the terminal, and the terminal may include more or less components than those shown, or combine some components, or have a different arrangement of components, and will not be described again here.

It should be understood that, in the embodiment of the present application, the input Unit 704 may include a Graphics Processing Unit (GPU) 7041 and a microphone 7042, and the Graphics processor 7041 processes image data of a still picture or a video obtained by an image capturing device (e.g., a camera) in a video capturing mode or an image capturing mode. 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 referred to as a touch screen. The touch panel 7071 may include two portions, a touch detection device and a touch controller. Other input devices 7072 may include, but are not limited to, a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, a mouse, and a joystick, which are not described in detail herein.

In the embodiment of the present application, the radio frequency unit 701 receives downlink data from a network side device and then processes the downlink data in the processor 710; in addition, the uplink data is sent to the network side equipment. In general, 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 may be used to store software programs or instructions as well as various data. The memory 709 may mainly include a storage program or instruction area and a storage data area, wherein the storage program or instruction area may store an operating system, an application program or instruction (such as a sound playing function, an image playing function, etc.) required by at least one function, and the like. In addition, the Memory 709 may include a high-speed random access Memory and a nonvolatile Memory, where the nonvolatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable PROM (EEPROM), or a flash Memory. Such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid state storage device.

Processor 710 may include one or more processing units; alternatively, processor 710 may integrate an application processor that handles primarily the operating system, user interface, and application programs or instructions, etc. and a modem processor that handles primarily wireless communications, such as a baseband processor. It will be appreciated that the modem processor described above may not be integrated into processor 710.

Wherein the processor 710 is configured to implement:

detecting DCI (target downlink control information) on a public search space group;

the first initial BWP comprises: at least one of a first initial downlink BWP and a first initial uplink BWP, the second initial BWP comprising: one of a second initial downstream BWP and a second initial upstream BWP.

any one of the first parameters;

one item with the largest value in at least two items in the first parameter;

one of the at least two items of the first parameter having the smallest value;

the first parameter includes:

a bandwidth size of the first initial downlink BWP;

the bandwidth size of the second initial downlink BWP.

any one of the second parameters;

one of the second parameters with the largest value is selected;

the item with the smallest value in the second parameters;

the second parameter includes:

a bandwidth size of a second initial upstream BWP;

a bandwidth size of the first initial upstream BWP.

Optionally, the processor 710 is further configured to:

under the condition that the first initial BWP comprises a first initial downlink BWP, the terminal analyzes the target DCI on the common search space group according to a first DCI alignment mode;

wherein the first DCI alignment mode comprises at least one of:

Optionally, the processor 710 is configured to implement:

Optionally, the processor 710 is further configured to implement:

wherein the second DCI alignment mode comprises at least one of:

Optionally, the processor 710 is configured to implement:

Optionally, the processor 710 is further configured to implement:

under the condition that the first initial BWP comprises a first initial downlink BWP and a first initial uplink BWP, the terminal analyzes target DCI on a common search space group according to a third DCI alignment mode;

wherein the third DCI alignment mode comprises at least one of:

the first downlink DCI maintains the original length.

Optionally, the processor 710 is configured to implement:

and when the terminal cannot perform switching between the first initial downlink BWP and the second initial downlink BWP, aligning the length of the first uplink DCI to the length of the first downlink DCI.

Optionally, the processor 710 is configured to implement:

Preferably, an embodiment of the present application further provides a terminal, including a processor, a memory, and a program or an instruction stored in the memory and capable of running on the processor, where the program or the instruction is executed by the processor to implement each process of the downlink control information acquisition method embodiment, and can achieve the same technical effect, and in order to avoid repetition, details are not repeated here.

The embodiment of the present application further provides a readable storage medium, where a program or an instruction is stored on the readable storage medium, and when the program or the instruction is executed by a processor, the program or the instruction implements each process of the downlink control information obtaining method embodiment, and can achieve the same technical effect, and in order to avoid repetition, details are not repeated here. The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.

Optionally, as shown in fig. 8, an embodiment of the present application further provides a communication device 800, which includes a processor 801, a memory 802, and a program or an instruction that is stored in the memory 802 and is executable on the processor 801, for example, when the communication device 800 is a terminal, the program or the instruction is executed by the processor 801 to implement each process of the foregoing downlink control information acquisition method embodiment, and can achieve the same technical effect. When the communication device 800 is a network-side device, the program or the instructions are executed by the processor 801 to implement the processes of the downlink control information sending method embodiment, and the same technical effect can be achieved.

A terminal as referred to in embodiments of the present application may refer to a device providing voice and/or data connectivity to a user, a handheld device having a wireless connection capability, or other processing device connected to a wireless modem, etc. In different systems, the names of the terminal devices may be different, for example, in a 5G system, the terminal device may be called a User Equipment (UE). A wireless terminal device, which may be a mobile terminal device such as a mobile telephone (or "cellular" telephone) and a computer having a mobile terminal device, e.g., a portable, pocket, hand-held, computer-included or vehicle-mounted mobile device, may communicate with one or more Core Networks (CNs) via a Radio Access Network (RAN), and may exchange language and/or data with the RAN. Examples of such devices include Personal Communication Service (PCS) phones, cordless phones, session Initiation Protocol (SIP) phones, wireless Local Loop (WLL) stations, and Personal Digital Assistants (PDAs). The wireless terminal device may also be referred to as a system, a subscriber unit (subscriber unit), a subscriber station (subscriber station), a mobile station (mobile), a remote station (remote station), an access point (access point), a remote terminal device (remote terminal), an access terminal device (access terminal), a user terminal device (user terminal), a user agent (user agent), and a user device (user device), which are not limited in this embodiment of the present application.

The network side device according to the embodiment of the present application may be a Base Transceiver Station (BTS) in Global System for Mobile communication (GSM) or Code Division Multiple Access (CDMA), a Base Station (NodeB, NB) in Wideband Code Division Multiple Access (WCDMA), an evolved Node B (evolved Node B, eNB or eNodeB) in LTE, a relay Station or an Access point, or a Base Station in a future 5G network, and the like, which is not limited herein.

The network-side device and the terminal may each use one or more antennas to perform Multiple-Input Multiple-Output (MIMO) transmission, where the MIMO transmission may be Single User MIMO (SU-MIMO) or Multi-User MIMO (MU-MIMO). The MIMO transmission may be 2D-MIMO, 3D-MIMO, FD-MIMO, or massive-MIMO, or may be diversity transmission, precoding transmission, beamforming transmission, or the like, depending on the form and number of root antenna combinations.

The embodiment of the present application further provides a chip, where the chip includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is configured to execute a program or an instruction to implement each process of the embodiment of the downlink control information sending method or the downlink control information obtaining method, and the same technical effect can be achieved, and 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 referred to as system-on-chip, system-on-chip or system-on-chip, etc.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising a component of' 8230; \8230;" does not exclude the presence of another like element in a process, method, article, or apparatus that comprises the element. Further, it should be noted that the scope of the methods and apparatus of the embodiments of the present application is not limited to performing the functions in the order illustrated or discussed, but may include performing the functions in a substantially simultaneous manner or in a reverse order based on the functions involved, e.g., the methods described may be performed in an order different than that described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

Through the description of the foregoing embodiments, it is clear to those skilled in the art that the method of the foregoing embodiments may be implemented by software plus a necessary general hardware platform, and certainly may also be implemented by hardware, but in many cases, the former is a better implementation. Based on such understanding, the technical solutions of the present application or portions thereof that contribute to the prior art may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal (which may be a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present application.

While the present embodiments have been described with reference to the accompanying drawings, it is to be understood that the invention is not limited to the precise embodiments described above, which are meant to be illustrative and not restrictive, and that various changes may be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. A method for sending downlink control information is characterized by comprising the following steps:

network side equipment carries out DCI length alignment operation on target downlink control information DCI transmitted on a common search space group;

the target DCI comprises first-class DCI and/or second-class DCI, wherein the first-class DCI is used for scheduling time-frequency resources on the first initial BWP, the second-class DCI is used for scheduling time-frequency resources on the second initial BWP, the first-class DCI comprises at least one item of first downlink DCI and first uplink DCI, and the second-class DCI comprises at least one item of second downlink DCI and second uplink DCI; the first initial BWP comprises: at least one of a first initial downstream BWP and a first initial upstream BWP, the second initial BWP comprising: at least one of a second initial downlink BWP and a second initial uplink BWP.

2. The method of claim 1, wherein an original length of the first downlink DCI before the DCI length alignment operation is determined by one of:

any one of the first parameters;

one item with the largest value in at least two items in the first parameter;

one of the at least two items of the first parameter having the smallest value;

the first parameter includes:

a bandwidth size of the first initial downlink BWP;

a bandwidth size of the second initial downlink BWP.

3. The method of claim 1, wherein an original length of the first uplink DCI before the DCI length alignment operation is determined by one of:

any one of the second parameters;

one of the second parameters with the largest value is selected;

the item with the smallest value in the second parameters;

the second parameter includes:

a bandwidth size of the second initial upstream BWP;

a bandwidth size of the first initial upstream BWP.

4. The method according to any one of claims 1 to 3, wherein the network side device performs a DCI length alignment operation on the target DCI transmitted on the common search space group, including:

wherein the first DCI alignment mode comprises at least one of:

5. The method of claim 4, wherein the length of the second uplink DCI is aligned to the length of the first downlink DCI, and wherein the method comprises:

6. The method of claim 4, wherein aligning a length of the first downlink DCI to a length of the second downlink DCI comprises:

7. The method according to any one of claims 1 to 3, wherein the network side device performs DCI length alignment on the target DCI transmitted on the common search space group, and the method comprises:

wherein the second DCI alignment mode comprises at least one of:

8. The method of claim 7, wherein the length of the first uplink DCI is aligned with the length of the second uplink DCI, and wherein the method comprises:

9. The method according to any one of claims 1 to 3, wherein the network side device performs a DCI length alignment operation on the target DCI transmitted on the common search space group, including:

wherein the third DCI alignment mode comprises at least one of:

the first downlink DCI maintains the original length.

10. The method of claim 9, wherein aligning a length of the first uplink DCI to a length of the first downlink DCI comprises:

11. The method of claim 9, wherein the length of the first uplink DCI is aligned with the length of the second uplink DCI, and wherein the method comprises:

12. The method of claim 9, wherein a length of the first uplink DCI is aligned with a length of the second downlink DCI, and wherein the method comprises:

13. The method of claim 9, wherein the first downlink DCI maintains an original length, comprising:

14. The method of claim 9, wherein aligning a length of the first downlink DCI to a length of the second downlink DCI comprises:

15. A method for acquiring downlink control information is characterized by comprising the following steps:

detecting, by a terminal configured with a first initial bandwidth part BWP, target downlink control information DCI on a common search space group;

16. The method of claim 15, wherein an original length of the first downlink DCI before the DCI length alignment operation is determined by one of:

any one of the first parameters;

one item with the largest value in at least two items in the first parameter;

one of the at least two items in the first parameter having the smallest value;

the first parameter includes:

a bandwidth size of the first initial downlink BWP;

the bandwidth size of the second initial downlink BWP.

17. The method of claim 15, wherein an original length of the first uplink DCI prior to the DCI length alignment operation is determined by one of:

any one of the second parameters;

one of the second parameters with the largest value is selected;

the item with the smallest value in the second parameters;

the second parameter includes:

a bandwidth size of a second initial upstream BWP;

a bandwidth size of the first initial upstream BWP.

18. The method of any one of claims 15-17, further comprising:

wherein the first DCI alignment mode comprises at least one of:

19. The method of claim 18, wherein a length of the second uplink DCI is aligned with a length of the first downlink DCI, and wherein the method comprises:

20. The method of claim 18, wherein a length of the first downlink DCI is aligned with a length of a second downlink DCI, and wherein the method comprises:

21. The method of any one of claims 15-17, further comprising:

wherein the second DCI alignment mode comprises at least one of:

22. The method of claim 21, wherein aligning a length of the first uplink DCI to a length of the second uplink DCI comprises:

23. The method of any one of claims 15-17, further comprising:

wherein the third DCI alignment mode comprises at least one of:

the first downlink DCI maintains an original length.

24. The method of claim 23, wherein aligning a length of the first uplink DCI to a length of the first downlink DCI comprises:

when the terminal cannot perform the switching between the first initial downlink BWP and the second initial downlink BWP, or when the terminal cannot perform the switching between the first initial downlink BWP and the second initial downlink BWP and the 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.

25. The method of claim 23, wherein aligning a length of the first uplink DCI to a length of the second uplink DCI comprises:

and under the condition that the terminal can switch 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.

26. The method of claim 23, wherein a length of the first uplink DCI is aligned with a length of the second downlink DCI, and wherein the method comprises:

27. The method of claim 23, wherein the first downlink DCI maintains an original length comprising:

28. The method of claim 23, wherein aligning a length of the first downlink DCI to a length of the second downlink DCI comprises:

29. A downlink control information transmitting apparatus, comprising:

30. A downlink control information obtaining apparatus, applied to a terminal configured with a first initial bandwidth part BWP, comprising:

a detection module, configured to detect DCI on a common search space group;

31. A network-side device, comprising a processor, a memory, and a program or instructions stored in the memory and executable on the processor, wherein the program or instructions, when executed by the processor, implement the steps of the downlink control information transmitting method according to any one of claims 1 to 14.

32. A terminal comprising a processor, a memory, and a program or instructions stored on the memory and executable on the processor, the program or instructions when executed by the processor implementing the steps of the downlink control information acquisition method according to any one of claims 15 to 28.

33. A readable storage medium, characterized in that the readable storage medium stores thereon a program or instructions which, when executed by a processor, implements the downlink control information transmitting method according to any one of claims 1 to 14, or implements the steps of the downlink control information acquiring method according to any one of claims 15 to 28.