Downlink control information sending and obtaining method, device, terminal and network side equipment

Abstract

The present application discloses a method, apparatus, terminal and network-side equipment for sending and acquiring downlink control information, and belongs to the field of communication technology. The downlink control information sending method of an embodiment of the present application includes: the network-side device configures a first initial BWP for the terminal; the network-side device performs a DCI length alignment operation on the target 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; 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 time-frequency resources on the second initial BWP, the first type of DCI includes a first downlink DCI and / or a first uplink DCI, and the second type of DCI includes a second downlink DCI and / or a second uplink DCI; the first initial BWP includes: a first initial downlink BWP and / or a first initial uplink BWP, and the second initial BWP includes: a second initial downlink BWP and / or a second initial uplink BWP.

Description

Technical Field

[0001] The present application relates to the field of communications, and in particular to a method, apparatus, terminal, and network-side equipment for sending and obtaining downlink control information. Background Art

[0002] Currently, the size of downlink control information (DCI) format 1-0 (referred to as DCI 1-0) carried in the 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 (referred to as DCI 0-0) (i.e., the two share the same DCI size). However, if the network configures multiple initial DL BWPs and / or multiple initial uplink bandwidth parts (initial UL BWPs) for a user equipment (UE), the terminal may need to detect more than four DCI sizes on these initial DL BWPs, which poses a new challenge to the UE's blind detection capability and complexity. Summary of the Invention

[0003] The embodiments of the present application provide a method, apparatus, terminal, and network-side device for sending and obtaining downlink control information, which can solve the problem that when at least one additional initial BWP is introduced, the UE and the network have inconsistent understandings of the DCI size, while increasing the blind detection complexity of the UE.

[0004] In a first aspect, a method for sending downlink control information is provided, comprising:

[0005] The network side device configures a first initial bandwidth part BWP for the terminal;

[0006] The network side device performs a DCI length alignment operation on the target downlink control information DCI sent on the common search space group;

[0007] The network side device sends the target DCI after the DCI length alignment operation to the terminal on the common search space group;

[0008] 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 time-frequency resources on the second initial BWP. The first type of DCI includes at least one of a first downlink DCI and a first uplink DCI, and the second type of DCI includes at least one of a second downlink DCI and a second 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.

[0009] In a second aspect, a downlink control information sending device is provided, including:

[0010] A configuration module, configured to configure a first initial bandwidth part BWP for the terminal;

[0011] A processing module, configured to perform a DCI length alignment operation on target downlink control information DCI sent on a common search space group;

[0012] a sending module, configured to send the target DCI after the DCI length alignment operation to the terminal on the common search space group;

[0013] 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 time-frequency resources on the second initial BWP. The first type of DCI includes at least one of a first downlink DCI and a first uplink DCI, and the second type of DCI includes at least one of a second downlink DCI and a second 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.

[0014] In a third aspect, a method for acquiring downlink control information is provided, including:

[0015] The terminal detects target downlink control information DCI on the common search space group, and the terminal is configured with a first initial bandwidth part BWP;

[0016] The target DCI is sent after the network side device performs a DCI length alignment operation;

[0017] The DCI length alignment operation includes an alignment operation on 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, the second type of DCI is used to schedule time-frequency resources on the second initial BWP, the first type of DCI includes at least one of a first downlink DCI and a first uplink DCI, and the second type of DCI includes at least one of a second downlink DCI and a second uplink DCI;

[0018] 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.

[0019] In a 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:

[0020] A detection module, configured to detect target downlink control information DCI on a common search space group;

[0021] The target DCI is sent by the network side device after performing a DCI length alignment operation;

[0022] The DCI length alignment operation includes an alignment operation on 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, the second type of DCI is used to schedule time-frequency resources on the second initial BWP, the first type of DCI includes at least one of a first downlink DCI and a first uplink DCI, and the second type of DCI includes at least one of a second downlink DCI and a second uplink DCI;

[0023] 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.

[0024] In the fifth aspect, a network side device is provided, which includes a processor, a memory, and a program or instruction stored in the memory and runnable on the processor, and when the program or instruction is executed by the processor, the steps of the method described in the first aspect are implemented.

[0025] In a sixth aspect, a network-side device is provided, including a processor and a communication interface, wherein the processor is configured to configure a first initial bandwidth part (BWP) for a terminal and perform a DCI length alignment operation on 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 to the terminal on the common search space group.

[0026] 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 time-frequency resources on the second initial BWP. The first type of DCI includes at least one of a first downlink DCI and a first uplink DCI, and the second type of DCI includes at least one of a second downlink DCI and a second 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.

[0027] In the seventh aspect, a terminal is provided, which includes a processor, a memory, and a program or instruction stored in the memory and executable on the processor, wherein the program or instruction, when executed by the processor, implements the steps of the method described in the third aspect.

[0028] In an eighth aspect, a terminal is provided, the terminal being configured with a first initial bandwidth part (BWP), comprising a processor and a communication interface, wherein the processor is configured to detect target downlink control information (DCI) on a common search space group;

[0029] The target DCI is sent after the network side device performs a DCI length alignment operation;

[0030] The DCI length alignment operation includes an alignment operation on 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, the second type of DCI is used to schedule time-frequency resources on the second initial BWP, the first type of DCI includes at least one of a first downlink DCI and a first uplink DCI, and the second type of DCI includes at least one of a second downlink DCI and a second uplink DCI;

[0031] 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.

[0032] In the ninth aspect, a readable storage medium is provided, on which a program or instruction is stored. When the program or instruction is executed by a processor, the steps of the method described in the first aspect are implemented, or the steps of the method described in the third aspect are implemented.

[0033] In the tenth aspect, a chip is provided, which includes a processor and a communication interface, the communication interface and the processor are coupled, and the processor is used to run programs or instructions to implement the steps of the method described in the first aspect, the second aspect or the third aspect.

[0034] In the eleventh aspect, a computer program / program product is provided, which is stored in a non-volatile storage medium, and the program / program product is executed by at least one processor to implement the steps of the method described in the first aspect or the third aspect.

[0035] In an embodiment of the present application, by configuring the first initial BWP for the terminal, a 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 a consistent understanding of the DCI size and the blind detection complexity of the UE for the DCI is not increased. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 is a block diagram of a wireless communication system to which embodiments of the present application may be applied;

[0037] Figure 2 1 is a flow chart of a method for sending downlink control information according to an embodiment of the present application;

[0038] Figure 3 This is a module diagram of a device for sending downlink control information according to an embodiment of the present application;

[0039] Figure 4 This is a structural block diagram of a network-side device according to an embodiment of the present application;

[0040] Figure 5 1 is a flow chart of a method for acquiring downlink control information according to an embodiment of the present application;

[0041] Figure 6 This is a module diagram of a device for acquiring downlink control information according to an embodiment of the present application;

[0042] Figure 7 is a structural block diagram of a terminal in an embodiment of the present application;

[0043] Figure 8 It is a structural block diagram of the communication device of an embodiment of the present application. DETAILED DESCRIPTION

[0044] The following will be combined with the accompanying drawings in the embodiments of this application to clearly describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of this application.

[0045] The terms "first," "second," and the like in the specification and claims of this application are used to distinguish similar objects, and are not used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of this application can be implemented in an order other than that illustrated or described herein, and that the objects distinguished by "first" and "second" are generally of the same type, and do not limit the number of objects. For example, the first object can be one or more. In addition, the term "and / or" in the specification and claims refers to at least one of the connected objects, and the character " / " generally indicates that the objects connected are in an "or" relationship.

[0046] It is worth noting that the technology described in the embodiments of the present application is not limited to the Long Term Evolution (LTE) / LTE-Advanced (LTE-A) system, but can 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" in the embodiments of the present application are often used interchangeably, and the described technology can be used for the systems and radio technologies mentioned above as well as for other systems and radio technologies. The following description describes a New Radio (NR) system for example purposes, and NR terminology is used in most of the following description, but these technologies can also be applied to applications other than NR system applications, such as 6th Generation (6G) communication systems.

[0047] Figure 1The block diagram of a wireless communication system applicable to the embodiment of the present application is shown. The wireless communication system includes a terminal 11 and a network side device 12. Among them, 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), a handheld computer, a netbook, an ultra-mobile personal computer (ultra-mobile personal computer, UMPC), a mobile Internet device (Mobile Internet Device, MID), a wearable device (Wearable Device) or a vehicle-mounted device (VUE), a pedestrian terminal (PUE) and other terminal-side devices. Wearable devices include: smart watches, bracelets, headphones, glasses, etc. It should be noted that the specific type of the terminal 11 is not limited in the embodiment of the present application. The network side device 12 can be a base station or a core network, where the base station can 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 set (Basic Service Set, BSS), an extended service set (Extended Service Set, ESS), a B node, an evolved B node (eNB), a home B node, a home evolved B node, a WLAN access point, a WiFi node, a transmitting and receiving point (Transmitting Receiving Point, TRP) or other appropriate terms in the field. As long as the same technical effect is achieved, the base station is not limited to a specific technical vocabulary. 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.

[0048] The following, in conjunction with the accompanying drawings, describes in detail the downlink control information sending and obtaining methods, devices, terminals, and network-side equipment provided in the embodiments of the present application through some embodiments and their application scenarios.

[0049] like Figure 2 As shown, an embodiment of the present application provides a method for sending downlink control information, including:

[0050] Step 201: The network side device configures a first initial bandwidth part BWP for the terminal;

[0051] It should be noted that the first initial BWP includes at least one of a first initial downlink BWP and a first initial uplink BWP.

[0052] It should be pointed out here that the first initial BWP refers to the initial BWP additionally configured for the terminal, which can be called an additional initial BWP, which is different from the existing initial BWP. For example, the additional initial BWP can be a separate initial BWP. Accordingly, the network side device can only configure a separate initial DL BWP for the terminal, or only configure a separate initial UL BWP for the terminal, or configure both a separate initial DL BWP and a separate initial UL BWP for the terminal.

[0053] Optionally, the first initial BWP may be at least one. For example, the network side device configures two first initial bandwidth parts for the terminal. For another example, the network side device may configure only one first initial bandwidth part for the terminal.

[0054] In the embodiments 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 specific capabilities or a specific type of terminal. In some embodiments, the terminal refers to a reduced capability (RedCap) terminal, such as a watch, a bracelet, or other device; in another embodiment, the terminal may be a non-RedCap terminal, such as a mobile phone or other device.

[0055] For a better understanding, please refer to the differences between reduced-capability terminals and non-reduced-capability terminals listed in Table 1 below.

[0056] Table 1. Comparison of terminal capabilities between non-RedCap terminals and RedCap terminals

[0057]

[0058] Table 1 shows that there are significant differences between reduced-capability terminals and non-reduced-capability terminals in terms of terminal capabilities, such as the number of receive antennas and maximum bandwidth. Terminals with different capabilities can use different initial bandwidth portions, thus avoiding congestion caused by using the same initial BWP for all terminals.

[0059] 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.

[0060] 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;

[0061] 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.

[0062] 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 a first downlink DCI and a 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 uplink DCI is used to schedule the physical uplink shared channel (PUSCH) on the first initial uplink BWP. Optionally, the first uplink DCI refers to a DCI with format 0-0.

[0063] It should be noted that the second initial BWP includes: at least one of a second initial downlink BWP and a second initial uplink BWP, and the second initial BWP refers to an existing initial BWP, which includes the existing initial downlink BWP and the existing initial uplink BWP. Furthermore, 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 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, and 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, and optionally, the second uplink DCI refers to a DCI with format 0-0.

[0064] In one embodiment, the terminal is a reduced-capability terminal, the first initial bandwidth portion is the initial bandwidth portion configured by the network-side device for the reduced-capability terminal, and the second initial bandwidth portion is the initial bandwidth portion configured by the network-side device for a non-reduced-capability terminal (that is, a normal terminal or a traditional terminal); for another example, the first initial bandwidth portion may be the initial bandwidth portion configured by the network-side device for a non-reduced-capability terminal, and the second initial bandwidth portion is the initial bandwidth portion configured by the network-side device for a reduced-capability terminal.

[0065] In an embodiment of the present application, when the network side device configures the first initial BWP for the terminal, the network side device performs a DCI length alignment operation on the target DCI sent on the common search space group, thereby ensuring that when at least one additional initial BWP is introduced, the UE and the network have a consistent understanding of the DCI size and do not increase the blind detection complexity of the UE for the DCI.

[0066] Specifically, the original length of the first downlink DCI before the DCI length alignment operation is determined by one of the following:

[0067] A11, any one of the first parameters;

[0068] It should be noted here that the first parameter includes the following items:

[0069] A21, bandwidth size of the first control resource set (CORESET) associated with the first initial downlink BWP;

[0070] It should be noted that, generally, the initial downlink BWP is associated with a CORESET numbered or indexed as 0 (i.e., CORESET#0). That is, the original length of the first downlink DCI before the DCI length alignment operation can be determined by the bandwidth size of CORESET#0 associated with the first initial downlink BWP. Specifically, the bandwidth size can refer to the number of resource blocks (RBs). The first initial downlink BWP being associated with the first CORESET means that the first CORESET is configured on the first initial downlink BWP.

[0071] A22, the bandwidth of the second CORESET associated with the second initial downlink BWP;

[0072] It should be noted that, generally, the initial downlink BWP is associated with the CORESET numbered or indexed as 0 (i.e., CORESET#0). That is, the original length of the first downlink DCI before the DCI length alignment operation can be determined by the bandwidth size of CORESET#0 associated with the second initial downlink BWP. Specifically, the bandwidth size can refer to the number of RBs. The second initial downlink BWP being associated with the second CORESET means that the second CORESET is configured on the second initial downlink BWP.

[0073] A23, the bandwidth of the first initial downlink BWP;

[0074] 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. Specifically, the bandwidth size may refer to the number of RBs.

[0075] A24, bandwidth size of the second initial downlink BWP;

[0076] 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. Specifically, the bandwidth size may refer to the number of RBs.

[0077] 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. The specific use of A21-A24 can be configured by the network side device or agreed upon by the protocol.

[0078] A12, the one with the largest value among the at least two items in the first parameter;

[0079] Specifically, if the network side device is able to obtain at least two items of A21-A24, the network side device can select the one 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 is able to obtain A21, A22 and A24, the network side device determines which one of A21, A22 and A24 indicates the largest bandwidth. If the bandwidth indicated by A22 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.

[0080] A13, the one with the smallest value among at least two items in the first parameter;

[0081] Specifically, if the network side device is able to obtain at least two items of A21-A24, the network side device can select the one 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 is able to obtain A21, A22 and A23, the network side device determines which one of A21, A22 and A23 indicates the smallest bandwidth. If the bandwidth indicated by A23 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.

[0082] Specifically, the original length of the first uplink DCI before the DCI length alignment operation is determined by one of the following:

[0083] B11, any one of the second parameters;

[0084] It should be noted here that the second parameter includes the following items:

[0085] B21, the bandwidth of the second initial uplink BWP;

[0086] 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. Specifically, the bandwidth size may refer to the number of RBs.

[0087] B22, the bandwidth of the first initial uplink BWP;

[0088] 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. Specifically, the bandwidth size may refer to the number of RBs.

[0089] 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 can be determined by the network side device or by protocol agreement.

[0090] B12, the one with the largest value among the second parameters;

[0091] Specifically, if the network side device is able to obtain B21 and B22, the network side device can select the one with the largest value between B21 and B22 (the largest value here refers to the largest 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 B22 is the largest, it is determined 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.

[0092] B13, the one with the smallest value among the second parameters;

[0093] Specifically, if the network side device is able to obtain B21 and B22, the network side device can select the one with the smallest value between B21 and B22 (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 the smallest, it is determined 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.

[0094] The following describes in detail the specific implementation of the embodiment of the present application from the perspective of the first initial BWP including different contents.

[0095] 1. The network-side device only configures the first initial downlink BWP for the terminal

[0096] That is, in this case, the first initial BWP only includes the first initial downlink BWP. Optionally, in this case, step 202 may be implemented as follows:

[0097] 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 mode;

[0098] Specifically, the first DCI alignment mode includes at least one of the following:

[0099] C11. The length of the first downlink DCI is aligned with the length of the second downlink DCI;

[0100] 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;

[0101] The alignment operation mentioned in the embodiments of the present application may be implemented as follows:

[0102] 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, such as by 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. For example, the MBS bits in the Frequency Domain Resource Allocation (FDRA) field in the first downlink DCI are truncated, i.e., the MBS bits in the FDRA field are deleted.

[0103] S2. If the length of the first downlink DCI is smaller than the length of the second downlink DCI, the first downlink DCI needs to be padded with 0s. Furthermore, an optional filling method is: padding with 0s at the end of all fields of the first downlink DCI until the length of the first downlink DCI is padded to be equal to the length of the second downlink DCI. Another optional filling method is: comparing each information field in the first downlink DCI and the second downlink DCI, padding with 0s for the information field. For example, if the length of information field A in the first downlink DCI is smaller than the length of the corresponding information field A in the second downlink DCI, padding with 0s is performed on information field A in the first downlink DCI (usually padding with 0s at the end of information field A) to ensure that the length of 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.

[0104] It should be noted that the principles of the implementation of the alignment operation mentioned here are applicable to the alignment operation used below, and will not be explained in detail in the following description.

[0105] Optionally, the network side device may align the length of the first downlink DCI with the length of the second downlink DCI when the terminal is able to switch between the first initial downlink BWP and the second initial downlink BWP; that is, the premise for aligning the length of the first downlink DCI with the length of the second downlink DCI is that the terminal is able to switch between the first initial downlink BWP and the second initial downlink BWP, that is, the terminal applying the first initial downlink BWP will still switch back to the second initial downlink BWP.

[0106] C12. The length of the second uplink DCI is aligned with the length of the first downlink DCI;

[0107] 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.

[0108] 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 switch between the first initial downlink BWP and the second initial downlink BWP. That is, the premise for aligning the length of the second uplink DCI with 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, the terminal applying the first initial downlink BWP will not switch back to the second initial downlink BWP.

[0109] 2. The network side device only configures the first initial uplink BWP for the terminal

[0110] That is, in this case, the first initial BWP only includes the first initial uplink BWP. Optionally, in this case, step 202 may be implemented as follows:

[0111] 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 mode;

[0112] The second DCI alignment mode includes at least one of the following:

[0113] C21. The length of the first uplink DCI is aligned with the length of the second downlink DCI.

[0114] 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;

[0115] C22. The length of the first uplink DCI is aligned with the length of the second uplink DCI;

[0116] 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;

[0117] Optionally, the network side device may align the length of the first uplink DCI with the length of the second uplink DCI when the terminal is able to switch between the first initial uplink BWP and the second initial uplink BWP; that is, the premise for aligning the length of the first uplink DCI with the length of the second uplink DCI is that the terminal is able to switch between the first initial uplink BWP and the second initial uplink BWP, that is, the terminal applying the first initial uplink BWP will still switch back to the second initial uplink BWP.

[0118] 3. The network side device configures the first initial downlink BWP and the first initial uplink BWP for the terminal

[0119] That is, in this case, the first initial BWP includes a first initial downlink BWP and a first initial uplink BWP. Optionally, in this case, step 202 may be implemented as follows:

[0120] 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 mode;

[0121] The third DCI alignment mode includes at least one of the following:

[0122] C31. The length of the first uplink DCI is aligned with the length of the first downlink DCI;

[0123] 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;

[0124] Optionally, the network side device may align the length of the first uplink DCI with the 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 premise for aligning the length of the first uplink DCI with 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, the terminal applying the first initial downlink BWP will not switch back to the second initial downlink BWP.

[0125] Optionally, the network side device may align the length of the first uplink DCI with the length of the first downlink DCI when the terminal cannot switch between the first initial downlink BWP and the second initial downlink BWP and between the first initial uplink BWP and the second initial uplink BWP; that is, the premise for aligning the length of the first uplink DCI with the length of the first downlink DCI is that the terminal cannot switch 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 will not switch back to the second initial BWP.

[0126] C32. The length of the first uplink DCI is aligned with the length of the second downlink DCI;

[0127] 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;

[0128] Optionally, the network side device may align the length of the first uplink DCI with the length of the second downlink DCI when the terminal is able to switch between the first initial downlink BWP and the second initial downlink BWP; that is, the premise for aligning the length of the first uplink DCI with the length of the second downlink DCI is that the terminal is able to switch between the first initial downlink BWP and the second initial downlink BWP, that is, the terminal applying the first initial downlink BWP will still switch back to the second initial downlink BWP.

[0129] C33: The length of the first uplink DCI is aligned with the length of the second uplink DCI;

[0130] 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;

[0131] Optionally, the network side device may align the length of the first uplink DCI with the length of the second uplink DCI when the terminal is able to switch between the first initial uplink BWP and the second initial uplink BWP; that is, the premise for aligning the length of the first uplink DCI with the length of the second uplink DCI is that the terminal is able to switch between the first initial uplink BWP and the second initial uplink BWP, that is, applying the first initial uplink BWP will still switch back to the second initial uplink BWP.

[0132] C34. The length of the first downlink DCI is aligned with the length of the second downlink DCI;

[0133] 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;

[0134] Optionally, the network side device may align the length of the first downlink DCI with the length of the second downlink DCI when the terminal is able to switch between the first initial downlink BWP and the second initial downlink BWP; that is, the premise for aligning the length of the first downlink DCI with the length of the second downlink DCI is that the terminal is able to switch between the first initial downlink BWP and the second initial downlink BWP, that is, the terminal applying the first initial downlink BWP will still switch back to the second initial downlink BWP.

[0135] C35, the first downlink DCI maintains the original length;

[0136] In this manner, the network side device does not perform DCI length alignment on the length of the first downlink DCI.

[0137] Optionally, the network side device may maintain the original length of the first downlink DCI when the terminal is unable to switch between the first initial downlink BWP and the second initial downlink BWP; that is, the premise for the first downlink DCI to maintain the original length is that the terminal is unable to switch 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.

[0138] It should be noted that, in this case, the network side device performs the alignment operations of the first uplink DCI and the first downlink DCI separately. That is to say, for the first uplink DCI, the network side device will select one of C31-C33 for execution, and for the first downlink DCI, the network side device will select one of C34 and -C35 for execution.

[0139] 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.

[0140] The following takes the case where the first initial downlink BWP is a separate initial DL BWP and the first initial uplink BWP is a separate initial UL BWP as an example to illustrate the above cases.

[0141] Actual application scenario 1: The network side equipment is configured with separate initial DL BWP and separate initial UL BWP

[0142] The network-side device configures CORESET 0 on the separate initial DL BWP, and the CSS is associated with CORESET 0. The CSS type includes at least one of type 0, type 0A, type 1, and type 2.

[0143] The terminal detects the first downlink DCI and the first uplink DCI in the search space configured on the separate initial DL BWP; the first downlink DCI schedules the PDSCH on the separate initial DL BWP; the first uplink DCI schedules the PUSCH on the separate initial UL BWP.

[0144] Optionally, when a terminal (eg, redcap UE) applying a separate initial DL BWP does not switch back to the existing initial DL BWP, the following alignment scheme is adopted:

[0145] S11: The first downlink DCI maintains its original length and is not aligned with any DCI.

[0146] S12. The length of the first uplink DCI is aligned with the length of the first downlink DCI.

[0147] Optionally, in the case where a terminal (e.g., redcap UE) applying a separate initial DL BWP still switches back to the existing initial DL BWP, the following alignment scheme is adopted:

[0148] S21. Align the length of the first downlink DCI with the length of the second downlink DCI;

[0149] S22. The length of the first uplink DCI is aligned with the length of the second uplink DCI, and then, according to the existing protocol, the length of the second uplink DCI is further aligned with the length of the second downlink DCI; or

[0150] The length of the first uplink DCI is aligned with 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). Alternatively, the length of the first uplink DCI is aligned with the length of the second downlink DCI (using this branch means that the first uplink DCI is directly aligned with the second downlink DCI).

[0151] Actual application scenario 2: The network side device is only configured with separate initial DL BWP

[0152] The network-side device configures CORESET 0 on the separate initial DL BWP, and the CSS is associated with CORESET 0. The CSS type includes at least one of type 0, type 0A, type 1, and type 2.

[0153] 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 and the second uplink DCI schedules the PUSCH on the existing initial UL BWP.

[0154] Optionally, when a terminal (eg, redcap UE) applying a separate initial DL BWP does not switch back to the existing initial DL BWP, the following alignment scheme is adopted:

[0155] S31. Align the length of the first downlink DCI with the length of the second downlink DCI;

[0156] S32. The length of the second uplink DCI is aligned with the length of the first downlink DCI.

[0157] Optionally, in the case where a terminal (e.g., redcap UE) applying a separate initial DL BWP still switches back to the existing initial DL BWP, the following alignment scheme is adopted:

[0158] The length of the first downlink DCI is aligned with the length of the second downlink DCI.

[0159] Actual application scenario 3: The network-side device is only configured with separate initial UL BWP

[0160] 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; wherein the first uplink DCI schedules the PUSCH on the separate initial UL BWP.

[0161] Any of the following alignment schemes can be used:

[0162] S41. Align the length of the first uplink DCI with the length of the second downlink DCI.

[0163] S42. Align the length of the first uplink DCI with the length of the second uplink DCI;

[0164] Furthermore, in this case, according to the existing protocol, the length of the second uplink DCI continues to be aligned with the length of the second downlink DCI.

[0165] It should be noted that the embodiment of the present application proposes a method for aligning the size of the fallback DCI (i.e., DCI 0-0 and 1-0) carried in the CSS under the premise of introducing at least one additional initial BWP, which can avoid increasing the blind detection complexity of the terminal and ensure that the terminal and the network have a consistent understanding of the DCI size.

[0166] like Figure 3 As shown, the embodiment of the present application further provides a downlink control information sending device 300, including:

[0167] The configuration module 301 is configured to configure a first initial bandwidth part BWP for the terminal;

[0168] The processing module 302 is configured to perform a DCI length alignment operation on target downlink control information DCI sent on a common search space group;

[0169] A sending module 303 is configured to send the target DCI after the DCI length alignment operation to the terminal on the common search space group;

[0170] 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 time-frequency resources on the second initial BWP. The first type of DCI includes at least one of a first downlink DCI and a first uplink DCI, and the second type of DCI includes at least one of a second downlink DCI and a second 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.

[0171] Optionally, the original length of the first downlink DCI before the DCI length alignment operation is determined by one of the following:

[0172] Any of the first parameters;

[0173] The one with the largest value among the at least two items in the first parameter;

[0174] The one with the smallest value among at least two items of the first parameter;

[0175] The first parameter includes:

[0176] The bandwidth size of the first control resource set CORESET associated with the first initial downlink BWP;

[0177] The bandwidth size of the second control resource set CORESET associated with the second initial downlink BWP;

[0178] The bandwidth of the first initial downlink BWP;

[0179] The bandwidth size of the second initial downlink BWP.

[0180] Optionally, the original length of the first uplink DCI before the DCI length alignment operation is determined by one of the following:

[0181] Any of the second parameters;

[0182] The one with the largest value among the second parameters;

[0183] The one with the smallest value among the second parameters;

[0184] The second parameter includes:

[0185] The bandwidth of the second initial uplink BWP;

[0186] The bandwidth size of the first initial uplink BWP.

[0187] Optionally, the processing module 302 is configured to:

[0188] In a case where the first initial BWP includes a 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 a first DCI alignment mode;

[0189] The first DCI alignment mode includes at least one of the following:

[0190] The length of the first downlink DCI is aligned with the length of the second downlink DCI;

[0191] The length of the second uplink DCI is aligned with the length of the first downlink DCI.

[0192] Optionally, an implementation method for aligning the length of the second uplink DCI with the length of the first downlink DCI includes:

[0193] In a case where 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 with the length of the first downlink DCI.

[0194] Optionally, an implementation method for aligning the length of the first downlink DCI with the length of the second downlink DCI includes:

[0195] 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 with the length of the second downlink DCI.

[0196] Optionally, the processing module 302 is configured to:

[0197] In a case where the first initial BWP includes a 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 a second DCI alignment mode;

[0198] The second DCI alignment mode includes at least one of the following:

[0199] The length of the first uplink DCI is aligned with the length of the second downlink DCI;

[0200] The length of the first uplink DCI is aligned with the length of the second uplink DCI.

[0201] Optionally, an implementation method for aligning the length of the first uplink DCI with the length of the second uplink DCI includes:

[0202] 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 with the length of the second uplink DCI.

[0203] Optionally, the processing module 302 is configured to:

[0204] In a case where 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 the target DCI sent on the common search space group according to a third DCI alignment mode;

[0205] The third DCI alignment mode includes at least one of the following:

[0206] The length of the first downlink DCI is aligned with the length of the second downlink DCI;

[0207] The length of the first uplink DCI is aligned with the length of the first downlink DCI;

[0208] The length of the first uplink DCI is aligned with the length of the second downlink DCI;

[0209] The length of the first uplink DCI is aligned with the length of the second uplink DCI;

[0210] The first downlink DCI maintains its original length.

[0211] Optionally, an implementation method for aligning the length of the first uplink DCI with the length of the first downlink DCI includes:

[0212] In the case where the terminal cannot switch between the first initial downlink BWP and the second initial downlink BWP, or in the case where the terminal cannot switch between the first initial downlink BWP and the second initial downlink BWP and between the first initial uplink BWP and the second initial uplink BWP, the length of the first uplink DCI is aligned with the length of the first downlink DCI.

[0213] Optionally, an implementation method for aligning the length of the first uplink DCI with the length of the second uplink DCI includes:

[0214] 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 with the length of the second uplink DCI.

[0215] Optionally, an implementation method for aligning the length of the first uplink DCI with the length of the second downlink DCI includes:

[0216] 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 with the length of the second downlink DCI.

[0217] Optionally, a manner of implementing the first downlink DCI maintaining the original length includes:

[0218] In a case where the terminal cannot perform switching between the first initial downlink BWP and the second initial downlink BWP, the first downlink DCI maintains the original length.

[0219] Optionally, an implementation method for aligning the length of the first downlink DCI with the length of the second downlink DCI includes:

[0220] 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 with the length of the second downlink DCI.

[0221] It should be noted that, when the network side device of the embodiment of the present application configures the first initial BWP for the terminal, it first performs a DCI length alignment operation on the target DCI sent on the common search space group, and then performs the target DCI after the DCI length alignment operation, so as to ensure that when at least one additional initial BWP is introduced, the UE and the network have a consistent understanding of the DCI size and reduce the blind detection complexity of the UE.

[0222] Preferably, an 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 runnable on the processor. When the program or instruction is executed by the processor, the various processes of the embodiment of the downlink control information sending method applied to the network side device side are implemented, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0223] An embodiment of the present application also provides a computer-readable storage medium, on which a program or instruction is stored. When the program or instruction is executed by a processor, the various processes of the embodiment of the downlink control information sending method applied to the network side device side are implemented, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0224] The computer-readable storage medium may be a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0225] An embodiment of the present application further provides a network-side device, including a processor and a communication interface, wherein the processor is configured to configure a first initial bandwidth part (BWP) for a terminal; perform a DCI length alignment operation on 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 to the terminal on the common search space group.

[0226] 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 time-frequency resources on the second initial BWP. The first type of DCI includes at least one of a first downlink DCI and a first uplink DCI, and the second type of DCI includes at least one of a second downlink DCI and a second 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.

[0227] This network side device embodiment corresponds to the above-mentioned network side device method embodiment. The various implementation processes and implementation methods of the above-mentioned method embodiment are applicable to this network side device embodiment and can achieve the same technical effects.

[0228] Specifically, the embodiment of the present application also provides a network side device. Figure 4As shown, network-side device 400 includes an antenna 401, a radio frequency device 402, and a baseband device 403. Antenna 401 is connected to radio frequency device 402. In the uplink direction, radio frequency device 402 receives information via antenna 41 and sends the received information to baseband device 403 for processing. In the downlink direction, baseband device 403 processes the information to be transmitted and sends it to radio frequency device 402. Radio frequency device 402 processes the received information and then sends it through antenna 401.

[0229] The frequency band processing device may be located in the baseband device 403 . The method performed by the network-side device in the above embodiment may be implemented in the baseband device 403 . The baseband device 403 includes a processor 404 and a memory 405 .

[0230] The baseband device 403 may include, for example, at least one baseband board, on which a plurality of chips are arranged, such as Figure 4 As shown, one of the chips is, for example, a processor 404, which is connected to a memory 405 to call a program in the memory 405 and execute the network-side device operations shown in the above method embodiment.

[0231] The baseband device 403 may further include a network interface 406 for exchanging information with the radio frequency device 402 . The interface may be, for example, a common public radio interface (CPRI).

[0232] Specifically, the network side device of the embodiment of the present invention further 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 Figure 3 The methods executed by the modules shown achieve the same technical effects, so they will not be described here to avoid repetition.

[0233] Corresponding to the transmission of the network side equipment, such as Figure 5 As shown, an embodiment of the present application provides a method for obtaining downlink control information, which is applied to a terminal configured with a first initial bandwidth part BWP, including:

[0234] Step 501: The terminal detects target downlink control information DCI in a common search space group;

[0235] The target DCI is sent by the network side device after performing a DCI length alignment operation;

[0236] 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, the second type of DCI is used to schedule time-frequency resources on the second initial BWP, the first type of DCI includes at least one of a first downlink DCI and a first uplink DCI, and the second type of DCI includes at least one of a second downlink DCI and a second uplink DCI;

[0237] 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.

[0238] Optionally, the original length of the first downlink DCI before the DCI length alignment operation is determined by one of the following:

[0239] Any of the first parameters;

[0240] The one with the largest value among the at least two items in the first parameter;

[0241] The one with the smallest value among at least two items in the first parameter;

[0242] The first parameter includes:

[0243] The bandwidth size of the first control resource set CORESET associated with the first initial downlink BWP;

[0244] The bandwidth size of the second control resource set CORESET associated with the second initial downlink BWP;

[0245] The bandwidth of the first initial downlink BWP;

[0246] The bandwidth size of the second initial downlink BWP.

[0247] Optionally, the original length of the first uplink DCI before the DCI length alignment operation is determined by one of the following:

[0248] Any of the second parameters;

[0249] The one with the largest value among the second parameters;

[0250] The one with the smallest value among the second parameters;

[0251] The second parameter includes:

[0252] The bandwidth size of the second initial uplink BWP;

[0253] The bandwidth size of the first initial uplink BWP.

[0254] Optionally, the method further includes:

[0255] In a case where the first initial BWP includes a first initial downlink BWP, the terminal parses a target DCI on a common search space group according to a first DCI alignment mode;

[0256] The first DCI alignment mode includes at least one of the following:

[0257] The length of the first downlink DCI is aligned with the length of the second downlink DCI;

[0258] The length of the second uplink DCI is aligned with the length of the first downlink DCI.

[0259] Optionally, an implementation method for aligning the length of the second uplink DCI with the length of the first downlink DCI includes:

[0260] In a case where 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 with the length of the first downlink DCI.

[0261] Optionally, an implementation method for aligning the length of the first downlink DCI with the length of the second downlink DCI includes:

[0262] 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 with the length of the second downlink DCI.

[0263] Optionally, the method further includes:

[0264] In a case where the first initial BWP includes a first initial uplink BWP, the terminal parses a target DCI on a common search space group according to a second DCI alignment mode;

[0265] The second DCI alignment mode includes at least one of the following:

[0266] The length of the first uplink DCI is aligned with the length of the second downlink DCI;

[0267] The length of the first uplink DCI is aligned with the length of the second uplink DCI.

[0268] Optionally, an implementation method for aligning the length of the first uplink DCI with the length of the second uplink DCI includes:

[0269] 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 with the length of the second uplink DCI.

[0270] Optionally, the method further includes:

[0271] In a case where the first initial BWP includes a first initial downlink BWP and a first initial uplink BWP, the terminal parses the target DCI on the common search space group according to a third DCI alignment mode;

[0272] The third DCI alignment mode includes at least one of the following:

[0273] The length of the first downlink DCI is aligned with the length of the second downlink DCI;

[0274] The length of the first uplink DCI is aligned with the length of the first downlink DCI;

[0275] The length of the first uplink DCI is aligned with the length of the second downlink DCI;

[0276] The length of the first uplink DCI is aligned with the length of the second uplink DCI;

[0277] The first downlink DCI maintains its original length.

[0278] Optionally, an implementation method for aligning the length of the first uplink DCI with the length of the first downlink DCI includes:

[0279] In the case where the terminal cannot switch between the first initial downlink BWP and the second initial downlink BWP, or in the case where the terminal cannot switch between the first initial downlink BWP and the second initial downlink BWP and between the first initial uplink BWP and the second initial uplink BWP, the length of the first uplink DCI is aligned with the length of the first downlink DCI.

[0280] Optionally, an implementation method for aligning the length of the first uplink DCI with the length of the second uplink DCI includes:

[0281] 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 with the length of the second uplink DCI.

[0282] Optionally, an implementation method for aligning the length of the first uplink DCI with the length of the second downlink DCI includes:

[0283] 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 with the length of the second downlink DCI.

[0284] Optionally, a manner of implementing the first downlink DCI maintaining the original length includes:

[0285] In a case where the terminal cannot perform switching between the first initial downlink BWP and the second initial downlink BWP, the first downlink DCI maintains the original length.

[0286] Optionally, an implementation method for aligning the length of the first downlink DCI with the length of the second downlink DCI includes:

[0287] 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 with the length of the second downlink DCI.

[0288] It should be noted that the terminal parses the DCI in the same manner as the network side device sends the DCI. That is to say, all the implementation methods in the above embodiments are applicable to this embodiment and can achieve the same technical effect.

[0289] It should be noted that the downlink control information acquisition method provided in the embodiments of the present application can be executed by a downlink control information acquisition device, or a control module in the downlink control information acquisition device for executing the downlink control information acquisition method. The embodiments of the present application take the downlink control information acquisition device executing the downlink control information acquisition method as an example to illustrate the downlink control information acquisition device provided in the embodiments of the present application.

[0290] like Figure 6 As shown, an 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:

[0291] A detection module 601 is configured to detect target downlink control information DCI on a common search space group;

[0292] The target DCI is sent by the network side device after performing a DCI length alignment operation;

[0293] The DCI length alignment operation includes an alignment operation on 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, the second type of DCI is used to schedule time-frequency resources on the second initial BWP, the first type of DCI includes at least one of a first downlink DCI and a first uplink DCI, and the second type of DCI includes at least one of a second downlink DCI and a second uplink DCI;

[0294] 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.

[0295] Optionally, the original length of the first downlink DCI before the DCI length alignment operation is determined by one of the following:

[0296] Any of the first parameters;

[0297] The one with the largest value among the at least two items in the first parameter;

[0298] The one with the smallest value among at least two items in the first parameter;

[0299] The first parameter includes:

[0300] The bandwidth size of the first control resource set CORESET associated with the first initial downlink BWP;

[0301] The bandwidth size of the second control resource set CORESET associated with the second initial downlink BWP;

[0302] The bandwidth of the first initial downlink BWP;

[0303] The bandwidth size of the second initial downlink BWP.

[0304] Optionally, the original length of the first uplink DCI before the DCI length alignment operation is determined by one of the following:

[0305] Any of the second parameters;

[0306] The one with the largest value among the second parameters;

[0307] The one with the smallest value among the second parameters;

[0308] The second parameter includes:

[0309] The bandwidth size of the second initial uplink BWP;

[0310] The bandwidth size of the first initial uplink BWP.

[0311] Optionally, the device further includes:

[0312] A first parsing module is configured to parse, by the terminal, a target DCI on a common search space group according to a first DCI alignment mode when the first initial BWP includes a first initial downlink BWP;

[0313] The first DCI alignment mode includes at least one of the following:

[0314] The length of the first downlink DCI is aligned with the length of the second downlink DCI;

[0315] The length of the second uplink DCI is aligned with the length of the first downlink DCI.

[0316] Optionally, an implementation method for aligning the length of the second uplink DCI with the length of the first downlink DCI includes:

[0317] In a case where 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 with the length of the first downlink DCI.

[0318] Optionally, an implementation method for aligning the length of the first downlink DCI with the length of the second downlink DCI includes:

[0319] 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 with the length of the second downlink DCI.

[0320] Optionally, the device further includes:

[0321] A second parsing module is configured to parse, by the terminal, a target DCI on the common search space group according to a second DCI alignment mode when the first initial BWP includes a first initial uplink BWP;

[0322] The second DCI alignment mode includes at least one of the following:

[0323] The length of the first uplink DCI is aligned with the length of the second downlink DCI;

[0324] The length of the first uplink DCI is aligned with the length of the second uplink DCI.

[0325] Optionally, an implementation method for aligning the length of the first uplink DCI with the length of the second uplink DCI includes:

[0326] 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 with the length of the second uplink DCI.

[0327] Optionally, the device further includes:

[0328] A third parsing module is configured to parse, by the terminal, a target DCI on the common search space group according to a third DCI alignment mode when the first initial BWP includes a first initial downlink BWP and a first initial uplink BWP;

[0329] The third DCI alignment mode includes at least one of the following:

[0330] The length of the first downlink DCI is aligned with the length of the second downlink DCI;

[0331] The length of the first uplink DCI is aligned with the length of the first downlink DCI;

[0332] The length of the first uplink DCI is aligned with the length of the second downlink DCI;

[0333] The length of the first uplink DCI is aligned with the length of the second uplink DCI;

[0334] The first downlink DCI maintains its original length.

[0335] Optionally, an implementation method for aligning the length of the first uplink DCI with the length of the first downlink DCI includes:

[0336] In the case where the terminal cannot switch between the first initial downlink BWP and the second initial downlink BWP, or in the case where the terminal cannot switch between the first initial downlink BWP and the second initial downlink BWP and between the first initial uplink BWP and the second initial uplink BWP, the length of the first uplink DCI is aligned with the length of the first downlink DCI.

[0337] Optionally, an implementation method for aligning the length of the first uplink DCI with the length of the second uplink DCI includes:

[0338] 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 with the length of the second uplink DCI.

[0339] Optionally, an implementation method for aligning the length of the first uplink DCI with the length of the second downlink DCI includes:

[0340] 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 with the length of the second downlink DCI.

[0341] Optionally, a manner of implementing the first downlink DCI maintaining the original length includes:

[0342] In a case where the terminal cannot perform switching between the first initial downlink BWP and the second initial downlink BWP, the first downlink DCI maintains the original length.

[0343] Optionally, an implementation method for aligning the length of the first downlink DCI with the length of the second downlink DCI includes:

[0344] 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 with the length of the second downlink DCI.

[0345] The downlink control information acquisition device in the embodiments of the present application can be a device, a device or electronic device with an operating system, or a component, integrated circuit, or chip in a terminal. The device or electronic device can be a mobile terminal or a non-mobile terminal. For example, mobile terminals can include, but are not limited to, the types of terminals 11 listed above, and non-mobile terminals can include servers, network attached storage (NAS), personal computers (PCs), televisions (TVs), ATMs, or self-service machines, etc., and the embodiments of the present application do not specifically limit this.

[0346] The downlink control information acquisition device provided in the embodiment of the present application can achieve Figure 5 The various processes implemented by the method embodiment achieve the same technical effect and are not described here again to avoid repetition.

[0347] An embodiment of the present application further provides a terminal, which is configured with a first initial bandwidth part BWP, and includes a processor and a communication interface, wherein the processor is configured to detect target downlink control information DCI on a common search space group;

[0348] The target DCI is sent by the network side device after performing a DCI length alignment operation;

[0349] The DCI length alignment operation includes an alignment operation on 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, the second type of DCI is used to schedule time-frequency resources on the second initial BWP, the first type of DCI includes at least one of a first downlink DCI and a first uplink DCI, and the second type of DCI includes at least one of a second downlink DCI and a second uplink DCI;

[0350] 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.

[0351] This terminal embodiment corresponds to the above-mentioned terminal side method embodiment. The various implementation processes and implementation methods of the above-mentioned method embodiment are applicable to this terminal embodiment and can achieve the same technical effects. Specifically, Figure 7A schematic diagram of the hardware structure of a terminal for implementing an embodiment of the present application.

[0352] 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, and at least some of the components of the processor 710.

[0353] Those skilled in the art will understand that the terminal 700 may also include a power supply (such as a battery) to power each component, and the power supply may be logically connected to the processor 710 through a power management system, thereby implementing functions such as charging, discharging, and power consumption management through the power management system. Figure 7 The terminal structure shown in the figure does not constitute a limitation on the terminal. The terminal may include more or fewer components than shown in the figure, or combine certain components, or arrange the components differently, which will not be repeated here.

[0354] It should be understood that in an 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 the image data of a static picture or video obtained by an image capture device (such as a camera) in a video capture mode or an image capture 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, etc. 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, a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a trackball, a mouse, and an operating stick, which will not be repeated here.

[0355] In this embodiment of the present application, the radio frequency unit 701 receives downlink data from the network-side device and transmits it to the processor 710 for processing. Furthermore, the radio frequency unit 701 transmits uplink data to the network-side device. Typically, 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.

[0356] The memory 709 can be used to store software programs or instructions and 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, at least one application program or instruction required for a function (such as a sound playback function, an image playback function, etc.). In addition, the memory 709 may include a high-speed random access memory and may also include a non-volatile memory, wherein the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. For example, at least one disk storage device, a flash memory device, or other non-volatile solid-state storage device.

[0357] Processor 710 may include one or more processing units. Optionally, processor 710 may integrate an application processor and a modem processor. The application processor primarily processes the operating system, user interface, and application programs or instructions, while the modem processor primarily processes wireless communications, such as a baseband processor. It is understood that the modem processor may not be integrated into processor 710.

[0358] The processor 710 is configured to implement:

[0359] Detecting target downlink control information DCI on the common search space group;

[0360] The target DCI is sent after the network side device performs a DCI length alignment operation;

[0361] The DCI length alignment operation includes an alignment operation on 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, the second type of DCI is used to schedule time-frequency resources on the second initial BWP, the first type of DCI includes at least one of a first downlink DCI and a first uplink DCI, and the second type of DCI includes at least one of a second downlink DCI and a second uplink DCI;

[0362] 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.

[0363] Optionally, the original length of the first downlink DCI before the DCI length alignment operation is determined by one of the following:

[0364] Any of the first parameters;

[0365] The one with the largest value among the at least two items in the first parameter;

[0366] The one with the smallest value among at least two items of the first parameter;

[0367] The first parameter includes:

[0368] The bandwidth size of the first control resource set CORESET associated with the first initial downlink BWP;

[0369] The bandwidth size of the second control resource set CORESET associated with the second initial downlink BWP;

[0370] The bandwidth of the first initial downlink BWP;

[0371] The bandwidth size of the second initial downlink BWP.

[0372] Optionally, the original length of the first uplink DCI before the DCI length alignment operation is determined by one of the following:

[0373] Any of the second parameters;

[0374] The one with the largest value among the second parameters;

[0375] The one with the smallest value among the second parameters;

[0376] The second parameter includes:

[0377] The bandwidth size of the second initial uplink BWP;

[0378] The bandwidth size of the first initial uplink BWP.

[0379] Optionally, the processor 710 is further configured to implement:

[0380] In a case where the first initial BWP includes a first initial downlink BWP, the terminal parses a target DCI on a common search space group according to a first DCI alignment mode;

[0381] The first DCI alignment mode includes at least one of the following:

[0382] The length of the first downlink DCI is aligned with the length of the second downlink DCI;

[0383] The length of the second uplink DCI is aligned with the length of the first downlink DCI.

[0384] Optionally, the processor 710 is configured to implement:

[0385] In a case where 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 with the length of the first downlink DCI.

[0386] Optionally, the processor 710 is configured to implement:

[0387] 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 with the length of the second downlink DCI.

[0388] Optionally, the processor 710 is further configured to implement:

[0389] In a case where the first initial BWP includes a first initial uplink BWP, the terminal parses a target DCI on a common search space group according to a second DCI alignment mode;

[0390] The second DCI alignment mode includes at least one of the following:

[0391] The length of the first uplink DCI is aligned with the length of the second downlink DCI;

[0392] The length of the first uplink DCI is aligned with the length of the second uplink DCI.

[0393] Optionally, the processor 710 is configured to implement:

[0394] 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 with the length of the second uplink DCI.

[0395] Optionally, the processor 710 is further configured to implement:

[0396] In a case where the first initial BWP includes a first initial downlink BWP and a first initial uplink BWP, the terminal parses the target DCI on the common search space group according to a third DCI alignment mode;

[0397] The third DCI alignment mode includes at least one of the following:

[0398] The length of the first downlink DCI is aligned with the length of the second downlink DCI;

[0399] The length of the first uplink DCI is aligned with the length of the first downlink DCI;

[0400] The length of the first uplink DCI is aligned with the length of the second downlink DCI;

[0401] The length of the first uplink DCI is aligned with the length of the second uplink DCI;

[0402] The first downlink DCI maintains its original length.

[0403] Optionally, the processor 710 is configured to implement:

[0404] In a case where 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 with the length of the first downlink DCI.

[0405] Optionally, the processor 710 is configured to implement:

[0406] 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 with the length of the second uplink DCI.

[0407] Optionally, the processor 710 is configured to implement:

[0408] 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 with the length of the second downlink DCI.

[0409] Optionally, the processor 710 is configured to implement:

[0410] In a case where the terminal cannot perform switching between the first initial downlink BWP and the second initial downlink BWP, the first downlink DCI maintains the original length.

[0411] Optionally, the processor 710 is configured to implement:

[0412] 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 with the length of the second downlink DCI.

[0413] Preferably, an embodiment of the present application also provides a terminal, including a processor, a memory, and a program or instruction stored in the memory and executable on the processor. When the program or instruction is executed by the processor, the various processes of the embodiment of the downlink control information acquisition method are implemented, and the same technical effect can be achieved. To avoid repetition, it will not be described here.

[0414] The present application also provides a computer-readable storage medium having a program or instruction stored thereon. When the program or instruction is executed by a processor, the various processes of the embodiment of the method for obtaining downlink control information are implemented, and the same technical effects are achieved. To avoid repetition, the details are not described here. The computer-readable storage medium is, for example, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0415] Optional, such as Figure 8 As shown, an embodiment of the present application further provides a communication device 800, including a processor 801, a memory 802, and a program or instruction stored in the memory 802 and executable on the processor 801. For example, when the communication device 800 is a terminal, the program or instruction, when executed by the processor 801, implements the various processes of the above-mentioned embodiment of the method for acquiring downlink control information, and can achieve the same technical effect. When the communication device 800 is a network-side device, the program or instruction, when executed by the processor 801, implements the various processes of the above-mentioned embodiment of the method for sending downlink control information, and can achieve the same technical effect. To avoid repetition, they are not described here.

[0416] The terminal involved in the embodiments of the present application may be a device that provides voice and / or data connectivity to a user, a handheld device with wireless connection function, or other processing devices connected to a wireless modem. In different systems, the name of the terminal device may also be different. For example, in a 5G system, the terminal device may be called a user equipment (UE). A wireless terminal device can communicate with one or more core networks (CN) via a radio access network (RAN). The wireless terminal device may be a mobile terminal device, such as a mobile phone (or "cellular" phone) and a computer with a mobile terminal device. For example, it may be a portable, pocket-sized, handheld, computer-built-in or vehicle-mounted mobile device that exchanges language and / or data with a radio access network. For example, personal communication service (PCS) phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistants (PDAs), and other devices. The wireless terminal device may also be referred to as a system, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, an access point, a remote terminal device, an access terminal device, a user terminal device, a user agent, or a user device, but is not limited in the embodiments of the present application.

[0417] The network side device involved in the embodiments of the present application can be a base station (Base Transceiver Station, BTS) in Global System of Mobile communication (GSM) or Code Division Multiple Access (CDMA), or 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 a base station in a future 5G network, etc., and is not limited here.

[0418] Network devices and terminals can each use one or more antennas for Multiple Input Multiple Output (MIMO) transmission. MIMO transmission can be either Single User MIMO (SU-MIMO) or Multi User MIMO (MU-MIMO). Depending on the configuration and number of antenna combinations, MIMO transmission can be 2D-MIMO, 3D-MIMO, FD-MIMO, or Massive-MIMO. It can also use diversity transmission, precoding, or beamforming.

[0419] An embodiment of the present application further provides a chip, which includes a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the various processes of the above-mentioned downlink control information sending method or downlink control information acquisition method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0420] It should be understood that the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.

[0421] It should be noted that, in this article, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the statement "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element. In addition, it should be noted 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 the opposite order according to the functions involved. For example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0422] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus the necessary general hardware platform, and of course can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, can 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 a number of instructions for enabling a terminal (which can be a mobile phone, computer, server, air conditioner, or network device, etc.) to execute the methods described in each embodiment of the present application.

[0423] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of this application, ordinary technicians in this field can also make many forms without departing from the purpose of this application and the scope of protection of the claims, all of which are within the protection of this application.

Claims

1. A method for sending downlink control information, characterized in that: include: The network side device configures a 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; 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, the second type of DCI is used to schedule time-frequency resources on the second initial BWP, the first type of DCI includes at least one of a first downlink DCI and a first uplink DCI, and the second type of DCI includes at least one of a second downlink DCI and a second 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 terminal is a reduced-capability terminal, the first initial BWP is the initial BWP configured by the network side device for the reduced-capability terminal, and the second initial BWP is the initial BWP configured by the network side device for the non-reduced-capability terminal.

2. The method according to claim 1, characterized in that 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 one with the largest value among the at least two items in the first parameter; The one with the smallest value among at least two items in the first parameter; The first parameter includes: 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 of the first initial downlink BWP; The bandwidth size of the second initial downlink BWP.

3. The method according to claim 1, characterized in that 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 one with the largest value among the second parameters; The one with the smallest value among the second parameters; The second parameter includes: The bandwidth of the second initial uplink BWP; The bandwidth size of the first initial uplink BWP.

4. The method according to any one of claims 1 to 3, characterized in that The network side device performs a DCI length alignment operation on a target DCI sent on a common search space group, including: In a case where the first initial BWP includes a 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 a first DCI alignment mode; The first DCI alignment mode includes at least one of the following: The length of the first downlink DCI is aligned with the length of the second downlink DCI; The length of the second uplink DCI is aligned with the length of the first downlink DCI.

5. The method according to claim 4, characterized in that The length of the second uplink DCI is aligned with the length of the first downlink DCI, including: In a case where 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 with the length of the first downlink DCI.

6. The method according to claim 4, characterized in that The length of the first downlink DCI is aligned with the length of the second downlink DCI, including: 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 with the length of the second downlink DCI.

7. The method according to any one of claims 1 to 3, characterized in that The network side device performs a DCI length alignment operation on a target DCI sent on a common search space group, including: In a case where the first initial BWP includes a 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 a second DCI alignment mode; The second DCI alignment mode includes at least one of the following: The length of the first uplink DCI is aligned with the length of the second downlink DCI; The length of the first uplink DCI is aligned with the length of the second uplink DCI.

8. The method according to claim 7, characterized in that The length of the first uplink DCI is aligned with the length of the second uplink DCI, including: 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 with the length of the second uplink DCI.

9. The method according to any one of claims 1 to 3, characterized in that The network side device performs a DCI length alignment operation on a target DCI sent on a common search space group, including: In a case where 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 the target DCI sent on the common search space group according to a third DCI alignment mode; The third DCI alignment mode includes at least one of the following: The length of the first downlink DCI is aligned with the length of the second downlink DCI; The length of the first uplink DCI is aligned with the length of the first downlink DCI; The length of the first uplink DCI is aligned with the length of the second downlink DCI; The length of the first uplink DCI is aligned with the length of the second uplink DCI; The first downlink DCI maintains its original length.

10. The method according to claim 9, characterized in that The length of the first uplink DCI is aligned with the length of the first downlink DCI, including: In the case where the terminal cannot switch between the first initial downlink BWP and the second initial downlink BWP, or in the case where the terminal cannot switch between the first initial downlink BWP and the second initial downlink BWP and between the first initial uplink BWP and the second initial uplink BWP, the length of the first uplink DCI is aligned with the length of the first downlink DCI.

11. The method according to claim 9, characterized in that The length of the first uplink DCI is aligned with the length of the second uplink DCI, including: 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 with the length of the second uplink DCI.

12. The method according to claim 9, characterized in that The length of the first uplink DCI is aligned with the length of the second downlink DCI, including: 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 with the length of the second downlink DCI.

13. The method according to claim 9, characterized in that The first downlink DCI maintains the original length, including: In a case where the terminal cannot perform switching between the first initial downlink BWP and the second initial downlink BWP, the first downlink DCI maintains the original length.

14. The method according to claim 9, characterized in that The length of the first downlink DCI is aligned with the length of the second downlink DCI, including: 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 with the length of the second downlink DCI.

15. A method for acquiring downlink control information, characterized in that: include: The terminal detects target downlink control information DCI on the common search space group, and the terminal is configured with a first initial bandwidth part BWP; The target DCI is sent after the network side device performs a DCI length alignment operation; The DCI length alignment operation includes an alignment operation on 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, the second type of DCI is used to schedule time-frequency resources on the second initial BWP, the first type of DCI includes at least one of a first downlink DCI and a first uplink DCI, and the second type of DCI includes at least one of a second downlink DCI and a second uplink DCI; The first initial BWP includes: at least one of a first initial downlink BWP and a first initial uplink BWP; the second initial BWP includes: at least one of a second initial downlink BWP and a second initial uplink BWP; The terminal is a reduced-capability terminal, the first initial BWP is the initial BWP configured by the network side device for the reduced-capability terminal, and the second initial BWP is the initial BWP configured by the network side device for the non-reduced-capability terminal.

16. The method according to claim 15, characterized in that 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 one with the largest value among the at least two items in the first parameter; The one with the smallest value among at least two items of the first parameter; The first parameter includes: 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 of the first initial downlink BWP; The bandwidth size of the second initial downlink BWP.

17. The method according to claim 15, characterized in that 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 one with the largest value among the second parameters; The one with the smallest value among the second parameters; The second parameter includes: The bandwidth size of the second initial uplink BWP; The bandwidth size of the first initial uplink BWP.

18. The method according to any one of claims 15 to 17, characterized in that: Also includes: In a case where the first initial BWP includes a first initial downlink BWP, the terminal parses a target DCI on a common search space group according to a first DCI alignment mode; The first DCI alignment mode includes at least one of the following: The length of the first downlink DCI is aligned with the length of the second downlink DCI; The length of the second uplink DCI is aligned with the length of the first downlink DCI.

19. The method according to claim 18, characterized in that The length of the second uplink DCI is aligned with the length of the first downlink DCI, including: In a case where 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 with the length of the first downlink DCI.

20. The method according to claim 18, wherein The length of the first downlink DCI is aligned with the length of the second downlink DCI, including: 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 with the length of the second downlink DCI.

21. The method according to any one of claims 15 to 17, characterized in that: Also includes: In a case where the first initial BWP includes a first initial uplink BWP, the terminal parses a target DCI on a common search space group according to a second DCI alignment mode; The second DCI alignment mode includes at least one of the following: The length of the first uplink DCI is aligned with the length of the second downlink DCI; The length of the first uplink DCI is aligned with the length of the second uplink DCI.

22. The method according to claim 21, characterized in that The length of the first uplink DCI is aligned with the length of the second uplink DCI, including: 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 with the length of the second uplink DCI.

23. The method according to any one of claims 15 to 17, characterized in that Also includes: In a case where the first initial BWP includes a first initial downlink BWP and a first initial uplink BWP, the terminal parses the target DCI on the common search space group according to a third DCI alignment mode; The third DCI alignment mode includes at least one of the following: The length of the first downlink DCI is aligned with the length of the second downlink DCI; The length of the first uplink DCI is aligned with the length of the first downlink DCI; The length of the first uplink DCI is aligned with the length of the second downlink DCI; The length of the first uplink DCI is aligned with the length of the second uplink DCI; The first downlink DCI maintains its original length.

24. The method according to claim 23, wherein The length of the first uplink DCI is aligned with the length of the first downlink DCI, including: In the case where the terminal cannot switch between the first initial downlink BWP and the second initial downlink BWP, or in the case where the terminal cannot switch between the first initial downlink BWP and the second initial downlink BWP and between the first initial uplink BWP and the second initial uplink BWP, the length of the first uplink DCI is aligned with the length of the first downlink DCI.

25. The method according to claim 23, characterized in that The length of the first uplink DCI is aligned with the length of the second uplink DCI, including: 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 with the length of the second uplink DCI.

26. The method according to claim 23, wherein The length of the first uplink DCI is aligned with the length of the second downlink DCI, including: 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 with the length of the second downlink DCI.

27. The method according to claim 23, characterized in that The first downlink DCI maintains the original length, including: In a case where the terminal cannot perform switching between the first initial downlink BWP and the second initial downlink BWP, the first downlink DCI maintains the original length.

28. The method according to claim 23, wherein The length of the first downlink DCI is aligned with the length of the second downlink DCI, including: 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 with the length of the second downlink DCI.

29. A downlink control information sending device, characterized in that: include: 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 target downlink control information DCI sent on a 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; 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, the second type of DCI is used to schedule time-frequency resources on the second initial BWP, the first type of DCI includes at least one of a first downlink DCI and a first uplink DCI, and the second type of DCI includes at least one of a second downlink DCI and a second 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 terminal is a reduced-capability terminal, the first initial BWP is the initial BWP configured by the network side device for the reduced-capability terminal, and the second initial BWP is the initial BWP configured by the network side device for the non-reduced-capability terminal.

30. A downlink control information acquisition device, applied to a terminal configured with a first initial bandwidth part BWP, characterized in that: include: A detection module, configured to detect target downlink control information DCI on a common search space group; 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 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, the second type of DCI is used to schedule time-frequency resources on the second initial BWP, the first type of DCI includes at least one of a first downlink DCI and a first uplink DCI, and the second type of DCI includes at least one of a second downlink DCI and a second uplink DCI; The first initial BWP includes: at least one of a first initial downlink BWP and a first initial uplink BWP; the second initial BWP includes: at least one of a second initial downlink BWP and a second initial uplink BWP; The terminal is a reduced-capability terminal, the first initial BWP is the initial BWP configured by the network side device for the reduced-capability terminal, and the second initial BWP is the initial BWP configured by the network side device for the non-reduced-capability terminal.

31. A network side device, characterized in that: The method comprises a processor, a memory, and a program or instruction stored in the memory and executable on the processor, wherein the program or instruction, when executed by the processor, implements the steps of the method for sending downlink control information according to any one of claims 1 to 14.

32. A terminal, characterized in that: It includes a processor, a memory, and a program or instruction stored in the memory and executable on the processor, wherein when the program or instruction is executed by the processor, the steps of the downlink control information acquisition method according to any one of claims 15 to 28 are implemented.

33. A readable storage medium, characterized in that The readable storage medium stores a program or instruction, and when the program or instruction is executed by the processor, it implements the downlink control information sending method according to any one of claims 1 to 14, or implements the steps of the downlink control information acquisition method according to any one of claims 15 to 28.

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