Downlink Control Information Size Alignment Method and Apparatus, Communication Apparatus, and Storage Medium

Abstract

The present disclosure relates to a downlink control information size alignment method and apparatus, a communication device, and a storage medium. The downlink control information size alignment method includes determining that the size of downlink control information (DCI) for scheduling data of a plurality of cells is aligned with the size of DCI for scheduling data of a single cell. 【Solution means】According to the present disclosure, it is possible to determine that the size of DCI for scheduling data of a plurality of cells is aligned with the size of DCI for scheduling data of a single cell, thereby reducing the number of types of DCI received by a terminal in a serving cell and being advantageous for reducing the complexity of blind detection of DCI by the terminal.

Description

Technical Field

[0001] The present disclosure relates to the field of communication technologies, and specifically, to a downlink control information size alignment method, a downlink control information size alignment apparatus, a communication apparatus, and a computer-readable storage medium.

Background Art

[0002] 5G NR (New Radio) operates in a relatively wide spectrum range, and with the re-farming of the corresponding frequency band of the existing cellular network, the utilization rate of the corresponding spectrum is steadily improving. However, for FR1, the available frequency band resources are gradually being fragmented. In order to meet different spectrum demands, it is necessary to use these dispersed spectrum resources in a more spectrally efficient and flexible manner to achieve higher network throughput and a good coverage range.

[0003] Based on the current mechanism, one DCI (Downlink Control Information) in the existing serving cell is only allowed to schedule the data of one cell. On the other hand, as the fragmentation of frequency resources progresses, the need to schedule the data of multiple cells simultaneously is increasing, so it is necessary to introduce a DCI that schedules the data of multiple cells.

[0004] However, when introducing a new DCI, the types of DCI sizes may increase, and the sizes of too many types of DCI may increase the complexity for the terminal to blindly detect the DCI.

Summary of the Invention

Problems to be Solved by the Invention

[0005] In view of this, embodiments of the present disclosure provide a downlink control information size alignment method, a downlink control information size alignment apparatus, a communication device, and a computer-readable storage medium to solve the technical problems in the related art.

Means for Solving the Problems

[0006] According to a first aspect of embodiments of the present disclosure, a downlink control information size alignment method is provided, which is applied to a terminal. The method includes determining that the size of downlink control information (DCI) for scheduling data of a plurality of cells is aligned with the size of DCI for scheduling data of a single cell.

[0007] According to a second aspect of embodiments of the present disclosure, a downlink control information size alignment method is provided, which is applied to a terminal. The method includes determining that the size of first downlink control information (DCI) for scheduling uplink data of a plurality of cells is aligned with the size of second DCI for scheduling downlink data of a plurality of cells.

[0008] According to a third aspect of embodiments of the present disclosure, a downlink control information size alignment method is provided, which is applied to a terminal. The method includes determining that the size of DCI for scheduling data of a single cell is aligned according to a predefined mechanism; determining the size of DCI for scheduling data of a single cell and the size of DCI for scheduling data of a plurality of cells in a cell for transmitting the DCI; when the number of DCI size types is greater than a preset threshold, determining candidate DCI from the DCI for scheduling data of a single cell; determining target DCI from the candidate DCI; and determining that the size of the target DCI is aligned with the size of DCI for scheduling data of a plurality of cells.

[0009] According to a fourth aspect of the embodiments of the present disclosure, a downlink control information size alignment method is provided, which is applied to a network device, and the method includes a step of aligning the size of downlink control information (DCI) for scheduling data of a plurality of cells with the size of DCI for scheduling data of a single cell.

[0010] According to a fifth aspect of the embodiments of the present disclosure, a downlink control information size alignment method is provided, which is applied to a network device, and the method includes a step of aligning the size of a first downlink control information (DCI) for scheduling uplink data of a plurality of cells with the size of a second DCI for scheduling downlink data of a plurality of cells.

[0011] According to a sixth aspect of the embodiments of the present disclosure, a downlink control information size alignment method is provided, which is applied to a network device, and the method includes a step of aligning the size of DCI for scheduling data of a single cell according to a predefined mechanism, a step of determining the size of DCI for scheduling data of a single cell and the size of DCI for scheduling data of a plurality of cells in a cell for transmitting the DCI, a step of determining candidate DCI from the DCI for scheduling data of a single cell when the number of DCI size types is greater than a preset threshold, a step of determining target DCI from the candidate DCI, and a step of aligning the size of the target DCI with the size of DCI for scheduling data of a plurality of cells.

[0012] According to a seventh aspect of an embodiment of the present disclosure, a downlink control information size alignment apparatus is provided, which is applied to a terminal. The apparatus includes a processing module configured to determine that the size of downlink control information (DCI) for scheduling data of a plurality of cells is aligned with the size of DCI for scheduling data of a single cell.

[0013] According to an eighth aspect of an embodiment of the present disclosure, a downlink control information size alignment apparatus is provided, which is applied to a terminal. The apparatus includes a processing module configured to determine that the size of a first downlink control information (DCI) for scheduling uplink data of a plurality of cells is aligned with the size of a second DCI for scheduling downlink data of the plurality of cells.

[0014] According to a ninth aspect of an embodiment of the present disclosure, a downlink control information size alignment apparatus is provided, which is applied to a terminal. The apparatus determines that the size of DCI for scheduling data of a single cell is aligned according to a predefined mechanism, determines the size of DCI for scheduling data of a single cell in a cell for transmitting DCI and the size of DCI for scheduling data of a plurality of cells. When the number of DCI size types is greater than a preset threshold, candidate DCI is determined from the DCI for scheduling data of a single cell, a target DCI is determined from the candidate DCI, and the apparatus includes a processing module configured to determine that the size of the target DCI is aligned with the size of DCI for scheduling data of a plurality of cells.

[0015] According to a tenth aspect of an embodiment of the present disclosure, a downlink control information size alignment apparatus is provided, which is applied to a network device. The apparatus includes a processing module configured to align the size of downlink control information (DCI) for scheduling data of a plurality of cells with the size of DCI for scheduling data of a single cell.

[0016] According to an eleventh aspect of an embodiment of the present disclosure, a downlink control information size alignment apparatus is provided, which is applied to a network device. The apparatus includes a processing module configured to align the size of a first downlink control information (DCI) for scheduling uplink data of a plurality of cells with the size of a second DCI for scheduling downlink data of a plurality of cells.

[0017] According to a twelfth aspect of an embodiment of the present disclosure, a downlink control information size alignment apparatus is provided, which is applied to a network device. The apparatus aligns the size of DCI for scheduling data of a single cell according to a predefined mechanism, determines the size of DCI for scheduling data of a single cell in a cell for transmitting DCI and the size of DCI for scheduling data of a plurality of cells. When the number of DCI size types is greater than a preset threshold, candidate DCI is determined from the DCI for scheduling data of a single cell, target DCI is determined from the candidate DCI, and the apparatus includes a processing module configured to align the size of the target DCI with the size of DCI for scheduling data of a plurality of cells.

[0018] According to a thirteenth aspect of an embodiment of the present disclosure, an embodiment of the present disclosure further provides a communication device including a processor and a memory for storing a computer program. When the computer program is executed by the processor, the downlink control information size alignment method applied to the above terminal is realized.

[0019] According to a fourteenth aspect of an embodiment of the present disclosure, there is provided a communication device including a processor and a memory for storing a computer program, and when the computer program is executed by the processor, the downlink control information size alignment method applied to the above network device is realized.

[0020] According to a fifteenth aspect of an embodiment of the present disclosure, there is provided a computer-readable storage medium for storing a computer program, and when the computer program is executed by a processor, the steps in the downlink control information size alignment method applied to the above terminal are realized.

[0021] According to a sixteenth aspect of an embodiment of the present disclosure, there is provided a computer-readable storage medium for storing a computer program, and when the computer program is executed by a processor, the steps in the downlink control information size alignment method applied to the above network device are realized.

Advantages of the Invention

[0022] According to an embodiment of the present disclosure, it is possible to align the size of DCI for scheduling data of a plurality of cells with the size of DCI for scheduling data of a single cell, thereby reducing the number of DCI size types received by the terminal in the serving cell and being advantageous for reducing the complexity of blind detection of DCI by the terminal.

Brief Description of the Drawings

[0023] To more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings to be used in the description of the embodiments will be briefly described below. Obviously, the drawings in the following description are only some embodiments of the present disclosure, and those skilled in the art can obtain other drawings based on these drawings without creative efforts.

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Embodiments for Carrying Out the Invention

[0024] Hereinafter, in conjunction with the drawings of the embodiments of the present disclosure, the technical solutions in the embodiments of the present disclosure will be clearly and completely described. It is obvious that the described embodiments are only some embodiments of the present disclosure, not all embodiments. Based on the embodiments of the present disclosure, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present disclosure.

[0025] The terms used in the embodiments of the present disclosure are only for the purpose of describing specific embodiments and are not intended to limit the embodiments of the present disclosure. The singular forms "a" and "the" used in the embodiments of the present disclosure and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. The term "and / or" as used herein refers to any combination or all possible combinations of one or more of the related listed items.

[0026] In the embodiments of the present disclosure, terms such as first, second, third, etc. may be used to describe various information, but it should be understood that this information should not be limited to these terms. These terms are only used to distinguish the same type of information. For example, unless departing from the scope of the embodiments of the present disclosure, the first information can be called the second information, and similarly, the second information can also be called the first information. Depending on the context, the word "if" used herein can be interpreted as "when" or "in the case of" or "in response to a determination".

[0027] For the sake of brevity and ease of understanding, when representing size relationships in this specification, terms such as "larger" or "smaller", "higher" or "lower" are used. However, those skilled in the art will understand that the term "larger" also includes the meaning of "larger or equal", "smaller" also includes the meaning of "smaller or equal", "higher" includes the meaning of "higher or equal", and "lower" also includes the meaning of "lower or equal".

[0028] This embodiment provides several methods for downlink control information (DCI) size alignment. The downlink control information size alignment method can be applied to a terminal, which includes, but is not limited to, communication devices such as mobile phones, tablet computers, wearable devices, sensors, and Internet of Things devices. The terminal can communicate with a network device, which includes, but is not limited to, network devices in communication systems such as 4G, 5G, 6G, etc., such as base stations and core networks.

[0029] Note that the DCI size, that is, the DCI size, may also be translated as the DCI magnitude, may also refer to the number of bits occupied by the DCI, or may be referred to as the length of the DCI.

[0030] In all embodiments of the present disclosure, the data of the serving cell may refer to the PDSCH (Physical Downlink Shared Channel) of the serving cell, or may also refer to the PUSCH (Physical Uplink Shared Channel) of the serving cell, etc.

[0031] In all embodiments of the present disclosure, the DCI alignment method includes at least one of zero padding, addition of a reserved state, and reduction of the number of bits occupied by a specific DCI field, but is not limited thereto.

[0032] Taking two DCIs, DCI#1 and DCI#2, as an example, for instance, the size of DCI#1 is 3 bits, and the size of DCI#2 is 2 bits. DCI#1 includes information field #1 and information field #2. Information field #1 occupies 2 bits, and information field #2 occupies 1 bit. DCI#2 also includes information field #1 and information field #2. Information field #1 occupies 1 bit, and information field #2 occupies 1 bit. The information field #1 in DCI#1 and the information field #1 in DCI#2 are information fields of the same type, and the information field #2 in DCI#1 and the information field #2 in DCI#2 are information fields of the same type. In this case, the above two methods will be exemplified.

[0033] For example, DCI#1 and DCI#2 can be aligned in a zero-padding manner, and 1 bit can be supplemented after the 2 bits of DCI#2. Thereby, DCI#2 becomes the same size as DCI#1, both being 3 bits.

[0034] In this case, the states that can be indicated by DCI#2 after alignment and DCI#2 before alignment are the same, and 4 states, which are powers of 2, can be indicated. The third bit (i.e., the supplemented bit) in DCI#2 after alignment is always 0, and only the first 2 bits change according to the indicated content.

[0035] For example, DCI#1 and DCI#2 can be aligned in a way of adding reserved states, and information fields of the same type can be preferentially aligned. For example, if the information field #2 in DCI#1 and the information field #2 in DCI#1 are not yet aligned, the information field #2 in DCI#1 and the information field #2 in DCI#2 can be preferentially aligned. For example, 1 bit is supplemented after the bit occupied by the information field #2 in DCI#2. Thereby, DCI#2 becomes the same size as DCI#1, both being 3 bits.

[0036] In this case, the information field #2 in DCI#2 can indicate more states after alignment than before alignment. For example, the information field #2 in DCI#2 before alignment can indicate one power of 2, a total of two states, and the DCI#2 after alignment can indicate two powers of 2, a total of four states. The first two states may be the same as the two states indicated by the information field #2 in DCI#2 before alignment, and the other two states may be newly added reserved states. The three bits in DCI#2 after alignment can all change according to the indicated content.

[0037] Of course, the alignment method is not limited to the method of adding bits such as zero padding and adding reserved states as described above. It is also possible to align by reducing the bits in a specific information field. For example, the same type of information fields can be preferentially aligned. Since the information field #2 in DCI#1 and the information field #2 in DCI#1 are not yet aligned, the information field #2 in DCI#1 and the information field #2 in DCI#2 can be preferentially aligned. For example, if the number of bits occupied by the information field #2 in DCI#1 is reduced by 1 bit, the sizes of DCI#2 and DCI#1 will be the same, both being two bits.

[0038] Figure 1 is a schematic flowchart of a downlink control information size alignment method shown by an embodiment of the present disclosure. As shown in Figure 1, the downlink control information size alignment method can include the following step S101.

[0039] In step S101, it is determined that the size of the downlink control information (DCI) for scheduling data of a plurality of cells is aligned with the size of the DCI for scheduling data of a single cell.

[0040] In one embodiment, the DCI for scheduling the data of a single cell may be legacy DCI. For example, the DCI for scheduling the data of a single cell may include at least one of DCI format 0_0, DCI format 1_0, DCI format 0_1, DCI format 1_1, DCI format 0_2, and DCI format 1_2.

[0041] In one embodiment, the DCI for scheduling the data of multiple cells may be provided to be different from the format of the legacy DCI for scheduling the data of a single cell, or may be provided to be the same as the format of the legacy DCI for scheduling the data of a single cell. Hereinafter, the technical solution of the present disclosure will be exemplarily described mainly when the DCI for scheduling the data of multiple cells is different from the format of the legacy DCI for scheduling the data of a single cell.

[0042] In one embodiment, the DCI for scheduling the data of multiple cells may include a first DCI for scheduling the uplink data of multiple cells and a second DCI for scheduling the downlink data of multiple cells. For example, the DCI for scheduling the data of multiple cells may be provided to include DCI format 0_3 and / or DCI format 1_3. The first DCI is DCI format 0_3 and is used for scheduling the uplink data of multiple cells, and the second DCI is DCI format 1_3 and is used for scheduling the downlink data of multiple cells.

[0043] Note that, in some cases, the DCI for scheduling data of multiple cells can also be used to schedule data of a single cell. The format of the first DCI and the format of the second DCI may be the same or different. Hereinafter, when the format of the first DCI and the format of the second DCI are different, an exemplary description will be given.

[0044] In the prior art, generally only the DCI for scheduling data of a single cell is included. Therefore, after newly adding the DCI for scheduling data of multiple cells, the size of the DCI for scheduling data of multiple cells and the size of the DCI for scheduling data of a single cell may be different. As a result, the number of types of DCI sizes received by the terminal in the serving cell increases, and the complexity of the terminal blindly detecting the DCI increases.

[0045] According to an embodiment of the present disclosure, the network device can align the size of the DCI for scheduling data of multiple cells with the size of the DCI for scheduling data of a single cell. Accordingly, the terminal can determine that the size of the DCI for scheduling data of multiple cells is aligned with the size of the DCI for scheduling data of a single cell. This is advantageous for reducing the number of types of DCI sizes received by the terminal in the serving cell and reducing the complexity of the terminal blindly detecting the DCI.

[0046] In all embodiments of the present disclosure, the serving cell may be the cell where the terminal receives the DCI for scheduling data of multiple cells and the DCI for scheduling data of a single cell, and may be, for example, a primary cell, a primary secondary cell, a secondary cell, or the like.

[0047] Note that in all embodiments of the present disclosure, for the network device to align the size of the DCI, it means that the network device executes an actual alignment operation based on steps. For example, by changing the size of one or more DCIs, the sizes of multiple DCIs are aligned, and they are aligned in ways such as zero-padding, adding reserved states, and reducing the number of bits occupied by specific information fields.

[0048] For the terminal to determine that the size of the DCI is aligned, it does not mean changing the size of the DCI, such as aligning the size of the DCI. Instead, by inferring the alignment operation according to the steps, the size of the DCI after performing the alignment operation according to the steps is determined. For example, the number of bits occupied by the DCI is determined, and further, the detection and analysis of the corresponding DCI are realized based on the size of the DCI. Also, based on this, the terminal can determine which bits of the DCI belong to the padded bits, facilitating the accurate analysis of the DCI.

[0049] FIG. 2 is a schematic flowchart of another downlink control information size alignment method shown by an embodiment of the present disclosure. As shown in FIG. 2:

[0050] In step A1, align the size of DCI format 0_0 and the size of DCI format 1_0 in the CSS (Common Search Space), which can be translated as "DCI size alignment of DCI format 0_0 and DCI format 1_0 in CSS".

[0051] In step A2, align the size of DCI format 0_0 and the size of DCI format 1_0 in the USS (UE Specific Search Space), which can be translated as "DCI size alignment of DCI format 0_0 and DCI format 1_0 in USS".

[0052] In step A3, perform a non-fallback DCI operation. For example, align the size of DCI format 0_1 corresponding to the supplementary uplink (SUL) and the size of DCI format 0_1 corresponding to non-SUL, which can be translated as "DCI size alignment of format 0_1 SUL / non SUL".

[0053] In step A4, perform a DCI operation corresponding to URLLC (Ultra-reliable and Low Latency Communications). For example, align the size of DCI format 0_2 corresponding to the supplementary uplink (SUL) and the size of DCI format 0_2 corresponding to non-SUL, which can be translated as "DCI size alignment of format 0_2 SUL / non SUL".

[0054] In step A5, determine whether the first preset condition is satisfied (for example, for legacy DCI): whether the number of types of DCI sizes scrambled by C-RNTI (Cell-Radio Network Temporary Identifier) for the terminal in the serving cell is 3 or less, and whether the number of types of DCI sizes configured for the terminal in the serving cell is 4 or less. If the first preset condition is satisfied, the DCI alignment process can be terminated; if the first preset condition is not satisfied, proceed to the next step (step A6).

[0055] In addition, in step A6 and each step after step A6, it is necessary to determine again whether the first preset condition is satisfied: the number of DCI size types scrambled by C-RNTI for the terminal in the serving cell is 3 or less, and the number of DCI size types set for the terminal in the serving cell is 4 or less. When the first preset condition is satisfied, the alignment process ends; when the first preset condition is not satisfied, proceed to the next step. For the sake of simplicity, it is only shown in the figure, and the description of the text part is omitted.

[0056] In step A6, the alignment operation of the size of DCI format 0_0 / 1_0 in USS and the size of DCI format 0_0 / 1_0 in CSS is as follows.

[0057]

Number

[0058] Step A6 can be translated as "DCI size alignment of DCI format 0_0 / 1_0 in USS and DCI format 0_0 / 1_0 in CSS".

[0059] In step A7, align the size of DCI format 0_2 and the size of DCI format 1_2, which can be translated as "DCI size alignment of DCI format 0_2 / 1_2".

[0060] In step A8, align the size of DCI format 0_1 and the size of DCI format 1_1, which can be translated as "DCI size alignment of DCI format 0_1 / 1_1".

[0061] In step A9, align the sizes of DCI format 0_1 / 1_1 and DCI format 0_3 / 1_3 (that is, align the size of DCI format 0_1 and the size of DCI format 0_3, and align the size of DCI format 1_1 and the size of DCI format 1_3), which can be translated as DCI size alignment of DCI format 0_1 / 1_1 and DCI format 0_3 / 1_3.

[0062] Here, the alignment method can include determining the sizes of two DCIs that need to be aligned, further determining the difference between the sizes of the two DCIs, and padding bits for the DCI with a relatively smaller size based on the difference.

[0063] Taking the alignment of the size of DCI format 0_1 and the size of DCI format 0_3 as an example, for example, the size of DCI format 0_1 is 20 bits, and the size of DCI format 0_3 is 30 bits. It is determined that the difference between the size of DCI format 0_3 and the size of DCI format 0_1 is 10 bits, and 10 bits can be padded at the end of DCI format 0_1 in the way of zero padding. The size of DCI format 0_1 after padding bits is also 30 bits, thereby realizing the alignment of the size of DCI format 0_1 and the size of DCI format 0_3.

[0064] Since the sizes of DCI format 0_1 and DCI format 1_1 have already been aligned in step A8, in step A9, after aligning the sizes of DCI format 0_1 and DCI format 0_3 and aligning the sizes of DCI format 1_1 and DCI format 1_3, the sizes of DCI format 0_1 and DCI format 0_3 can be made the same, and / or the sizes of DCI format 1_1 and DCI format 1_3 can be made the same, effectively reducing the number of DCI size types.

[0065] Also, after previously aligning the sizes of DCI format 0_3 and DCI format 1_3 and determining that the above first preset condition is not satisfied, step A9 above can also be executed. The alignment of the sizes of DCI format 0_3 and DCI format 1_3 will be described in subsequent embodiments.

[0066] As shown in FIG. 2, before aligning the size of downlink control information (DCI) (e.g., DCI format 0_3 / 1_3) for scheduling data of multiple cells and the size of DCI (e.g., DCI format 0_1 / 1_1) for scheduling data of a single cell, the sizes of other DCI can be aligned. The operation of aligning the size of downlink control information (DCI) for scheduling data of multiple cells and the size of DCI for scheduling data of a single cell can be set, as shown in FIG. 2, after step A9, that is, after all alignment steps, and the execution order can be adjusted as needed and can also be set between any two steps.

[0067] Note that, in order to avoid duplicate explanations, for the terminal, the terminal "determines that... is aligned", and for the network device, the network device "aligns...", both are explained as "aligns..." as shown in FIG. 2 and FIGS. 4, 5, 7, 8, 10 in the subsequent embodiments. However, it should be understood that when the description "aligns..." in these drawings is applied to the terminal, it can be replaced by "determines that... is aligned", and when it is applied to the network device, it is understood as "aligns...".

[0068] FIG. 3 is a schematic flowchart of another downlink control information size alignment method shown by an embodiment of the present disclosure. As shown in FIG. 3, the method further includes the following step S301.

[0069] In step S301, before determining that the size of the DCI for scheduling data of a plurality of cells is aligned with the size of the DCI for scheduling data of a single cell, it is determined that the size of the first DCI is aligned with the size of the second DCI.

[0070] In one embodiment, before determining that the size of the DCI for scheduling data of a plurality of cells is aligned with the size of the DCI for scheduling data of a single cell, if the sizes of the first DCI and the second DCI are different, it can be first determined that the size of the first DCI is aligned with the size of the second DCI.

[0071] After determining that the size of the first DCI and the size of the second DCI are aligned, it is possible to determine whether the first preset condition is satisfied. If the first preset condition is satisfied, there is no need to perform subsequent alignment operations. For example, it is not necessary to determine that the size of the DCI for scheduling data of multiple cells is aligned with the size of the DCI for scheduling data of a single cell. If the first preset condition is not satisfied, subsequent alignment operations can continue to be performed. For example, it is determined that the size of the DCI for scheduling data of multiple cells is aligned with the size of the DCI for scheduling data of a single cell.

[0072] FIG. 4 is a schematic flowchart of another downlink control information size alignment method shown by an embodiment of the present disclosure. As shown in FIG. 4, based on the embodiment shown in FIG. 2, the step of determining that the size of the first DCI and the size of the second DCI are aligned includes the step of determining that the size of the DCI format 0_1 and the size of the DCI format 1_1 are aligned, and then determining that the size of the first DCI and the size of the second DCI are aligned.

[0073] In one embodiment, since the size of the first DCI and / or the second DCI, for example, the size of the DCI format 0_3 and / or the DCI format 1_3 is relatively large (that is, the number of bits occupied is relatively large), in order to determine that the size of the DCI format 0_3 and the size of the DCI format 1_3 are aligned, the number of bits to be supplemented (for example, supplementing the DCI format 0_3 or supplementing the DCI format 1_3) is relatively large. On the other hand, the communication resources occupied by a large number of bits are large, and the transmission efficiency of the PDCCH (Physical Downlink Control Channel) where the DCI is located decreases.

[0074] In this embodiment, after determining that the sizes of DCI format 0_1 and DCI format 1_1 are aligned, it is determined that the sizes of DCI format 0_3 and DCI format 1_3 are aligned.

[0075] After determining that the sizes of DCI format 0_1 and DCI format 1_1 are aligned, it is necessary to determine whether the first preset condition is satisfied. Therefore, when the first preset condition is satisfied, the alignment process can be terminated, and it is no longer necessary to determine that the sizes of DCI format 0_3 and DCI format 1_3 are aligned. On the other hand, when the first preset condition is not satisfied, it is further determined that the sizes of DCI format 0_3 and DCI format 1_3 are aligned.

[0076] That is, after determining that the sizes of DCI format 0_1 and DCI format 1_1 are aligned, it may not be necessary to determine that the sizes of DCI format 0_3 and DCI format 1_3 are aligned. Therefore, the problem that the PDCCH transmission efficiency decreases due to the large number of supplementary bits can be alleviated to a certain extent.

[0077] FIG. 5 is a schematic flowchart of another downlink control information size alignment method shown by an embodiment of the present disclosure. As shown in FIG. 5, based on the embodiment shown in FIG. 2, the step of determining that the sizes of the first DCI and the second DCI are aligned includes the step of determining that the sizes of DCI format 0_2 and DCI format 1_2 are aligned before determining that the sizes of the first DCI and the second DCI are aligned.

[0078] In one embodiment, since the first DCI and the second DCI, e.g., DCI format 0_3 and / or DCI format 1_3, are DCIs for scheduling data of multiple cells, they belong to a newly added DCI format with respect to the DCI for scheduling data of a single cell, and to minimize the impact on the legacy DCI format, e.g., DCI format 0_2, DCI format 1_2, DCI format 0_1, DCI format 1_1, in this embodiment, after determining that the sizes of DCI format 0_2 and DCI format 1_2 are aligned, the sizes of DCI format 0_3 and DCI format 1_3 can be determined to be aligned.

[0079] After determining that the sizes of DCI format 0_3 and DCI format 1_3 are aligned, it is necessary to determine whether the first preset condition is satisfied. When the first preset condition is satisfied, the alignment process ends, and it is no longer necessary to determine that the sizes of DCI format 0_2 and DCI format 1_2 are aligned. On the other hand, when the first preset condition is not satisfied, it is further determined that the sizes of DCI format 0_2 and DCI format 1_2 are aligned.

[0080] That is, it is possible to first determine that the sizes of DCI format 0_3 and DCI format 1_3 are aligned, and it may not be necessary to further determine that the sizes of DCI format 0_2 and DCI format 1_2 are aligned, thereby reducing the impact on legacy DCI formats such as DCI format 0_2 and DCI format 1_2.

[0081] In one embodiment, the method further includes a step in which the terminal does not desire that the number of size types of DCIs received in the serving cell be more than four, and a step in which the terminal does not desire that the number of size types of DCIs scrambled by a cell radio network temporary identifier (C-RNTI) received in the serving cell be more than three.

[0082] By the alignment operation in the above embodiment, it can be ensured that the number of size types of DCIs received by the terminal in this serving cell is not more than four (i.e., four or less), and the number of size types of DCIs scrambled by the C-RNTI received by the terminal in the serving cell is not more than three (i.e., three or less). Accordingly, when the terminal blindly detects a DCI in the serving cell, the terminal can blindly detect according to the case where the size of the DCI is four or less and the size of the DCI scrambled by the C-RNTI is three or less. Thereby, the requirement of "3 + 1" is satisfied, and the complexity of the terminal's blind detection is reduced.

[0083] In all embodiments of the present disclosure, the network device can provide a specific indication field for indicating the DCI format in different DCIs. For example, it indicates that the DCI is a DCI for scheduling data of a single cell (e.g., legacy DCI), or a newly added DCI (e.g., DCI format 0_3, DCI format 1_3).

[0084] The network device can also scramble different DCIs with different RNTIs. For example, with the C-RNTI, it can scramble the DCI for scheduling the data of a single cell, and with a newly defined RNTI (e.g., MCS-RNTI (multi-carrier scheduling-RNTI), which can be called a multi-cell scheduling RNTI), or an RNTI other than the C-RNTI (e.g., configured scheduling radio network temporary identifier (CS-RNTI), semi-static channel state information radio network temporary identifier (SP-CSI-RNTI), modulation and coding scheme cell radio network temporary identifier (MCS-C-RNTI)), it can scramble the DCI for scheduling the data of multiple cells.

[0085] Accordingly, the terminal can distinguish the DCI by the RNTI that scrambles the DCI. For example, if it is determined that the RNTI scrambling the DCI is the C-RNTI, it can be determined that the DCI scrambled by the C-RNTI is the DCI for scheduling the data of a single cell. For example, if it is determined that the RNTI scrambling the DCI is the MCS-RNTI, it can be determined that the DCI scrambled by the MCS-RNTI is the DCI for scheduling the data of multiple cells.

[0086] In one embodiment, when at least one PDCCH candidate corresponding to a first USS and DCI format 0_2 and at least one PDCCH candidate corresponding to a second USS and DCI format 0_3 are mapped to the same resource, the method includes a step in which the terminal does not desire that the DCI length of DCI format 0_2 corresponding to the first USS and the DCI length of DCI format 0_3 are the same; and when at least one PDCCH candidate among DCI format 1_2 corresponding to the first USS and DCI format 1_3 corresponding to the second USS is mapped to the same resource, the method includes a step in which the terminal does not desire that the DCI size of DCI format 1_2 corresponding to the first USS and the DCI size of DCI format 1_3 are the same.

[0087] FIG. 6 is a schematic flowchart of a downlink control information size alignment method shown by an embodiment of the present disclosure. As shown in FIG. 6, the downlink control information size alignment method can include the following step S601.

[0088] In step S601, it is determined that the size of a first downlink control information (DCI) for scheduling uplink data of a plurality of cells and the size of a second DCI for scheduling downlink data of the plurality of cells are aligned.

[0089] In one embodiment, the DCI for scheduling data of a single cell may be a legacy DCI. For example, the DCI for scheduling data of a single cell includes at least one of DCI format 0_0, DCI format 1_0, DCI format 0_1, DCI format 1_1, DCI format 0_2, and DCI format 1_2.

[0090] Note that legacy DCI includes, but is not limited to, DCI such as DCI format 0_1, DCI format 1_1, DCI format 0_2, DCI format 1_2, DCI format 0_0, and DCI format 1_0.

[0091] In one embodiment, the DCI for scheduling data of a plurality of cells may be provided to be different from the format of the legacy DCI for scheduling data of a single cell, or may be provided to be the same as the format of the legacy DCI for scheduling data of a single cell. Hereinafter, the technical solution of the present disclosure will be exemplarily described mainly when the DCI for scheduling data of a plurality of cells is different from the format of the legacy DCI for scheduling data of a single cell.

[0092] In one embodiment, the DCI for scheduling data of a plurality of cells may include a first DCI for scheduling uplink data of a plurality of cells and a second DCI for scheduling downlink data of a plurality of cells. For example, the DCI for scheduling data of a plurality of cells may be provided to include DCI format 0_3 and / or DCI format 1_3. The first DCI is DCI format 0_3 and is used for scheduling uplink data of a plurality of cells, and the second DCI is DCI format 1_3 and is used for scheduling downlink data of a plurality of cells.

[0093] In the prior art, generally only DCI for scheduling data of a single cell is included. Therefore, after newly adding a first DCI for scheduling uplink data of multiple cells and a second DCI for scheduling downlink data of multiple cells, the size of the first DCI and the size of the second DCI may be different. As a result, the number of types of DCI sizes received by the terminal in the serving cell (for example, the cell that transmits DCI for scheduling data of multiple cells and DCI for scheduling data of a single cell) increases, and thereby the complexity for the terminal to blindly detect DCI increases.

[0094] According to an embodiment of the present disclosure, the network device can align the size of a first DCI for scheduling uplink data of multiple cells and the size of a second DCI for scheduling downlink data of multiple cells. Accordingly, the terminal can determine that the size of the first DCI for scheduling uplink data of multiple cells and the size of the second DCI for scheduling downlink data of multiple cells are aligned. This is advantageous for reducing the number of types of DCI received by the terminal in the serving cell and reducing the complexity for the terminal to blindly detect DCI.

[0095] In one embodiment, the step of determining that the size of the first DCI and the size of the second DCI are aligned includes the step of determining that the size of DCI format 0_1 and the size of DCI format 1_1 are aligned, and then determining that the size of the first DCI and the size of the second DCI are aligned.

[0096] FIG. 7 is a schematic flowchart of another downlink control information size alignment method shown by an embodiment of the present disclosure. As shown in FIG. 7:

[0097] In step B1, align the sizes of DCI format 0_0 and DCI format 1_0 in CSS, which can be translated as "DCI size alignment of DCI format 0_0 and DCI format 1_0 in CSS".

[0098] In step B2, align the sizes of DCI format 0_0 and DCI format 1_0 in USS, which can be translated as "DCI size alignment of DCI format 0_0 and DCI format 1_0 in USS".

[0099] In step B3, perform a non-fallback DCI operation. For example, align the size of DCI format 0_1 corresponding to the supplementary uplink SUL and the size of DCI format 0_1 corresponding to non-SUL, which can be translated as "DCI size alignment of format 0_1 SUL / non SUL".

[0100] In step B4, perform a DCI operation corresponding to URLLC. For example, align the size of DCI format 0_2 corresponding to the supplementary uplink SUL and the size of DCI format 0_2 corresponding to non-SUL, which can be translated as "DCI size alignment of format 0_2 SUL / non SUL".

[0101] In step B5, determine whether the second preset condition is met: whether the number of DCI size types scrambled by C-RNTI for the terminal in the serving cell is 4 or less, and whether the number of DCI size types set for the terminal in the serving cell is 5 or less. If the second preset condition is met, the DCI alignment process can be terminated. If the second preset condition is not met, proceed to the next step (step B6).

[0102] Note that in step B6 and each step after step B6, it is necessary to determine again whether the second preset condition is met: the number of size types of DCI scrambled by C-RNTI for the terminal in the serving cell is 4 or less, and the number of size types set for the terminal in the serving cell is 5 or less. When the above second preset condition is met, the alignment process ends; when the above second preset condition is not met, proceed to the next step. For the sake of simplicity, it is only shown in the figure and the description of the text part is omitted.

[0103] In step B6, the size alignment operation of DCI format 0_0 / 1_0 in USS and DCI format 0_0 / 1_0 in CSS, the specific operation process is the same as the specific operation process in step A6 described above, and the description is omitted here.

[0104] Step B6 can be translated as "DCI size alignment of DCI format 0_0 / 1_0 in USS and DCI format 0_0 / 1_0 in CSS".

[0105] In step B7, align the size of DCI format 0_2 and the size of DCI format 1_2, which can be translated as "DCI size alignment of DCI format 0_2 / 1_2".

[0106] In step B8, align the size of DCI format 0_1 and the size of DCI format 1_1, which can be translated as "DCI size alignment of DCI format 0_1 / 1_1".

[0107] In step B9, align the size of DCI format 0_3 and the size of DCI format 1_3, which can be translated as DCI size alignment of DCI format 0_3 / 1_3.

[0108] The alignment method can include determining the sizes of two DCIs that need to be aligned, further determining the difference between the sizes of the two DCIs, and padding bits for the DCI with a relatively smaller size based on the difference.

[0109] Taking the alignment of the size of DCI format 0_3 and the size of DCI format 1_3 as an example, for example, the size of DCI format 0_3 is 20 bits and the size of DCI format 1_3 is 30 bits. First, it is determined that the difference between the size of DCI format 1_3 and the size of DCI format 0_3 is 10 bits, and 10 bits can be padded at the end of DCI format 0_3 in the way of zero padding. The size of DCI format 0_3 after padding bits is also 30 bits, thereby realizing the alignment of the size of DCI format 0_3 and the size of DCI format 1_3.

[0110] In one embodiment, since the sizes of the first DCI and / or the second DCI, such as DCI format 0_3 and / or DCI format 1_3, are relatively large (that is, the number of bits occupied is relatively large), to align the size of DCI format 0_3 and the size of DCI format 1_3, the number of bits that need to be padded (for example, padding DCI format 0_3 or padding DCI format 1_3) is relatively large. On the other hand, a large number of communication resources are occupied by a large number of bits, and the transmission efficiency of the PDCCH (Physical Downlink Control Channel) where the DCI is located decreases.

[0111] In this embodiment, first, the sizes of DCI format 0_1 and DCI format 1_1 are aligned, and then the sizes of DCI format 0_3 and DCI format 1_3 are aligned.

[0112] After aligning the sizes of DCI format 0_1 and DCI format 1_1, it is necessary to determine the first preset condition. When the first preset condition is met, the alignment process ends, and there is no need to further align the sizes of DCI format 0_3 and DCI format 1_3. On the other hand, when the first preset condition is not met, the sizes of DCI format 0_3 and DCI format 1_3 are further aligned.

[0113] That is, first align the sizes of DCI format 0_1 and DCI format 1_1, and there may be no need to align the sizes of DCI format 0_3 and DCI format 1_3. Therefore, to a certain extent, the problem that the PDCCH transmission efficiency decreases due to the large number of supplemented bits can be alleviated.

[0114] In one embodiment, the step of aligning the size of the first DCI and the size of the second DCI includes the step of aligning the size of the first DCI and the size of the second DCI before aligning the sizes of DCI format 0_2 and DCI format 1_2.

[0115] FIG. 8 is a schematic flowchart of another downlink control information size alignment method shown by an embodiment of the present disclosure. As shown in FIG. 8:

[0116] In step B1, align the sizes of DCI format 0_0 and DCI format 1_0 in CSS, which can be translated as "DCI size alignment of DCI format 0_0 and DCI format 1_0 in CSS".

[0117] In step B2, align the sizes of DCI format 0_0 and DCI format 1_0 in USS, which can be translated as "DCI size alignment of DCI format 0_0 and DCI format 1_0 in USS".

[0118] In step B3, perform a non-fallback DCI operation. For example, align the size of DCI format 0_1 corresponding to the supplementary uplink SUL and the size of DCI format 0_1 corresponding to non-SUL, which can be translated as "DCI size alignment of format 0_1 SUL / non SUL".

[0119] In step B4, perform a DCI operation corresponding to URLLC. For example, align the size of DCI format 0_2 corresponding to the supplementary uplink SUL and the size of DCI format 0_2 corresponding to non-SUL, which can be translated as "DCI size alignment of format 0_2 SUL / non SUL".

[0120] In step B5, determine whether (for example, for legacy DCI) it meets the second preset condition: whether the number of types of DCI sizes scrambled by C-RNTI for the terminal in the serving cell is 3 or less, and whether the number of types of DCI sizes set for the terminal in the serving cell is 4 or less. If the second preset condition is met, the DCI alignment process can be terminated. If the second preset condition is not met, proceed to the next step (step B6).

[0121] In addition, in step B6 and each step after step B6, it is possible to determine again whether the second preset condition is satisfied: the number of types of DCI sizes scrambled by C-RNTI for the terminal in the serving cell is 4 or less, and the number of types of DCI sizes set for the terminal in the serving cell is 5 or less. When the second preset condition is satisfied, the alignment process ends; when the second preset condition is not satisfied, proceed to the next step. For the sake of simplicity, it is only shown in the figure and the description of the text part is omitted.

[0122] In step B6, the size alignment operation of DCI format 0_0 / 1_0 in USS and DCI format 0_0 / 1_0 in CSS, the specific operation process is the same as the specific operation process in step A6 described above, and the description is omitted here.

[0123] Step B6 can be translated as "DCI size alignment of DCI format 0_0 / 1_0 in USS and DCI format 0_0 / 1_0 in CSS".

[0124] In step B6', align the size of DCI format 0_3 and the size of DCI format 1_3, which can be translated as "DCI alignment size of DCI format 0_3 / 1_3", and the alignment method may be the same as the alignment method shown in Figure 7 above, and the description is omitted here.

[0125] In step B7, align the size of DCI format 0_2 and the size of DCI format 1_2, which can be translated as "DCI size alignment of DCI format 0_2 / 1_2".

[0126] In step B8, the sizes of DCI format 0_1 and DCI format 1_1 are aligned, which can be translated as DCI size alignment of DCI format 0_1 / 1_1.

[0127] In one embodiment, since the first DCI and the second DCI, for example, DCI format 0_3 and / or DCI format 1_3, are DCIs for scheduling data of a plurality of cells, they belong to a newly added DCI format with respect to the DCI for scheduling data of a single cell, and the influence on the legacy DCI format is reduced as much as possible. For example, this is to reduce the influence on DCI format 0_2, DCI format 1_2, DCI format 0_1, and DCI format 1_1.

[0128] In this embodiment, after aligning the sizes of DCI format 0_2 and DCI format 1_2, the sizes of DCI format 0_3 and DCI format 1_3 can be aligned.

[0129] After aligning the sizes of DCI format 0_3 and DCI format 1_3, it is necessary to determine whether the first preset condition is satisfied. If the first preset condition is satisfied, the alignment process ends. As a result, there is no need to further align the sizes of DCI format 0_2 and DCI format 1_2. On the other hand, if the first preset condition is not satisfied, the sizes of DCI format 0_2 and DCI format 1_2 are further aligned.

[0130] That is, it may not be necessary to align the size of DCI format 0_3 and the size of DCI format 1_3 first, and further align the size of DCI format 0_2 and the size of DCI format 1_2, thereby reducing the impact on legacy DCI formats such as DCI format 0_2 and DCI format 1_2.

[0131] In one embodiment, the method further includes a step of not desiring that the number of size types of DCI received in a serving cell is more than five, and a step of not desiring that the number of size types of DCI scrambled by a radio network temporary identifier (RNTI) received in the serving cell is more than four.

[0132] By the alignment operation in the above embodiment, it can be ensured that the number of size types of DCI received in the serving cell by the terminal is not more than five (i.e., five or less), and the number of size types of DCI scrambled by the RNTI received in the serving cell by the terminal is not more than four (i.e., four or less). Thus, when the terminal performs blind detection of DCI, the terminal can perform blind detection according to the case where the size of DCI is five or less and the size of DCI scrambled by the RNTI is four or less. This meets the "4 + 1" requirement and reduces the complexity of blind detection of the terminal.

[0133] The RNTI includes, but is not limited to, C-RNTI and newly defined RNTI.

[0134] In all embodiments of the present disclosure, the network device can provide a specific indication field for indicating the format of DCI in different DCIs. For example, it indicates that the DCI is a DCI for scheduling data of a single cell (e.g., legacy DCI), or a newly added DCI (e.g., DCI format 0_3, DCI format 1_3).

[0135] The network device can also scramble different DCIs with different RNTIs. For example, with the C-RNTI, it scrambles the DCI for scheduling the data of a single cell, and with a newly defined RNTI (e.g., MCS-RNTI (multi-carrier scheduling-RNTI), which can be called a multi-cell scheduling RNTI), or an RNTI other than the C-RNTI (e.g., CS-RNTI, SP-CSI-RNTI, MCS-C-RNTI), it can scramble the DCI for scheduling the data of multiple cells.

[0136] Accordingly, the terminal can distinguish the DCI by the RNTI that scrambles the DCI. For example, when it is determined that the RNTI scrambling the DCI is the C-RNTI, it can be determined that the DCI scrambled by the C-RNTI is the DCI for scheduling the data of a single cell. For example, when it is determined that the RNTI scrambling the DCI is the MCS-RNTI, it can be determined that the DCI scrambled by the MCS-RNTI is the DCI for scheduling the data of multiple cells.

[0137] In one embodiment, the method includes: when at least one PDCCH candidate corresponding to the first USS's DCI format 0_2 and the second USS's DCI format 0_3 is mapped to the same resource, the step that the terminal does not desire the DCI lengths of the DCI format 0_2 corresponding to the first USS and the DCI format 0_3 to be the same; and when at least one PDCCH candidate among the DCI format 1_2 corresponding to the first USS and the DCI format 1_3 corresponding to the second USS is mapped to the same resource, the step that the terminal does not desire the DCI length of the DCI format 1_2 corresponding to the first USS and the DCI length of the DCI format 1_3 to be the same.

[0138] FIG. 9 is a schematic flowchart of a downlink control information size alignment method shown by an embodiment of the present disclosure. As shown in FIG. 9, the downlink control information size alignment method can include the following steps S901 to S905.

[0139] In step S901, it is determined that the sizes of DCIs (for example, a plurality of legacy DCIs such as DCI format 0_1 and DCI format 1_1) for scheduling data of a single cell are aligned according to a predefined mechanism.

[0140] In step S902, the size of the DCI for scheduling data of a single cell in the cell for transmitting the DCI and the size of the DCI for scheduling data of a plurality of cells are determined.

[0141] In step S903, when the number of DCI size types is greater than a preset threshold, candidate DCIs are determined from the DCIs for scheduling data of a single cell.

[0142] In step S904, a target DCI is determined from the candidate DCIs.

[0143] In step S905, it is determined that the size of the target DCI is aligned with the size of the DCI for scheduling data of a plurality of cells.

[0144] In one embodiment, the DCI for scheduling data of a single cell may be a legacy DCI. For example, the DCI for scheduling data of a single cell includes at least one of DCI format 0_0, DCI format 1_0, DCI format 0_1, DCI format 1_1, DCI format 0_2, and DCI format 1_2, but is not limited thereto.

[0145] The predefined mechanism may make the best use of existing mechanisms such as the Sec 7.3.1 TS38.212 [1] mechanism.

[0146] In one embodiment, the DCI for scheduling data of a plurality of cells may be provided to be different from the format of the DCI for scheduling data of a single cell, or may be provided to be the same as the format of the DCI for scheduling data of a single cell. Hereinafter, when the DCI for scheduling data of a plurality of cells and the format of the DCI for scheduling data of a single cell are different, the technical solution of the present disclosure will be exemplarily described.

[0147] In the prior art, generally only the DCI for scheduling data of a single cell is included. Therefore, after newly adding the DCI for scheduling data of a plurality of cells, the size of the DCI for scheduling data of a plurality of cells and the size of the DCI for scheduling data of a single cell may be different. According to the predefined mechanism, after determining that the size of the DCI for scheduling data of a single cell is aligned, the number of DCI size types in the serving cell (for example, the cell where the terminal receives the DCI for scheduling data of a plurality of cells and the DCI for scheduling data of a single cell) may still be too large, for example, larger than a preset threshold, which increases the complexity of the terminal blindly detecting the DCI.

[0148] According to an embodiment of the present disclosure, when the number of DCI size types in a serving cell is greater than a preset threshold, candidate DCI (for example, one or more types of DCI) is determined from the DCI for scheduling the data of a single cell, and further a target DCI (for example, one type of DCI) is determined from the candidate DCI, and it can be determined that the size of the target DCI is aligned with the size of the DCI for scheduling the data of multiple cells. Thereby, the number of DCI size types received by a terminal in a serving cell can be reduced, which is advantageous for reducing the complexity of the terminal blindly detecting the DCI.

[0149] FIG. 10 is a schematic flowchart of another downlink control information size alignment method shown according to an embodiment of the present disclosure. As shown in FIG. 10, the downlink control information size alignment method may include the following steps.

[0150] In step C1, align the size of DCI format 0_0 and the size of DCI format 1_0 in CSS, which can be translated as DCI size alignment of DCI format 0_0 and DCI format 1_0 in CSS.

[0151] In step C2, align the size of DCI format 0_0 and the size of DCI format 1_0 in USS, which can be translated as DCI size alignment of DCI format 0_0 and DCI format 1_0 in USS.

[0152] In step C3, perform a non-fallback DCI operation. For example, align the size of DCI format 0_1 corresponding to the supplementary uplink SUL and the size of DCI format 0_1 corresponding to non-SUL, which can be translated as DCI size alignment of format 0_1 SUL / non SUL.

[0153] In step C4, perform a DCI operation corresponding to URLLC. For example, align the size of DCI format 0_2 corresponding to supplementary uplink SUL and the size of DCI format 0_2 corresponding to non-SUL, which can be translated as DCI size alignment of format 0_2 SUL / non SUL.

[0154] In C5, determine whether the legacy DCI satisfies the first preset condition: whether the number of size types of legacy DCI scrambled by C-RNTI for the terminal in the serving cell is 3 or less, and whether the number of legacy DCI size types set for the terminal in the serving cell is 4 or less. If the first preset condition is satisfied, step C9 can be entered; if the first preset condition is not satisfied, proceed to the next step (step C6).

[0155] In steps C6 and C7, it is possible to determine again whether the legacy DCI satisfies the first preset condition: whether the number of size types of legacy DCI scrambled by C-RNTI for the terminal in the serving cell is 3 or less, and whether the number of legacy DCI size types set for the terminal in the serving cell is 4 or less. If the above first preset condition is satisfied, proceed to step C9; if the above first preset condition is not satisfied, proceed to the next step. For the sake of simplicity, it is only shown in the figure and the description of the text part is omitted.

[0156] In step C6, the alignment operation of the size of DCI format 0_0 / 1_0 in USS and the size of DCI format 0_0 / 1_0 in CSS, the specific alignment operation is the same as that in step A6 described above, and the description is omitted here.

[0157] Step C6 can be translated as "DCI size alignment of DCI format 0_0 / 1_0 in USS and DCI format 0_0 / 1_0 in CSS".

[0158] In step C7, align the size of DCI format 0_2 and the size of DCI format 1_2, which can be translated as "DCI size alignment of DCI format 0_2 / 1_2".

[0159] In step C8, align the size of DCI format 0_1 and the size of DCI format 1_1, which can be translated as "DCI size alignment of DCI format 0_1 / 1_1", and then proceed to C9.

[0160] In step C9, determine whether the total number of types of sizes of legacy DCI and DCI for scheduling data of multiple cells meets a first preset condition: whether the total number of types of sizes of legacy DCI scrambled by C-RNTI for the terminal in the serving cell and DCI for scheduling data of multiple cells is 3 or less, and whether the number of types of sizes of legacy DCI set for the terminal in the serving cell and DCI for scheduling data of multiple cells is 4 or less. If the first preset condition is met, end the alignment process; if the first preset condition is not met, proceed to the next step (step C10).

[0161] In step C10, determine candidate DCIs from the DCIs for scheduling data of a single cell, determine target DCIs from the candidate DCIs, align the size of the target DCI and the size of the DCI for scheduling data of multiple cells, and then the DCI alignment process can be ended.

[0162] Also, in the embodiment shown in FIG. 10, for the step of determining whether the first preset condition is satisfied, it can be adjusted to determine whether the second preset condition is satisfied as necessary. In this case, it can be ensured that the requirement of "4 + 1" is satisfied.

[0163] In one embodiment, the step of determining the target DCI from the candidate DCIs includes the step of determining that the DCI with the largest size among the candidate DCIs is the target DCI. Among the DCIs for scheduling the data of the single cell, the DCIs with a size smaller than the size of the DCI for scheduling the data of multiple cells are the candidate DCIs. For example, step C9 above is: aligning the DCI with the largest size (target DCI) among the DCIs smaller than the DCI format 0_3 / DCI format 1_3 size (candidate DCIs) with the DCI format 0_3 / DCI format 1_3 by means such as zero-padding and / or adding reserved bits.

[0164] It can be determined that the DCIs with a size smaller than the size of the DCI for scheduling the data of multiple cells among the DCIs for scheduling the data of a single cell are the candidate DCIs, and further, it can be determined that the DCI with the largest size among the candidate DCIs is the target DCI. Since the target DCI is the DCI with the largest size among the candidate DCIs and is closest to the size of the DCI for scheduling the data of multiple cells, the size of the target DCI and the size of the DCI for scheduling the data of multiple cells are aligned, and the bits that need to be supplemented for the target DCI are relatively few, and the impact on the PDCCH transmission performance after alignment is relatively small.

[0165] In one embodiment, the step of determining the target DCI from among the candidate DCIs includes determining that the DCI with the smallest size among the candidate DCIs is the target DCI, and among the DCIs for scheduling the data of the single cell, a DCI with a size larger than the size of the DCI for scheduling the data of multiple cells is the candidate DCI. For example, step C9 above is to align the DCI format 0_3 / DCI format 1_3 with the DCI (target DCI) having the smallest size among the DCIs (candidate DCIs) larger than the DCI format 0_3 / DCI format 1_3 size by means of zero-padding and / or adding reserved bits.

[0166] It can be determined that a DCI with a size larger than the size of the DCI for scheduling the data of multiple cells is the candidate DCI from among the DCIs for scheduling the data of a single cell, and further, it can be determined that the DCI with the smallest size among the candidate DCIs is the target DCI. Since the target DCI is the DCI with the smallest size among the candidate DCIs and is closest to the size of the DCI for scheduling the data of multiple cells, it is determined that the size of the target DCI is aligned with the size of the DCI for scheduling the data of multiple cells, and the number of bits that need to be supplemented for the DCI for scheduling the data of multiple cells is relatively small, and the impact on the PDCCH transmission performance after alignment is relatively small.

[0167] In one embodiment, the DCI for scheduling data of a plurality of cells may include a first DCI for scheduling uplink data of a plurality of cells and a second DCI for scheduling downlink data of a plurality of cells. For example, the DCI for scheduling data of a plurality of cells can be provided to include DCI format 0_3 and / or DCI format 1_3. The first DCI is DCI format 0_3 and is used to schedule uplink data of a plurality of cells, and the second DCI is DCI format 1_3 and is used to schedule downlink data of a plurality of cells.

[0168] Note that in some cases, the DCI for scheduling data of a plurality of cells can also be provided to schedule data of a single cell. The format of the first DCI and the format of the second DCI may be the same or different. Hereinafter, an exemplary description will be given mainly when the format of the first DCI and the format of the second DCI are different.

[0169] In one embodiment, the method determines that the size of the first DCI and the size of the second DCI are aligned before determining that the size of the target DCI and the size of the DCI for scheduling data of a plurality of cells are aligned.

[0170] In one embodiment, before determining the size of the DCI for scheduling data of a single cell in the cell for transmitting the DCI and the size of the DCI for scheduling data of a plurality of cells, if the sizes of the first DCI and the second DCI are different and do not meet the above-mentioned first preset condition, it is possible to first determine that the sizes of the first DCI and the second DCI are aligned.

[0171] If the sizes of the first DCI and the second DCI are different and do not meet the above first preset condition, before aligning the size of the target DCI with the size of the DCI for scheduling data of a plurality of cells, it is determined that the sizes of the first DCI and the second DCI are aligned. Since the sizes of the first DCI and the second DCI are generally close, relatively few supplementary bits are required to determine that they are aligned. After aligning the first DCI and the second DCI, if the first preset condition or the second preset condition is met, it is not necessary to align the size of the subsequent target DCI with the size of the DCI of the data of the plurality of cells, so as to further reduce the impact on PDCCH transmission.

[0172] Therefore, it can be determined in advance that the sizes of the first DCI and the second DCI are aligned. As a result, regardless of whether it is determined that the size of the target DCI is aligned with the size of the first DCI or the size of the second DCI, the effect is the same. It not only reduces the number of DCI size types, but also simplifies the process of determining that the size of the target DCI is aligned with the size of the DCI for scheduling data of a plurality of cells.

[0173] In one embodiment, the method further includes a step of not desiring that the number of DCI size types received in the serving cell is more than 4, and a step of not desiring that the number of DCI size types scrambled by a cell radio network temporary identifier (C-RNTI) received in the serving cell is more than 3.

[0174] Through the alignment operation in the above embodiments, it is ensured that the number of size types of DCI received by the terminal in this serving cell is not more than 4 types (that is, 4 types or less), and the number of size types of DCI scrambled by the C-RNTI received by the terminal in this serving cell is not more than 3 types (that is, 3 types or less). Accordingly, when the terminal blindly detects DCI in the serving cell, it can blindly detect according to the case where the size of DCI is 4 types or less and the size of DCI scrambled by C-RNTI is 3 types or less. This meets the "3 + 1" requirement and reduces the complexity of the terminal's blind detection.

[0175] In all embodiments of the present disclosure, the network device can provide a specific indication field for indicating the type of DCI in different DCIs. For example, it indicates that the DCI is a DCI for scheduling data of a single cell (for example, legacy DCI), or a newly added DCI (for example, DCI format 0_3, DCI format 1_3).

[0176] The network device can also scramble different DCIs with different RNTIs. For example, it scrambles the DCI for scheduling data of a single cell with C-RNTI, and can scramble the DCI for scheduling data of multiple cells with a newly defined RNTI (for example, MCS-RNTI (multi-carrier scheduling-RNTI), which can be called multi-cell scheduling RNTI), or an RNTI other than C-RNTI (for example, CS-RNTI, SP-CSI-RNTI, MCS-C-RNTI).

[0177] Accordingly, the terminal can distinguish DCI by the RNTI that scrambles the DCI. For example, when it is determined that the RNTI that scrambles the DCI is the C-RNTI, it can be determined that the DCI scrambled by the C-RNTI is the DCI for scheduling the data of a single cell. For example, when it is determined that the RNTI that scrambles the DCI is the MCS-RNTI, it can be determined that the DCI scrambled by the MCS-RNTI is the DCI for scheduling the data of multiple cells.

[0178] In one embodiment, the method includes: when at least one PDCCH candidate corresponding to the first USS's DCI format 0_2 and the second USS's DCI format 0_3 is mapped to the same resource, the terminal desires that the DCI lengths of the DCI format 0_2 corresponding to the first USS and the DCI format 0_3 are not the same; and when at least one PDCCH candidate among the DCI format 1_2 corresponding to the first USS and the DCI format 1_3 corresponding to the second USS is mapped to the same resource, the terminal desires that the DCI lengths of the DCI format 1_2 corresponding to the first USS and the DCI format 1_3 are not the same.

[0179] This embodiment proposes some alignment methods for the downlink control information size. The alignment method for the downlink control information size can be applied to a network device. The terminal includes, but is not limited to, communication devices such as mobile phones, tablets, wearable devices, sensors, and Internet of Things devices. The terminal can communicate with the network device, and the network device includes, but is not limited to, network devices in communication systems such as 4G, 5G, 6G, etc., such as base stations, core networks, etc.

[0180] FIG. 11 is a schematic flowchart of a downlink control information size alignment method shown by an embodiment of the present disclosure. As shown in FIG. 11, the downlink control information size alignment method can include the following step S1101.

[0181] In step S1101, align the size of downlink control information (DCI) for scheduling data of a plurality of cells with the size of DCI for scheduling data of a single cell.

[0182] In one embodiment, the DCI for scheduling data of a single cell may be legacy DCI. For example, the DCI for scheduling data of a single cell may include at least one of DCI format 0_0, DCI format 1_0, DCI format 0_1, DCI format 1_1, DCI format 0_2, and DCI format 1_2.

[0183] In one embodiment, the DCI for scheduling data of a plurality of cells may be provided to be different from the format of the legacy DCI for scheduling data of a single cell, or may be provided to be the same as the format of the legacy DCI for scheduling data of a single cell. Hereinafter, the technical solution of the present disclosure will be exemplarily described mainly when the DCI for scheduling data of a plurality of cells is different from the format of the legacy DCI for scheduling data of a single cell.

[0184] In one embodiment, the DCI for scheduling data of a plurality of cells may include a first DCI for scheduling uplink data of a plurality of cells and a second DCI for scheduling downlink data of a plurality of cells. For example, the DCI for scheduling data of a plurality of cells can be provided to include DCI format 0_3 and / or DCI format 1_3. The first DCI is DCI format 0_3 and is used to schedule uplink data of a plurality of cells, and the second DCI is DCI format 1_3 and is used to schedule downlink data of a plurality of cells.

[0185] Note that in some cases, the DCI for scheduling data of a plurality of cells can also be used to schedule data of a single cell. The format of the first DCI and the format of the second DCI may be the same or different. Hereinafter, an exemplary description will be given mainly when the format of the first DCI and the format of the second DCI are different.

[0186] In the prior art, generally only the DCI for scheduling data of a single cell is included. Therefore, after newly adding the DCI for scheduling data of a plurality of cells, the size of the DCI for scheduling data of a plurality of cells and the size of the DCI for scheduling data of a single cell may be different. As a result, the number of types of DCI sizes received by the terminal in the serving cell (for example, the cell in which the terminal receives the DCI for scheduling data of a plurality of cells and the DCI for scheduling data of a single cell) increases, and the complexity of the terminal blindly detecting the DCI increases.

[0187] According to an embodiment of the present disclosure, a network device can align the size of DCI for scheduling data of multiple cells with the size of DCI for scheduling data of a single cell, thereby reducing the number of types of DCI sizes received by a terminal in a serving cell when transmitting DCI to the terminal, and facilitating reducing the complexity of blind detection of DCI by the terminal.

[0188] In one embodiment, the specific execution steps of the downlink control information size alignment method are as shown in FIG. 2, and the description of the steps is omitted here.

[0189] In one embodiment, the method further includes aligning the size of the first DCI with the size of the second DCI before aligning the size of DCI for scheduling data of multiple cells with the size of DCI for scheduling data of a single cell.

[0190] Before aligning the size of DCI for scheduling data of multiple cells with the size of DCI for scheduling data of a single cell, if the sizes of the first DCI and the second DCI are different, the size of the first DCI and the size of the second DCI can be aligned first.

[0191] After aligning the size of the first DCI with the size of the second DCI, it is possible to determine whether the first preset condition is satisfied. If the first preset condition is satisfied, there is no need to perform subsequent alignment operations. For example, there is no need to align the size of DCI for scheduling data of multiple cells with the size of DCI for scheduling data of a single cell. If the first preset condition is not satisfied, subsequent alignment operations can continue to be performed. For example, the size of DCI for scheduling data of multiple cells can be aligned with the size of DCI for scheduling data of a single cell.

[0192] In one embodiment, the step of aligning the size of the first DCI and the size of the second DCI includes the step of aligning the size of DCI format 0_1 and the size of DCI format 1_1, and then aligning the size of the first DCI and the size of the second DCI.

[0193] Since the sizes of the first DCI and / or the second DCI, for example, DCI format 0_3 and / or DCI format 1_3, are relatively large (i.e., the number of occupied bits is relatively large), to align the size of DCI format 0_3 and the size of DCI format 1_3, a relatively large number of bits need to be supplemented (for example, supplement DCI format 0_3 or supplement DCI format 1_3). On the other hand, a large number of communication resources are occupied by a large number of bits, and the transmission efficiency of the PDCCH (Physical Downlink Control Channel) where the DCI is located decreases.

[0194] In this example, first align the size of DCI format 0_1 and the size of DCI format 1_1, and then align the size of DCI format 0_3 and the size of DCI format 1_3.

[0195] After aligning the size of DCI format 0_1 and the size of DCI format 1_1, it is necessary to determine whether the above-mentioned first preset condition is satisfied. Therefore, when the above-mentioned first preset condition is satisfied, the alignment process can be terminated, and there is no need to further align the size of DCI format 0_3 and the size of DCI format 1_3. On the other hand, when the above-mentioned first preset condition is not satisfied, further align the size of DCI format 0_3 and the size of DCI format 1_3.

[0196] That is, after aligning the sizes of DCI format 0_1 and DCI format 1_1, it may not be necessary to align the sizes of DCI format 0_3 and DCI format 1_3. Therefore, to some extent, the problem of reduced PDCCH transmission efficiency due to the large number of supplementary bits can be alleviated.

[0197] In one embodiment, the step of aligning the size of the first DCI and the size of the second DCI includes the step of aligning the size of the first DCI and the size of the second DCI before aligning the size of DCI format 0_2 and the size of DCI format 1_2.

[0198] Since the first DCI and the second DCI, for example, DCI format 0_3 and / or DCI format 1_3, are DCIs for scheduling data of multiple cells, they belong to a newly added DCI format with respect to the DCI for scheduling data of a single cell, and the impact on the legacy DCI format is reduced as much as possible. For example, the impact on DCI format 0_2, DCI format 1_2, DCI format 0_1, and DCI format 1_1 is reduced.

[0199] In this embodiment, after aligning the size of DCI format 0_2 and the size of DCI format 1_2, the size of DCI format 0_3 and the size of DCI format 1_3 can be aligned.

[0200] After aligning the size of DCI format 0_3 and the size of DCI format 1_3, it is necessary to determine whether the first preset condition is satisfied. Therefore, when the first preset condition is satisfied, the alignment process ends and there is no need to further align the size of DCI format 0_2 and the size of DCI format 1_2. On the other hand, when the first preset condition is not satisfied, the size of DCI format 0_2 and the size of DCI format 1_2 are further aligned.

[0201] That is, it is possible that the size of DCI format 0_3 and the size of DCI format 1_3 are aligned first, and there is no need to further align the size of DCI format 0_2 and the size of DCI format 1_2, thereby reducing the impact on legacy DCI formats such as DCI format 0_2 and DCI format 1_2.

[0202] According to the embodiments of the present disclosure, it can be ensured that the number of size types of DCI transmitted by the network device to the terminal in the serving cell is 4 or less, and the number of size types of DCI scrambled by the C-RNTI transmitted by the network device to the terminal in the serving cell is 3 or less. Thus, when the terminal blindly detects DCI in the serving cell, it can blindly detect according to the case where the size of DCI is 4 or less and the size of DCI scrambled by the C-RNTI is 3 or less, thereby meeting the "3 + 1" requirement and reducing the complexity of the terminal's blind detection.

[0203] In one embodiment, when at least one PDCCH candidate corresponding to a first USS and having a DCI format 0_2 and at least one PDCCH candidate corresponding to a second USS and having a DCI format 0_3 are mapped to the same resource, the network can be configured such that the DCI size of the DCI format 0_2 corresponding to the first USS is different from the DCI size of the DCI format 0_3; and when at least one PDCCH candidate corresponding to a first USS and having a DCI format 1_2 and at least one PDCCH candidate corresponding to a second USS and having a DCI format 1_3 are mapped to the same resource, the network can be configured such that the DCI size of the DCI format 1_2 corresponding to the first USS is different from the DCI size of the DCI format 1_3.

[0204] FIG. 12 is a schematic flowchart of a downlink control information size alignment method according to an embodiment of the present disclosure. As shown in FIG. 12, the downlink control information size alignment method may include the following step S1201.

[0205] In step S1201, the size of a first downlink control information (DCI) for scheduling uplink data of a plurality of cells is aligned with the size of a second DCI for scheduling downlink data of the plurality of cells.

[0206] In one embodiment, the DCI for scheduling data of a single cell may be legacy DCI. For example, the DCI for scheduling data of a single cell may include at least one of DCI format 0_0, DCI format 1_0, DCI format 0_1, DCI format 1_1, DCI format 0_2, and DCI format 1_2.

[0207] Note that legacy DCI includes, but is not limited to, DCI such as DCI format 0_1, DCI format 1_1, DCI format 0_2, DCI format 1_2, DCI format 0_0, and DCI format 1_0.

[0208] In one embodiment, the DCI for scheduling data of a plurality of cells may be provided to be different from the format of the legacy DCI for scheduling data of a single cell, or may be provided to be the same as the format of the legacy DCI for scheduling data of a single cell. Hereinafter, the technical solution of the present disclosure will be exemplarily described mainly when the DCI for scheduling data of a plurality of cells is different from the format of the legacy DCI for scheduling data of a single cell.

[0209] In one embodiment, the DCI for scheduling data of a plurality of cells may include a first DCI for scheduling uplink data of a plurality of cells and a second DCI for scheduling downlink data of a plurality of cells. For example, the DCI for scheduling data of a plurality of cells may be provided to include DCI format 0_3 and / or DCI format 1_3. The first DCI is DCI format 0_3 and is used for scheduling uplink data of a plurality of cells, and the second DCI is DCI format 1_3 and is used for scheduling downlink data of a plurality of cells.

[0210] In the prior art, generally only DCI for scheduling data of a single cell is included. Therefore, after newly adding a first DCI for scheduling uplink data of multiple cells and a second DCI for scheduling downlink data of multiple cells, the size of the first DCI and the size of the second DCI may be different. As a result, the number of size types of DCI received by the terminal in the serving cell (for example, the cell that transmits DCI for scheduling data of multiple cells and DCI for scheduling data of a single cell) increases, and thereby the complexity for the terminal to blindly detect DCI increases.

[0211] According to an embodiment of the present disclosure, the network device can align the size of a first DCI for scheduling uplink data of multiple cells and the size of a second DCI for scheduling downlink data of multiple cells. Thereby, when transmitting DCI to the terminal in the serving cell, the number of size types of DCI received by the terminal in the serving cell can be reduced, which is advantageous for reducing the complexity for the terminal to blindly detect DCI.

[0212] In one embodiment, the step of aligning the size of the first DCI and the size of the second DCI includes the step of aligning the size of DCI format 0_1 and the size of DCI format 1_1, and then aligning the size of the first DCI and the size of the second DCI. The specific alignment process can be shown in FIG. 7, and the description is omitted here.

[0213] Since the sizes of the first DCI and / or the second DCI, e.g., DCI format 0_3 and / or DCI format 1_3, are relatively large (i.e., the number of bits occupied is relatively large), to align the size of DCI format 0_3 and the size of DCI format 1_3, a relatively large number of bits need to be supplemented (e.g., supplement DCI format 0_3 or supplement DCI format 1_3). On the other hand, a large number of communication resources are occupied by a large number of bits, and the transmission efficiency of the PDCCH where the DCI is located decreases.

[0214] In this embodiment, first, the sizes of DCI format 0_1 and DCI format 1_1 are aligned, and then the sizes of DCI format 0_3 and DCI format 1_3 are aligned.

[0215] After aligning the sizes of DCI format 0_1 and DCI format 1_1, it is necessary to determine the first preset condition. When the first preset condition is met, the alignment process ends. Thus, it is not necessary to further align the sizes of DCI format 0_3 and DCI format 1_3. On the other hand, when the first preset condition is not met, the sizes of DCI format 0_3 and DCI format 1_3 are further aligned.

[0216] That is, since the sizes of DCI format 0_1 and DCI format 1_1 are first aligned and it may not be necessary to align the sizes of DCI format 0_3 and DCI format 1_3, the problem that the PDCCH transmission efficiency decreases due to the large number of supplemented bits can be alleviated to a certain extent.

[0217] In one embodiment, aligning the size of the first DCI and the size of the second DCI includes aligning the size of the first DCI and the size of the second DCI before aligning the size of DCI format 0_2 and the size of DCI format 1_2. The specific alignment process can be shown in FIG. 8 and will not be described here.

[0218] In one embodiment, since the first DCI and the second DCI, for example, DCI format 0_3 and / or DCI format 1_3, are DCIs for scheduling data of a plurality of cells, they belong to a newly added DCI format with respect to a DCI for scheduling data of a single cell, and the influence on the legacy DCI format is reduced as much as possible. For example, the influence on DCI format 0_2, DCI format 1_2, DCI format 0_1, and DCI format 1_1 is reduced.

[0219] In this embodiment, after aligning the size of DCI format 0_2 and the size of DCI format 1_2, the size of DCI format 0_3 and the size of DCI format 1_3 can be aligned.

[0220] After aligning the size of DCI format 0_3 and the size of DCI format 1_3, it is necessary to determine whether the first preset condition is satisfied. When the first preset condition is satisfied, the alignment process ends, and it is no longer necessary to align the size of DCI format 0_2 and the size of DCI format 1_2. On the other hand, when the first preset condition is not satisfied, the size of DCI format 0_2 and the size of DCI format 1_2 are further aligned.

[0221] That is, it may not be necessary to align the size of DCI format 0_3 and the size of DCI format 1_3 first, and further align the size of DCI format 0_2 and the size of DCI format 1_2, thereby reducing the impact on legacy DCI formats such as DCI format 0_2 and DCI format 1_2.

[0222] According to an embodiment of the present disclosure, it can be ensured that the number of size types of DCI transmitted by a network device to a terminal in a serving cell is not greater than 5 (that is, 5 or less), and the number of size types of DCI scrambled by an RNTI transmitted by the network device to the terminal in the serving cell is not greater than 4 (that is, 4 or less). Thus, when the terminal blindly detects DCI in the serving cell, it can blindly detect according to the case where the size of DCI is 5 or less and the size of DCI scrambled by the RNTI is 4 or less, thereby meeting the "4 + 1" requirement and reducing the complexity of blind detection of the terminal.

[0223] In one embodiment, the method includes When at least one PDCCH candidate corresponding to DCI format 0_2 corresponding to the first USS and DCI format 0_3 corresponding to the second USS is mapped to the same resource, the network can be provided such that the DCI size of DCI format 0_2 corresponding to the first USS is different from the DCI size of DCI format 0_3; and when at least one PDCCH candidate of DCI format 1_2 corresponding to the first USS and DCI format 1_3 corresponding to the second USS is mapped to the same resource, the network can be provided such that the DCI size of DCI format 1_2 corresponding to the first USS is different from the DCI size of DCI format 1_3.

[0224] FIG. 13 is a schematic flowchart of a downlink control information size alignment method shown by an embodiment of the present disclosure. As shown in FIG. 13, the downlink control information size alignment method can include the following steps S1301 to S1305.

[0225] In step S1301, according to a predefined mechanism, align the sizes of DCIs (for example, a plurality of legacy DCIs such as DCI format 0_1 and DCI format 1_1) for scheduling the data of a single cell.

[0226] In step S1302, determine the size of the DCI for scheduling the data of a single cell in the cell for transmitting the DCI and the size of the DCI for scheduling the data of a plurality of cells.

[0227] In step S1303, when the number of DCI size types is greater than a preset threshold, determine candidate DCIs from the DCIs for scheduling the data of a single cell.

[0228] In step S1304, determine a target DCI from the candidate DCIs.

[0229] In step S1305, align the size of the target DCI and the size of the DCI for scheduling the data of a plurality of cells.

[0230] In one embodiment, the DCI for scheduling the data of a single cell may be a legacy DCI. For example, the DCI for scheduling the data of a single cell may include at least one of DCI format 0_0, DCI format 1_0, DCI format 0_1, DCI format 1_1, DCI format 0_2, and DCI format 1_2, but is not limited thereto.

[0231] The predefined mechanism may make the best use of existing mechanisms such as the mechanism in Sec 7.3.1 TS38.212 [1].

[0232] In one embodiment, the DCI for scheduling data of a plurality of cells may be provided to be different from the format of the DCI for scheduling data of a single cell, or may be provided to be the same as the format of the DCI for scheduling data of a single cell. Hereinafter, when the DCI for scheduling data of a plurality of cells and the format of the DCI for scheduling data of a single cell are different, the technical solution of the present disclosure will be exemplarily described.

[0233] In the prior art, generally only the DCI for scheduling data of a single cell is included. Therefore, after newly adding the DCI for scheduling data of a plurality of cells, the size of the DCI for scheduling data of a plurality of cells and the size of the DCI for scheduling data of a single cell may be different. According to the predefined mechanism, after aligning the size of the DCI for scheduling data of a single cell, the number of DCI size types in the serving cell (for example, the cell where the terminal receives the DCI for scheduling data of a plurality of cells and the DCI for scheduling data of a single cell) may still be too large, for example, larger than a preset threshold, which increases the complexity for the terminal to blindly detect the DCI.

[0234] According to an embodiment of the present disclosure, when the number of size types of DCI in a serving cell is greater than a preset threshold, a candidate DCI (for example, one or more types of DCI) is determined from the DCI for scheduling the data of a single cell, and further a target DCI (for example, one type of DCI) is determined from the candidate DCI, and the size of the target DCI can be aligned with the size of the DCI for scheduling the data of multiple cells. Thereby, when the network device transmits DCI to the terminal in the serving cell, the number of size types of DCI received by the terminal in the serving cell can be reduced, which is advantageous for reducing the complexity of blind detection of DCI by the terminal.

[0235] The specific execution steps of the downlink control information size alignment method shown by the embodiment of the present disclosure can be shown in FIG. 10, and the description is omitted here.

[0236] In one embodiment, the step of determining a target DCI from the candidate DCIs includes determining that the DCI with the largest size among the candidate DCIs is the target DCI, and among the DCIs for scheduling the data of the single cell, the DCIs with a size smaller than the size of the DCI for scheduling the data of multiple cells are the candidate DCIs.

[0237] Among the DCIs for scheduling the data of a single cell, a DCI smaller than the DCI for scheduling the data of multiple cells can be determined as the candidate DCI, and further, the DCI with the largest size among the candidate DCIs can be determined as the target DCI. Since the target DCI is the DCI with the largest size among the candidate DCIs and is closest to the size of the DCI for scheduling the data of multiple cells, the size of the target DCI and the size of the DCI for scheduling the data of multiple cells are aligned, and the bits that need to be supplemented for the target DCI are relatively few, and the impact on the PDCCH transmission performance after alignment is relatively small.

[0238] In one embodiment, the step of determining the target DCI from the candidate DCIs includes the step of determining that the DCI with the smallest size among the candidate DCIs is the target DCI, and among the DCIs for scheduling the data of the single cell, a DCI larger than the size of the DCI for scheduling the data of multiple cells is the candidate DCI.

[0239] Among the DCIs for scheduling the data of a single cell, a DCI larger than the DCI for scheduling the data of multiple cells can be determined as the candidate DCI, and further, the DCI with the smallest size among the candidate DCIs can be determined as the target DCI. Since the target DCI is the DCI with the smallest size among the candidate DCIs and is closest to the size of the DCI for scheduling the data of multiple cells, the size of the target DCI and the size of the DCI for scheduling the data of multiple cells are aligned, and the bits that need to be supplemented for the DCI for scheduling the data of multiple cells are relatively few, and the impact on the PDCCH transmission performance after alignment is relatively small.

[0240] In one embodiment, the DCI for scheduling data of a plurality of cells includes a first DCI for scheduling uplink data of a plurality of cells and a second DCI for scheduling downlink data of a plurality of cells. For example, the DCI for scheduling data of a plurality of cells can be provided to include DCI format 0_3 and / or DCI format 1_3, the first DCI is DCI format 0_3 and is used for scheduling uplink data of a plurality of cells, and the second DCI is DCI format 1_3 and is used for scheduling downlink data of a plurality of cells.

[0241] In one embodiment, the method further includes the step of aligning the size of the first DCI and the size of the second DCI before aligning the size of the target DCI and the size of the DCI for scheduling data of a plurality of cells.

[0242] In one embodiment, before determining the size of the DCI for scheduling data of a single cell in the cell for transmitting the DCI and the size of the DCI for scheduling data of a plurality of cells, if the sizes of the first DCI and the second DCI are different and do not meet the above preset condition, the sizes of the first DCI and the second DCI can be aligned first.

[0243] When the sizes of the first DCI and the second DCI are different and do not meet the above first preset condition, before aligning the size of the target DCI with the size of the DCI for scheduling data of multiple cells, align the sizes of the first DCI and the second DCI. Since the sizes of the first DCI and the second DCI are generally close, the supplementary bits required to align them are relatively few. After aligning the first DCI and the second DCI, if the first preset condition or the second preset condition is met, it is not necessary to align the size of the subsequent target DCI with the size of the DCI of the data of multiple cells, so as to further reduce the impact on PDCCH transmission.

[0244] Therefore, it can be determined first that the sizes of the first DCI and the second DCI are aligned. Thus, regardless of whether the size of the target DCI is aligned with the size of the first DCI or the size of the second DCI, the effect is the same. It can not only reduce the number of DCI size types, but also simplify the process of aligning the size of the target DCI with the size of the DCI for scheduling data of multiple cells.

[0245] According to the embodiments of the present disclosure, it can be ensured that the number of DCI size types transmitted by the network device to the terminal in the serving cell is 4 or less, and the number of DCI size types scrambled by the C-RNTI transmitted by the network device to the terminal in the serving cell is 3 or less. Thus, when the terminal blindly detects the DCI in the serving cell, it can blindly detect according to the case where the DCI size is 4 or less and the DCI size scrambled by the C-RNTI is 3 or less. This meets the "3 + 1" requirement and reduces the complexity of the terminal's blind detection.

[0246] In one embodiment, when at least one PDCCH candidate corresponding to a first USS's DCI format 0_2 and a second USS's DCI format 0_3 is mapped to the same resource, the network can be provided such that the DCI size of the DCI format 0_2 corresponding to the first USS is different from the DCI size of the DCI format 0_3; and when at least one PDCCH candidate among a DCI format 1_2 corresponding to a first USS and a DCI format 1_3 corresponding to a second USS is mapped to the same resource, the network can be provided such that the DCI size of the DCI format 1_2 corresponding to the first USS is different from the DCI size of the DCI format 1_3.

[0247] Corresponding to the embodiments of the above downlink control information size alignment method, the present disclosure further provides embodiments of a downlink control information size alignment apparatus.

[0248] This embodiment proposes several alignment apparatuses for downlink control information sizes. The alignment apparatus for downlink control information sizes can be applied to a terminal, and the terminal includes, but is not limited to, communication devices such as mobile phones, tablets, wearable devices, sensors, and Internet of Things devices. The terminal can communicate with a network device, and the network device includes, but is not limited to, network devices in communication systems such as 4G, 5G, 6G, etc., for example, base stations, core networks, etc.

[0249] FIG. 14 is a schematic block diagram of a downlink control information size alignment apparatus according to an embodiment of the present disclosure. As shown in FIG. 14, the downlink control information size alignment apparatus may include a processing module 1401 configured to determine that the size of downlink control information (DCI) for scheduling data of a plurality of cells is aligned with the size of DCI for scheduling data of a single cell.

[0250] In one embodiment, the DCI for scheduling data of a plurality of cells includes a first DCI for scheduling uplink data of a plurality of cells and a second DCI for scheduling downlink data of a plurality of cells.

[0251] In one embodiment, before determining that the size of the DCI for scheduling data of a plurality of cells is aligned with the size of the DCI for scheduling data of a single cell, the processing module is further configured to determine that the size of the first DCI is aligned with the size of the second DCI.

[0252] In one embodiment, after determining that the size of DCI format 0_1 is aligned with the size of DCI format 1_1, the processing module is configured to determine that the size of the first DCI is aligned with the size of the second DCI.

[0253] In one embodiment, before determining that the size of DCI format 0_2 is aligned with the size of DCI format 1_2, the processing module is configured to determine that the size of the first DCI is aligned with the size of the second DCI.

[0254] In one embodiment, the processing module is configured not to require that the number of DCI size types received in the serving cell is greater than four, and not to desire that the number of DCI size types scrambled by the cell radio network temporary identifier (C-RNTI) received in the serving cell is greater than three.

[0255] FIG. 15 is a schematic block diagram of a downlink control information size alignment apparatus according to an embodiment of the present disclosure. As shown in FIG. 15, the downlink control information size alignment apparatus can include a processing module 1501 configured to determine that the size of a first downlink control information (DCI) for scheduling uplink data of a plurality of cells is aligned with the size of a second DCI for scheduling downlink data of the plurality of cells.

[0256] In one embodiment, after determining that the sizes of DCI format 0_1 and DCI format 1_1 are aligned, the processing module is configured to determine that the size of the first DCI is aligned with the size of the second DCI.

[0257] In one embodiment, the processing module is configured to determine that the size of the first DCI is aligned with the size of the second DCI before determining that the sizes of DCI format 0_2 and DCI format 1_2 are aligned.

[0258] In one embodiment, the processing module is configured not to require that the number of DCI size types received in the serving cell is greater than five, and not to desire that the number of DCI size types scrambled by the radio network temporary identifier (RNTI) received in the serving cell is greater than four.

[0259] FIG. 16 is a schematic block diagram of a downlink control information size alignment apparatus according to an embodiment of the present disclosure. As shown in FIG. 16, the downlink control information size alignment apparatus determines that the size of DCI for scheduling data of a single cell is aligned according to a predefined mechanism, determines the size of DCI for scheduling data of a single cell in a cell for transmitting DCI and the size of DCI for scheduling data of multiple cells, and when the number of size types of the DCI is greater than a preset threshold, determines candidate DCI from the DCI for scheduling data of a single cell, determines target DCI from the candidate DCI, and is configured to determine that the size of the target DCI is aligned with the size of DCI for scheduling data of multiple cells, and may include a processing module 1601.

[0260] In one embodiment, the processing module is configured to determine that the DCI with the largest size among the candidate DCI is the target DCI, and among the DCI for scheduling data of the single cell, the DCI with a size smaller than the size of the DCI for scheduling data of multiple cells is the candidate DCI.

[0261] In one embodiment, the processing module is configured to determine that the DCI with the smallest size among the candidate DCI is the target DCI, and among the DCI for scheduling data of the single cell, the DCI with a size larger than the size of the DCI for scheduling data of multiple cells is the candidate DCI.

[0262] In one embodiment, the DCI for scheduling data of multiple cells includes a first DCI for scheduling uplink data of multiple cells and a second DCI for scheduling downlink data of multiple cells.

[0263] In one embodiment, before determining that the size of the target DCI is aligned with the size of the DCI for scheduling data of a plurality of cells, the processing module is configured to determine that the size of the first DCI is aligned with the size of the second DCI.

[0264] In one embodiment, the processing module is configured not to require that the number of DCI size types received in the serving cell is greater than four, and not to desire that the number of DCI size types scrambled by the cell radio network temporary identifier (C-RNTI) received in the serving cell is greater than three.

[0265] This embodiment proposes an apparatus for aligning several downlink control information sizes. The apparatus for aligning downlink control information sizes can be applied to a network device. The terminal includes, but is not limited to, communication devices such as mobile phones, tablets, wearable devices, sensors, and Internet of Things devices. The terminal can communicate with the network device. The network device includes, but is not limited to, network devices in communication systems such as 4G, 5G, and 6G, such as base stations and core networks.

[0266] FIG. 17 is a schematic block diagram of an apparatus for aligning downlink control information sizes according to an embodiment of the present disclosure. As shown in FIG. 17, the apparatus for aligning downlink control information sizes includes a processing module 1701 configured to align the size of the downlink control information (DCI) for scheduling data of a plurality of cells with the size of the DCI for scheduling data of a single cell.

[0267] In one embodiment, the DCI for scheduling data of a plurality of cells includes a first DCI for scheduling uplink data of a plurality of cells and a second DCI for scheduling downlink data of a plurality of cells.

[0268] In one embodiment, the apparatus processing module is configured to align the size of the first DCI and the size of the second DCI before aligning the size of the DCI for scheduling data of a plurality of cells and the size of the DCI for scheduling data of a single cell.

[0269] In one embodiment, the processing module is configured to align the size of the first DCI and the size of the second DCI after aligning the size of DCI format 0_1 and the size of DCI format 1_1.

[0270] In one embodiment, the processing module is configured to align the size of the first DCI and the size of the second DCI before aligning the size of DCI format 0_2 and the size of DCI format 1_2.

[0271] FIG. 18 is a schematic block diagram of a downlink control information size alignment apparatus according to an embodiment of the present disclosure. As shown in FIG. 18, the downlink control information size alignment apparatus can include a processing module 1801 configured to align the size of a first downlink control information (DCI) for scheduling uplink data of a plurality of cells and the size of a second DCI for scheduling downlink data of a plurality of cells.

[0272] In one embodiment, the processing module is configured to align the size of the first DCI and the size of the second DCI after aligning the size of DCI format 0_1 and the size of DCI format 1_1.

[0273] In one embodiment, the processing module is configured to align the size of the first DCI and the size of the second DCI before aligning the size of DCI format 0_2 and the size of DCI format 1_2.

[0274] FIG. 19 is a schematic block diagram of a downlink control information size alignment apparatus according to an embodiment of the present disclosure. As shown in FIG. 19, the downlink control information size alignment apparatus aligns the size of DCI for scheduling data of a single cell according to a predefined mechanism, and determines the size of DCI for scheduling data of a single cell in a cell for transmitting DCI and the size of DCI for scheduling data of multiple cells. When the number of DCI size types is greater than a preset threshold, a candidate DCI is determined from the DCIs for scheduling data of a single cell, a target DCI is determined from the candidate DCIs, and a processing module 1901 is configured to align the size of the target DCI and the size of DCI for scheduling data of multiple cells.

[0275] In one embodiment, the processing module is configured to determine that the DCI with the largest size among the candidate DCIs is the target DCI, and among the DCIs for scheduling data of a single cell, the DCIs with a size smaller than the size of the DCI for scheduling data of multiple cells are the candidate DCIs.

[0276] In one embodiment, the processing module is configured to determine that the DCI with the smallest size among the candidate DCIs is the target DCI, and among the DCIs for scheduling data of a single cell, the DCIs with a size larger than the size of the DCI for scheduling data of multiple cells are the candidate DCIs.

[0277] In one embodiment, the DCI for scheduling data of a plurality of cells includes a first DCI for scheduling uplink data of the plurality of cells and a second DCI for scheduling downlink data of the plurality of cells.

[0278] In one embodiment, the processing module is configured to align the size of the first DCI and the size of the second DCI before aligning the size of the target DCI and the size of the DCI for scheduling data of a plurality of cells.

[0279] Regarding the apparatus of the above embodiment, the specific manner of executing the operations of each module has been described in detail in the related method embodiment, and will not be described in detail here.

[0280] For the apparatus embodiment, since it basically corresponds to the method embodiment, related points may be described with reference to a part of the method embodiment. The apparatus embodiments described above are merely schematic. The modules described as separate components may or may not be physically separated. The components shown as modules may or may not be physical modules, that is, they may be located in one place or distributed among multiple network modules. According to actual needs, some or all of the modules can be selected to achieve the purpose of the solution of this embodiment. Those skilled in the art can understand and implement it without paying creative labor.

[0281] The embodiments of the present disclosure further provide a communication device including a processor and a memory for storing a computer program. When the computer program is executed by the processor, it realizes the downlink control information size alignment method applicable to the terminal described in any of the above embodiments.

[0282] Embodiments of the present disclosure provide a communication device including a processor and a memory for storing a computer program. When the computer program is executed by the processor, a downlink control information size alignment method applicable to the network device described in any of the above embodiments is realized.

[0283] Embodiments of the present disclosure provide a computer-readable storage medium for storing a computer program. When the computer program is executed by a processor, steps in the downlink control information size alignment method applicable to the terminal described in any of the above embodiments are realized.

[0284] Embodiments of the present disclosure provide a computer-readable storage medium for storing a computer program. When the computer program is executed by a processor, steps in the downlink control information size alignment method applicable to the network device described in any of the above embodiments are realized.

[0285] As shown in FIG. 20, 20 is a schematic block diagram of an apparatus 2000 for downlink control information size alignment shown by an embodiment of the present disclosure. The apparatus 2000 can be provided as a base station. Referring to FIG. 20, the apparatus 2000 includes a processing component 2022, a wireless transmission / reception component 2024, an antenna component 2026, and a signal processing unit specific to the wireless interface. The processing component 2022 can further include one or more processors. One of the processors in the processing component 2022 can be configured to realize the downlink control information size alignment method applicable to the network device described in any of the above embodiments.

[0286] FIG. 21 is a schematic block diagram of an apparatus 2100 for downlink control information size alignment according to an embodiment of the present disclosure. For example, the apparatus 2100 may be a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, or the like.

[0287] Referring to FIG. 21, the apparatus 2100 can include one or more of a processing component 2102, a memory 2104, a power component 2106, a multimedia component 2108, an audio component 2110, an input / output (I / O) interface 2112, a sensor component 2114, and a communication component 2116.

[0288] The processing component 2102 generally controls the overall operation of the apparatus 2100, such as operations associated with display, telephone calls, data communication, camera operations, and recording operations. The processing component 2102 can include one or more processors 2120 for executing instructions to complete the steps of the downlink control information size alignment method applied to the terminal described in any of the above embodiments. Note that the processing component 2102 can include one or more modules to facilitate interaction with other components. For example, the processing component 2102 can include a multimedia module to facilitate interaction between the multimedia component 2108 and the processing component 2102.

[0289] Memory 2104 is configured to store various types of data to support the operations in device 2100. Examples of these data include instructions of any application program or method for operating in device 2100, contact data, phone book data, messages, images, videos, etc. Memory 2104 may be implemented by any type of volatile or non-volatile storage device such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic disk, or optical disk, or a combination thereof.

[0290] Power component 2106 provides power to various components of device 2100. Power component 2106 can include a power management system, one or more power sources, and other components related to the generation, management, and distribution of power in device 2100.

[0291] The multimedia component 2108 includes a screen that provides one output interface between the device 2100 and the user. In some embodiments, the screen can include a liquid crystal display (LCD) and a touch panel (TP). When the screen includes a touch panel, the screen can be implemented as a touch screen to receive input signals from the user. The touch panel includes one or more touch sensors to sense touches, swipes, and gestures on the touch panel. The touch sensor can detect not only the boundaries of a touch or swipe operation but also the duration and pressure associated with the touch or swipe operation. In some embodiments, the multimedia component 2108 includes one front camera and / or rear camera. When the device 2100 is in an operation mode such as a shooting mode or a video mode, the front camera and / or rear camera can receive external multimedia data. Each front camera and rear camera may be a fixed optical lens system or may have a focal length and an optical zoom capability.

[0292] The audio component 2110 is configured to output and / or input audio signals. For example, the audio component 2110 includes a microphone (MIC) configured to receive external audio signals when the device 2100 is in an operation mode such as a calling mode, a recording mode, and a voice recognition mode. The received audio signal may be further stored in the memory 2104 or transmitted via the communication component 2116. In some embodiments, the audio component 2110 further includes a speaker for outputting audio signals.

[0293] The I / O interface 2112 provides an interface between the processing component 2102 and the peripheral interface module, and the peripheral interface module may be, for example, a keyboard, a click wheel, buttons, etc. These buttons can include, but are not limited to, a home button, a volume button, a start button, and a lock button.

[0294] The sensor component 2114 includes one or more sensors to provide state evaluation of the device 2100 in various aspects. For example, the sensor component 2114 can detect the on / off state of the device 2100 and the relative positioning of components. For example, the components are the display and keypad of the device 2100, and the sensor component 2114 can further detect changes in the position of the device 2100 or one component of the device 2100, the presence or absence of contact between the user and the device 2100, the direction and position of the device 2100 or acceleration / deceleration, and temperature changes of the device 2100. The sensor component 2114 can also include a proximity sensor configured to detect the presence of nearby objects in the absence of any physical contact. The sensor component 2114 can further include an optical sensor such as a CMOS or CCD image sensor used in imaging applications. In some embodiments, the sensor component 2114 can further include an acceleration sensor, a gyro sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

[0295] The communication component 2116 is configured to facilitate wired or wireless communication between the device 2100 and other devices. The device 2100 can access a wireless network based on a communication standard, such as WiFi, 2G, 3G, 4G LTE, 5G NR, or a combination thereof. In an exemplary embodiment, the communication component 2116 receives a broadcast signal or broadcast-related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 2116 further includes a Near Field Communication (NFC) module to facilitate short-range communication. For example, the NFC module may be implemented based on Radio Frequency Identification (RFID) technology, Infrared Data Association (IrDA) technology, Ultra Wideband (UWB) technology, Bluetooth (BT: registered trademark) technology, and other technologies.

[0296] In an exemplary embodiment, the device 2100 may be implemented by an Application Specific Integrated Circuit (ASIC), a Digital Signal Processor (DSP), a Digital Signal Processing Device (DSPD), a Programmable Logic Device (PLD), a Field Programmable Gate Array (FPGA), a controller, a microcontroller, a microprocessor, or other electronic components, one or more applications to execute the downlink control information size alignment method applied to the terminal described in any of the above embodiments.

[0297] In an exemplary embodiment, a non-transitory computer-readable storage medium containing instructions, such as a memory 2104 containing instructions, is further provided, and the above instructions may be executed by a processor 2120 of the device 2100 to complete the downlink control information size alignment method applied to the terminal described in any of the above embodiments. For example, the non-transitory computer-readable storage medium may be a ROM, a Random Access Memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, or an optical data storage device.

[0298] After considering the specification and practicing the invention disclosed in the specification, those skilled in the art can easily conceive of other embodiments of the present disclosure. The present disclosure is intended to cover any modifications, uses, or appropriate changes of the present disclosure, and these modifications, uses, or appropriate changes follow the general principles of the present disclosure and include well-known common general knowledge or conventional technical means in the art that are not disclosed in the present disclosure. The specification and examples are regarded as merely illustrative, and the true scope and spirit of the present disclosure are pointed out by the following claims.

[0299] In addition, the present disclosure is not limited to the exact structures described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present disclosure is limited only by the appended claims.

[0300] In addition, in this specification, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and it is not necessarily required or implied that there is such an actual relationship or order between these entities or operations. The terms "comprising", "included", or any other modification thereof are intended to cover a non-exclusive "comprising" such that a process, method, article, or device that includes a series of elements includes not only those elements but also other elements not explicitly listed or elements specific to such a process, method, article, or device. Without further limitation, an element limited by the phrase "including one" does not exclude the presence of another identical element in the process, method, article, or device that includes that element.

[0301] As described above, the methods and apparatuses provided by the embodiments of the present disclosure have been described in detail. In this specification, specific examples are applied to explain the principles and embodiments of the present disclosure, and the above description of the examples is only for understanding the methods and core ideas of the present disclosure. At the same time, for those skilled in the art, there are changes in specific embodiments and application scopes according to the ideas of the present disclosure. As described above, the content of this specification is not intended to be understood as a limitation of the present disclosure.

Claims

1. A downlink control information size alignment method, applied to a terminal, the method comprising: determining that the size of downlink control information (DCI) for scheduling data of a plurality of cells is aligned with the size of DCI for scheduling data of a single cell. A downlink control information size alignment method, characterized by the above.

2. The DCI for scheduling data of a plurality of cells includes a first DCI for scheduling uplink data of a plurality of cells and a second DCI for scheduling downlink data of a plurality of cells. The downlink control information size alignment method according to claim 1, characterized by the above.

3. The method further includes: determining that the size of the first DCI is aligned with the size of the second DCI before determining that the size of DCI for scheduling data of a plurality of cells is aligned with the size of DCI for scheduling data of a single cell. The downlink control information size alignment method according to claim 2, characterized by the above.

4. The step of determining that the size of the first DCI is aligned with the size of the second DCI includes: after determining that the size of DCI format 0_1 is aligned with the size of DCI format 1_1, determining that the size of the first DCI is aligned with the size of the second DCI. The downlink control information size alignment method according to claim 3, characterized by the above.

5. The step of determining that the size of the first DCI is aligned with the size of the second DCI includes: before determining that the size of DCI format 0_2 is aligned with the size of DCI format 1_2, determining that the size of the first DCI is aligned with the size of the second DCI. The downlink control information size alignment method according to claim 3, characterized by the above.

6. The method further includes: not desiring that the number of types of DCI sizes received within a serving cell is more than four. A step of not desiring that the number of size types of DCI scrambled by a cell radio network temporary identifier (C-RNTI) received in a serving cell is more than three, and further includes: The downlink control information size alignment method according to any one of claims 1 to 5, characterized in that.

7. A downlink control information size alignment method applied to a terminal, the method comprising: Determining that the size of a first downlink control information (DCI) for scheduling uplink data of a plurality of cells is aligned with the size of a second DCI for scheduling downlink data of the plurality of cells. The downlink control information size alignment method characterized by this.

8. Determining that the size of the first DCI is aligned with the size of the second DCI includes: After determining that the size of DCI format 0_1 is aligned with the size of DCI format 1_1, determining that the size of the first DCI is aligned with the size of the second DCI. The downlink control information size alignment method according to claim 7, characterized in that.

9. Determining that the size of the first DCI is aligned with the size of the second DCI includes: Before determining that the size of DCI format 0_2 is aligned with the size of DCI format 1_2, determining that the size of the first DCI is aligned with the size of the second DCI. The downlink control information size alignment method according to claim 7, characterized in that.

10. The method further includes: A step of not desiring that the number of size types of DCI received in a serving cell is more than five; A step of not desiring that the number of size types of DCI scrambled by a radio network temporary identifier (RNTI) received in a serving cell is more than four. The downlink control information size alignment method according to any one of claims 7 to 9, characterized in that.

11. A downlink control information size alignment method applied to a terminal, the method comprising: Determining that the size of DCI for scheduling data of a single cell is aligned according to a predefined mechanism; Determining the size of DCI for scheduling data of a single cell and the size of DCI for scheduling data of multiple cells in a cell for transmitting DCI; When the number of types of the DCI sizes is greater than a preset threshold, determining candidate DCI from the DCI for scheduling data of a single cell; Determining target DCI from the candidate DCI; Determining that the size of the target DCI is aligned with the size of DCI for scheduling data of the multiple cells, including; A downlink control information size alignment method characterized by the above.

12. The step of determining target DCI from the candidate DCI includes: Determining that the DCI with the largest size among the candidate DCI is the target DCI, Among the DCI for scheduling data of the single cell, the DCI with a size smaller than the size of DCI for scheduling data of multiple cells is the candidate DCI. The downlink control information size alignment method according to claim 11, characterized by the above.

13. The step of determining target DCI from the candidate DCI includes: Determining that the DCI with the smallest size among the candidate DCI is the target DCI, Among the DCI for scheduling data of the single cell, the DCI with a size larger than the size of DCI for scheduling data of multiple cells is the candidate DCI. The downlink control information size alignment method according to claim 11, characterized by the above.

14. The DCI for scheduling data of multiple cells includes a first DCI for scheduling uplink data of multiple cells and a second DCI for scheduling downlink data of multiple cells. The downlink control information size alignment method according to claim 11, characterized by the above.

15. The method includes: Before determining that the size of the target DCI is aligned with the size of the DCI for scheduling data of a plurality of cells, further comprising the step of determining that the size of the first DCI is aligned with the size of the second DCI. The downlink control information size alignment method according to claim 14, characterized in that.

16. The method includes: A step of not desiring that the number of size types of DCI received in the serving cell is more than four; A step of not desiring that the number of size types of DCI scrambled by a cell radio network temporary identifier (C-RNTI) received in the serving cell is more than three, further comprising. The downlink control information size alignment method according to any one of claims 11 to 15, characterized in that.

17. A downlink control information size alignment method, applied to a network device, the method includes: Aligning the size of downlink control information (DCI) for scheduling data of a plurality of cells with the size of DCI for scheduling data of a single cell. The downlink control information size alignment method, characterized in that.

18. The DCI for scheduling data of a plurality of cells includes a first DCI for scheduling uplink data of a plurality of cells and a second DCI for scheduling downlink data of a plurality of cells. The downlink control information size alignment method according to claim 17, characterized in that.

19. The method includes: Before aligning the size of the DCI for scheduling data of a plurality of cells with the size of the DCI for scheduling data of a single cell, further comprising the step of aligning the size of the first DCI with the size of the second DCI. The downlink control information size alignment method according to claim 18, characterized in that.

20. The step of aligning the size of the first DCI with the size of the second DCI includes: After aligning the size of DCI format 0_1 with the size of DCI format 1_1, including the step of aligning the size of the first DCI with the size of the second DCI. The method for aligning the downlink control information size according to claim 19, characterized in that...

21. The step of aligning the size of the first DCI and the size of the second DCI includes... Before aligning the size of DCI format 0_2 and the size of DCI format 1_2, the step of aligning the size of the first DCI and the size of the second DCI is included. The method for aligning the downlink control information size according to claim 19, characterized in that...

22. A method for aligning the downlink control information size, applied to a network device, the method includes... The step of aligning the size of the first downlink control information (DCI) for scheduling uplink data of a plurality of cells and the size of the second DCI for scheduling downlink data of a plurality of cells. The method for aligning the downlink control information size, characterized in that...

23. Aligning the size of the first DCI and the size of the second DCI includes... After aligning the size of DCI format 0_1 and the size of DCI format 1_1, aligning the size of the first DCI and the size of the second DCI is included. The method for aligning the downlink control information size according to claim 22, characterized in that...

24. Aligning the size of the first DCI and the size of the second DCI includes... Before aligning the size of DCI format 0_2 and the size of DCI format 1_2, aligning the size of the first DCI and the size of the second DCI is included. The method for aligning the downlink control information size according to claim 22, characterized in that...

25. A method for aligning the downlink control information size, applied to a network device, the method includes... The step of aligning the size of the DCI for scheduling the data of a single cell according to a predefined mechanism, and... The step of determining the size of the DCI for scheduling the data of a single cell and the size of the DCI for scheduling the data of a plurality of cells in the cell for transmitting the DCI. When the number of size types of the DCI is greater than a preset threshold, determining a candidate DCI from among the DCIs for scheduling data of a single cell; determining a target DCI from among the candidate DCIs; aligning the size of the target DCI with the size of the DCI for scheduling data of a plurality of cells, characterized in that it is a downlink control information size alignment method.

26. The step of determining a target DCI from among the candidate DCIs includes determining that the DCI with the largest size among the candidate DCIs is the target DCI, wherein among the DCIs for scheduling data of the single cell, a DCI having a size smaller than the size of the DCI for scheduling data of a plurality of cells is the candidate DCI, characterized in that it is the downlink control information size alignment method according to claim 25.

27. The step of determining a target DCI from among the candidate DCIs includes determining that the DCI with the smallest size among the candidate DCIs is the target DCI, wherein among the DCIs for scheduling data of the single cell, a DCI having a size larger than the size of the DCI for scheduling data of a plurality of cells is the candidate DCI, characterized in that it is the downlink control information size alignment method according to claim 25.

28. The DCI for scheduling data of a plurality of cells includes a first DCI for scheduling uplink data of a plurality of cells and a second DCI for scheduling downlink data of a plurality of cells, characterized in that it is the downlink control information size alignment method according to claim 25.

29. The method further includes aligning the size of the first DCI with the size of the second DCI before aligning the size of the target DCI with the size of the DCI for scheduling data of a plurality of cells, characterized in that it is the downlink control information size alignment method according to claim 28.

30. A downlink control information size alignment device, which is applied to a terminal, and the device A processing module configured to determine that the size of downlink control information (DCI) for scheduling data of a plurality of cells is aligned with the size of DCI for scheduling data of a single cell, A downlink control information size alignment apparatus characterized by the above.

31. A downlink control information size alignment apparatus applied to a terminal, the apparatus comprising: A processing module configured to determine that the size of first downlink control information (DCI) for scheduling uplink data of a plurality of cells is aligned with the size of second DCI for scheduling downlink data of a plurality of cells, A downlink control information size alignment apparatus characterized by the above.

32. A downlink control information size alignment apparatus applied to a terminal, the apparatus including a processing module, The processing module determines, according to a predefined mechanism, that the size of DCI for scheduling data of a single cell is aligned, determines the size of DCI for scheduling data of a single cell in a cell for transmitting DCI and the size of DCI for scheduling data of a plurality of cells, and when the number of DCI size types is greater than a preset threshold, determines candidate DCI from the DCI for scheduling data of a single cell, determines target DCI from the candidate DCI, and is configured to determine that the size of the target DCI is aligned with the size of DCI for scheduling data of a plurality of cells. A downlink control information size alignment apparatus characterized by the above.

33. A downlink control information size alignment apparatus applied to a network device, the apparatus comprising: A processing module configured to align the size of downlink control information (DCI) for scheduling data of a plurality of cells with the size of DCI for scheduling data of a single cell, A downlink control information size alignment apparatus characterized by the above.

34. A downlink control information size alignment apparatus applied to a network device, the apparatus comprising: A processing module configured to align the size of first downlink control information (DCI) for scheduling uplink data of a plurality of cells with the size of second DCI for scheduling downlink data of the plurality of cells. A downlink control information size alignment apparatus, characterized in that. **Claim 35** A downlink control information size alignment apparatus applied to a network device, the apparatus including a processing module. The processing module is configured to align the size of DCI for scheduling data of a single cell according to a predefined mechanism, determine the size of DCI for scheduling data of a single cell in a cell for transmitting DCI and the size of DCI for scheduling data of a plurality of cells, when the number of DCI size types is greater than a preset threshold, determine candidate DCI from the DCI for scheduling data of a single cell, determine target DCI from the candidate DCI, and align the size of the target DCI with the size of DCI for scheduling data of a plurality of cells. A downlink control information size alignment apparatus, characterized in that. **Claim 36** A communication device, comprising: A processor; A memory for storing a computer program, wherein when the computer program is executed by the processor, the downlink control information size alignment method according to any one of Claims 1 to 16 is realized. A communication device, characterized in that. **Claim 37** A communication device, comprising: A processor; A memory for storing a computer program, wherein when the computer program is executed by the processor, the downlink control information size alignment method according to any one of Claims 17 to 25 is realized. A communication device, characterized in that. **Claim 38** A computer-readable storage medium storing a computer program, wherein when the computer program is executed by a processor, the steps in the downlink control information size alignment method according to any one of Claims 1 to 16 are realized. A computer-readable storage medium, characterized in that. **Claim 39** When the computer program is executed by a processor, the steps in the downlink control information size alignment method according to any one of Claims 1 to 16 are realized. A computer-readable storage medium, characterized in that. **Claim 39** A computer-readable storage medium storing a computer program, wherein when the computer program is executed by a processor, steps in the downlink control information size alignment method according to any one of claims 17 to 25 are realized; a computer-readable storage medium characterized by the above.

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