Downlink control information (DCI) reception, transmission method and device, and storage medium

Abstract

The present disclosure provides a downlink control information (DCI) receiving and transmitting method and device, and a storage medium. The DCI receiving method comprises: determining a first resource range corresponding to a serving cell; determining a size corresponding to multi-cell downlink control information (MC-DCI) based on a DCI alignment operation in each first resource range; and receiving and parsing the MC-DCI based on the size. The present disclosure can effectively reduce the number of zero bits added in the DCI alignment process, reduce the terminal blind detection complexity, and improve the PDCCH transmission performance.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the field of communications, and in particular to a downlink control information (DCI) receiving and sending method and device, and a storage medium. BACKGROUND

[0002] 5th Generation Mobile Communication Technology (5G) New Radio (NR) technology works in a relatively wide frequency spectrum range, and with the re-farming of the existing cellular network corresponding frequency bands, the utilization rate of the corresponding frequency spectrum will steadily increase. However, for Frequency Range 1 (FR1), the available frequency domain resources are gradually fragmented. In order to meet different spectrum requirements, it is necessary to utilize these scattered frequency spectrum resources in a more efficient and flexible manner, so as to achieve higher network throughput and good coverage.

[0003] Based on the related mechanism, one downlink control information (DCI) in the existing serving cell only allows scheduling data of one cell. However, with the gradual fragmentation of frequency resources, the demand for simultaneously scheduling data of multiple cells will gradually increase, and therefore, it is necessary to introduce a DCI for scheduling data of multiple cells.

[0004] In the Release-18 (Rel-18) scenario, a single DCI can simultaneously schedule 3 or more cells. Since the multi-cell scheduling DCI corresponds to multiple size sizes, it will increase the blind detection complexity of the terminal. At the same time, when the base station performs DCI alignment operation, the number of zero bits filled in the DCI increases, the corresponding DCI size increases, and the physical downlink control channel (PDCCH) transmission performance is damaged. SUMMARY

[0005] To overcome the problems in the related art, the embodiments of the present disclosure provide a downlink control information (DCI) receiving and sending method and device, and a storage medium.

[0006] According to a first aspect of the embodiments of the present disclosure, a downlink control information (DCI) receiving method is provided, which is performed by a terminal and includes:

[0007] determining a first resource range corresponding to a serving cell;

[0008] determining a size size corresponding to a multi-cell downlink control information (MC-DCI) based on a DCI alignment operation in each of the first resource ranges.

[0009] receiving and parsing the MC-DCI based on the size.

[0010] Optionally, the determining the first resource range corresponding to the serving cell comprises any one of the following:

[0011] determining the first resource range based on at least one starting resource unit identifier and a number of continuous resource units corresponding to each of the starting resource unit identifiers.

[0012] determining the first resource range based on a set of resource unit identifiers.

[0013] Optionally, the set of resource unit identifiers comprises at least one of the following:

[0014] a set of search space (SS) identifiers;

[0015] a set of bandwidth part (BWP) identifiers;

[0016] a set of control resource (CORESET) identifiers.

[0017] Optionally, the first resource range is a time domain resource range and / or a frequency domain resource range.

[0018] Optionally, if any two of the MC-DCIs correspond to different formats, the terminal does not expect to determine the size of the two MC-DCIs in the same first resource range; and / or,

[0019] if any two of the MC-DCIs correspond to different sizes before performing a DCI alignment operation, the terminal does not expect to determine the size of the two MC-DCIs in the same first resource range.

[0020] According to a second aspect of the embodiments of the present disclosure, a method for receiving downlink control information (DCI) is provided, which is performed by a terminal and comprises:

[0021] determining a first condition associated with a first cell group; wherein the first cell group comprises at least one cell that can be scheduled by multi-cell downlink control information (MC-DCI);

[0022] when the MC-DCI satisfies the first condition, determining a size of the MC-DCI based on a DCI alignment operation of a first cell in the first cell group.

[0023] receiving and parsing the MC-DCI at a second cell based on the size.

[0024] Optionally, the first condition is at least one of the following:

[0025] the MC-DCI supports a maximum number of simultaneously schedulable cells;

[0026] the number of cells simultaneously scheduled by the MC-DCI;

[0027] the MC-DCI supports a maximum number of cells among the plurality of cells schedulable by the MC-DCI that support a supplementary uplink (SUL) feature;

[0028] the MC-DCI supports a maximum number of cells among the plurality of cells schedulable by the MC-DCI that do not support the SUL feature.

[0029] Optionally, different first conditions are associated with different first cell groups.

[0030] Optionally, when the first cell group includes a plurality of cells, the first cell is a cell with a maximum or minimum cell index value in the first cell group.

[0031] According to a third aspect of the embodiments of the present disclosure, a method for receiving downlink control information (DCI) is provided, which is performed by a terminal and includes:

[0032] determining a first size corresponding to each format of multi-cell downlink control information (MC-DCI); and receiving and parsing the MC-DCI on a serving cell based on the first size.

[0033] Optionally, in a case where the number of cells simultaneously scheduled by the MC-DCI is dynamically switched, the number of cells simultaneously scheduled by the MC-DCI has at most two values.

[0034] Optionally, among all cells schedulable by the MC-DCI,

[0035] none of the cells support a SUL feature; or

[0036] only a cell receiving the MC-DCI supports the SUL feature; or

[0037] a number of cells supporting the SUL feature is less than or equal to 2.

[0038] Optionally, the determining of the first size corresponding to each format of MC-DCI includes:

[0039] determining the first size corresponding to each format of MC-DCI based on an indication of signaling transmitted by a base station; or

[0040] determining the first size corresponding to each format of MC-DCI based on a protocol agreement.

[0041] According to a fourth aspect of embodiments of the present disclosure, a method for sending downlink control information (DCI) is provided, which is performed by a base station and includes:

[0042] determining a first resource range corresponding to a serving cell and a multi-cell downlink control information (MC-DCI) corresponding to the first resource range;

[0043] performing a DCI alignment operation in each of the first resource ranges to determine a size of the MC-DCI;

[0044] sending the MC-DCI to a terminal based on the size.

[0045] Optionally, the determining the first resource range corresponding to the serving cell includes any of the following:

[0046] determining the first resource range based on at least one starting resource unit identifier and a number of continuous resource units corresponding to each of the starting resource unit identifiers;

[0047] determining the first resource range based on a set of resource unit identifiers.

[0048] Optionally, the set of resource unit identifiers includes at least one of the following:

[0049] a set of search space (SS) identifiers;

[0050] a set of bandwidth part (BWP) identifiers;

[0051] a set of control resource (CORESET) identifiers.

[0052] Optionally, the first resource range is a time domain resource range and / or a frequency domain resource range.

[0053] Optionally, if any two of the MC-DCIs correspond to different formats, the base station performs the DCI alignment operation on the two MC-DCIs in different first resource ranges, respectively; and / or,

[0054] if any two of the MC-DCIs correspond to different sizes before the DCI alignment operation, the base station performs the DCI alignment operation on the two MC-DCIs in different first resource ranges, respectively.

[0055] According to a fifth aspect of embodiments of the present disclosure, a method for sending downlink control information (DCI) is provided, which is performed by a base station and includes:

[0056] determining a multi-cell downlink control information (MC-DCI);

[0057] determining a first condition associated with a first cell group; wherein the first cell group comprises at least one cell that the MC-DCI can schedule;

[0058] when the first condition is met by the MC-DCI, determining a size of the MC-DCI based on a DCI alignment operation performed in a first cell in the first cell group;

[0059] sending the MC-DCI to a terminal based on the size.

[0060] Optionally, the first condition is at least one of:

[0061] the MC-DCI supports a maximum number of simultaneously schedulable cells;

[0062] a number of cells simultaneously scheduled by the MC-DCI;

[0063] a maximum number of cells in the plurality of cells that the MC-DCI can schedule that support a supplementary uplink (SUL) feature;

[0064] a maximum number of cells in the plurality of cells that the MC-DCI can schedule that do not support the SUL feature.

[0065] Optionally, different first conditions are associated with different first cell groups.

[0066] Optionally, when the first cell group comprises a plurality of cells, the first cell is a cell with a maximum or minimum cell index value in the first cell group.

[0067] According to a sixth aspect of an embodiment of the present disclosure, a method for sending downlink control information (DCI) is provided, which is performed by a base station and comprises:

[0068] determining a first size corresponding to each format of MC-DCI;

[0069] sending the MC-DCI to a terminal based on the first size.

[0070] Optionally, in a case where the number of cells simultaneously scheduled by the MC-DCI is dynamically switched, the number of cells simultaneously scheduled by the MC-DCI has at most two values.

[0071] Optionally, in all cells that the MC-DCI can schedule,

[0072] none of the cells support the SUL feature; or

[0073] only the cells receiving the MC-DCI support the SUL feature; or

[0074] The number of cells supporting the SUL feature is less than or equal to 2.

[0075] Optionally, the method further comprises:

[0076] sending signaling to the terminal; wherein the signaling is used to indicate the first size corresponding to each format of the MC-DCI; or

[0077] determining the first size corresponding to each format of the MC-DCI based on a protocol agreement.

[0078] Optionally, the method further comprises:

[0079] aligning the size of the MC-DCI with the size corresponding to the format of the MC-DCI based on a DCI alignment operation performed in the serving cell.

[0080] According to a seventh aspect of the embodiments of the present disclosure, a downlink control information (DCI) receiving apparatus is provided, which is applied to a terminal and comprises:

[0081] a first determining module configured to determine a first resource range corresponding to a serving cell;

[0082] a second determining module configured to determine a size corresponding to a multi-cell downlink control information (MC-DCI) based on a DCI alignment operation performed in each of the first resource ranges;

[0083] a first receiving module configured to receive and parse the MC-DCI based on the size.

[0084] According to an eighth aspect of the embodiments of the present disclosure, a downlink control information (DCI) receiving apparatus is provided, which is applied to a terminal and comprises:

[0085] a third determining module configured to determine a first condition associated with a first cell group; wherein the first cell group comprises at least one cell that can be scheduled by a multi-cell downlink control information (MC-DCI);

[0086] a fourth determining module configured to determine a size of the MC-DCI based on a DCI alignment operation of a first cell in the first cell group when the MC-DCI satisfies the first condition;

[0087] a second receiving module configured to receive and parse the MC-DCI in a second cell based on the size.

[0088] According to a ninth aspect of embodiments of the present disclosure, a downlink control information DCI receiving apparatus is provided, the apparatus is applied to a terminal, and comprises:

[0089] A fifth determining module is configured to determine a first size corresponding to multi-cell downlink control information MC-DCI of each format;

[0090] A third receiving module is configured to receive and parse the MC-DCI at a serving cell based on the first size.

[0091] According to a tenth aspect of embodiments of the present disclosure, a downlink control information DCI sending apparatus is provided, the apparatus is applied to a base station, and comprises:

[0092] A sixth determining module is configured to determine a first resource range corresponding to a serving cell and multi-cell downlink control information MC-DCI corresponding to the first resource range;

[0093] A first aligning module is configured to perform a DCI aligning operation in each of the first resource ranges to determine a size of the MC-DCI;

[0094] A first sending module is configured to send the MC-DCI to a terminal based on the size.

[0095] According to an eleventh aspect of embodiments of the present disclosure, a downlink control information DCI sending apparatus is provided, the apparatus is applied to a base station, and comprises:

[0096] A seventh determining module is configured to determine multi-cell downlink control information MC-DCI;

[0097] An eighth determining module is configured to determine a first condition associated with a first cell group; wherein the first cell group comprises at least one cell that can be scheduled by the MC-DCI;

[0098] A second aligning module is configured to determine a size of the MC-DCI based on a DCI aligning operation performed by a first cell in the first cell group when the MC-DCI satisfies the first condition;

[0099] A second sending module is configured to send the MC-DCI to a terminal based on the size.

[0100] According to a twelfth aspect of embodiments of the present disclosure, a downlink control information DCI sending apparatus is provided, the apparatus is applied to a base station, and comprises:

[0101] A ninth determining module is configured to determine multi-cell downlink control information MC-DCI;

[0102] A third sending module configured to send the MC-DCI to the terminal based on a first size corresponding to a format of the MC-DCI.

[0103] According to a thirteenth aspect of the embodiments of the present disclosure, a computer-readable storage medium is provided, the storage medium storing a computer program for executing the downlink control information DCI receiving method of any one of the terminal sides.

[0104] According to a fourteenth aspect of the embodiments of the present disclosure, a computer-readable storage medium is provided, the storage medium storing a computer program for executing the downlink control information DCI sending method of any one of the base station sides.

[0105] According to a fifteenth aspect of the embodiments of the present disclosure, a downlink control information DCI receiving apparatus is provided, comprising:

[0106] a processor;

[0107] a memory for storing processor-executable instructions;

[0108] The processor is configured to execute the downlink control information DCI receiving method of any one of the terminal sides.

[0109] According to a sixteenth aspect of the embodiments of the present disclosure, a downlink control information DCI sending apparatus is provided, comprising:

[0110] a processor;

[0111] a memory for storing processor-executable instructions;

[0112] The processor is configured to execute the downlink control information DCI sending method of any one of the base station sides.

[0113] The technical solutions provided by the embodiments of the present disclosure can include the following beneficial effects:

[0114] The present disclosure can effectively reduce the number of added zero bits in the DCI alignment process, reduce the terminal blind detection complexity, and improve the PDCCH transmission performance.

[0115] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present disclosure. BRIEF DESCRIPTION OF DRAWINGS

[0116] The accompanying drawings incorporated in and forming a part of the specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the disclosure.

[0117] Figure 1FIG. 1 is a schematic diagram of a single DCI scheduling PDSCH of multiple cells according to an example embodiment.

[0118] Figure 2A FIG. 2 is a schematic diagram of a DCI receiving method flow according to an example embodiment.

[0119] Figure 2B FIG. 3 is a schematic diagram of a first resource range according to an example embodiment.

[0120] Figure 2C FIG. 4 is a schematic diagram of another first resource range according to an example embodiment.

[0121] Figure 3 FIG. 5 is a schematic diagram of another DCI receiving method flow according to an example embodiment.

[0122] Figure 4 FIG. 6 is a schematic diagram of another DCI receiving method flow according to an example embodiment.

[0123] Figure 5 FIG. 7 is a schematic diagram of another DCI transmitting method flow according to an example embodiment.

[0124] Figure 6 FIG. 8 is a schematic diagram of another DCI transmitting method flow according to an example embodiment.

[0125] Figure 7 FIG. 9 is a schematic diagram of another DCI transmitting method flow according to an example embodiment.

[0126] Figure 8A FIG. 10 is a schematic diagram of another first resource range according to an example embodiment.

[0127] Figure 8B FIG. 11 is a schematic diagram of another first resource range according to an example embodiment.

[0128] Figure 9 FIG. 12 is a schematic diagram of a number of cells scheduled by MC-DCI according to an example embodiment.

[0129] Figure 10 FIG. 13 is a schematic diagram of another number of cells scheduled by MC-DCI according to an example embodiment.

[0130] Figure 11 FIG. 14 is a block diagram of a DCI receiving apparatus according to an example embodiment.

[0131] Figure 12 FIG. 15 is a block diagram of another DCI receiving apparatus according to an example embodiment.

[0132] Figure 13 is another DCI receiving apparatus block diagram shown according to an exemplary embodiment.

[0133] Figure 14 is a DCI transmitting apparatus block diagram shown according to an exemplary embodiment.

[0134] Figure 15 is another DCI transmitting apparatus block diagram shown according to an exemplary embodiment.

[0135] Figure 16 is another DCI transmitting apparatus block diagram shown according to an exemplary embodiment.

[0136] Figure 17 is a structure diagram of a DCI receiving apparatus according to an exemplary embodiment of the present disclosure.

[0137] Figure 18 is a structure diagram of a DCI transmitting apparatus according to an exemplary embodiment of the present disclosure. DETAILED DESCRIPTION

[0138] The exemplary embodiments will now be described in detail with reference to the accompanying drawings. The following description is with reference to the drawings, in which like numerals represent like elements throughout the several figures. The following detailed description of the exemplary embodiments is not representative of all embodiments consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with some aspects of the present disclosure as detailed in the appended claims.

[0139] The terminology used in the present disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the present disclosure. As used in the present disclosure and the appended claims, the singular forms "a," "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will also be understood that the term "and / or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

[0140] It will be understood that, although the terms first, second, third, etc. can be used herein to describe various information, these terms are not intended to denote a temporal or chronological order. Rather, these terms are used solely to distinguish one from another only. For example, a first information can be termed a second information, and, similarly, a second information can be termed a first information, without departing from the scope of the present disclosure. As used herein, the word "if' can be interpreted to mean "when" or "upon" or "in response to determining" depending on the context.

[0141] Based on the correlation mechanism, scheduling one DCI in a cell only allows scheduling data transmission of one cell, that is, only scheduling physical uplink shared channel (PUSCH) or physical downlink shared channel (PDSCH) of one cell. With the gradual fragmentation of frequency resources, the demand for simultaneously scheduling multiple cell data will gradually increase. At the same time, in order to reduce the control signaling overhead, Rel-18 WID supports single DCI scheduling multiple cell PDSCH or PUSCH. It should be noted that each cell corresponds to one PDSCH and one PUSCH. For example, scheduling the PDSCH of 3 cells through one DCI can be Figure 1 as shown.

[0142] In the scenario, due to the dynamic change of the number of scheduling cells, the characteristics of supplementary uplink (SUL), and other factors, the number of bits occupied by the multi-cell scheduling downlink control information (MC-DCI) in the serving cell is greatly different. In the subsequent embodiments, MC-DCI represents mcscheduling DCI. Taking the definition of MC-DCI as an example, the possible multiple size conditions of MC-DCI are introduced as follows: DCI format 0_3: scheduling PUSCH for scheduling multiple cells; DCI format 1_3: used for scheduling PDSCH of multiple cells.

[0143] For example, part of the DCI field (for example, TB related field) in DCI format 0_3 and DCI format 1_3 may need to indicate the information of different cells in a separate manner. The separate manner refers to that different scheduled cells indicate the information of the corresponding cells through different TB fields. Under the condition that the number of scheduling cells of the DCI format 0_3 and DCI format 1_3 changes dynamically, or multiple DCI format 0_3 and / or DCI format 1_3 schedule the serving cell, multiple size corresponding MC-DCI may be configured in the serving cell.

[0144] For example, if the DCI format 0_3 corresponds to multiple scheduled cells supporting SUL characteristics, the PUSCH of different scheduled cells transmits corresponding partial bandwidth (BWP) on SUL or non-supplementary uplink (NSUL), which will also cause the DCI format 0_3 to correspond to multiple sizes.

[0145] The MC-DCI corresponds to multiple sizes, which increases the DCI size budget and increases the terminal blind detection complexity.

[0146] In the related mechanism, for the same DCI format, such as DCI 0_1 and DCI 0_2, if the terminal supports SUL characteristics in the service cell, and the DCI size corresponding to the SUL is different from the DCI size corresponding to the non-SUL, the DCI 0_1 or DCI 0_2 corresponding to the SUL and NSUL is aligned by zero padding, that is, the DCI 0_1 or DCI 0_2 corresponding to the SUL and NSUL is aligned by filling zero bits. Of course, in the related mechanism, the DCI alignment can also be achieved by truncation.

[0147] For MC-DCI, based on the above conditions, the number of DCI sizes corresponding to the same format increases, and the size gap increases. If the DCI size alignment is simply achieved by zero padding, the DCI size will be significantly increased, and the PDCCH transmission performance will be reduced.

[0148] To solve the above technical problems, the present disclosure provides a DCI receiving and transmitting method, which can effectively reduce the number of zero bits increased in the DCI alignment process, reduce the terminal blind detection complexity, and improve the PDCCH transmission performance.

[0149] The DCI receiving method provided by the present disclosure will be introduced from the terminal side first.

[0150] Method one, the terminal deduces the DCI alignment operation in each first resource range to determine the size of the MC-DCI.

[0151] The present disclosure provides a DCI receiving method, as shown in Figure 2A Figure 2A is a flow chart of a DCI receiving method according to an embodiment, which can be executed by a terminal. The method can include the following steps:

[0152] In step 201, the first resource range corresponding to the service cell is determined. ​

[0153] In the embodiments of the present disclosure, the number of serving cells can be one or more.

[0154] In a possible implementation, in a carrier aggregation (CA) scenario, the number of serving cells corresponding to a terminal can be multiple, and each serving cell can determine a corresponding first resource range respectively.

[0155] In a possible implementation, the first resource range corresponding to a serving cell can include at least one starting resource unit identifier and a number of continuous resource units corresponding to each starting resource unit identifier.

[0156] The starting resource unit can be a starting time domain resource unit and / or a starting frequency domain resource unit, which is not limited in the present disclosure. In addition, the number of continuous resource units can be a number of continuous time domain resource units and / or a number of continuous frequency domain resource units, which is also not limited in the present disclosure.

[0157] The first resource range can be continuous or discontinuous in time domain and / or frequency domain, which is also not limited in the present disclosure. For example, the first resource range is discontinuous in time domain, the first resource range #1 corresponding to a serving cell includes slot #0, slot #2, the first resource range #2 includes slot #4, slot #6, and so on. For another example, the first resource range is continuous in time domain, the first resource range #1 corresponding to a serving cell includes slot #0, slot #1, the first resource range #2 includes slot #2, slot #3, and so on.

[0158] In another possible implementation, the first resource range corresponding to a serving cell can include a resource unit identifier set. Similarly, the resource unit can be a time domain resource unit and / or a frequency domain resource unit, which is not limited in the present disclosure. In addition, the first resource range can be continuous or discontinuous in time domain and / or frequency domain, which is also not limited in the present disclosure.

[0159] In a possible implementation, the resource unit identifier set can include but is not limited to at least one of the following: a search space (SS) identifier set; a bandwidth part (BWP) identifier set; a control resource (CORESET) identifier set.

[0160] Preferably, the resource unit identification set can comprise a SS identification set. For example, the first resource range corresponding to the serving cell is SS#1, SS#3. Accordingly, the terminal subsequently deduces the DCI alignment operation within SS#1, determines the size of the MC-DCI within SS#1, and deduces the DCI alignment operation within SS#3, determines the size of the MC-DCI within SS#3.

[0161] In one possible implementation, the first resource range described above can be a time domain resource range and / or a frequency domain resource range.

[0162] In one possible implementation, the first resource range can be determined by a protocol or can be configured by the base station through signaling, which is not limited in the disclosure.

[0163] For example, the first resource range corresponding to the serving cell can be in units of frames, slots, symbols, etc.

[0164] For example, the first resource range corresponding to the serving cell can be in units of slots. The starting slot of each first resource range of the serving cell and the number of slots included in each first resource range can be determined by a protocol or by signaling sent by the base station, for example, the index value of the starting slot is even, and each first resource range includes 2 slots. Referring to FIG. 1, the first resource range of the serving cell is continuous in the time domain, the first resource range #1 corresponding to the serving cell includes slot#0, slot#1, the first resource range #2 corresponding to the serving cell includes slot#2, slot#3, and so on. Figure 2B

[0165] For example, the first resource range corresponding to the serving cell can be in units of slots. The starting slot of each first resource range of the serving cell and the number of slots included in each first resource range can be determined by a protocol or by signaling sent by the base station, for example, the index value of the starting slot is even, and each first resource range includes 2 slots. Referring to FIG. 1, the first resource range of the serving cell is continuous in the time domain, the first resource range #1 corresponding to the serving cell includes slot#0, slot#1, the first resource range #2 corresponding to the serving cell includes slot#2, slot#3, and so on.

[0166] For example, the first resource range corresponding to the serving cell can be in units of slots. The starting slot of each first resource range of the serving cell and the number of slots included in each first resource range can be determined by a protocol or by signaling sent by the base station, for example, the index value of the starting slot is even, and each first resource range includes 2 slots. Referring to FIG. 1, the first resource range of the serving cell is continuous in the time domain, the first resource range #1 corresponding to the serving cell includes slot#0, slot#1, the first resource range #2 corresponding to the serving cell includes slot#2, slot#3, and so on. Figure 2C

[0167] ​​The above is only an example, and the first resource range can also be a time domain resource range and a frequency domain resource range, and the present disclosure does not limit this.

[0168] In step 202, based on the DCI alignment operation performed in each of the first resource ranges, the size of the multi-cell downlink control information (MC-DCI) is determined.

[0169] In the embodiments of the present disclosure, the multi-cell downlink control information (MC-DCI) is used to schedule data transmission of multiple cells. The data transmission of each cell corresponds to one physical downlink shared channel (PDSCH) and / or one physical uplink shared channel (PUSCH).

[0170] In the related art, the DCI alignment operation is performed by the base station, and the base station performs the DCI alignment operation on a per cell basis, including but not limited to performing the DCI alignment operation based on the time-frequency resources of the cell, and can also include the number of DCI formats and the number of DCI sizes configured for the entire cell, and using zero padding or other methods such as truncation to perform DCI alignment. For example, the base station determines that the DCI of a certain format needs to occupy n1 bits after alignment, and the size of the DCI determined by the base station is n2 bits, n2 is less than n1, at this time the base station can increase the size of the DCI to n1 by padding zero bits. For another example, the base station determines that the DCI of a certain format needs to occupy n1 bits after alignment, and the size of the DCI determined by the base station is n2 bits, n2 is greater than n1, at this time the base station can reduce the number of bits of the DCI to n1 by truncation.

[0171] For the terminal, the radio resource control (RRC) signaling sent by the base station can be received, so as to determine the DCI format, DCI size and the like that the terminal may need to blindly detect, and the terminal deduces the DCI alignment operation based on the DCI format, DCI size and the like that the terminal may need to blindly detect, determines the actual size of the DCI, and receives and parses the DCI.

[0172] In the related art, the restriction of the DCI size is based on per cell, that is, the DCI alignment operation is performed in each serving cell, and the 3+1 restriction condition needs to be met. The 3+1 restriction condition refers to that the number of DCI size types scrambled by the cell-radio network temporary identifier (C-RNTI) in the serving cell does not exceed 3, and the total number of DCI size types configured in the serving cell does not exceed 4.

[0173] In the embodiments of the present disclosure, the base station side can perform the DCI alignment operation in the multiple serving cells scheduled by the MC-DCI, or can also perform the DCI alignment operation in one of the multiple serving cells scheduled by the MC-DCI, and the present disclosure does not limit this.

[0174] The terminal side deduces the DCI alignment operation in each first resource range in the serving cell. In each first resource range, the DCI size can meet the 3+1 restriction condition in the related art or other restriction conditions. The terminal determines the size corresponding to the MC-DCI by deducing the DCI alignment operation in each first resource range, so as to subsequently parse and receive the MC-DCI based on the size of the MC-DCI.

[0175] In the embodiments of the present disclosure, the other restriction condition met by the DCI size in each first resource range of the serving cell can be 4+1, or other protocol agreed DCI size restriction condition, and the present disclosure does not limit this.

[0176] In the embodiments of the present disclosure, the DCI alignment operation performed by the base station side in each first resource range for the MC-DCI refers to that in each first resource range, the base station aligns the size before the MC-DCI alignment with the size after the MC-DCI alignment by zero padding or other methods such as length truncation.

[0177] In step 203, the MC-DCI is received and parsed based on the size.

[0178] In the above embodiments, compared with the terminal deducing the DCI alignment operation in per cell, in the present disclosure, the terminal can deduce the DCI alignment operation in a smaller first resource range. It can be understood that the smaller the resource range, the fewer the number of formats and sizes of DCI that need to be blindly detected by the terminal side, thereby effectively reducing the blind detection complexity of the terminal and improving the PDCCH transmission performance.

[0179] In some optional embodiments, the first resource range corresponding to the serving cell can be determined in the following manners:

[0180] Manner one: determining the first resource range based on at least one starting resource unit identifier and the number of continuous resource units corresponding to each starting resource unit identifier.

[0181] Here, the starting resource unit can be a starting time-domain resource unit and / or a starting frequency-domain resource unit, which are not limited in the disclosure. In addition, the number of continuous resource units can be the number of continuous time-domain resource units and / or the number of continuous frequency-domain resource units, which are also not limited in the disclosure. Here, the first resource range can be continuous or discontinuous in the time domain and / or the frequency domain, which are also not limited in the disclosure.

[0182] Manner two: determining the first resource range based on a resource unit identifier set.

[0183] In the embodiments of the disclosure, the first resource range can be a continuous time-domain resource or discontinuous time-domain resource, and / or the first resource range can be a continuous frequency-domain resource or discontinuous frequency-domain resource, which are not limited in the disclosure.

[0184] The resource unit identifier set can include, but is not limited to, at least one of the following: a SS identifier set; a BWP identifier set; a CORESET identifier set. Preferably, the resource unit identifier set can include the SS identifier set.

[0185] The above first resource range can be agreed by a protocol or configured by a base station through signaling, which are not limited in the disclosure.

[0186] In the above embodiments, the first resource range corresponding to the serving cell can be determined in the above manners, so that the terminal can deduce the DCI alignment operation in each first resource range to determine the size of the MC-DCI, reduce the blind detection complexity of the terminal, and effectively improve the PDCCH transmission performance.

[0187] In some optional embodiments, if any two MC-DCIs correspond to different formats, the terminal does not expect to determine the size of the two MC-DCIs in the same first resource range.

[0188] If the terminal needs to blindly detect two MC-DCIs with different formats, the terminal needs to deduce the DCI alignment operation in different first resource ranges to determine the size of the two MC-DCIs. That is, the terminal does not expect to determine the size of the two MC-DCIs in the same first resource range.

[0189] In the above embodiment, the different formats of MC-DCI are isolated by different first resource ranges, the terminal blind detection complexity is reduced, and the PDCCH transmission performance is effectively improved.

[0190] In some optional embodiments, if any two DCIs correspond to different size sizes before performing the DCI alignment operation, the terminal does not expect to determine the size sizes corresponding to the two MC-DCIs in the same first resource range.

[0191] It should be noted that the terminal receives the RRC signaling sent by the base station, and determines the DCI formats that the terminal may blind detect based on the RRC signaling. The terminal can determine the MC-DCI formats that may be blindly detected and the size before the MC-DCI alignment and the size after the MC-DCI alignment based on the network side configuration.

[0192] In the embodiments of the present disclosure, if the terminal determines that the two DCIs correspond to different size sizes before performing the DCI alignment operation, the terminal needs to deduce the DCI alignment operation in different first resource ranges to determine the sizes of the two MC-DCIs. That is, the terminal does not expect to determine the size sizes corresponding to the two MC-DCIs in the same first resource range.

[0193] In the above embodiment, the different formats of MC-DCI are isolated by different first resource ranges, the terminal blind detection complexity is reduced, and the PDCCH transmission performance is effectively improved.

[0194] Method two, for MC-DCI corresponding to different sizes before performing the DCI alignment, deducing the DCI alignment operation in the cells in different cell groups.

[0195] The embodiments of the present disclosure provide a DCI receiving method, referring to Figure 3 , a flow chart of a DCI receiving method according to an embodiment is shown, which can be performed by a terminal. The method can include the following steps: Figure 3

[0196] In step 301, a first condition associated with a first cell group is determined; wherein the first cell group includes at least one cell that can be scheduled by a multi-cell downlink control information (MC-DCI).

[0197] In the embodiments of the present disclosure, the MC-DCI is used to schedule data transmission of multiple cells, and the data transmission of each cell corresponds to one PDSCH and / or one PUSCH.

[0198] ​In the embodiments of the present disclosure, the cells that can be scheduled by the MC-DCI refer to the cells that are simultaneously scheduled by the MC-DCI, that is, the multiple cells that are scheduled by the MC-DCI at the current time. Alternatively, the cells that can be scheduled by the MC-DCI refer to one or more cells that are scheduled by the MC-DCI at different times, but not necessarily the cells that are scheduled by the MC-DCI at the current time. The set of cells that can be scheduled by the MC-DCI can be determined by RRC signaling or in a predefined manner, and the present disclosure does not make any limitation in this regard.

[0199] For example, the set of cells that can be scheduled by the MC-DCI includes cell#1, cell#2, and cell#3, the MC-DCI schedules the data transmission of cell#1 and cell#2 at t1, and the MC-DCI schedules the data transmission of cell#1 and cell#3 at t2.

[0200] The first cell group includes at least one cell that can be scheduled by the MC-DCI. For example, the cells that can be scheduled by the MC-DCI refer to one or more cells that are scheduled by the MC-DCI at different times, the first cell group#1 includes cell#1 and cell#2, and the first cell group#2 includes cell#3.

[0201] In the embodiments of the present disclosure, different first conditions can be associated with different first cell groups. For example, the first condition is that the MC-DCI supports the maximum number of simultaneously schedulable cells, the MC-DCI supports the maximum number of simultaneously schedulable cells in the first cell group#1 is 2, the MC-DCI supports the maximum number of simultaneously schedulable cells in the first cell group#2 is 3, and the like.

[0202] In one possible implementation, the first condition can be at least one of the following: the MC-DCI supports the maximum number of simultaneously schedulable cells; the number of cells that are simultaneously scheduled by the MC-DCI; the maximum number of cells that support the SUL feature in the multiple cells that can be scheduled by the MC-DCI; and the maximum number of cells that do not support the SUL feature in the multiple cells that can be scheduled by the MC-DCI.

[0203] The maximum number of simultaneously schedulable cells supported by the MC-DCI can refer to the maximum number of cells that can be simultaneously scheduled by the MC-DCI at any time. The number of cells that are simultaneously scheduled by the MC-DCI can refer to the number of cells that are simultaneously scheduled by the MC-DCI at any time, and the number of cells is less than or equal to the maximum number of cells. The cells that can be scheduled by the MC-DCI refer to the cells that are simultaneously scheduled by the MC-DCI, that is, the multiple cells that are scheduled by the MC-DCI at the current time. Alternatively, the cells that can be scheduled by the MC-DCI refer to one or more cells that are scheduled by the MC-DCI at different times, but not necessarily the cells that are scheduled by the MC-DCI at the current time.

[0204] For example, for the first cell group #1, it can support the number of simultaneously scheduled cells by the configured MC-DCI equal to N.

[0205] For another example, there are N' sets of the number of simultaneously scheduled cells by the configured MC-DCI supported by the N' first cell groups, the n-th first cell group can support the number of simultaneously scheduled cells by the configured MC-DCI from the n-th set in the N' sets, and the n-th set can be one or more sets in the N' sets.

[0206] In a possible implementation, the first condition can be agreed by a protocol or configured by the base station through signaling, and the disclosure does not limit this.

[0207] In the embodiment of the disclosure, there are two sets of the maximum number of simultaneously scheduled cells by the MC-DCI supported in the three first cell groups, which are set 1 and set 2. The first cell group #1 determines that the maximum number of simultaneously scheduled cells by the MC-DCI is from the set 1, and the first cell group #2 determines that the maximum number of simultaneously scheduled cells by the MC-DCI is from the set 2.

[0208] The above is only an example, and the first condition corresponding to different first cell groups can be agreed by a protocol and / or configured by the base station through signaling, which is not described here.

[0209] In step 302, when the MC-DCI satisfies the first condition, the size of the MC-DCI is determined based on the DCI alignment operation of the first cell in the first cell group.

[0210] In the embodiment of the disclosure, if the MC-DCI satisfies the first condition corresponding to the first cell group, the terminal can deduce the DCI alignment operation in the first cell in the first cell group, so as to determine the size of the MC-DCI.

[0211] For example, the first condition is the maximum number of simultaneously scheduled cells by the MC-DCI, the first condition associated with the first cell group #1 indicates that the maximum number of simultaneously scheduled cells is 2, and the first condition associated with the first cell group #2 indicates that the maximum number of simultaneously scheduled cells is 3. Then, the terminal determines to deduce the DCI alignment operation in the first cell in the first cell group #2 and determine the size of the MC-DCI based on the RRC signaling sent by the base station in the case that the MC-DCI can simultaneously schedule data transmission of 3 cells.

[0212] In a possible implementation, when the number of cells included in the first cell group is multiple, the first cell is the cell with the maximum or minimum cell index value in the first cell group.

[0213] For example, the terminal determines to perform the DCI alignment operation in the first cell in the first cell group #2 in the above embodiment, and determines the size of the MC-DCI. The first cell group #2 includes the cell #2, the cell #4 and the cell #5, and then the terminal can perform the DCI alignment operation in the cell #2, or the terminal can perform the DCI alignment operation in the cell #5.

[0214] In the embodiment of the present disclosure, whether the cell index value selects the largest or the smallest cell can be agreed by the protocol or configured by the base station side through signaling, and the present disclosure does not limit this.

[0215] It should be further pointed out that in the embodiment of the present disclosure, the terminal performs the DCI alignment operation in the serving cell, and the size of the MC-DCI can meet the 3+1 limit condition in the related art. Of course, the limit condition of the size of the DCI can also be 4+1, or other protocol agreed DCI size limit condition, and the present disclosure does not limit this.

[0216] In the embodiment of the present disclosure, the DCI alignment operation performed by the base station side means that the base station aligns the size of the MC-DCI before alignment with the size of the MC-DCI after alignment by zero padding or other methods such as length truncation.

[0217] In step 303, the MC-DCI is received and parsed in the second cell based on the size.

[0218] In the embodiment of the present disclosure, after the terminal side determines the size of the MC-DCI, the MC-DCI can be detected and received in the second cell. The second cell can be any one cell in the first cell group, that is, the second cell can be the first cell or any one cell in the first cell group different from the first cell. Or, the second cell can be irrelevant to the first cell group, that is, the second cell can be any one cell different from the first cell group, and the present disclosure does not limit this.

[0219] In the above embodiment, the terminal can perform the DCI alignment operation in the first cell in the first cell group when the MC-DCI meets the first condition associated with the first cell group, determine the size of the MC-DCI, reduce the blind detection complexity of the terminal, and effectively improve the PDCCH transmission performance.

[0220] Method three, directly determine the first size corresponding to each format of MC-DCI based on the pre-defined method or the method indicated by the base station side signaling.

[0221] The embodiment of the present disclosure provides a DCI receiving method, which refers to Figure 4 as shown in Figure 4is a flow chart of a DCI receiving method according to an embodiment, which can be performed by a terminal, and the method can include the following steps:

[0222] In step 401, a first size corresponding to each format of multi-cell downlink control information (MC-DCI) is determined.

[0223] In the embodiments of the present disclosure, the MC-DCI is used to schedule data transmission of multiple cells, and each cell corresponds to one PDSCH and / or one PUSCH.

[0224] In one possible implementation, the first size corresponding to each format of the MC-DCI is determined based on an indication of signaling sent by a base station.

[0225] Optionally, when the number of cells simultaneously scheduled by the MC-DCI supports dynamic switching, the first size corresponding to each format of the MC-DCI can be determined based on an indication of signaling sent by the base station.

[0226] Optionally, when the number of cells simultaneously scheduled by the MC-DCI does not support dynamic switching, the first size corresponding to each format of the MC-DCI can also be determined based on an indication of signaling sent by the base station. For example, the base station sends RRC signaling to the terminal, and the RRC signaling indicates that the first size corresponding to the MC-DCI format 0_3 is size#1 (assuming n1 bits are occupied), and the first size corresponding to the format 1_3 is size#2 (assuming n2 bits are occupied).

[0227] In another possible implementation, the terminal can determine the first size corresponding to each format of the MC-DCI based on a predefined manner, such as a protocol agreement.

[0228] Optionally, when the number of cells simultaneously scheduled by the MC-DCI supports dynamic switching, the first size corresponding to each format of the MC-DCI can be determined by the terminal based on a protocol agreement.

[0229] Optionally, when the number of cells simultaneously scheduled by the MC-DCI does not support dynamic switching, the first size corresponding to each format of the MC-DCI can also be determined by the terminal based on a protocol agreement.

[0230] For example, the protocol agreement indicates that the size corresponding to the MC-DCI format 0_3 is size#1, and the size corresponding to the format 1_3 is size#2.

[0231] In the embodiments of the present disclosure, the terminal can determine the DCI format that the terminal may need to blindly detect through the RRC signaling sent by the base station. Assuming that the MC-DCI format that may need to be blindly detected is 0_3 and 1_3, the terminal can determine the first size corresponding to the MC-DCI of format 0_3 and 1_3 based on the pre-defined manner or the signaling indication sent by the base station.

[0232] In step 402, the MC-DCI is received and parsed in the serving cell based on the first size.

[0233] In the embodiments of the present disclosure, the terminal receives and parses the MC-DCI in the serving cell according to the first size determined in step 401.

[0234] It should be further noted that in the embodiments of the present disclosure, the size of the MC-DCI needs to meet the 3+1 limit condition. Of course, the limit condition of the DCI size can also be 4+1, or other defined DCI size limit conditions, which are not limited in the present disclosure.

[0235] In the above embodiments, the terminal can determine the first size corresponding to each format of MC-DCI based on the pre-defined manner or the signaling indication sent by the base station, receive and parse the MC-DCI, effectively reduce the blind detection complexity of the terminal by reducing the number of sizes of the same format of MC-DCI, and effectively improve the PDCCH transmission performance.

[0236] It can be understood that in the present disclosure, each format of MC-DCI can correspond to one first size, each format of MC-DCI can correspond to two or more than two first sizes, which also belongs to the protection scope of the present disclosure.

[0237] In some optional embodiments, in the case of supporting dynamic switching of the number of cells simultaneously scheduled by the MC-DCI, the number of cells simultaneously scheduled by the MC-DCI can be limited to at most two.

[0238] That is, the number of cells simultaneously scheduled by the MC-DCI can be switched between the number 1 and the number 2, so as to reduce the number of sizes of the same format of MC-DCI, avoid increasing too many zero bits in order to align with the first size in the DCI alignment process, and thus damage the PDCCH transmission performance.

[0239] In some optional embodiments, the maximum number of cells that can be scheduled by the MC-DCI is N maxIn the scenario, none of the cells that can be scheduled by the MC-DCI supports the SUL feature. That is, when determining the size corresponding to each MC-DCI format, the SUL feature does not need to be considered, so as to reduce the number of sizes of the MC-DCI of the same format, avoid increasing too many zero bits for alignment with the first size in the DCI alignment process, and thus impair the PDCCH transmission performance.

[0240] Alternatively, the number of cells supporting the SUL feature is limited.

[0241] In a possible implementation, of all the cells that can be scheduled by the MC-DCI, only the cell receiving the MC-DCI supports the SUL feature, so as to reduce the number of sizes of the MC-DCI of the same format, avoid increasing too many zero bits for alignment with the first size in the DCI alignment process, and thus impair the PDCCH transmission performance. In another possible implementation, of all the cells that can be scheduled by the MC-DCI, the number of cells supporting the SUL feature is less than or equal to 2, so as to reduce the number of sizes of the MC-DCI of the same format, avoid increasing too many zero bits for alignment with the first size in the DCI alignment process, and thus impair the PDCCH transmission performance.

[0242] In the embodiments of the present disclosure, the cells that can be scheduled by the MC-DCI refer to the cells simultaneously scheduled by the MC-DCI, that is, the multiple cells scheduled by the MC-DCI at the same time. Alternatively, the cells that can be scheduled by the MC-DCI refer to one or more cells scheduled by the MC-DCI at different time instants, but not necessarily the cells scheduled by the MC-DCI at the current time instant.

[0243] In the above embodiments, by reducing the number of sizes corresponding to the MC-DCI of the same format, it can be avoided that too many zero bits are increased for alignment with the first size in the DCI alignment process, and the PDCCH transmission performance is improved.

[0244] In some optional embodiments, the terminal can determine the first size corresponding to each format of the MC-DCI based on the signaling indication sent by the base station, or determine the first size corresponding to each format of the MC-DCI based on the protocol agreement, which is not limited in the present disclosure.

[0245] For the base station side, the DCI alignment operation can be performed by zero padding or other ways, specifically, the size before the MC-DCI alignment can be aligned with the first size after the MC-DCI alignment.

[0246] The following introduces the DCI sending method provided by the present disclosure from the base station side.

[0247] Method one, the base station performs a DCI alignment operation in each first resource range of the serving cell.

[0248] Embodiments of the present disclosure provide a DCI sending method, referring to Figure 5 Figure 5 is a flow chart of a DCI sending method according to an embodiment, which can be executed by a base station, and the method can include the following steps:

[0249] In step 501, a first resource range corresponding to a serving cell and a multi-cell downlink control information (MC-DCI) corresponding to the first resource range are determined.

[0250] In embodiments of the present disclosure, the number of serving cells can be one or more.

[0251] In one possible implementation, in a CA scenario, the number of serving cells corresponding to a terminal can be multiple, and each serving cell can determine a corresponding first resource range.

[0252] In embodiments of the present disclosure, the MC-DCI is used to schedule data transmission of multiple cells, and the data transmission of each cell corresponds to one PDSCH and / or one PUSCH.

[0253] In one possible implementation, the first resource range corresponding to a serving cell can include at least one starting resource unit identifier and a number of continuous resource units corresponding to each starting resource unit identifier.

[0254] Wherein, the starting resource unit can be a starting time domain resource unit and / or a starting frequency domain resource unit, which is not limited by the present disclosure. In addition, the number of continuous resource units can be a continuous time domain resource unit and / or a continuous frequency domain resource unit, which is also not limited by the present disclosure.

[0255] Wherein, the first resource range can be continuous or discontinuous in time domain and / or frequency domain, which is also not limited by the present disclosure. For example, the first resource range is discontinuous in time domain, the first resource range #1 corresponding to the serving cell includes slot #0, slot #2, the first resource range #2 includes slot #4, slot #6, and so on. For another example, the first resource range is continuous in time domain, the first resource range #1 corresponding to the serving cell includes slot #0, slot #1, the first resource range #2 includes slot #2, slot #3, and so on.

[0256] ​In another possible implementation, the first resource range corresponding to the serving cell can comprise a set of resource unit identifiers. Similarly, the resource unit can be a time domain resource unit and / or a frequency domain resource unit, which is not limited in the present disclosure. In addition, the first resource range can be continuous or discontinuous in the time domain and / or the frequency domain, which is also not limited in the present disclosure.

[0257] In one possible implementation, the set of resource unit identifiers can comprise, but is not limited to, at least one of the following: a set of search space (SS) identifiers; a set of bandwidth part (BWP) identifiers; a set of control-resource set (CORESET) identifiers.

[0258] Preferably, the set of resource unit identifiers can comprise a set of SS identifiers. For example, the first resource range corresponding to the serving cell is SS#1, SS#3. Accordingly, the terminal subsequently deduces the DCI alignment operation within SS#1, determines the size of the MC-DCI within SS#1, and deduces the DCI alignment operation within SS#3, determines the size of the MC-DCI within SS#3.

[0259] In one possible implementation, the first resource range described above can be a time domain resource range and / or a frequency domain resource range.

[0260] In one possible implementation, the first resource range can be agreed by a protocol, or the first resource range can be configured by the base station through signaling, which is not limited in the present disclosure.

[0261] For example, the first resource range can be a time domain resource range, and the time domain resource range can be in units of frames, slots, symbols, etc.

[0262] For example, the first resource range corresponding to the serving cell in units of slots can determine the starting slot of each first resource range of the serving cell and the number of slots included in each first resource range by means of protocol agreement or by means of signaling sent by the base station, for example, the index value of the starting slot is even, and each first resource range includes 2 slots, as shown in Figure 2B , the first resource range of the serving cell is continuous in the time domain, the first resource range #1 corresponding to the serving cell includes slot#0, slot#1, the first resource range #2 corresponding to the serving cell includes slot#2, slot#3, and so on.

[0263] For example, the first resource range can be a frequency domain resource range, which can be in units of a BWP, a component carrier (CC), or a band.

[0264] For example, the first resource range corresponding to a serving cell in units of a BWP can determine the BWP index value included in each first resource range of the serving cell by means of protocol agreement or signaling sent by the base station, and the first resource range of the serving cell can be discontinuous in the frequency domain. Figure 2C As shown in the figure, the first resource range #1 corresponding to the serving cell includes {BWP#0, BWP#2}, the first resource range #2 corresponding to the serving cell includes {BWP#4, BWP#6}, and so on.

[0265] The above is only an example, and the first resource range can also be a time domain resource range and a frequency domain resource range, which is not limited in the disclosure.

[0266] In step 502, the DCI alignment operation is performed in each first resource range to determine the size of the MC-DCI.

[0267] In the related art, the DCI alignment operation and the size limitation of the DCI are based on each scheduled cell per cell, that is, the DCI alignment operation is performed in each serving cell, and the 3+1 limitation condition needs to be met. In the present application, the base station performs the DCI alignment operation in each first resource range of the serving cell, and the size of the DCI in each first resource range meets the 3+1 limitation condition or other limitation conditions, thereby determining the size of the MC-DCI.

[0268] In the embodiment of the disclosure, the 3+1 limitation condition of the size of the MC-DCI in each first resource range of the serving cell by the base station means that the number of DCI size types scrambled by C-RNTI configured in each first resource range in the serving cell does not exceed 3, and the total number of DCI size types configured in each first resource range of the serving cell does not exceed 4.

[0269] In the embodiment of the disclosure, the limitation condition of the size of the DCI in each first resource range of the serving cell by the base station can also be 4+1 or other defined DCI size limitation conditions, which is not limited in the present application.

[0270] In the embodiments of the present disclosure, the base station performs the alignment operation in each first resource range, which means that the base station aligns the size of the MC-DCI before alignment with the size of the MC-DCI after alignment by zero padding or other methods, such as length truncation.

[0271] For example, the size of the MC-DCI before alignment is n1 bits, and the size of the MC-DCI after alignment occupies n2 bits, where n2 is greater than n1. In this case, the base station needs to add multiple zero bits based on the size of the MC-DCI before alignment until the size of the MC-DCI reaches n2 bits.

[0272] For another example, the size of the MC-DCI before alignment is n1 bits, and the size of the MC-DCI after alignment occupies n2 bits, where n2 is less than n1. In this case, the base station needs to truncate the size of the MC-DCI based on the size of the MC-DCI before alignment so that the size of the MC-DCI reaches n2 bits.

[0273] In step 503, the MC-DCI is sent to the terminal based on the size.

[0274] In the above embodiments, the DCI alignment operation is performed in the first resource range of the serving cell, thereby reducing the number of bits occupied by the MC-DCI, reducing the number of zero bits added in the DCI alignment process, reducing the blind detection complexity of the terminal, and improving the PDCCH transmission performance.

[0275] In some optional embodiments, the first resource range corresponding to the serving cell can be determined in the following ways:

[0276] In the first way, the first resource range is determined based on at least one starting resource unit identifier and the number of continuous resource units corresponding to each starting resource unit identifier.

[0277] In the first way, the first resource range is determined based on at least one starting resource unit identifier and the number of continuous resource units corresponding to each starting resource unit identifier.

[0278] In the second way, the first resource range is determined based on a set of resource unit identifiers.

[0279] In the embodiments of the present disclosure, the first resource range can be a continuous time domain resource, or a discontinuous time domain resource, and / or the first resource range can be a continuous frequency domain resource, or a discontinuous frequency domain resource, and the present disclosure does not limit the same.

[0280] The resource unit identifier set may include, but is not limited to, at least one of the following: SS identifier set; BWP identifier set; CORESET identifier set. Preferably, the resource unit identifier set may include the SS identifier set.

[0281] The aforementioned first resource scope can be agreed upon by the protocol or configured by the base station through signaling; this disclosure does not limit this.

[0282] In the above embodiments, the first resource range corresponding to the serving cell can be determined in the above manner, reducing the number of zero bits added during the DCI alignment process, reducing the complexity of terminal blind detection, and effectively improving the PDCCH transmission performance.

[0283] In some alternative embodiments, if any two MC-DCIs correspond to different formats, the base station performs DCI alignment operations on the two MC-DCIs in different first resource ranges. The terminal side deduces the DCI alignment operation in different first resource ranges, further reducing the complexity of blind detection by the terminal.

[0284] And / or, if any two DCIs correspond to different sizes before the DCI alignment operation is performed, the base station performs the DCI alignment operation on the two MC-DCIs in different first resource ranges. The terminal side deduces the DCI alignment operation in different first resource ranges, further reducing the complexity of blind detection by the terminal.

[0285] In the above embodiments, the number of zero bits added during the DCI alignment process can also be effectively reduced, the complexity of terminal blind detection can be reduced, and the transmission performance of PDCCH can be effectively improved.

[0286] Method 2 involves performing DCI alignment operations on cells within different cell groups for MC-DCIs of different sizes before DCI alignment.

[0287] This disclosure provides a DCI transmission method, referring to... Figure 6 As shown, Figure 6 This is a flowchart illustrating a DCI transmission method according to an embodiment, which can be executed by a base station. The method may include the following steps:

[0288] In step 601, the multi-cell downlink control information (MC-DCI) is determined.

[0289] In this embodiment of the disclosure, MC-DCI is used to schedule data transmission of multiple cells, and the data transmission of each cell corresponds to a PDSCH and / or a PUSCH.

[0290] In step 602, a first condition associated with a first cell group is determined; wherein the first cell group comprises at least one cell that can be scheduled by the MC-DCI.

[0291] In the embodiments of the present disclosure, the cell that can be scheduled by the MC-DCI refers to the cell that is simultaneously scheduled by the MC-DCI, i.e., the multiple cells that are scheduled by the MC-DCI at the same time. Alternatively, the cell that can be scheduled by the MC-DCI refers to one or more cells that are scheduled by the MC-DCI at different time instants, but not necessarily the cell that is scheduled by the MC-DCI at the current time instant. The set of cells that can be scheduled by the MC-DCI can be determined by RRC signaling or by a predefined manner, which is not limited in the present disclosure.

[0292] In the embodiments of the present disclosure, different first conditions can be associated with different first cell groups.

[0293] In one possible implementation, the first condition can be at least one of the following: a maximum number of simultaneously schedulable cells supported by the MC-DCI; a number of cells simultaneously scheduled by the MC-DCI; a maximum number of cells supporting SUL feature among the multiple cells that can be scheduled by the MC-DCI; and a maximum number of cells not supporting SUL feature among the multiple cells that can be scheduled by the MC-DCI.

[0294] The maximum number of simultaneously schedulable cells supported by the MC-DCI can refer to the maximum number of cells that can be simultaneously scheduled by the MC-DCI at any time instant. The number of cells simultaneously scheduled by the MC-DCI can refer to the number of cells that are simultaneously scheduled by the MC-DCI at any time instant, and the number of cells is less than or equal to the maximum number of cells. The cell that can be scheduled by the MC-DCI refers to the cell that is simultaneously scheduled by the MC-DCI, i.e., the multiple cells that are scheduled by the MC-DCI at the same time. Alternatively, the cell that can be scheduled by the MC-DCI refers to one or more cells that are scheduled by the MC-DCI at different time instants, but not necessarily the cell that is scheduled by the MC-DCI at the current time instant.

[0295] In one possible implementation, the first condition can be agreed by a protocol or configured by the base station through signaling, which is not limited in the present disclosure.

[0296] In step 603, when the MC-DCI satisfies the first condition, the size of the MC-DCI is determined based on the DCI alignment operation performed in the first cell in the first cell group.

[0297] In the embodiments of the present disclosure, when the MC-DCI satisfies the first condition corresponding to the first cell group, the base station can determine the size of the MC-DCI based on the DCI alignment operation performed in the first cell in the first cell group.

[0298] In a possible implementation, when the number of cells included in the first cell group is multiple, the first cell is the cell with the maximum or minimum cell index value in the first cell group.

[0299] It should be further noted that when the base station performs the DCI alignment operation in the first cell, the size of the MC-DCI needs to meet a preset restriction condition. Of course, the preset restriction condition can be a 3+1 restriction condition, or can also be a 4+1, or other protocol agreed DCI size restriction condition, which is not limited by the present application.

[0300] In the embodiments of the present disclosure, performing the alignment operation means that the base station aligns the size of the MC-DCI to be sent with the size corresponding to the MC-DCI format by zero padding or other methods such as length truncation.

[0301] In step 604, the MC-DCI is sent to the terminal based on the size.

[0302] In the embodiments of the present disclosure, the base station can be the base station of the second cell, where the second cell can be any one of the cells in the first cell group, that is, the second cell can be the first cell or any one of the cells in the first cell group different from the first cell. Alternatively, the second cell can be irrelevant to the first cell group, that is, the second cell can be any one of the cells different from the first cell group, which is not limited by the present disclosure.

[0303] In the above embodiments, when the MC-DCI meets the first condition associated with the first cell group, the base station can perform the DCI alignment operation in the first cell in the first cell group to determine the size of the MC-DCI, effectively reducing the number of zero bits added in the DCI alignment process, reducing the blind detection complexity of the terminal, and improving the PDCCH transmission performance.

[0304] Method three, based on a predefined manner or a manner indicated by the base station to the terminal through signaling, to determine the first size corresponding to each format of MC-DCI.

[0305] The embodiments of the present disclosure provide a DCI sending method, referring to Figure 7 , which is a flow chart of a DCI sending method according to an embodiment, which can be performed by a base station. The method can include the following steps: Figure 7

[0306] In step 701, a multi-cell downlink control information (MC-DCI) is determined.

[0307] ​In the embodiments of the present disclosure, the MC-DCI is used to schedule data transmission of multiple cells, and each number of cell transmission corresponds to one PDSCH and / or one PUSCH.

[0308] In step 702, the MC-DCI is sent to the terminal based on the first size corresponding to the format of the MC-DCI.

[0309] In one possible implementation, the base station can send signaling to the terminal through which the first size corresponding to each format of the MC-DCI is indicated.

[0310] Optionally, the base station can send signaling to the terminal through which the first size corresponding to each format of the MC-DCI is indicated when the number of cells simultaneously scheduled by the MC-DCI is dynamically switched.

[0311] Optionally, the base station can also send signaling to the terminal through which the first size corresponding to each format of the MC-DCI is indicated when the number of cells simultaneously scheduled by the MC-DCI is not dynamically switched.

[0312] In another possible implementation, the base station side can determine the first size corresponding to each format of the MC-DCI based on a protocol agreement.

[0313] Optionally, the base station can determine the first size corresponding to each format of the MC-DCI based on a protocol agreement when the number of cells simultaneously scheduled by the MC-DCI is dynamically switched.

[0314] Optionally, the base station can also determine the first size corresponding to each format of the MC-DCI based on a protocol agreement when the number of cells simultaneously scheduled by the MC-DCI is not dynamically switched.

[0315] In the embodiments of the present disclosure, performing the alignment operation means that the base station aligns the size of the MC-DCI before alignment with the first size corresponding to the format of the MC-DCI, i.e., the first size corresponding to the format of the MC-DCI, through zero padding or other methods such as length truncation.

[0316] In the embodiments of the present disclosure, the base station performs the DCI alignment operation in the serving cell to align the size of the MC-DCI before alignment with the first size corresponding to the format of the MC-DCI. The size of the MC-DCI needs to meet a preset restriction condition. Of course, the preset restriction condition can be a 3+1 restriction condition, or it can also be a 4+1 or other protocol agreed DCI size restriction condition, which is not limited by the present disclosure.

[0317] In the above embodiments, by reducing the number of sizes of the MC-DCI of the same format, the number of zero bits added in the DCI alignment process is reduced, the terminal blind detection complexity is reduced, and the PDCCH transmission performance is improved.

[0318] It can be understood that in the present disclosure, each format of MC-DCI can correspond to one first size, each format of MC-DCI can correspond to two or more first sizes, and also belongs to the protection scope of the present disclosure.

[0319] In some optional embodiments, in the case of supporting dynamic switching of the number of cells simultaneously scheduled by the MC-DCI, the number of cells simultaneously scheduled by the MC-DCI can be limited to at most two.

[0320] That is, the number of cells simultaneously scheduled by the MC-DCI can be switched between the number 1 and the number 2, so as to reduce the number of sizes of the MC-DCI of the same format, avoid adding too many zero bits in the DCI alignment process for alignment with the first size, and thus damage the PDCCH transmission performance.

[0321] In some optional embodiments, the maximum number of cells that can be scheduled by the MC-DCI is N max In the case of the scenario, all cells that can be scheduled by the MC-DCI can not support the SUL feature. That is, when determining the size corresponding to each MC-DCI format, the SUL feature does not need to be considered, so as to reduce the number of sizes of the MC-DCI of the same format, avoid adding too many zero bits in the DCI alignment process for alignment with the first size, and thus damage the PDCCH transmission performance.

[0322] Alternatively, the number of cells supporting the SUL feature is limited.

[0323] In one possible implementation, among all cells that can be scheduled by the MC-DCI, only the cell receiving the MC-DCI can support the SUL feature, so as to reduce the number of sizes of the MC-DCI of the same format, avoid adding too many zero bits in the DCI alignment process for alignment with the first size, and thus damage the PDCCH transmission performance. In another possible implementation, among all cells that can be scheduled by the MC-DCI, the number of cells supporting the SUL feature is less than or equal to 2, so as to reduce the number of sizes of the MC-DCI of the same format, avoid adding too many zero bits in the DCI alignment process for alignment with the first size, and thus damage the PDCCH transmission performance.

[0324] In the embodiments of the present disclosure, the cells that can be scheduled by the MC-DCI refer to the cells that are simultaneously scheduled by the MC-DCI, that is, the multiple cells that are scheduled by the MC-DCI at the same time. Alternatively, the cells that can be scheduled by the MC-DCI refer to one or more cells that are scheduled by the MC-DCI at different time instants, but not necessarily the cells that are scheduled by the MC-DCI at the current time instant.

[0325] In the above embodiments, the number of sizes of the MC-DCI in the same format is reduced, and the number of zero bits that are added for alignment with the first size in the DCI alignment process can be reduced, thereby improving the PDCCH transmission performance.

[0326] In some optional embodiments, the terminal can determine the first size corresponding to each format of the MC-DCI based on the signaling indication sent by the base station, or determine the first size corresponding to each format of the MC-DCI based on the protocol agreement, which is not limited in the present disclosure.

[0327] For the base station side, the DCI alignment operation can be performed by zero padding or other methods, specifically, the size of the MC-DCI before alignment can be aligned with the first size of the MC-DCI after alignment.

[0328] In order to facilitate the understanding of the DCI receiving and transmitting method provided by the present disclosure, the above scheme is further illustrated as follows.

[0329] In embodiment 1, it is assumed that the terminal is a Rel-18 and subsequent version terminal, and the terminal receives the DCI for scheduling the data transmission of multiple cells, that is, the MC-DCI, and the terminal receives the PDSCH of the multiple cells or transmits the PUSCH of the multiple cells based on the indication information corresponding to the DCI.

[0330] In the related mechanism, the DCI alignment operation is configured based on each serving cell, the DCI alignment operation is performed by the base station side in the serving cell, the DCI alignment operation is deduced by the terminal side, and the number of DCI sizes monitored by the terminal satisfies the 3+1 limit. If this mechanism is directly applied to the MC-DCI scenario, the number of DCI bits added by the zero padding for the DCI size alignment will be greatly increased, which will reduce the PDCCH transmission performance.

[0331] In the present embodiment, the first resource range can be determined in the serving cell, and the base station side performs the DCI alignment operation in each first resource range. In the first resource range, the terminal deduces the DCI alignment operation and determines the size of the MC-DCI.

[0332] In the embodiments of the present disclosure, the DCI size limit condition can be "3+1", that is, the number of DCI sizes scrambled by C-RNTI configured by the terminal in the first resource range in the service cell does not exceed 3, and the total number of DCI sizes configured by the terminal in the first resource range in the service cell does not exceed 4. The DCI size budget limit can also be "4+1", or other defined DCI size budget limit, which is not limited by the present application.

[0333] In a possible implementation, the first resource range can be a time domain resource range, and a measurement unit of the time domain resource range can be a frame, a slot, a symbol, or the like. The time domain resource range can be a continuous time domain resource, or a discontinuous time domain resource. The time domain resource can be measured by one or more starting time domain positions and a continuous time domain length corresponding to each starting time domain position, or by a set of frame IDs, slot IDs, or symbol IDs. The time domain resource can be determined by a predefined manner (that is, a protocol-defined manner), or configured by signaling sent by a base station.

[0334] Referring to FIG. 1, Figure 8A In the example shown in FIG. 1, the starting position of the frame corresponding to the even frame ID is the starting position of the time domain resource, and the length of 2 frames is the continuous length of the time domain resource. The first resource range is defined.

[0335] In a possible implementation, the first resource range can be a frequency domain resource range, and a measurement unit of the frequency domain resource range can be a BWP, a resource block (RB), a resource block group (RBG), or a resource element (RE). The frequency domain resource range can be a continuous frequency domain resource, or a discontinuous frequency domain resource. The frequency domain resource can be measured by one or more starting frequency domain positions and a continuous frequency domain length, or by a set of BWP IDs, a set of RB IDs, or a set of RE IDs. The frequency domain resource can be determined by a predefined manner, or configured by signaling.

[0336] Referring to FIG. 2, Figure 8B In the example shown in FIG. 2, the first resource range is defined by a set of BWP IDs. The first resource range #1 includes {BWP#0, BWP#1}, and the first resource range #2 includes {BWP#2, BWP#3}.

[0337] The embodiment introduces a DCI alignment mechanism in a first resource range in a serving cell, and the base station performs a DCI alignment operation based on each first resource range, thereby effectively reducing the number of zero bits filled by MC-DCI and improving the PDCCH transmission performance.

[0338] In embodiment 2, it is assumed that the terminal is a Rel-18 and later version terminal, and the terminal receives DCI for scheduling data transmission of multiple cells, i.e., MC-DCI, and the terminal receives PDSCH of multiple cells or transmits PUSCH of multiple cells based on the indication information corresponding to the DCI.

[0339] In the related mechanism, the DCI alignment process is based on the configuration of the serving cell. After the base station side performs the DCI alignment process in the serving cell, the terminal side deduces the DCI alignment operation, and the number of DCI size types monitored by the terminal satisfies the 3+1 limit. If this mechanism is directly applied to the MC-DCI scenario, the number of DCI bits increased by the DCI size alignment through zero padding will be greatly increased, which will reduce the PDCCH transmission performance.

[0340] In the embodiment, for a specific serving cell group, a first condition corresponding to the size of the MC-DCI is limited.

[0341] In a possible implementation, the first condition can be at least one of the following: the MC-DCI supports the maximum number of simultaneously schedulable cells; the number of cells simultaneously scheduled by the MC-DCI; the maximum number of cells supporting the supplementary uplink (SUL) feature among the multiple cells that can be scheduled by the MC-DCI; and the maximum number of cells that do not support the SUL feature among the multiple cells that can be scheduled by the MC-DCI.

[0342] In the embodiment of the present disclosure, the cells that can be scheduled by the MC-DCI refer to the cells simultaneously scheduled by the MC-DCI, i.e., the multiple cells real-time scheduled by the MC-DCI. Alternatively, the cells that can be scheduled by the MC-DCI refer to one or more cells scheduled by the MC-DCI at different time instants, but not necessarily the cells scheduled by the MC-DCI at the current time instant.

[0343] In a possible implementation, different first conditions can be associated with different first cell groups. Referring to FIG. 8, different first conditions can be associated with different first cell groups. Figure 9 As shown in FIG. 8, different first conditions can be associated with different first cell groups.

[0344] Wherein, the first cell group #1 includes cell #0, the maximum number of simultaneously scheduled cells supported is 4, the first cell group #2 includes cell #1 and the maximum number of simultaneously scheduled cells supported is 3, and so on.

[0345] It should be noted that when the number of cells included in the first cell group is multiple, the first cell is the cell with the maximum or minimum cell index value in the first cell group.

[0346] This embodiment is based on the DCI alignment mechanism in the multiplexing related technical solution, by limiting the first condition configurable by the first cell group, the number of DCI sizes configured in the first cell group is reduced, the DCI blind detection overhead is effectively reduced, and the PDCCH transmission performance is improved.

[0347] Embodiment 3, assuming that the terminal is a Rel-18 and subsequent version terminal, and the terminal receives a DCI for scheduling data transmission of multiple cells, i.e. MC-DCI, and the terminal receives PDSCH of multiple cells or transmits PUSCH of multiple cells based on the indication information corresponding to the DCI.

[0348] In the related mechanism, the DCI alignment operation (alignment process) is configured based on each serving cell, and the base station side performs the DCI alignment operation in the serving cell, and the terminal side deduces the DCI alignment operation, and the number of DCI size types monitored by the terminal satisfies the 3+1 limit. If this mechanism is directly applied to the MC-DCI scene, the number of DCI bits increased by zero padding to realize DCI size alignment will be greatly increased, which will reduce the PDCCH transmission performance.

[0349] In this embodiment, the first size corresponding to each format of MC-DCI can be determined by protocol agreement or base station signaling indication.

[0350] A possible implementation, in the case where the maximum number of cells that can be scheduled by MC-DCI is N max In this case, the number of cells that can be scheduled is limited, and exemplarily, dynamic switching of the number of scheduled cells is supported up to two, i.e. the number of cells that can be scheduled by MC-DCI is determined from up to two optional cell numbers.

[0351] A possible implementation, in the case where the maximum number of cells that can be scheduled by MC-DCI is N max In this case, exemplarily, all cells in the multi-carrier scheduling scenario do not support SUL characteristics. Or, the cells supporting SUL characteristics are limited, for example, only the cell receiving DCI supports SUL characteristics, and up to two cells support PUSCH transmission on SUL.

[0352] ReferenceFigure 10 As shown, the number of cells scheduled by the MC-DCI is irrelevant to the serving cell. The number of cells that can be scheduled by Cell#0 to cell#7 is n, and n is a positive integer.

[0353] This embodiment reduces the number of DCI size configurations by limiting the number of cells that can be scheduled by the serving cell or configuring the number of SULs on the basis of multiplexing the existing DCI alignment mechanism, effectively reduces the DCI blind detection overhead, and improves the PDCCH transmission performance.

[0354] Corresponding to the foregoing application function implementation method embodiment, the disclosure also provides an application function implementation device embodiment.

[0355] Reference Figure 11 , Figure 11 is a downlink control information DCI receiving device block diagram according to an exemplary embodiment, which is applied to a terminal and includes:

[0356] The first determination module 1101 is configured to determine a first resource range corresponding to a serving cell.

[0357] The second determination module 1102 is configured to determine the size of the multi-cell downlink control information MC-DCI based on the DCI alignment operation performed in each of the first resource ranges.

[0358] The first receiving module 1103 is configured to receive and parse the MC-DCI based on the size.

[0359] Reference Figure 12 , Figure 12 is a downlink control information DCI receiving device block diagram according to an exemplary embodiment, which is applied to a terminal and includes:

[0360] The third determination module 1201 is configured to determine a first condition associated with a first cell group; wherein the first cell group includes at least one cell that can be scheduled by the multi-cell downlink control information MC-DCI.

[0361] The fourth determination module 1202 is configured to determine the size of the MC-DCI based on the DCI alignment operation of the first cell in the first cell group when the MC-DCI meets the first condition.

[0362] The second receiving module 1203 is configured to receive and parse the MC-DCI at the second cell.

[0363] Reference Figure 13 , Figure 13is a downlink control information DCI receiving device block diagram according to an exemplary embodiment, the device is applied to a terminal, comprising:

[0364] The fifth determination module 1301 is configured to determine a first size corresponding to multi-cell downlink control information MC-DCI of each format;

[0365] The third receiving module 1302 is configured to receive and parse the MC-DCI in the serving cell based on the first size.

[0366] Referring to Figure 14 , Figure 14 is a downlink control information DCI sending device block diagram according to an exemplary embodiment, the device is applied to a base station, comprising:

[0367] The sixth determination module 1401 is configured to determine a first resource range corresponding to a serving cell and a multi-cell downlink control information MC-DCI corresponding to the first resource range;

[0368] The first alignment module 1402 is configured to perform a DCI alignment operation in each of the first resource range to determine a size of the MC-DCI;

[0369] The first sending module 1403 is configured to send the MC-DCI to a terminal based on the size.

[0370] Referring to Figure 15 , Figure 15 is a downlink control information DCI sending device block diagram according to an exemplary embodiment, the device is applied to a base station, comprising:

[0371] The seventh determination module 1501 is configured to determine a multi-cell downlink control information MC-DCI;

[0372] The eighth determination module 1502 is configured to determine a first condition associated with a first cell group; wherein the first cell group includes at least one cell that can be scheduled by the MC-DCI;

[0373] The second alignment module 1503 is configured to determine a size of the MC-DCI based on a DCI alignment operation performed by a first cell in the first cell group when the MC-DCI meets the first condition;

[0374] The second sending module 1504 is configured to send the MC-DCI to a terminal based on the size.

[0375] Referring to Figure 16 , Figure 16is a downlink control information DCI sending device block diagram according to an exemplary embodiment, the device is applied to a base station, comprising:

[0376] A ninth determining module 1601 is configured to determine a first size corresponding to each format of multi-cell downlink control information MC-DCI;

[0377] A third sending module 1602 is configured to send the MC-DCI to a terminal with the first size corresponding to the format of the MC-DCI.

[0378] For the device embodiment, since it basically corresponds to the method embodiment, the related part can be referred to the part of the method embodiment. The device embodiment described above is only illustrative, wherein the units described above as separate components can be or can not be physically separated, and the components displayed as units can be or can not be physical units, that is, they can be located in one place, or can be distributed on multiple network units. Some or all of the modules can be selected to achieve the purpose of the present disclosure according to actual needs. Those skilled in the art can understand and implement it without creative labor.

[0379] Correspondingly, the present disclosure also provides a computer readable storage medium, the storage medium stores a computer program, the computer program is used for executing the above-mentioned downlink control information DCI receiving method for terminal side.

[0380] Correspondingly, the present disclosure also provides a computer readable storage medium, the storage medium stores a computer program, the computer program is used for executing the above-mentioned downlink control information DCI sending method for base station side.

[0381] Correspondingly, the present disclosure also provides a downlink control information DCI receiving device, comprising:

[0382] A processor;

[0383] A memory for storing processor executable instructions;

[0384] The processor is configured to execute the above-mentioned downlink control information DCI receiving method for terminal side.

[0385] Figure 17 is a block diagram of a downlink control information DCI receiving device 1700 according to an exemplary embodiment. For example, the device 1700 can be a mobile phone, a tablet computer, an electronic book reader, a multimedia playing device, a wearable device, a vehicle-mounted user device, an ipad, a smart television, etc. terminal.

[0386] Referring toFigure 17 The apparatus 1700 can include one or more of the following components: a processing component 1702, a memory 1704, a power supply component 1706, a multimedia component 1708, an audio component 1710, an input / output (I / O) interface 1712, a sensor component 1716 and a communication component 1718.

[0387] The processing component 1702 usually controls overall operations of the apparatus 1700, such as operations associated with display, phone call, data random access, camera operation and recording operation. The processing component 1702 can include one or more processors 1720 to execute instructions to complete all or part of the steps of the downlink control information DCI receiving method described above. Further, the processing component 1702 can include one or more modules to facilitate interaction between the processing component 1702 and other components. For example, the processing component 1702 can include a multimedia module to facilitate the interaction between the multimedia component 1708 and the processing component 1702. For another example, the processing component 1702 can include a module to read executable instructions stored in the memory to implement one of the steps of the downlink control information DCI receiving method provided by the embodiments described above.

[0388] The memory 1704 is configured to store various types of data to support operations of the apparatus 1700. Examples of these data include instructions for any application or methods operating on the apparatus 1700, contact data, phonebook data, messages, pictures, videos, and so on. The memory 1704 can be implemented by any type of volatile or nonvolatile storage devices or a combination thereof, 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 storage, flash memory, magnetic disk or optical disk.

[0389] The power supply component 1706 supplies electrical power for the various components of the apparatus 1700. The power supply component 1706 can include a power supply management system, one or more power supplies, and other components associated with generating, managing and distributing power for the apparatus 1700.

[0390] The multimedia component 1708 includes a display screen providing an output interface between the apparatus 1700 and a user. In some embodiments, the multimedia component 1708 includes a front-facing camera and / or a rear-facing camera. The front-facing camera and / or the rear-facing camera can receive external multimedia data when the apparatus 1700 is in an operation mode, such as a shooting mode or a video mode. Each of the front-facing camera and the rear-facing camera can be a fixed optical lens system or have a focal length and optical zoom capability.

[0391] The audio component 1710 is configured to output and / or input audio signals. For example, the audio component 1710 includes a microphone (MIC) that is configured to receive an external audio signal when the device 1700 is in an operation mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signal can be further stored in the memory 1704 or transmitted via the communication component 1718. In some embodiments, the audio component 1710 also includes a speaker for outputting audio signals.

[0392] The I / O interface 1712 provides an interface between the processing component 1702 and peripheral interface modules, which can be a keypad, a click wheel, buttons, and the like. The buttons can include, but are not limited to, a home button, a volume button, a start button, and a lock button.

[0393] The sensor component 1716 includes one or more sensors for providing various state assessments for the device 1700. For example, the sensor component 1716 can detect an open / closed state of the device 1700, relative positioning of components, such as a display and a keypad of the device 1700, a change in position of the device 1700 or a component of the device 1700, presence or absence of user contact with the device 1700, a change in orientation or acceleration / deceleration of the device 1700, and a temperature change of the device 1700. The sensor component 1716 can include a proximity sensor configured to detect presence of a nearby object without any physical touch. The sensor component 1716 can further include a light sensor, such as a CMOS or CCD image sensor, for use in an imaging application. In some embodiments, the sensor component 1716 can further include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

[0394] The communication component 1718 is configured to facilitate wired or wireless communication between the device 1700 and other devices. The device 1700 can access a wireless network based on a communication standard, such as Wi-Fi, 2G, 3G, 4G, 5G, or 6G, or a combination thereof. In an example embodiment, the communication component 1718 receives broadcast signals or broadcast-related information from an external broadcasting management system via a broadcast channel. In an example embodiment, the communication component 1718 further includes a Near Field Communication (NFC) module to facilitate short-range communication. For example, the NFC module can be implemented based on Radio Frequency Identification (RFID) technology, infrared data association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology, and other technology.

[0395] In an exemplary embodiment, the apparatus 1700 can be implemented by one or more application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), controllers, micro-controllers, microprocessors or other electronic components, for performing any of the above-described terminal-side downlink control information (DCI) reception methods.

[0396] In an exemplary embodiment, a non-transitory machine-readable storage medium including instructions, such as the memory 1004 including instructions, is also provided, which can be executed by the processor 1020 of the apparatus 1000 to complete the above-described downlink control information (DCI) reception method. For example, the non-transitory computer-readable storage medium can be a ROM, a random access memory (RAM), a CD-ROM, a magnetic tape, a floppy disc, and an optical data storage device, etc.

[0397] Accordingly, the present disclosure also provides a downlink control information (DCI) transmission apparatus, comprising:

[0398] a processor;

[0399] a memory for storing processor-executable instructions;

[0400] wherein the processor is configured to perform any of the above-described base station-side downlink control information (DCI) transmission methods.

[0401] As shown in Figure 18 , Figure 18 is a structure diagram of a downlink control information (DCI) transmission apparatus 1800 according to an exemplary embodiment. The apparatus 1800 can be provided as a base station. Referring to Figure 18 , the apparatus 1800 comprises a processing component 1822, a wireless transmit / receive component 1824, an antenna component 1826, and a signal processing part specific to a wireless interface, and the processing component 1822 can further comprise at least one processor.

[0402] One of the processors in the processing component 1822 can be configured to perform any of the above-described downlink control information (DCI) transmission methods.

[0403] Other embodiments of the present disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the features disclosed herein. The present disclosure is intended to cover any variations, uses, or adaptations of the present disclosure following the general principles thereof and including such departures from the present disclosure that come within known use or custom in the art. The specification and examples are to be regarded as exemplary only, and the true scope and spirit of the present disclosure are indicated by the following claims.

[0404] It should be understood that the present disclosure is not limited to the precise construction that has been described above and shown in the accompanying drawings, and that various modifications and changes can be made by those of ordinary skill in the art without departing from the scope of this disclosure. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A method for receiving downlink control information (DCI), characterized in that, The method is performed by a terminal and includes: determining a first resource range corresponding to a serving cell; determining a size of a multi-cell downlink control information (MC-DCI) based on a DCI alignment operation in each of the first resource ranges; receiving and parsing the MC-DCI based on the size.

2. The method of claim 1, wherein, The determination of the first resource range corresponding to the serving cell includes any of: determining the first resource range based on at least one starting resource element identifier and a number of continuous resource elements corresponding to each of the starting resource element identifiers; determining the first resource range based on a set of resource element identifiers.

3. The method of claim 2, wherein, The set of resource element identifiers includes at least one of: a set of search space (SS) identifiers; a set of bandwidth part (BWP) identifiers; a set of control resource (CORESET) identifiers.

4. The method according to any one of claims 1 to 3, characterized in that, The first resource range is a time domain resource range and / or a frequency domain resource range.

5. The method according to any one of claims 1 to 3, characterized in that, If any two of the MC-DCIs correspond to different formats, the terminal does not expect to determine the size of the two MC-DCIs in the same first resource range; and / or, If any two of the MC-DCIs correspond to different sizes before the DCI alignment operation, the terminal does not expect to determine the size of the two MC-DCIs in the same first resource range. 6.A downlink control information (DCI) receiving method, comprising: The method is performed by a terminal and includes: determining a first condition associated with a first cell group; wherein the first cell group includes at least one cell that can be scheduled by a multi-cell downlink control information (MC-DCI); when the MC-DCI satisfies the first condition, determining a size of the MC-DCI based on a DCI alignment operation of a first cell in the first cell group; receiving and parsing the MC-DCI at a second cell based on the size.

7. The method of claim 6, wherein, The first condition is at least one of: a maximum number of simultaneously schedulable cells supported by the MC-DCI; a number of cells simultaneously scheduled by the MC-DCI; a maximum number of cells supporting a supplementary uplink (SUL) feature among a plurality of cells that can be scheduled by the MC-DCI; a maximum number of cells not supporting the SUL feature among the plurality of cells that can be scheduled by the MC-DCI.

8. The method of claim 6, wherein, Different first conditions are associated with different first cell groups.

9. The method according to any one of claims 6-8, characterized in that, When the first cell group includes a plurality of cells, the first cell is a cell with a maximum or minimum cell index value in the first cell group. 10.A downlink control information (DCI) sending method, comprising: The method is performed by a base station and includes: determining a first resource range corresponding to a serving cell and a multi-cell downlink control information (MC-DCI) corresponding to the first resource range; determining a size of the MC-DCI by performing a DCI alignment operation in each of the first resource ranges; transmitting the MC-DCI to a terminal based on the size.

11. The method of claim 10, wherein, The determination of the first resource range corresponding to the serving cell includes any of: determining the first resource range based on at least one starting resource element identifier and a number of continuous resource elements corresponding to each of the starting resource element identifiers; determine the first resource range based on a resource element identifier set.

12. The method of claim 11, wherein, The resource element identifier set includes at least one of the following: a search space (SS) identifier set; a bandwidth part (BWP) identifier set; a control resource (CORESET) identifier set.

13. The method according to any one of claims 10-12, characterized in that, The first resource range is a time domain resource range and / or a frequency domain resource range.

14. The method according to any one of claims 10-12, characterized by, If any two of the MC-DCIs correspond to different formats, the base station performs DCI alignment operations on the two MC-DCIs in different first resource ranges, respectively. And / or, If any two of the MC-DCIs correspond to different size sizes before performing the DCI alignment operations, the base station performs DCI alignment operations on the two MC-DCIs in different first resource ranges, respectively. 15.A downlink control information (DCI) sending method, comprising: The method is performed by a base station and includes: determining a multi-cell downlink control information (MC-DCI); determining a first condition associated with a first cell group; wherein the first cell group includes at least one cell that the MC-DCI can schedule; when the MC-DCI satisfies the first condition, determining a size size of the MC-DCI based on a DCI alignment operation performed by a first cell in the first cell group; sending the MC-DCI to a terminal based on the size size.

16. The method of claim 15, wherein, The first condition is at least one of the following: the MC-DCI supports a maximum number of simultaneously schedulable cells; the number of cells simultaneously scheduled by the MC-DCI; the MC-DCI supports a maximum number of cells with supplementary uplink (SUL) characteristics among a plurality of cells that the MC-DCI can schedule; the MC-DCI supports a maximum number of cells without SUL characteristics among the plurality of cells that the MC-DCI can schedule.

17. The method of claim 15, wherein, Different first conditions are associated with different first cell groups.

18. The method according to any one of claims 15-17, characterized by, When the number of cells included in the first cell group is multiple, the first cell is the cell with the maximum or minimum cell index value in the first cell group.

19. A downlink control information (DCI) receiving device, characterized in that, The device is applied to a terminal and includes: a first determination module configured to determine a first resource range corresponding to a serving cell; a second determination module configured to determine a size size of a multi-cell downlink control information (MC-DCI) based on a DCI alignment operation performed in each first resource range; a first receiving module configured to receive and parse the MC-DCI based on the size size.

20. A downlink control information (DCI) receiving apparatus, comprising: The device is applied to a terminal and includes: a third determination module configured to determine a first condition associated with a first cell group; wherein the first cell group includes at least one cell that a multi-cell downlink control information (MC-DCI) can schedule; a fourth determination module configured to, when the MC-DCI satisfies the first condition, determine a size size of the MC-DCI based on a DCI alignment operation of a first cell in the first cell group; a second receiving module configured to receive and parse the MC-DCI at a second cell.

21. A downlink control information (DCI) sending apparatus, characterized in that, The device is applied to a base station and includes: A sixth determining module, configured to determine a first resource range corresponding to a serving cell and a multi-cell downlink control information (MC-DCI) corresponding to the first resource range; A first aligning module, configured to perform a DCI alignment operation in each of the first resource ranges to determine a size of the MC-DCI; A first sending module, configured to send the MC-DCI to a terminal based on the size.

22. A downlink control information (DCI) sending apparatus, characterized in that, The apparatus is applied to a base station, and includes: A seventh determining module, configured to determine a multi-cell downlink control information (MC-DCI); An eighth determining module, configured to determine a first condition associated with a first cell group; wherein the first cell group includes at least one cell that can be scheduled by the MC-DCI; A second aligning module, configured to determine a size of the MC-DCI based on a DCI alignment operation performed by a first cell in the first cell group when the MC-DCI satisfies the first condition; A second sending module, configured to send the MC-DCI to a terminal based on the size.

23. A computer-readable storage medium, characterized in that, The storage medium stores a computer program, and the computer program is used to execute the downlink control information (DCI) receiving method in any one of claims 1-9.

24. A computer-readable storage medium, characterized in that, The storage medium stores a computer program, and the computer program is used to execute the downlink control information (DCI) sending method in any one of claims 10-18.

25. A downlink control information (DCI) receiving apparatus, comprising: comprise: a processor; a memory for storing processor-executable instructions; wherein the processor is configured to execute the downlink control information (DCI) receiving method in any one of claims 1-9.

26. A downlink control information (DCI) sending apparatus, comprising: comprise: a processor; a memory for storing processor-executable instructions; wherein the processor is configured to execute the downlink control information (DCI) sending method in any one of claims 10-18.

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