Cell determination, downlink control information transmission method and apparatus

Abstract

The present disclosure relates to a cell determination method, a downlink control information sending method and apparatus, wherein the cell determination method comprises: receiving a downlink control information (MC-DCI) for scheduling multiple cells; determining related information of the MC-DCI; and determining at least one cell corresponding to the related information of the MC-DCI as a cell scheduled by the MC-DCI according to an association relationship between the related information and the at least one cell. According to the present disclosure, after receiving the MC-DCI from a network device, a terminal can determine related information of the MC-DCI, and then determine a cell corresponding to the related information of the MC-DCI as a cell scheduled by the MC-DCI according to a pre-stored association relationship between the related information and at least one cell. Accordingly, in the case that the MC-DCI schedules multiple cells, the terminal can determine the multiple cells scheduled by the MC-DCI without adjusting the CIF in the DCI.

Description

Technical Field

[0001] This disclosure relates to the field of communication technology, and more specifically, to cell determination methods, downlink control information transmission methods, cell determination devices, downlink control information transmission devices, communication devices, and computer-readable storage media. Background Technology

[0002] In related technologies, a single Downlink Control Information (DCI) is used to schedule data for only one cell, such as scheduling the Physical Uplink Shared Channel (PUSCH) and Physical Downlink Shared Channel (PDSCH) of a cell.

[0003] With the fragmentation of frequency resources, the demand for simultaneously scheduling data from multiple cells is gradually increasing. To reduce control message overhead, a method has been proposed to schedule data from multiple cells using a single DCI. For example, a DCI used to schedule data from multiple cells can be called MC-DCI, where MC stands for multi-cell or multi-carrier. However, the introduction of MC-DCI has also brought about some technical challenges. Summary of the Invention

[0004] In view of the above, embodiments of this disclosure provide a cell determination method, a downlink control information transmission method, a cell determination apparatus, a downlink control information transmission apparatus, a communication apparatus, and a computer-readable storage medium to solve the technical problems in the related art.

[0005] According to a first aspect of the present disclosure, a cell determination method is proposed, executed by a terminal, the method comprising: receiving downlink control information (MC-DCI) for scheduling multiple cells; determining relevant information of the MC-DCI; and determining, based on the association between the relevant information and at least one cell, at least one cell corresponding to the relevant information of the MC-DCI as a cell scheduled by the MC-DCI.

[0006] According to a second aspect of the present disclosure, a cell determination method is proposed, executed by a terminal, the method comprising: receiving downlink control information (MC-DCI) for scheduling multiple cells; and determining the cell to be scheduled by the MC-DCI based on indication information sent by a network device.

[0007] According to a third aspect of the present disclosure, a downlink control information transmission method is proposed, executed by a network device, the method comprising: determining a cell for scheduling downlink control information MC-DCI for scheduling multiple cells; setting relevant information of the MC-DCI based on the association between relevant information and at least one cell and the cell scheduled by the MC-DCI; and transmitting the MC-DCI to a terminal.

[0008] According to a fourth aspect of the present disclosure, a downlink control information transmission method is provided, executed by a network device, the method comprising: sending indication information to a terminal, wherein the indication information is used to indicate a cell for scheduling multiple cell downlink control information (MC-DCI) scheduling sent to the terminal; and sending the MC-DCI to the terminal.

[0009] According to a fifth aspect of the present disclosure, a cell determination apparatus is provided, the apparatus comprising: a receiving module configured to receive downlink control information (MC-DCI) for scheduling multiple cells; and a processing module configured to determine relevant information of the MC-DCI; and, based on the association between the relevant information and at least one cell, determine at least one cell corresponding to the relevant information of the MC-DCI as a cell scheduled by the MC-DCI.

[0010] According to a sixth aspect of the present disclosure, a cell determination apparatus is provided, the apparatus comprising: a receiving module configured to receive downlink control information (MC-DCI) for scheduling multiple cells; and a processing module configured to determine the cell scheduled by the MC-DCI based on indication information sent by a network device.

[0011] According to the seventh aspect of the present disclosure, a downlink control information transmission device is proposed. The device includes: a processing module configured to determine the cells to be scheduled by downlink control information MC-DCI for scheduling multiple cells; and to set relevant information of the MC-DCI based on the association between relevant information and at least one cell and the cells scheduled by the MC-DCI; and a transmission module configured to transmit the MC-DCI to a terminal.

[0012] According to an eighth aspect of the present disclosure, a downlink control information transmission apparatus is provided, the apparatus comprising: a transmission module configured to transmit indication information to a terminal, wherein the indication information is used to indicate a cell for scheduling multiple cell downlink control information (MC-DCI) scheduling sent to the terminal; and transmitting the MC-DCI to the terminal.

[0013] According to a ninth aspect of the present disclosure, a communication device is provided, comprising: a processor; a memory for storing a computer program; wherein, when the computer program is executed by the processor, the above-described cell determination method is implemented.

[0014] According to a tenth aspect of the present disclosure, a communication device is provided, comprising: a processor; a memory for storing a computer program; wherein, when the computer program is executed by the processor, the above-described downlink control information transmission method is implemented.

[0015] According to the eleventh aspect of the present disclosure, a computer-readable storage medium is provided for storing a computer program that, when executed by a processor, implements the steps in the cell determination method described above.

[0016] According to a twelfth aspect of the present disclosure, a computer-readable storage medium is provided for storing a computer program that, when executed by a processor, implements the steps in the downlink control information transmission method described above.

[0017] According to embodiments of this disclosure, after receiving MC-DCI from a network device, the terminal can determine the relevant information of MC-DCI, and then determine the cell corresponding to the relevant information of MC-DCI as the cell scheduled by MC-DCI based on the association between the pre-stored relevant information and at least one cell. Therefore, when MC-DCI schedules multiple cells, the terminal can determine the multiple cells scheduled by MC-DCI without adjusting the CIF in the DCI.

[0018] According to embodiments of this disclosure, after receiving the MC-DCI from the network device, the terminal can determine the multiple cells scheduled by the MC-DCI based on the indication information sent by the network device, so as to correctly parse the MC-DCI using an appropriate parsing method. Therefore, when the MC-DCI schedules multiple cells, it is not necessary to adjust the CIF in the DCI, and the terminal can still determine the multiple cells scheduled by the MC-DCI. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic flowchart illustrating a cell determination method according to an embodiment of the present disclosure.

[0021] Figure 2 This is a schematic flowchart illustrating a cell determination method according to an embodiment of the present disclosure.

[0022] Figure 3 This is a schematic diagram illustrating an application scenario of a cell determination method according to an embodiment of the present disclosure.

[0023] Figure 4 This is a schematic flowchart illustrating a downlink control information transmission method according to an embodiment of the present disclosure.

[0024] Figure 5 This is a schematic flowchart illustrating a downlink control information transmission method according to an embodiment of the present disclosure.

[0025] Figure 6 This is a schematic block diagram of a cell determination device according to an embodiment of the present disclosure.

[0026] Figure 7 This is a schematic block diagram of a cell determination device according to an embodiment of the present disclosure.

[0027] Figure 8 This is a schematic block diagram of a downlink control information transmission device according to an embodiment of the present disclosure.

[0028] Figure 9 This is a schematic block diagram of a downlink control information transmission device according to an embodiment of the present disclosure.

[0029] Figure 10 This is a schematic block diagram illustrating an apparatus for transmitting downlink control information according to embodiments of the present disclosure.

[0030] Figure 11 This is a schematic block diagram illustrating an apparatus for cell determination according to embodiments of the present disclosure. Detailed Implementation

[0031] The technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. Based on the embodiments of this disclosure, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this disclosure.

[0032] The terminology used in this disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the present disclosure. The singular forms “a” and “the” as used in this disclosure and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any and all possible combinations of one or more of the associated listed items.

[0033] It should be understood that although the terms first, second, third, etc., may be used to describe various information in embodiments of this disclosure, such information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, first information may also be referred to as second information without departing from the scope of embodiments of this disclosure, and similarly, second information may also be referred to as first information. Depending on the context, the word "if" as used herein may be interpreted as "when," "when," or "in response to a determination."

[0034] For the sake of brevity and ease of understanding, this document uses the terms "greater than" or "less than", "higher than" or "lower than" to describe size relationships. However, it will be understood by those skilled in the art that the term "greater than" also includes the meaning of "greater than or equal to", and "less than" also includes the meaning of "less than or equal to"; the term "higher than" also includes the meaning of "higher than or equal to", and "lower than" also includes the meaning of "lower than or equal to".

[0035] In one embodiment, when a DCI for scheduling multiple cells (e.g., scheduling data from 3, 4, or 8 serving cells) is introduced, the DCI for scheduling multiple cells can be referred to as MC-DCI, where MC stands for multi-cell or multi-carrier. The scheduling cell described in all embodiments of this disclosure refers to the data of the scheduling cell.

[0036] As a newly introduced DCI, MC-DCI can have a different format than the legacy DCI. Legacy DCI includes, but is not limited to, DCIs used for scheduling single cells, such as DCI format 0_0, DCI format 1_0, DCI format 0_1, DCI format 1_1, DCI format 0_2, and DCI format 1_2. MC-DCI, on the other hand, can include DCI format 0_3 and DCI format 1_3.

[0037] MC-DCI can be used to schedule multiple cells, but currently the way to indicate the cells scheduled by DCI is through the Carrier Indication Field (CIF) in DCI. However, the current CIF can only indicate one cell and is not suitable for indicating multiple cells scheduled by MC-DCI.

[0038] Figure 1 This is a schematic flowchart illustrating a cell determination method according to an embodiment of the present disclosure. The cell determination method shown in this embodiment can be executed by a terminal, which includes, but is not limited to, communication devices such as mobile phones, tablets, wearable devices, sensors, and IoT devices. The terminal can communicate with network devices, which include, but are not limited to, network devices in 4G, 5G, and 6G communication systems, such as base stations and core networks.

[0039] like Figure 1 As shown, the cell determination method may include the following steps: In step S101, downlink control information (MC-DCI) for scheduling multiple cells is received; In step S102, the relevant information of the MC-DCI is determined; In step S103, based on the association between the relevant information and at least one cell, at least one cell corresponding to the relevant information of the MC-DCI is determined to be the cell scheduled by the MC-DCI.

[0040] In one embodiment, the terminal can determine whether the DCI sent by the network device is MC-DCI or legacy DCI. If it is determined that the DCI sent by the network device is legacy DCI, the steps in the embodiments of this disclosure do not need to be performed. The steps in the embodiments of this disclosure are performed only if it is determined that the DCI sent by the network device is MC-DCI.

[0041] The terminal can distinguish whether the DCI is MC-DCI or legacy DCI based on the DCI format, or it can distinguish it in other ways, such as based on the resources used to receive the DCI. This disclosure does not limit this.

[0042] According to embodiments of this disclosure, after receiving the MC-DCI from the network device, the terminal can determine the relevant information of the MC-DCI, and then, based on the association between the pre-stored relevant information and at least one cell (e.g., a cell set or cell group), determine the cell (which may be one cell or multiple cells) corresponding to the relevant information of the MC-DCI as the cell scheduled by the MC-DCI. Therefore, when the MC-DCI schedules multiple cells, there is no need to adjust the CIF in the DCI, and the terminal can still determine the multiple cells scheduled by the MC-DCI.

[0043] It should be noted that the association relationship can be an association relationship between MC-DCI and multiple cells. That is, when MC-DCI is used to schedule multiple cells, the terminal determines the cell to be scheduled by MC-DCI based on the association relationship. However, for scheduling flexibility, in some cases when MC-DCI is set to be used to schedule a single cell, the terminal can choose to determine the single cell to be scheduled by MC-DCI based on the CIF in DCI, or determine the cell to be scheduled by MC-DCI according to the steps in this embodiment.

[0044] In one embodiment, the number of cells that MC-DCI can schedule can be configured as needed, for example, 3, 4 or 8 cells can be scheduled. The following example mainly illustrates the case where MC-DCI can schedule 4 cells.

[0045] For example, if MC-DCI can schedule four cells including cell#1, cell#2, cell#3, and cell#4, then the cells scheduled by MC-DCI each time can be a subset of these four cells, and the subset includes at least one of the following: {cell#1, cell#2, cell#3, cell#4}; {cell#1, cell#2, cell#3}; {cell#1, cell#2, cell#4}; {cell#1, cell#3, cell#4}; {cell#2, cell#3, cell#4}; {cell#1, cell#2}; {cell#1, cell#3}; {cell#1, cell#4}; {cell#2, cell#3}; {cell#2, cell#4}; {cell#3, cell#4}; {cell#1}; {cell#2}; {cell#3}; {cell#4}.

[0046] In one embodiment, the relevant information includes at least one of the following: Radio Network Temporary Identifier (RNTI) used to scramble the MC-DCI. Resources used to receive the MC-DCI.

[0047] For example, after receiving MC-DCI, the terminal can determine the RNTI used to scramble MC-DCI. For example, if the association relationship is that the first RNTI corresponds to {cell#1, cell#2, cell#3, cell#4} in the above subset, and the second RNTI corresponds to {cell#1, cell#2, cell#3} in the above subset, then when the RNTI used to scramble MC-DCI is determined to be the first RNTI, it can be determined that the cells scheduled by MC-DCI include cell#1, cell#2, cell#3, and cell#4. When the RNTI used to scramble MC-DCI is determined to be the second RNTI, it can be determined that the cells scheduled by MC-DCI include cell#1, cell#2, and cell#3.

[0048] The first RNTI can be the temporary identifier of the cell wireless network, C-RNTI, and the second RNTI can be other RNTIs, such as a newly set RNTI, which can be called MC-RNTI, where MC stands for multiple cells or multiple carriers.

[0049] For example, after receiving the MC-DCI, the terminal can determine the resources used to receive the MC-DCI. For example, if the association relationship is that the first resource corresponds to {cell#1, cell#2, cell#3, cell#4} in the above subset, and the second resource corresponds to {cell#1, cell#2, cell#3} in the above subset, then when it is determined that the MC-DCI is received using the first resource, it can be determined that the cells scheduled for the MC-DCI include cell#1, cell#2, cell#3, and cell#4. When it is determined that the MC-DCI is received using the second resource, it can be determined that the cells scheduled for the MC-DCI include cell#1, cell#2, and cell#3.

[0050] In one embodiment, the resource includes at least one of the following: Cell of the community; Bandwidth Part (BWP). Control Resource Set (CORESET); Search Space (SS).

[0051] Taking the resources including cells as an example, the association relationship can be shown in Table 1: Table 1 According to Table 1, when MC-DCI is received on Cell #1, it can be determined that the cells scheduled by MC-DCI include cell #1, cell #2, cell #3, and cell #4; when MC-DCI is received on Cell #2, it can be determined that the cells scheduled by MC-DCI include cell #1, cell #2, and cell #3; when MC-DCI is received on Cell #3, it can be determined that the cells scheduled by MC-DCI include cell #2, cell #3, and cell #4; when MC-DCI is received on Cell #4, it can be determined that the cells scheduled by MC-DCI include cell #3 and cell #4.

[0052] Taking BWP as an example, the association can be shown in Table 2: Table 2 According to Table 2, when MC-DCI is received on BWP#1, the cells scheduled by MC-DCI can be determined to include cell#1, cell#2, cell#3, and cell#4; when MC-DCI is received on BWP#2, the cells scheduled by MC-DCI can be determined to include cell#1, cell#2, and cell#3; when MC-DCI is received on BWP#3, the cells scheduled by MC-DCI can be determined to include cell#2, cell#3, and cell#4; and when MC-DCI is received on BWP#4, the cells scheduled by MC-DCI can be determined to include cell#3 and cell#4.

[0053] In one embodiment, the method further includes: determining the association relationship according to a protocol agreement; and / or determining the association relationship according to indication information sent by the network device.

[0054] The association can be agreed upon by a protocol; it can also be determined by the network device and indicated to the terminal through instruction information; or it can be a candidate set of associations agreed upon by a protocol, in which the network device indicates an association to the terminal through instruction information.

[0055] Figure 2This is a schematic flowchart illustrating a cell determination method according to an embodiment of the present disclosure. The cell determination method shown in this embodiment can be executed by a terminal, which includes, but is not limited to, communication devices such as mobile phones, tablets, wearable devices, sensors, and IoT devices. The terminal can communicate with network devices, which include, but are not limited to, network devices in 4G, 5G, and 6G communication systems, such as base stations and core networks.

[0056] like Figure 2 As shown, the cell determination method may include the following steps: In step S201, downlink control information (MC-DCI) for scheduling multiple cells is received; In step S202, the cell to be scheduled by the MC-DCI is determined based on the indication information sent by the network device.

[0057] In one embodiment, the terminal can determine whether the DCI sent by the network device is MC-DCI or legacy DCI. If it is determined that the DCI sent by the network device is legacy DCI, the steps in the embodiments of this disclosure do not need to be performed. The steps in the embodiments of this disclosure are performed only if it is determined that the DCI sent by the network device is MC-DCI.

[0058] The terminal can distinguish whether the DCI is MC-DCI or legacy DCI based on the DCI format, or it can distinguish it in other ways, such as based on the resources used to receive the DCI. This disclosure does not limit this.

[0059] According to embodiments of this disclosure, after receiving the MC-DCI from the network device, the terminal can determine the multiple cells scheduled by the MC-DCI based on the indication information sent by the network device (which may be received before or after receiving the MC-DCI, or may be included in the MC-DCI), so as to correctly parse the MC-DCI using an appropriate parsing method. Therefore, when the MC-DCI schedules multiple cells, there is no need to adjust the CIF in the DCI, and the terminal can still determine the multiple cells scheduled by the MC-DCI.

[0060] It should be noted that if the terminal has pre-stored the association relationships in the previous embodiments, it can also receive indication information sent by the network device. In this case, the terminal can prioritize determining whether the DCI is used to schedule a single cell or to schedule multiple cells based on the indication information.

[0061] In one embodiment, the indication information includes being carried in at least one of the following: Media Access Control Element (MAC CE); Radio Resource Control (RRC) message.

[0062] The network device can send the indication information before sending the MC-DCI to the terminal, so the terminal can receive the indication information before receiving the MC-DCI, for example, receiving the RRC message and / or MAC CE before receiving the MC-DCI, and then determine the multiple cells scheduled by the subsequently received MC-DCI based on the indication information in the RRC message and / or MAC CE.

[0063] In one embodiment, the method further includes: in the event that a MAC CE carrying the indication information is not correctly received, determining at least one preset cell as a cell scheduled by the MC-DCI, or determining a cell in a preset order cell combination from a preset cell combination list as a cell scheduled by the MC-DCI.

[0064] Because the terminal may not correctly receive the MAC CE carrying the indication information when receiving the MAC CE (e.g., it may not receive the MAC CE carrying the indication information, or it may receive the MAC CE carrying the indication information but fail to decode it correctly), in this case, it cannot determine which cells the MC-DCI will schedule based on the indication information carried in the MAC CE. To address this, the terminal can determine one or more preset cells as cells scheduled by the MC-DCI, or the terminal can pre-store a list, which can be called a preset cell combination list, containing one or more cell combinations. The terminal can then determine the cells in the preset order (e.g., the first or last) of the cell combinations in the list as cells scheduled by the MC-DCI.

[0065] In one embodiment, the method further includes: determining the preset at least one cell and / or the preset cell combination list according to a protocol agreement; and / or determining the preset at least one cell and / or the preset cell combination list according to network device instructions.

[0066] In order to correctly receive MAC CE, the terminal determines at least one preset cell and / or preset cell combination list on which the MC-DCI scheduling cell is based. This can be agreed upon by the protocol or indicated by the network device. For example, the network device indicates the at least one preset cell and / or the preset cell combination list to the terminal through other indication information. Figure 3 This is a schematic diagram illustrating an application scenario of a cell determination method according to an embodiment of the present disclosure.

[0067] like Figure 3 As shown, when a network device uses a MAC CE to carry the indication information to indicate multiple cells scheduled by the MC-DCI to a terminal, the terminal can, for example, receive the MAC CE carrying the indication information in slot #0. However, the indication information in the MAC CE may not take effect immediately; that is, it may not be used to indicate the multiple cells scheduled by the MC-DCI in slot #0. Instead, after confirming that the MAC CE has been correctly received, it waits for a preset time (for example, it can be determined based on the terminal's processing capacity, such as the time it takes for the terminal to parse the MAC CE) before using it to indicate the multiple cells scheduled by the MC-DCI.

[0068] For example, if the terminal confirms that it has correctly received the MAC CE in slot #3, it sends an acknowledgment (ACK) to the network device to confirm that the MAC CE has been correctly received. Then it waits for a preset time, such as 3 milliseconds. Each slot corresponds to 1 millisecond. So, starting from slot #6, the terminal can determine the multiple cells scheduled by the received MC-DCI based on the indication information carried by the MAC CE received in slot #0.

[0069] For example, if the MC-DCI scheduling cell indicated by the MAC CE indication is cell combination #2, then starting from slot #6, the terminal can determine that the received MC-DCI scheduling cell is a cell in cell combination #2. For MC-DCIs received in slots before slot #6, the terminal can use the previously received indication to determine the MC-DCI scheduling cell. For example, if the previously received indication indicated that the MC-DCI scheduling cell was cell combination #1, then for MC-DCIs received in slots #0 to #5, the terminal can determine that the MC-DCI scheduling cell is a cell in cell combination #1.

[0070] Figure 4 This is a schematic flowchart illustrating a downlink control information transmission method according to an embodiment of the present disclosure. The downlink control information transmission method shown in this embodiment can be executed by a network device that can communicate with a terminal. The network device includes, but is not limited to, base stations in communication systems such as 4G, 5G, and 6G base stations. The terminal includes, but is not limited to, communication devices such as mobile phones, tablets, wearable devices, sensors, and IoT devices.

[0071] like Figure 4 As shown, the downlink control information transmission method may include the following steps: In step S401, the cell for scheduling downlink control information (MC-DCI) for multiple cells is determined; In step S402, the relevant information of the MC-DCI is set according to the association between the relevant information and at least one cell and the cell scheduled by the MC-DCI; In step S403, the MC-DCI is sent to the terminal.

[0072] In one embodiment, the network device can determine whether the DCI to be sent to the terminal is MC-DCI or legacy DCI. If it is determined that the DCI to be sent to the terminal is legacy DCI, the steps in the embodiments of this disclosure do not need to be performed. The steps in the embodiments of this disclosure are performed only if it is determined that the DCI to be sent to the terminal is MC-DCI.

[0073] Among them, network devices can set different formats for MC-DCI and legacy DCI so that terminals can distinguish them. Of course, terminals can also distinguish them in other ways, such as based on the resources used to receive DCI. This disclosure does not limit this.

[0074] According to embodiments of this disclosure, when the network sends an MC-DCI to a terminal, it can determine the cell scheduled by the MC-DCI. Then, based on the association between relevant information and at least one cell (e.g., a cell set, cell group) and the cell scheduled by the MC-DCI, it sets relevant information about the MC-DCI (e.g., relevant information corresponding to the cell scheduled by the MC-DCI in the association relationship). This allows the terminal to determine that the cell corresponding to the relevant information of the MC-DCI is the cell scheduled by the MC-DCI based on the association relationship. Therefore, when multiple cells are scheduled by the MC-DCI, the terminal can determine the multiple cells scheduled by the MC-DCI without adjusting the CIF in the DCI.

[0075] In one embodiment, the relevant information includes at least one of the following: The temporary radio network identifier RNTI used to scramble the MC-DCI; Resources used to receive the MC-DCI.

[0076] When network devices use MC-DCI to schedule different cells, they can scramble the MC-DCI using different RNTIs. For example, if the association is that the first RNTI corresponds to {cell#1, cell#2, cell#3, cell#4} and the second RNTI corresponds to {cell#1, cell#2, cell#3}, then when it is determined that the MC-DCI to be sent to the terminal is used to schedule cells#1, cell#2, cell#3, and cell#4, the first RNTI can be used to scramble the MC-DCI. Therefore, after receiving the MC-DCI, the terminal can determine that the MC-DCI is used to schedule cells#1, cell#2, cell#3, and cell#4 based on the RNTI of the scrambled MC-DCI as the first RNTI. Similarly, when it is determined that the MC-DCI to be sent to the terminal is used to schedule cells#1, cell#2, and cell#3, the second RNTI can be used to scramble the MC-DCI. Therefore, after receiving the MC-DCI, the terminal can determine that the MC-DCI is used to schedule cells#1, cell#2, and cell#3 based on the RNTI of the scrambled MC-DCI as the second RNTI.

[0077] The first RNTI can be the temporary identifier of the cell wireless network, C-RNTI, and the second RNTI can be other RNTIs, such as a newly set RNTI, which can be called MC-RNTI, where MC stands for multiple cells or multiple carriers.

[0078] When network devices use MC-DCI to schedule different cells, they can send MC-DCI using different resources. For example, if the association is that the first resource corresponds to {cell#1, cell#2, cell#3, cell#4} and the second resource corresponds to {cell#1, cell#2, cell#3}, then when it is determined that the MC-DCI to be sent to the terminal is used to schedule cell#1, cell#2, cell#3, and cell#4, the first resource can be used to send the MC-DCI. After receiving the MC-DCI, the terminal can determine the MC-DCI to schedule cell#1, cell#2, cell#3, and cell#4 based on the resources of the received MC-DCI as the first resource. Conversely, when it is determined that the MC-DCI to be sent to the terminal is used to schedule cell#1, cell#2, and cell#3, the second resource can be used to send the MC-DCI. After receiving the MC-DCI, the terminal can determine the MC-DCI to schedule cell#1, cell#2, and cell#3 based on the resources of the received MC-DCI as the second resource.

[0079] In one embodiment, the resource includes at least one of the following: Cell of the community; Partial bandwidth BWP; Control resource set CORESET; Search Space SS.

[0080] In one embodiment, the method further includes: determining the association relationship according to a protocol agreement; and / or sending indication information to the terminal, wherein the indication information is used to indicate the association relationship.

[0081] The association can be agreed upon by a protocol; it can also be determined by the network device and indicated to the terminal through instruction information; or it can be a candidate set of associations agreed upon by a protocol, in which the network device indicates an association to the terminal through instruction information.

[0082] Figure 5 This is a schematic flowchart illustrating a downlink control information transmission method according to an embodiment of the present disclosure. The downlink control information transmission method shown in this embodiment can be executed by a network device that can communicate with a terminal. The network device includes, but is not limited to, base stations in communication systems such as 4G, 5G, and 6G base stations. The terminal includes, but is not limited to, communication devices such as mobile phones, tablets, wearable devices, sensors, and IoT devices.

[0083] like Figure 5 As shown, the downlink control information transmission method may include the following steps: In step S501, indication information is sent to the terminal, wherein the indication information is used to indicate the cell sent to the terminal for scheduling multiple cell downlink control information MC-DCI scheduling; In step S502, the MC-DCI is sent to the terminal.

[0084] In one embodiment, the network device can determine whether the DCI to be sent to the terminal is MC-DCI or legacy DCI. If it is determined that the DCI to be sent to the terminal is legacy DCI, the steps in the embodiments of this disclosure do not need to be performed. The steps in the embodiments of this disclosure are performed only if it is determined that the DCI to be sent to the terminal is MC-DCI.

[0085] Among them, network devices can set different formats for MC-DCI and legacy DCI so that terminals can distinguish them. Of course, terminals can also distinguish them in other ways, such as based on the resources used to receive DCI. This disclosure does not limit this.

[0086] According to embodiments of this disclosure, a network device can send indication information (which can be sent before sending the MC-DCI or carried within the MC-DCI) to a terminal to indicate the cells scheduled by the MC-DCI sent to the terminal. After receiving the MC-DCI from the network device, the terminal can determine which cells the MC-DCI schedules based on the indication information. Therefore, when the MC-DCI schedules multiple cells, the terminal can determine the multiple cells scheduled by the MC-DCI without adjusting the CIF in the DCI.

[0087] It should be noted that if the terminal has pre-stored the association relationships in the previous embodiments, the network can also send indication information to the terminal. In this case, the terminal can prioritize determining the cell scheduled by the DCI based on the indication information.

[0088] In one embodiment, the indication information includes being carried in at least one of the following: Media Access Control (MAC) CE; Radio Resource Control (RRC) message.

[0089] The network device can send the indication information before sending the MC-DCI to the terminal, so the terminal can receive the indication information before receiving the MC-DCI. For example, it can receive the RRC message and / or MAC CE before receiving the MC-DCI. Then, it can determine whether the subsequently received MC-DCI is used to schedule multiple cells or to schedule a single cell based on the indication information carried by the RRC message and / or MAC CE.

[0090] In one embodiment, the method further includes: indicating to the terminal at least one preset cell and / or a preset cell combination list, wherein, if the terminal does not correctly receive a MAC CE carrying the indication information, it determines that the preset at least one cell is a cell scheduled by the MC-DCI, or determines that a cell in a preset order cell combination in the preset cell combination list is a cell scheduled by the MC-DCI.

[0091] Since the terminal may not correctly receive the MAC CE carrying the indication information when receiving the MAC CE (for example, it may not receive the MAC CE carrying the indication information, or it may receive the MAC CE carrying the indication information but fail to decode it correctly), in this case, it is not possible to determine which cells the MC-DCI will schedule based on the indication information carried in the MAC CE.

[0092] In this situation, the network device can indicate at least one preset cell and / or a preset cell combination list to the terminal. The terminal can determine one or more preset cells as cells scheduled by MC-DCI based on the network indication, or the terminal can determine a preset cell combination list containing one or more cell combinations based on the network indication. The terminal can determine cells in a preset order (e.g., the first or last) cell combination in the list as cells scheduled by MC-DCI.

[0093] Corresponding to the aforementioned embodiments of the cell determination method and downlink control information transmission method, this disclosure also provides embodiments of the determination device and the downlink control information transmission device.

[0094] Figure 6 This is a schematic block diagram illustrating a cell determination device according to an embodiment of the present disclosure. The cell determination device shown in this embodiment can be a terminal, or a device composed of modules within a terminal. The terminal includes, but is not limited to, communication devices such as mobile phones, tablets, wearable devices, sensors, and IoT devices. The terminal can communicate with network devices, including, but not limited to, network devices in 4G, 5G, and 6G communication systems, such as base stations and core networks.

[0095] like Figure 6 As shown, the cell determination device includes: The receiving module 601 is configured to receive downlink control information (MC-DCI) for scheduling multiple cells; The processing module 602 is configured to determine the relevant information of the MC-DCI; and, based on the association between the relevant information and at least one cell, determine at least one cell corresponding to the relevant information of the MC-DCI as the cell scheduled by the MC-DCI.

[0096] In one embodiment, the relevant information includes at least one of the following: an RNTI for scrambling the MC-DCI; and resources for receiving the MC-DCI.

[0097] In one embodiment, the resources include at least one of the following: Cell; Partial Bandwidth (BWP); Control Resource Set (CORESET); Search Space (SS).

[0098] In one embodiment, the processing module is further configured to determine the association relationship according to a protocol agreement; and / or to determine the association relationship according to indication information sent by the network device.

[0099] Figure 7This is a schematic block diagram illustrating a cell determination device according to an embodiment of the present disclosure. The cell determination device shown in this embodiment can be a terminal, or a device composed of modules within a terminal. The terminal includes, but is not limited to, communication devices such as mobile phones, tablets, wearable devices, sensors, and IoT devices. The terminal can communicate with network devices, including, but not limited to, network devices in 4G, 5G, and 6G communication systems, such as base stations and core networks.

[0100] like Figure 7 As shown, the cell determination device includes: The receiving module 701 is configured to receive downlink control information (MC-DCI) for scheduling multiple cells; The processing module 702 is configured to determine the cell to be scheduled by the MC-DCI based on the indication information sent by the network device.

[0101] In one embodiment, the indication information includes at least one of the following: a Media Access Control (MAC) CE; or a Radio Resource Control (RRC) message.

[0102] In one embodiment, the processing module is further configured to, in the event that a MAC CE carrying the indication information is not correctly received, determine at least one preset cell as a cell scheduled by the MC-DCI, or determine a cell in a preset order cell combination from a preset cell combination list as a cell scheduled by the MC-DCI.

[0103] In one embodiment, the processing module is further configured to determine the preset at least one cell and / or the preset cell combination list according to a protocol agreement; and / or, to determine the preset at least one cell and / or the preset cell combination list according to network device instructions.

[0104] Figure 8 This is a schematic block diagram illustrating a downlink control information transmission device according to an embodiment of the present disclosure. The downlink control information transmission device shown in this embodiment can be a network device, or a device composed of modules within a network device. The network device can communicate with a terminal, including but not limited to mobile phones, tablets, wearable devices, sensors, IoT devices, and other communication devices. The network device includes, but is not limited to, network devices in 4G, 5G, and 6G communication systems, such as base stations and core networks.

[0105] like Figure 8 As shown, the downlink control information transmitting device includes: The processing module 801 is configured to determine the cells to be scheduled using downlink control information MC-DCI for scheduling multiple cells; and to set the relevant information of the MC-DCI based on the association between the relevant information and at least one cell and the cells to be scheduled using the MC-DCI. The sending module 802 is configured to send the MC-DCI to the terminal.

[0106] In one embodiment, the relevant information includes at least one of the following: a Radio Network Temporary Identifier (RNTI) for scrambling the MC-DCI; and resources for receiving the MC-DCI.

[0107] In one embodiment, the resources include at least one of the following: Cell; Partial Bandwidth (BWP); Control Resource Set (CORESET); Search Space (SS).

[0108] In one embodiment, the processing module is further configured to determine the association relationship according to a protocol agreement; and / or, the sending module is further configured to send indication information to the terminal, wherein the indication information is used to indicate the association relationship.

[0109] Figure 9 This is a schematic block diagram illustrating a downlink control information transmission device according to an embodiment of the present disclosure. The downlink control information transmission device shown in this embodiment can be a network device, or a device composed of modules within a network device. The network device can communicate with a terminal, including but not limited to mobile phones, tablets, wearable devices, sensors, IoT devices, and other communication devices. The network device includes, but is not limited to, network devices in 4G, 5G, and 6G communication systems, such as base stations and core networks.

[0110] like Figure 9 As shown, the downlink control information transmitting device includes: The sending module 901 is configured to send indication information to the terminal, wherein the indication information is used to indicate the cell for scheduling multiple cell downlink control information (MC-DCI) scheduling sent to the terminal; and to send the MC-DCI to the terminal.

[0111] In one embodiment, the indication information includes at least one of the following: a Media Access Control (MAC) CE; or a Radio Resource Control (RRC) message.

[0112] In one embodiment, the transmitting module is further configured to indicate to the terminal at least one preset cell and / or a preset cell combination list, wherein, if the terminal does not correctly receive a MAC CE carrying the indication information, it determines that the at least one preset cell is a cell scheduled by the MC-DCI, or determines that a cell in a preset order cell combination in the preset cell combination list is a cell scheduled by the MC-DCI.

[0113] Regarding the apparatus in the above embodiments, the specific manner in which each module performs its operations has been described in detail in the embodiments of the relevant methods, and will not be elaborated upon here.

[0114] For the device embodiments, since they basically correspond to the method embodiments, the relevant parts can be referred to in the description of the method embodiments. The device embodiments described above are merely illustrative. The modules described as separate components may or may not be physically separate, and the components shown as modules may or may not be physical modules, that is, they may be located in one place or distributed across multiple network modules. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without creative effort.

[0115] Embodiments of this disclosure also provide a communication device, including: a processor; a memory for storing a computer program; wherein, when the computer program is executed by the processor, it implements the cell determination method described in any of the above embodiments.

[0116] Embodiments of this disclosure also provide a communication device, including: a processor; a memory for storing a computer program; wherein, when the computer program is executed by the processor, it implements the downlink control information transmission method described in any of the above embodiments.

[0117] Embodiments of this disclosure also provide a computer-readable storage medium for storing a computer program that, when executed by a processor, implements the steps of the cell determination method described in any of the above embodiments.

[0118] Embodiments of this disclosure also provide a computer-readable storage medium for storing a computer program that, when executed by a processor, implements the steps of the downlink control information transmission method described in any of the above embodiments.

[0119] like Figure 10 As shown, Figure 10 This is a schematic block diagram illustrating an apparatus 1000 for transmitting downlink control information according to embodiments of the present disclosure. The apparatus 1000 can be provided as a base station. (Refer to...) Figure 10The device 1000 includes a processing component 1022, a wireless transmitting / receiving component 1024, an antenna component 1026, and a signal processing section specific to the wireless interface. The processing component 1022 may further include one or more processors. One of the processors in the processing component 1022 may be configured to implement the downlink control information transmission method described in any of the above embodiments.

[0120] Figure 11 This is a schematic block diagram illustrating a cell determination device 1100 according to embodiments of the present disclosure. For example, device 1100 may be a mobile phone, computer, digital broadcast terminal, messaging device, game console, tablet device, medical device, fitness equipment, personal digital assistant, etc.

[0121] Reference Figure 11 The device 1100 may include one or more of the following components: processing component 1102, memory 1104, power supply component 1106, multimedia component 1108, audio component 1110, input / output (I / O) interface 1112, sensor component 1114, and communication component 1116.

[0122] Processing component 1102 typically controls the overall operation of device 1100, such as operations associated with display, telephone calls, data communication, camera operation, and recording. Processing component 1102 may include one or more processors 1120 to execute instructions to complete all or part of the steps of the cell determination method described above. Furthermore, processing component 1102 may include one or more modules to facilitate interaction between processing component 1102 and other components. For example, processing component 1102 may include a multimedia module to facilitate interaction between multimedia component 1108 and processing component 1102.

[0123] Memory 1104 is configured to store various types of data to support the operation of device 1100. Examples of such data include instructions for any application or method operating on device 1100, contact data, phonebook data, messages, pictures, videos, etc. Memory 1104 can be implemented by any type of volatile or non-volatile storage device 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.

[0124] Power supply component 1106 provides power to various components of device 1100. Power supply component 1106 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power to device 1100.

[0125] Multimedia component 1108 includes a screen that provides an output interface between the device 1100 and the user. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touchscreen to receive input signals from the user. The touch panel includes one or more touch sensors to sense touches, swipes, and gestures on the touch panel. The touch sensors may sense not only the boundaries of the touch or swipe action but also the duration and pressure associated with the touch or swipe operation. In some embodiments, multimedia component 1108 includes a front-facing camera and / or a rear-facing camera. When the device 1100 is in an operating mode, such as a shooting mode or a video mode, the front-facing camera and / or the rear-facing camera may receive external multimedia data. Each front-facing camera and rear-facing camera may be a fixed optical lens system or have focal length and optical zoom capabilities.

[0126] Audio component 1110 is configured to output and / or input audio signals. For example, audio component 1110 includes a microphone (MIC) configured to receive external audio signals when device 1100 is in an operating mode, such as call mode, recording mode, and voice recognition mode. The received audio signals may be further stored in memory 1104 or transmitted via communication component 1116. In some embodiments, audio component 1110 also includes a speaker for outputting audio signals.

[0127] I / O interface 1112 provides an interface between processing component 1102 and peripheral interface modules, which may be keyboards, click wheels, buttons, etc. These buttons may include, but are not limited to, home buttons, volume buttons, start buttons, and lock buttons.

[0128] Sensor assembly 1114 includes one or more sensors for providing status assessments of various aspects of device 1100. For example, sensor assembly 1114 may detect the on / off state of device 1100, the relative positioning of components such as the display and keypad of device 1100, changes in the position of device 1100 or a component of device 1100, the presence or absence of user contact with device 1100, the orientation or acceleration / deceleration of device 1100, and temperature changes of device 1100. Sensor assembly 1114 may include a proximity sensor configured to detect the presence of nearby objects without any physical contact. Sensor assembly 1114 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, sensor assembly 1114 may also include an accelerometer, a gyroscope, a magnetometer, a pressure sensor, or a temperature sensor.

[0129] Communication component 1116 is configured to facilitate wired or wireless communication between device 1100 and other devices. Device 1100 can access wireless networks based on communication standards, such as WiFi, 2G, 3G, 4G LTE, 5G NR, or combinations thereof. In one exemplary embodiment, communication component 1116 receives broadcast signals or broadcast-related information from an external broadcast management system via a broadcast channel. In one exemplary embodiment, communication component 1116 also includes a near-field communication (NFC) module to facilitate short-range communication. For example, the NFC module may be implemented based on radio frequency identification (RFID) technology, Infrared Data Association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.

[0130] In an exemplary embodiment, the apparatus 1100 may 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, microcontrollers, microprocessors, or other electronic components to perform the cell determination method described above.

[0131] In an exemplary embodiment, a non-transitory computer-readable storage medium including instructions is also provided, such as a memory 1104 including instructions, which can be executed by the processor 1120 of the device 1100 to complete the cell determination method described above. For example, the non-transitory computer-readable storage medium may be a ROM, random access memory (RAM), CD-ROM, magnetic tape, floppy disk, and optical data storage device, etc.

[0132] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the disclosure herein. This disclosure is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the following claims.

[0133] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

[0134] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. The terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0135] The methods and apparatus provided in the embodiments of this disclosure have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this disclosure. The descriptions of the embodiments above are only for the purpose of helping to understand the methods and core ideas of this disclosure. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this disclosure. Therefore, the content of this specification should not be construed as a limitation of this disclosure.

Claims

1. A method for determining a cell, characterized in that, The method, executed by a terminal, includes: Receive downlink control information (MC-DCI) for scheduling multiple cells; The cell scheduled by the MC-DCI is determined based on the indication information sent by the network device, wherein the indication information is carried in the MAC CE; If the MAC CE is not received correctly, at least one preset cell is determined to be the cell scheduled by the MC-DCI, or a cell in a preset order cell combination is determined to be the cell scheduled by the MC-DCI from a preset cell combination list. After correctly receiving the MAC CE and sending back confirmation information, wait for a preset time period, and determine the MC-DCI scheduled cell to be received after the preset time period expires according to the indication information; wherein, before the preset time period expires, determine the MC-DCI scheduled cell according to the previously received indication information.

2. The method according to claim 1, characterized in that, The MC-DCI includes at least one of the following: DCI format 0_3, DCI format 1_3.

3. The method according to claim 1, characterized in that, The method further includes: Determine the relevant information of the MC-DCI; Based on the correlation between relevant information and at least one cell, at least one cell corresponding to the relevant information of the MC-DCI is determined to be the cell scheduled by the MC-DCI.

4. The method according to claim 3, characterized in that, The relevant information of the MC-DCI includes at least one of the following: The temporary radio network identifier RNTI used to scramble the MC-DCI; Resources used to receive the MC-DCI.

5. The method according to claim 4, characterized in that, The resources include at least one of the following: Cell of the community; Partial bandwidth BWP; Control resource set CORESET; Search Space SS.

6. The method according to any one of claims 3 to 5, characterized in that, The method further includes at least one of the following: The aforementioned relationship shall be determined in accordance with the agreement. The association is determined based on the instruction information sent by the network device.

7. A method for transmitting downlink control information, characterized in that, Performed by a network device, the method includes: Send downlink control information (MC-DCI) to the terminal for scheduling multiple cells; Send indication information to the terminal, wherein the indication information is used to indicate the cell scheduled by the MC-DCI, and the indication information is carried in the MAC CE; If the MAC CE is not correctly received by the terminal, the cell scheduled by the MC-DCI is at least one preset cell, or a cell in a preset cell combination list in a preset order. After the MAC CE is correctly received by the terminal and a confirmation message is sent back, the indication information is used to determine the MC-DCI scheduled cell received by the terminal after the preset time period expires; wherein, before the preset time period expires, the MC-DCI scheduled cell is determined according to the indication information previously received by the terminal.

8. The method according to claim 7, characterized in that, The MC-DCI includes at least one of the following: DCI format 0_3, DCI format 1_3.

9. The method according to claim 7, characterized in that, The method further includes: Determine the relevant information of the MC-DCI; Based on the correlation between relevant information and at least one cell, at least one cell corresponding to the relevant information of the MC-DCI is determined to be the cell scheduled by the MC-DCI.

10. The method according to claim 9, characterized in that, The relevant information of the MC-DCI includes at least one of the following: The temporary radio network identifier RNTI used to scramble the MC-DCI; Resources used to receive the MC-DCI.

11. The method according to claim 10, characterized in that, The resources include at least one of the following: Cell of the community; Partial bandwidth BWP; Control resource set CORESET; Search Space SS.

12. A cell determination device, characterized in that, The device includes: The receiving module is configured to receive downlink control information (MC-DCI) for scheduling multiple cells; The processing module is configured to determine the cell scheduled by the MC-DCI based on the indication information sent by the network device, wherein the indication information is carried in the MAC CE; If the MAC CE is not received correctly, at least one preset cell is determined to be the cell scheduled by the MC-DCI, or a cell in a preset order cell combination is determined to be the cell scheduled by the MC-DCI from a preset cell combination list. After correctly receiving the MAC CE and sending back confirmation information, wait for a preset time period, and determine the MC-DCI scheduled cell to be received after the preset time period expires according to the indication information; wherein, before the preset time period expires, determine the MC-DCI scheduled cell according to the previously received indication information.

13. The apparatus according to claim 12, characterized in that, The MC-DCI includes at least one of the following: DCI format 0_3, DCI format 1_3.

14. The apparatus according to claim 12, characterized in that, The processing module is further configured to: Determine the relevant information of the MC-DCI; Based on the correlation between relevant information and at least one cell, at least one cell corresponding to the relevant information of the MC-DCI is determined to be the cell scheduled by the MC-DCI.

15. The apparatus according to claim 14, characterized in that, The relevant information of the MC-DCI includes at least one of the following: The temporary radio network identifier RNTI used to scramble the MC-DCI; Resources used to receive the MC-DCI.

16. The apparatus according to claim 15, characterized in that, The resources include at least one of the following: Cell of the community; Partial bandwidth BWP; Control resource set CORESET; Search Space SS.

17. The apparatus according to any one of claims 14 to 16, characterized in that, The processing module is further configured to: The aforementioned relationship shall be determined in accordance with the agreement. The association is determined based on the instruction information sent by the network device.

18. A downlink control information transmitting device, characterized in that, The device includes: The transmitting module is configured to send downlink control information (MC-DCI) for scheduling multiple cells to the terminal; Send indication information to the terminal, wherein the indication information is used to indicate the cell scheduled by the MC-DCI, and the indication information is carried in the MAC CE; If the MAC CE is not correctly received by the terminal, the cell scheduled by the MC-DCI is at least one preset cell, or a cell in a preset cell combination list in a preset order. After the MAC CE is correctly received by the terminal and a confirmation message is sent back, the indication information is used to determine the MC-DCI scheduled cell received by the terminal after the preset time period expires; wherein, before the preset time period expires, the MC-DCI scheduled cell is determined according to the indication information previously received by the terminal.

19. The apparatus according to claim 18, characterized in that, The MC-DCI includes at least one of the following: DCI format 0_3, DCI format 1_3.

20. The apparatus according to claim 18, characterized in that, The device further includes a processing module configured to: Determine the relevant information of the MC-DCI; Based on the correlation between relevant information and at least one cell, at least one cell corresponding to the relevant information of the MC-DCI is determined to be the cell scheduled by the MC-DCI.

21. The apparatus according to claim 20, characterized in that, The relevant information of the MC-DCI includes at least one of the following: The temporary radio network identifier RNTI used to scramble the MC-DCI; Resources used to receive the MC-DCI.

22. The apparatus according to claim 21, characterized in that, The resources include at least one of the following: Cell of the community; Partial bandwidth BWP; Control resource set CORESET; Search Space SS.

23. A communication device, characterized in that, include: processor; Memory used to store computer programs; When the computer program is executed by a processor, it implements the cell determination method according to any one of claims 1 to 6.

24. A communication device, characterized in that, include: processor; Memory used to store computer programs; When the computer program is executed by the processor, it implements the downlink control information transmission method according to any one of claims 7 to 11.

25. A computer-readable storage medium for storing a computer program, characterized in that, When the computer program is executed by a processor, it implements the steps of the cell determination method according to any one of claims 1 to 6.

26. A computer-readable storage medium for storing a computer program, characterized in that, When the computer program is executed by the processor, it implements the steps of the downlink control information transmission method according to any one of claims 7 to 11.

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