Downlink control information transmission method, communication node and storage medium

Abstract

The application provides a downlink control information transmission method, a communication node and a storage medium. The downlink control information transmission method comprises the following steps: transmitting downlink control information (DCI) in a set format, wherein the DCI in the set format carries uplink control information related parameters of at least one second communication node, and the DCI in the set format is different from DCI used for scheduling a PDSCH; and communicating with the at least one second communication node based on the DCI in the set format.

Description

Technical Field

[0001] This application relates to the field of wireless communication technology, such as a downlink control information transmission method, a communication node, and a storage medium. Background Technology

[0002] In wireless communication systems, base stations schedule Physical Downlink Shared Channels (PDSCHs) for UEs using Downlink Control Information (DCI). This DCI may contain various parameters related to Uplink Control Information, such as power control parameters for the Physical Uplink Control Channel (PUCCH) that indicates the HARQ-ACK acknowledgment information carrying the PDSCH, parameters indicating the PUCCH resources, and parameters indicating the slot location of the PUCCH. Based on these parameters, the UE can transmit Uplink Control Information (UCI). However, these parameters related to Uplink Control Information are all contained within a single DCI format used for PDSCH scheduling, increasing the overhead of the DCI and affecting the efficiency of PDSCH scheduling. Summary of the Invention

[0003] This application provides a downlink control information transmission method, a communication node, and a storage medium.

[0004] This application provides a downlink control information transmission method, including:

[0005] Send a DCI in a predefined format, wherein the predefined DCI simultaneously carries uplink control information related parameters of at least one second communication node, and the predefined DCI is different from the DCI used for scheduling PDSCH.

[0006] Based on the defined DCI format, it communicates with at least one second communication node.

[0007] This application also provides a downlink control information transmission method, including:

[0008] Receive a DCI in a predefined format, wherein the predefined DCI simultaneously carries uplink control information related parameters of at least one second communication node, and the predefined DCI is different from the DCI used for scheduling PDSCH.

[0009] Based on the defined DCI format, it communicates with the first communication node.

[0010] This application also provides a communication node, including: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the downlink control information transmission method described above.

[0011] This application also provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the aforementioned downlink control information transmission method. Attached Figure Description

[0012] Figure 1 A flowchart illustrating a downlink control information transmission method as provided in one embodiment;

[0013] Figure 2 A flowchart illustrating a downlink control information transmission method as provided in one embodiment;

[0014] Figure 3 This is a schematic diagram of the structure of a downlink control information transmission device provided in one embodiment;

[0015] Figure 4 This is a schematic diagram of the structure of a downlink control information transmission device provided in one embodiment;

[0016] Figure 5 This is a schematic diagram of the hardware structure of a communication node provided in one embodiment. Detailed Implementation

[0017] The present application will now be described in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are merely illustrative of the application and not intended to limit it. It should be noted that, unless otherwise specified, the embodiments and features described herein can be arbitrarily combined with each other. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present application, not the entire structure.

[0018] In this embodiment of the application, when the first communication node (such as a base station) schedules PDSCH for the second communication node (such as a terminal) through DCI, in order to reduce the overhead of the DCI format for scheduling PDSCH, the following UCI-related parameters may not be carried in the DCI for scheduling PDSCH, or some of the following UCI-related parameters may be carried:

[0019] The Transmit Power Control (TPC) command for scheduling the PUCCH is used to indicate the power control parameters of the PUCCH carrying the HARQ-ACK.

[0020] The PUCCH resource indicator is used to indicate the set of PUCCH resources configured for the above PUCCH.

[0021] The PDSCH-to-HARQ feedback timing indicator is used to indicate the location of the scheduling unit where the aforementioned PUCCH is located.

[0022] A one-shot HARQ-ACK request is used to instruct the UE to send a one-time HARQ-ACK codebook.

[0023] The Enhanced Type 3 Codebook Indicator is used to instruct the UE to send an Enhanced Type 3 HARQ-ACK.

[0024] The HARQ process corresponding to the codebook;

[0025] The PDSCH group index is used to indicate which PDSCH group the UE sends HARQ-ACKs to;

[0026] The HARQ-ACK retransmission indicator is used to instruct the UE to retransmit a HARQ-ACK codebook.

[0027] The PUCCH cell indicator is used to indicate in which cell the UE sends the HARQ-ACK.

[0028] Based on this, a method is proposed to address the resource determination and transmission issues of uplink control information, providing the UE with resources for transmitting UCIs. These UCIs can be HARQ-ACKs for DCIs used in scheduling PDSCHs, or other UCIs such as Channel State Information (CSI) and Scheduling Requests (SRs). This method not only helps reduce the overhead of downlink control information transmission but also facilitates the separation of downlink and uplink control information, i.e., separating uplink-related information from multiple DCIs that schedule PDSCHs. Most of the uplink-related information in these multiple DCIs is overridden by the uplink-related control information in the last DCI of that DCI (i.e., only the uplink-related information in the last DCI is valid). Therefore, many uplink-related information contained in these multiple DCIs is invalid overhead. This separated information can be transmitted in a single transmission using the following method, thereby reducing DCI overhead.

[0029] In some embodiments, the terminal can be a device with wireless transceiver capabilities, which can be deployed on land, including indoors or outdoors, handheld, wearable, or vehicle-mounted; it can also be deployed on water (such as on ships); and it can also be deployed in the air (e.g., on airplanes, balloons, and satellites). The terminal can be a mobile phone, tablet computer, computer with wireless transceiver capabilities, virtual reality (VR) terminal, augmented reality (AR) terminal, wireless terminal in industrial control, wireless terminal in self-driving, wireless terminal in remote medical care, wireless terminal in smart grid, wireless terminal in transportation safety, wireless terminal in smart city, wireless terminal in smart home, etc. The embodiments of this application do not limit the application scenarios. The term "terminal" can sometimes also refer to a user, user equipment (UE), access terminal, UE unit, UE station, mobile station, mobile station, remote station, remote terminal, mobile device, UE terminal, wireless communication device, UE agent, or UE device, etc., but the embodiments of this application do not limit this to these terms.

[0030] In some embodiments, the base station may be a base station in Long Term Evolution (LTE), Long Term Evolution Advanced (LTEA), or an evolved Node B (eNB or eNodeB), a base station device in a 5G network, or a base station in a future communication system. The base station may include various macro base stations, micro base stations, femtocell base stations, wireless remote extensions, reconfigurable intelligent surfaces (RISs), routers, wireless Fidelity (WIFI) devices, or various network-side devices such as primary cells and secondary cells.

[0031] Figure 1 The flowchart illustrates a downlink control information transmission method as provided in one embodiment. This method can be applied to a first communication node, which can be a network-side node or a sender of downlink control information.

[0032] like Figure 1 As shown, the method provided in this embodiment includes:

[0033] Step 110: Send a DCI in a predefined format, wherein the predefined DCI simultaneously carries uplink control information related parameters of at least one second communication node, and the predefined DCI is different from the DCI used for scheduling PDSCH.

[0034] Step 120: Communicate with at least one second communication node based on the DCI in the specified format.

[0035] In this embodiment, the defined format can be understood as a common DCI format defined between the first and second communication nodes. The DCI using this defined format can simultaneously carry uplink control information related parameters (i.e., UCI related parameters) of at least one second communication node. This defined format DCI can be received by at least one second communication node. Furthermore, the first communication node can configure corresponding PDCCH time-frequency resources for this defined format DCI.

[0036] In one embodiment, each second communication node can receive UCI-related parameters corresponding to itself from the DCI in the set format.

[0037] Based on this, by carrying at least one UCI-related parameter of the UE in the DCI of the set format, it is no longer necessary to include these UCI-related parameters in the DCI of the PDSCH scheduling, which can reduce the overhead of the DCI of the PDSCH scheduling and improve the efficiency of the PDSCH scheduling.

[0038] In one embodiment, sending a DCI in a predefined format includes: sending the DCI in the predefined format to at least one second communication node based on a predefined Radio Network Temporary Identity (RNTI).

[0039] In one embodiment, the method further includes:

[0040] Step 130: Send a first signaling message, which is used to instruct at least one second communication node to receive corresponding uplink control information related parameters from the DCI of the set format; the first signaling message includes at least one of Radio Resource Control (RRC) signaling and Medium Access Control-Control Element (MAC CE) signaling.

[0041] As an example, a first communication node can configure a second communication node to receive specific parameters from a defined DCI format via RRC and / or MAC CE signaling. These specific parameters can be at least one of the UCI-related parameters carried in the defined DCI format. For example, a base station can configure a UE to receive parameter 1 in the defined DCI format; alternatively, a base station can configure a UE to receive both parameter 1 and parameter 2 in the defined DCI format. That is, different UEs can be configured to receive their own parameters from the defined DCI format, and the parameters received by these different UEs can be different or the same.

[0042] In one embodiment, the method further includes:

[0043] Step 140: Send a second signaling message, the second signaling message being used to indicate to at least one second communication node the start bit position of the uplink control information related parameters of the corresponding second communication node in the DCI of the set format; the second signaling message includes at least one of RRC signaling and MAC CE signaling.

[0044] In one embodiment, the number of bits for the uplink control information related parameters of each second communication node is the same; for example, UE1 and UE2 have the same uplink control information related parameters in the defined DCI format. Special case 1 is that UE1's uplink control information parameter in the defined DCI format is parameter 1, and UE2's uplink control information parameters in the defined DCI format are both parameter 1 and parameter 2, but the number of bits for the uplink control information related parameters of UE1 and UE2 is still set to be the same (or different). Based on this, UE1's bit count in the defined DCI format can be aligned with UE2's bit count by adding padding bits. Special case 2 is that UE1's uplink control information parameter in the defined DCI format is parameter 1, and UE2's uplink control information parameter in the defined DCI format is parameter 1, but UE1's parameter 1 is determined to have 2 bits, and UE2's parameter 1 is determined to have 4 bits, but the number of bits for the uplink control information related parameters of UE1 and UE2 is still set to be the same (or different). Based on this, UE1 can be aligned with the number of bits of UE2 in the DCI of the specified format by adding 2 padding bits.

[0045] Alternatively, the number of bits for the uplink control information related parameters of each second communication node may be different, and the method may further include: step 150: sending a third signaling, wherein the number of bits for the UCI related parameters of each second communication node may be indicated by the third signaling; the third signaling includes at least one of RRC signaling and MAC CE signaling.

[0046] In one embodiment, for any second communication node, when the first communication node is configured to receive the DCI in the specified format,

[0047] The DCI used to schedule PDSCH does not include the aforementioned UCI-related parameters, or...

[0048] The DCI for scheduling PDSCH includes the UCI-related parameters, but the second communication node can ignore the UCI-related parameters in the DCI for scheduling PDSCH and instead use the UCI-related parameters in the DCI with a set format.

[0049] In one embodiment, for any second communication node, if the first communication node is not configured to receive the DCI of the specified format, the DCI of the scheduled PDSCH includes the uplink control information related parameters, and the second communication node uses the uplink control information related parameters in the DCI of the scheduled PDSCH. For example, if the base station is not configured to receive the DCI of the specified format for the UE, the base station includes uplink control information related parameters in the DCI of the scheduled PDSCH, and the UE uses the uplink control information related parameters in the DCI.

[0050] In one embodiment, for any second communication node, before the first communication node configures the second communication node to receive DCI of a predetermined format, the method further includes:

[0051] Step 100: Receive the capability information of the second communication node, and determine whether the second communication node has the capability to receive DCI in a set format based on the capability information.

[0052] In one embodiment, the uplink control information related parameters of each second communication node include at least one of the following:

[0053] The resource indicator (which can be denoted as parameter 1) is used to determine at least one of the time-domain resources and frequency-domain resources in the scheduling unit for uplink control information;

[0054] The power parameter (denoted as parameter 2) is used to determine the power used for transmitting uplink control information;

[0055] The number of interval units (denoted as parameter 3) is used to determine the location of the scheduling unit where uplink control information is transmitted;

[0056] The type of uplink control information transmission (denoted as parameter 4);

[0057] The mechanism for generating uplink control information (denoted as parameter 5);

[0058] Enhanced HARQ-ACK codebook indicator (denoted as parameter 6);

[0059] PDSCH group index (denoted as parameter 7);

[0060] HARQ-ACK retransmission indication (denoted as parameter 8);

[0061] Cell indication of uplink control information (denoted as parameter 9).

[0062] As an example, parameter 1 can be used to determine the time-domain and / or frequency-domain resources of the UCI within the scheduling unit. For instance, parameter 1 can indicate the UCI's PUCCH time-domain and / or PUCCH frequency-domain resources, or it can indicate the index of the UCI's PUCCH time-domain and / or PUCCH frequency-domain resources, based on which the corresponding PUCCH resources can be determined. Similarly, parameter 1 can indicate the UCI's PUSCH time-domain and / or PUSCH frequency-domain resources, or it can indicate the index of the UCI's PUSCH time-domain and / or PUSCH frequency-domain resources, based on which the corresponding PUSCH resources can be determined. Furthermore, parameter 1 can provide an index from which the UCI's time-domain and / or frequency-domain resources can be determined from a predefined table or set. Finally, parameter 1 can be used to directly configure the UCI's time-domain and / or frequency-domain resources.

[0063] As an example, the power of UCI transmission can be determined based on parameter 2.

[0064] As an example, parameter 3 can be used to determine the scheduling unit for UCI transmission. For instance, when parameter 3 is carried in the defined format DCI, it can be used to describe the interval between the scheduling unit of the defined format DCI and the scheduling unit of the UCI. When parameter 3 is carried in the DCI that schedules PDSCH, it can be used to describe the interval between the scheduling unit of that PDSCH and the scheduling unit of the UCI. Alternatively, when parameter 3 is carried in the DCI that does not schedule PDSCH, it can be used to describe the interval between the scheduling unit of that unscheduled PDSCH and the scheduling unit of the UCI.

[0065] As an example, the type of UCI transmission can be determined based on parameter 4; for example, HARQ-ACK, CSI, or Sounding Reference Signal, etc.

[0066] As an example, the mechanism for UCI generation can be determined based on parameter 5. For instance, if the UCI is a HARQ-ACK codebook, the mechanism for UCI generation includes: which mechanism the HARQ-ACK codebook is generated based on. Referencing the HARQ-ACK generation mechanisms in 5G, this includes at least one of the following: type 1 HARQ-ACK codebook, type 2 HARQ-ACK codebook, enhanced type 2 HARQ-ACK codebook, type 3 HARQ-ACK codebook, and enhanced type 3 HARQ-ACK codebook. Similarly, if the UCI is CSI, the mechanism for UCI generation includes at least one of the following: periodic CSI reporting, semi-persistent CSI reporting, aperiodic CSI reporting, CSI reporting for subband full-duplex (SBFD) symbols, and CSI reporting for non-SBFD symbols. For example, if UCI is SRS, then the mechanism by which UCI is generated includes at least one of the following: periodic SRS transmission, semi-persistent SRS transmission, aperiodic SRS transmission, SRS transmission for SBFD symbols, and SRS transmission for non-SBFD symbols.

[0067] As an example, parameter 6 can be used to determine the number and ID of the HARQ processes used to enhance the type3 HARQ-ACK codebook. If the mechanism generated by the UCI is to enhance the type3 HARQ-ACK codebook, then parameter 6 can be included in the formatted DCI.

[0068] As an example, parameter 7 can be used to determine which PDSCHs generate enhanced type 2 HARQ-ACK codebooks. If the mechanism used by the UCI to generate the enhanced type 2 HARQ-ACK codebook is the enhanced type 2 HARQ-ACK codebook, then parameter 7 is included in the formatted DCI.

[0069] As an example, parameter 8 can be used to determine which HARQ-ACK codebook to retransmit. Parameter 8 can be used to determine which HARQ-ACK codebook to retransmit.

[0070] As an example, a cell can be identified based on parameter 9, in which UCI is transmitted. Furthermore, parameters 1, 2, and 3 above can be understood based on the indicated cell. For instance, the time-frequency resources of the UCI in the scheduling unit can be determined based on the time-frequency resources configured for the UCI in the indicated cell; similarly, the power control information used for UCI transmission can be determined based on the power control information configured for the UCI in the indicated cell; and the location of the scheduling unit where the UCI is transmitted can be determined based on the scheduling unit configured for the UCI in the indicated cell.

[0071] The scheduling unit includes at least one of the following: time slot, subframe, or set of Orthogonal Frequency Division Multiplexing (OFDM) symbols.

[0072] In one embodiment, the method further includes:

[0073] Step 160: Send a fourth signaling message, the fourth signaling message being used to instruct at least one second communication node to receive at least one parameter from the DCI of the set format; different second communication nodes may receive the same or different parameters from the DCI of the set format; the fourth signaling message includes at least one of RRC signaling and MAC CE signaling.

[0074] As an example, the first communication node can be configured to receive one or more UCI-related parameters from a set format DCI for the same second communication node. For example, UE1 is configured to receive UCI-related parameter 1 and parameter 2 in a set format DCI.

[0075] As an example, the first communication node can configure different second communication nodes to receive the same one or more parameters from a set format DCI. For example, UE1 is configured to receive UCI-related parameter 1 and parameter 2 in a set format DCI, and UE2 is also configured to receive UCI-related parameter 1 and parameter 2 in a set format DCI.

[0076] As an example, the first communication node can configure different second communication nodes to receive one or more different parameters from a set format DCI. For example, UE1 is configured to receive UCI-related parameter 1 and parameter 2 in a set format DCI, UE2 is configured to receive UCI-related parameter 1 in a set format DCI, and UE2 is configured to receive UCI-related parameter 2 in a set format DCI.

[0077] Based on this, resources for providing corresponding uplink control information can be provided to one or more second communication nodes.

[0078] In one embodiment, the method further includes:

[0079] Step 170: Instruct at least one second communication node to receive at least one parameter from the DCI of the specified format via bitmap signaling; different second communication nodes may receive the same or different parameters from the DCI of the specified format.

[0080] As an example, the base station and the UE can agree on a specific set of parameters. The base station can then use bitmap signaling to indicate to the UE which specific parameters need to be received from the DCI in a defined format. Different UEs can be configured with different specific parameters. The base station and the UE can agree on the number of bits for each specific parameter.

[0081] In one embodiment, in the defined DCI format, the bit information corresponding to the uplink control information related parameters of a second communication node is placed consecutively; when the uplink control information related parameters include at least two parameters, the bit information corresponding to the at least two parameters is placed sequentially.

[0082] As an example, in this DCI configuration format, the bit information corresponding to the specific parameters of the same UE is placed consecutively. If there are multiple specific parameters, the base station and the UE can agree on the placement order of these multiple specific parameters. In this DCI configuration format, the starting bit position of the first specific parameter of each UE can be determined by the base station through RRC and / or MAC CE signaling instructions.

[0083] Based on the above, the second communication node can obtain its own UCI-related parameters from the DCI of the specified format based on the starting bit position of the specific parameter in the DCI of the specified format, the specific parameters configured for the second communication node, the placement order of the specific parameters, and the number of bits of each specific parameter, which improves the scheduling flexibility.

[0084] In one embodiment, the formatted DCI also simultaneously carries at least one of the following parameters for at least one second communication node: parameters for determining the time slot format; parameters for determining the effective resource block set; parameters for determining the search space set group switching; parameters for determining the channel occupancy time duration; parameters for determining resources that do not transmit DL data; parameters for determining the CSIPUCCH power or CSIPUSCH power; parameters for determining the SRS power; parameters for determining resources that do not transmit UL data; parameters for determining the availability of soft resources; parameters for determining power-saving information other than DRXActive Time; parameters for determining the availability indication of paging early indication and tracking parameter signals; parameters for determining the time domain resources of uplink data; parameters for determining the frequency domain resources of uplink data; parameters for determining the aperiodic beam indication and associated time resources; parameters for determining whether to activate or deactivate the cell discontinuous transmission (DTX) configuration of at least one serving cell; parameters for determining whether to activate or deactivate the cell discontinuous reception (DRX) configuration of at least one serving cell; and parameters for determining the network energy saving of the primary cell. The parameters indicated by the Saving (NES) mode.

[0085] It should be noted that UCI-related parameters can be understood as a set of parameter types. The methods described above can also be applied to other parameters. That is to say, the configuration of the DCI format is not limited to the above-mentioned UCI-related parameters, but may also include at least one of the following parameters: parameters for determining the time slot format, parameters for determining the effective resource block set, parameters for determining the search space set group switching, parameters for determining the channel occupancy time, parameters for determining resources that do not transmit DL data, parameters for determining the power of CSIPUCCH or CSIPUSCH transmission, parameters for determining the power of SRS transmission, parameters for determining resources that do not transmit UL data, parameters for determining the validity of soft resources, and parameters for determining DRX Active. Parameters other than Time-related power-saving information include parameters for determining paging early indication and tracking parameter signal availability indication, parameters for determining uplink data (PUSCH) time-domain resources, parameters for determining uplink data (PUSCH) frequency-domain resources, parameters for determining aperiodic beam indication and associated time resources, parameters for determining cell DTX and / or DRX configurations for activating or deactivating one or more serving cells, and parameters for determining the primary cell's NES mode indication. The UE can be configured to receive UCI-related parameters or at least one of the above parameters. Clearly, configuring a separate DCI format for each of these parameters would result in too many DCI formats, increasing UE blind detection and system complexity. Configuring UCI-related parameters and one or more of the above parameters within a predefined DCI format can save on the number of DCI formats.

[0086] In one embodiment, the method further includes:

[0087] Step 180: Configure the location of the PDCCH where the DCI of the set format is located.

[0088] As an example, to reduce the risk of blind detection of a DCI with a specific format by the UE, the location of the DCI in the PDCCH can be predefined, thereby avoiding blind detection by the UE. For example, the DCI with a specific format can be predefined or configured by signaling through the CCE location (including the number of CCEs and the CCE index) in the PDCCH.

[0089] In one embodiment, the total number of bits in the defined format DCI is equal to the total number of bits in the fallback DCI; wherein the fallback DCI includes a DCI with a fixed number of parameters and a fixed number of bits for each parameter, and the number of parameters and the number of bits for each parameter cannot be modified by signaling.

[0090] Figure 2This is a flowchart illustrating a downlink control information transmission method according to one embodiment. This method can be applied to a second communication node, which can be a UE (User Equipment) or a receiver of indication information or data. Technical details not described in detail in this embodiment can be found in any of the above embodiments.

[0091] like Figure 2 As shown, the method provided in this embodiment includes:

[0092] Step 210: Receive a DCI in a predefined format, wherein the predefined DCI simultaneously carries uplink control information related parameters of at least one second communication node, and the predefined DCI is different from the DCI used for scheduling PDSCH.

[0093] Step 220: Communicate with the first communication node based on the DCI in the set format.

[0094] In this embodiment, the defined format can be understood as a common DCI format defined between the first and second communication nodes. This defined format DCI can simultaneously carry uplink control information related parameters (i.e., UCI related parameters) of at least one second communication node. This defined format DCI can be received by at least one second communication node. Specifically, the second communication node can receive the defined format DCI, specifically by receiving its own corresponding UCI related parameters from the defined format DCI.

[0095] In one embodiment, receiving a DCI in a predefined format includes: receiving the DCI in the predefined format based on a predefined RNTI.

[0096] In one embodiment, the method further includes:

[0097] Step 230: Receive first signaling, which is used to notify the second communication node to receive the corresponding uplink control information related parameters from the DCI of the set format; the first signaling includes at least one of RRC signaling and MAC CE signaling.

[0098] In one embodiment, the method further includes:

[0099] Step 240: Receive a second signaling, the second signaling being used to indicate the start bit position of the uplink control information related parameters of the second communication node in the DCI of the set format; the second signaling includes at least one of RRC signaling and MAC CE signaling.

[0100] In one embodiment, the number of bits of the uplink control information related parameters of each second communication node is the same;

[0101] Alternatively, the method may further include step 250: receiving third signaling, wherein the number of bits of the uplink control information related parameters of each second communication node is indicated by the third signaling; the third signaling includes at least one of RRC signaling and MAC CE signaling.

[0102] In one embodiment, when the first communication node is configured to receive the DCI of the set format, the DCI of the scheduled PDSCH does not contain the uplink control information related parameters, or the DCI of the scheduled PDSCH contains the uplink control information related parameters and the second communication node adopts the uplink control information related parameters in the DCI of the set format.

[0103] In one embodiment, when the first communication node is not configured to receive the DCI in the specified format,

[0104] The DCI of the PDSCH scheduling includes the uplink control information related parameters, and the second communication node adopts the uplink control information related parameters in the DCI of the PDSCH scheduling.

[0105] In one embodiment, the method further includes:

[0106] Step 200: Report capability information to the first communication node. Based on the capability information, the second communication node can be determined to have or not have the capability to receive the DCI in the set format.

[0107] In one embodiment, the uplink control information related parameters of each second communication node include at least one of the following:

[0108] Resource indication is used to determine at least one of the time-domain resources and frequency-domain resources in the scheduling unit for uplink control information;

[0109] Power parameters are used to determine the power used to transmit uplink control information;

[0110] The number of interval units is used to determine the location of the scheduling unit where uplink control information is transmitted;

[0111] Type of uplink control information transmission;

[0112] The mechanism for generating uplink control information;

[0113] Enhanced HARQ-ACK codebook indicator;

[0114] PDSCH group index;

[0115] HARQ-ACK retransmission instruction;

[0116] Cell indication of uplink control information.

[0117] In one embodiment, the method further includes:

[0118] Step 260: Receive a fourth signaling message, the fourth signaling message being used to instruct the second communication node to receive at least one parameter from the DCI of the set format;

[0119] Different second communication nodes may receive the same or different parameters from the DCI in the specified format;

[0120] The fourth signaling includes at least one of RRC signaling and MAC CE signaling.

[0121] In one embodiment, the method further includes:

[0122] Step 270: Receive bitmap signaling, the bitmap signaling being used to instruct the second communication node to receive at least one parameter from the DCI of the set format; different second communication nodes may receive the same or different parameters from the DCI of the set format.

[0123] In one embodiment, in the defined DCI format, the bit information corresponding to the uplink control information related parameters of a second communication node is placed consecutively; when the uplink control information related parameters include at least two parameters, the bit information corresponding to the at least two parameters is placed sequentially.

[0124] In one embodiment, the formatted DCI is further used to carry at least one of the following parameters of the second communication node: parameters for determining the time slot format; parameters for determining the effective resource block set; parameters for determining the search space set group switching; parameters for determining the channel occupancy time duration; parameters for determining resources that do not transmit DL data; parameters for determining the CSIPUCCH power or CSIPUSCH power; parameters for determining the SRS power; parameters for determining resources that do not transmit UL data; parameters for determining the availability of soft resources; parameters for determining power-saving information other than DRX ActiveTime; parameters for determining the availability indication of paging early indication and tracking parameter signal; parameters for determining the time domain resources of uplink data; parameters for determining the frequency domain resources of uplink data; parameters for determining the aperiodic beam indication and associated time resources; parameters for determining the cell DTX configuration to activate or deactivate at least one serving cell; parameters for determining the cell DRX configuration to activate or deactivate at least one serving cell; and parameters for determining the NES mode indication of the primary cell.

[0125] In one embodiment, the method further includes:

[0126] Step 280: Determine the location of the DCI in the specified format on the PDCCH.

[0127] In one embodiment, the total number of bits in the defined format DCI is equal to the total number of bits in the fallback DCI; wherein the fallback DCI includes a DCI with a fixed number of parameters and a fixed number of bits for each parameter.

[0128] The downlink control information transmission method of this application is illustrated below through some embodiments. In the following embodiments, the first communication node is a base station, and the second communication node is a UE.

[0129] In one embodiment, a formatted DCI can simultaneously carry the same UCI-related parameters for different UEs.

[0130] The base station and the UE agree, or the base station configures the UE via signaling, that parameter 1 (i.e., the Resource Indicator) is received from a DCI in a predefined format. The UE determines, based on signaling or the agreement, that parameter 1 is received from the predefined DCI.

[0131] The base station and the UE agree on, or the base station configures, the number of bits for parameter 1. The base station configures the position of the starting bit of parameter 1 in the DCI of a defined format for each different UE. The UE determines the number of bits for parameter 1 and the position of the starting bit of parameter 1 in the DCI of the defined format based on signaling or agreement.

[0132] The base station configures a time-frequency resource for the UE to listen to a DCI in a specified format. That is, the base station associates this specified DCI with a time-frequency resource configuration, such as configuring a Control-Resource Set (CORESET) and a search space. Within this time-frequency resource, the base station transmits the specified DCI, and this specified DCI is transmitted based on an agreed-upon RNTI. This RNTI can be a public RNTI, meaning it is known to multiple UEs. Different UEs receive this specified DCI within this time-frequency resource and obtain their respective parameter 1 from it.

[0133] Within a cell, the base station schedules the PDSCH of different UEs via DCI, or sends DCIs of some unscheduled PDSCHs to the UE. Note that some unscheduled PDSCH DCIs include, but are not limited to, at least one of the following: DCIs releasing semi-static scheduling (SPS) configurations, dormant DCIs, and energy-saving DCIs. Assuming that the DCI or the DCIs of some unscheduled PDSCHs contain at least parameter 3 (i.e., the number of interval units), the location of the scheduling unit corresponding to the HARQ-ACK of the DCI or the DCIs of some unscheduled PDSCHs can be known by the UE. In this way, the base station can also schedule the PDSCH of multiple UEs or schedule the HARQ-ACKs corresponding to the DCIs of some unscheduled PDSCHs within different scheduling units via DCI. Wherein, the DCI or the DCIs of some unscheduled PDSCHs do not contain parameter 1. After receiving the DCI or the DCIs of some unscheduled PDSCHs, the UE can determine the location of the scheduling unit where the HARQ-ACK was transmitted.

[0134] The base station transmits a DCI in a predefined format, and within this DCI, it includes parameter 1 for different UEs according to configured bit positions. Each UE receives the DCI in this format, obtains its respective parameter 1, and determines a time-frequency resource for uplink control information within the aforementioned scheduling unit based on the parameter 1. Different UEs transmit their respective uplink control information within the determined time-frequency resource. Alternatively, the base station can determine the time-frequency resource for different UEs to transmit uplink control information based on the parameter 1 in the predefined DCI, and then receive the uplink control information from each UE.

[0135] Specifically, the DCI in the specified format is transmitted before the same scheduling unit, and the PDCCH containing the DCI in the specified format satisfies a predefined timeline. For example, the predefined timeline is: the last symbol of the PDCCH containing the DCI in the specified format is no later than m symbols before the start symbol of the same scheduling unit; or, there is at least a m symbol interval between the last symbol of the PDCCH containing the DCI in the specified format and the start symbol of the same scheduling unit; or, for a UE, there is at least a m1 symbol interval between the last symbol of the PDCCH containing the DCI in the specified format and the start symbol of the uplink control channel resource determined for the UE; wherein the values ​​of m and m1 can be predefined based on the duration of the UE decoding the PDCCH and the duration of preparing uplink control information.

[0136] In one embodiment, a DCI with a defined format can simultaneously carry the same parameter from different UEs.

[0137] The base station and the UE agree, or the base station configures the UE via signaling, that parameter 1 (i.e., the Resource Indicator) is received from the DCI in a predefined format. The UE determines, based on signaling or the agreement, to receive parameter 1 from the DCI in the predefined format.

[0138] The base station and the UE agree on, or the base station configures, the number of bits for parameter 1. The base station configures the position of the starting bit of parameter 1 in the DCI of the specified format for each different UE. The UE determines the number of bits for parameter 1 based on signaling or agreement, and determines the position of the starting bit of parameter 1 in the DCI of the specified format.

[0139] The base station configures a time-frequency resource for the UE to listen to a DCI in a specified format. That is, the base station associates this specified DCI with a time-frequency resource configuration, such as configuring a CORESET and a search space. Within this time-frequency resource, the base station transmits the specified DCI to the UE, and this specified DCI is transmitted based on an agreed-upon RNTI (which can be a public RNTI, known to multiple UEs). The UE receives the specified DCI within this time-frequency resource and obtains parameter 1 from it.

[0140] Within a cell, the base station transmits an SPS PDSCH for at least one UE, assuming that the active DCI corresponding to the SPS PDSCH contains at least parameter 3 (i.e., the number of interval units), but does not configure time-frequency resources for the corresponding uplink control information for the SPS PDSCH. Based on this, the location of the scheduling unit corresponding to the HARQ-ACK of the SPS PDSCH can be known by the UE. In this way, the SPS PDSCHs of multiple UEs transmitted by the base station may all be in the same scheduling unit or in different scheduling units. The active DCI does not contain parameter 1. After receiving the active DCI, the UE can determine the location of the scheduling unit where the HARQ-ACK is transmitted.

[0141] The base station transmits a DCI in a predefined format, and within this DCI, it includes parameter 1 for different UEs according to configured bit positions. Each UE receives the DCI in this format, obtains its own parameter 1, and determines a time-frequency resource for uplink control information within the aforementioned scheduling unit based on the parameter 1. Different UEs transmit their respective uplink control information within the determined time-frequency resource. The base station also determines the time-frequency resource for different UEs to transmit uplink control information based on the parameter 1 in the predefined DCI, and then receives the uplink control information from each UE.

[0142] Specifically, the DCI in the specified format is transmitted before the same scheduling unit, and the PDCCH containing the DCI in the specified format satisfies a predefined timeline. For example, the predefined timeline is: the last symbol of the PDCCH containing the DCI in the specified format is no later than m symbols before the start symbol of the same scheduling unit; or, the last symbol of the PDCCH containing the DCI in the specified format is at least m symbols apart from the start symbol of the same scheduling unit; or, for a UE, the last symbol of the PDCCH containing the DCI in the specified format is at least m1 symbols apart from the start symbol of the uplink control channel resource determined for the UE; wherein the values ​​of m and m1 can be predefined based on the duration of the UE decoding the PDCCH and the duration of preparing uplink control information.

[0143] It is understood that the method described in the above embodiments can also be applied to situations where DCI schedules a mixture of PDSCH and SPS PDSCH.

[0144] In one embodiment, a formatted DCI simultaneously carries multiple identical parameters from different UEs.

[0145] The base station and the UE agree, or the base station configures the UE via signaling, that parameters 1 and 2 mentioned above are received from a DCI in a predefined format. The UE determines, based on signaling or the agreement, to receive parameters 1 and 2 from the predefined DCI.

[0146] The base station and the UE agree, or the base station configures, the number of bits for parameter 1 and the number of bits for parameter 2. The base station and the UE agree, or the base station configures, in a set format DCI, that parameter 1 of a UE can be placed before (or after) parameter 2, and the bit information of parameter 1 and parameter 2 is placed consecutively.

[0147] The base station configures the position of the start bit of the parameter to be received in the DCI of a set format for each different UE. For example, if the bit of parameter 1 comes before the bit of parameter 2, then the position of the start bit here is the position of the first bit of parameter 1. The UE determines the number of bits of parameter 1 and parameter 2 based on signaling or convention, and determines the position of the start bit of parameter 1 and parameter 2 in the set format DCI.

[0148] The base station configures a time-frequency resource for the UE to listen to a DCI in a specified format. That is, the base station associates this specified DCI with a time-frequency resource configuration, such as configuring a CORESET and a search space. Within this time-frequency resource, the base station transmits the specified DCI to the UE, and this specified DCI is transmitted based on an agreed-upon RNTI (which can be a public RNTI, known to multiple UEs). The UE receives the specified DCI within this time-frequency resource and retrieves parameters 1 and 2 from it.

[0149] Within a cell, the base station schedules the PDSCH of different UEs via DCI, or sends DCIs of some unscheduled PDSCHs to the UEs. Note that the UE is required to provide HARQ-ACK for these unscheduled PDSCH DCIs. Assuming the DCI contains at least parameter 3 (i.e., the number of interval units), the UE can determine the location of the scheduling unit corresponding to the PDSCH or the HARQ-ACK of the DCI. In this way, the base station can schedule the PDSCHs or HARQ-ACKs of multiple UEs within the same scheduling unit, or in different scheduling units. The DCI does not contain parameter 1. After receiving the DCI, the UE can determine the location of the scheduling unit from which the HARQ-ACK was transmitted.

[0150] The base station transmits a DCI in a predefined format, containing parameters 1 and 2 for different UEs according to their configured bit positions. Each UE receives the DCI, obtains its own parameters 1 and 2, and determines a time-frequency resource for uplink control information within the aforementioned scheduling unit based on parameter 1. Different UEs transmit their respective uplink control information within the determined time-frequency resource, using the transmission power determined based on parameter 2. The base station also determines the time-frequency resource and transmission power for different UEs to transmit uplink control information based on parameters 1 and 2 in the predefined DCI, and then receives the uplink control information from each UE.

[0151] Specifically, the DCI in the specified format is transmitted before the same scheduling unit, and the PDCCH containing the DCI in the specified format satisfies a predefined timeline. For example, the predefined timeline is: the last symbol of the PDCCH containing the DCI in the specified format is no later than m symbols before the start symbol of the same scheduling unit; or, the last symbol of the PDCCH containing the DCI in the specified format is at least m symbols apart from the start symbol of the same scheduling unit; or, for a UE, the last symbol of the PDCCH containing the DCI in the specified format is at least m1 symbols apart from the start symbol of the uplink control channel resource determined for the UE; wherein the values ​​of m and m1 can be predefined based on the duration of the UE decoding the PDCCH and the duration of preparing uplink control information.

[0152] In the above embodiments, each UE carries the same parameters in the DCI with a set format, which is beneficial for unified management of the parameters of each UE.

[0153] In one embodiment, the base station and UE1 agree, or the base station configures UE1 via signaling, that the aforementioned parameters 1 and 2 are received from a DCI of a predetermined format. UE1 determines, based on the signaling or agreement, to receive the aforementioned parameters 1 and 2 from the DCI of the predetermined format.

[0154] The base station and UE1 agree, or the base station configures, the number of bits for parameter 1 and the number of bits for parameter 2. The base station and UE1 agree, or the base station configures, in a set format DCI, that parameter 1 of UE1 is placed before (or after) parameter 2, and the bit information of parameter 1 and parameter 2 is placed consecutively.

[0155] The base station configures the position of the start bit of the parameter to be received in the DCI of a specified format for UE1. For example, if the bit of parameter 1 comes before the bit of parameter 2, then the position of the start bit here is the position of the first bit of parameter 1. UE1 determines the number of bits for parameter 1 and parameter 2 based on signaling or convention, and determines the position of the start bit for parameter 1 and parameter 2 in the DCI of the specified format.

[0156] The base station and UE2 agree, or the base station configures UE2 via signaling, that parameter 1 mentioned above is received from a DCI in a predefined format. UE2 determines, based on signaling or the agreement, to receive parameter 1 from the predefined DCI.

[0157] The number of bits for parameter 1 is agreed upon by the base station and UE2, or configured by the base station.

[0158] The base station configures UE2 to receive the starting bit of parameter 1 in a defined DCI format. UE2 determines the number of bits for parameter 1 based on signaling or convention, and determines the starting bit position of parameter 1 in the defined DCI format.

[0159] The base station and UE3 agree, or the base station configures UE3 via signaling, that parameter 2 mentioned above is received from the DCI in a predefined format. UE3 determines, based on signaling or the agreement, to receive parameter 2 from the DCI in the predefined format.

[0160] The number of bits for parameter 2 is agreed upon by the base station and UE3, or configured by the base station.

[0161] The base station configures UE3 to receive the starting bit position of parameter 2 in a defined DCI format. UE3 determines the number of bits for parameter 2 based on signaling or convention, and determines the starting bit position of parameter 2 in the defined DCI format.

[0162] The base station configures a time-frequency resource for the UE to listen to a DCI in a specified format. That is, the base station associates this specified DCI with a time-frequency resource configuration, such as configuring a CORESET and a search space. Within this time-frequency resource, the base station transmits the specified DCI to the UE, and this specified DCI is transmitted based on an agreed-upon RNTI (which can be a public RNTI, known to multiple UEs). Different UEs receive the specified DCI in this time-frequency resource and retrieve their respective parameters 1 and 2 from it.

[0163] In this scenario, the DCI format carries parameters 1 and 2 for UE1, parameter 1 for UE2, and parameter 2 for UE3. That is, depending on the base station configuration, different UEs can carry the same or different parameters in the same DCI format. Clearly, this approach is more flexible to support UEs in different situations.

[0164] Within the cell, the base station schedules the PDSCH of UE1 to UE3 separately using different DCIs, or sends some unscheduled PDSCH DCIs to UE1 to UE3. Note that the UEs are required to provide HARQ-ACKs for these unscheduled PDSCH DCIs. Assuming the DCI contains at least parameter 3 (i.e., the number of interval units), the location of the scheduling unit corresponding to the PDSCH or the HARQ-ACK of the DCI can be known by UE1 to UE3. In this way, the base station can schedule the PDSCHs or HARQ-ACKs corresponding to the DCIs of UE1 to UE3 within the same scheduling unit, or in different scheduling units. Specifically, the DCI for UE1 does not contain parameters 1 and 2, the DCI for UE2 does not contain parameter 1, and the DCI for UE3 does not contain parameter 2. After receiving the DCI, UE1 to UE3 can determine the location of the scheduling unit from which the HARQ-ACK was transmitted.

[0165] The base station transmits a DCI in a predefined format, containing parameters 1 and / or 2 for UE1 to UE3 according to configured bit positions. UE1 to UE3 receive the DCI, obtain their respective parameters 1 and / or 2, and determine the time-frequency resource for uplink control information and / or the power used to transmit the uplink control information based on parameters 1 and / or 2. UE1 to UE3 transmit their respective uplink control information within the determined time-frequency resource and (if parameter 2 is present) using the transmission power determined based on parameter 2. The base station also receives the corresponding uplink control information from the time-frequency resource of each UE based on the parameters 1 and / or 2 configured for UE1 to UE3, using the corresponding power (determined based on parameter 2).

[0166] For example, for UE1, the formatted DCI carries parameters 1 and 2. Therefore, UE1 receives the formatted DCI and obtains parameters 1 and 2. Based on parameter 1, it determines the time-frequency resources for uplink control information, and based on parameter 2, it determines the power used for transmission of the uplink control information. The base station receives the uplink control information of UE1 based on parameters 1 and 2 configured for UE1 in the formatted DCI.

[0167] For example, for UE2, the DCI in the specified format carries parameter 1, but not parameter 2. Therefore, UE2 receives the DCI in the specified format and obtains parameter 1 (parameter 2 can be obtained through the DCI of the PDSCH or other methods), and determines the time-frequency resources for uplink control information based on parameter 1. The base station receives the uplink control information of UE2 based on parameter 1 configured for UE2 in the DCI in the specified format.

[0168] For example, for UE3, the DCI in the specified format carries parameter 2, but not parameter 1. Therefore, UE3 receives the DCI in the specified format and obtains parameter 2 (parameter 1 can be obtained through the DCI of the PDSCH or other methods), and determines the power used for uplink control information transmission based on parameter 2. The base station receives the uplink control information of UE3 based on parameter 2 configured for UE3 in the DCI in the specified format.

[0169] In the above embodiments, a DCI with a set format can simultaneously carry the different parameters of different UEs, thus enabling the DCI with the set format to have a wider range of applications.

[0170] Specifically, the DCI in the specified format is transmitted before the same scheduling unit, and the PDCCH containing the DCI in the specified format satisfies a predefined timeline. For example, the predefined timeline is: the last symbol of the PDCCH containing the DCI in the specified format is no later than m symbols before the start symbol of the same scheduling unit; or, the last symbol of the PDCCH containing the DCI in the specified format is at least m symbols apart from the start symbol of the same scheduling unit; or, for a UE, the last symbol of the PDCCH containing the DCI in the specified format is at least m1 symbols apart from the start symbol of the uplink control channel resource determined for the UE; wherein the values ​​of m and m1 can be predefined based on the duration of the UE decoding the PDCCH and the duration of preparing uplink control information.

[0171] In one embodiment, the DCI in the set format includes time-domain resources and / or frequency-domain resources of different types of UCI for different UEs.

[0172] The base station and UE1 agree, or the base station configures UE1 via signaling, that the aforementioned parameters 1 and 2 are received from the DCI in a predefined format for HARQ-ACK information. UE1 determines, based on signaling or the agreement, to receive the aforementioned parameters 1 and 2 from the predefined format DCI.

[0173] The base station and UE1 agree, or the base station configures, the number of bits for parameter 1 and the number of bits for parameter 2. The base station and UE1 agree, or the base station configures, in a set format DCI, that parameter 1 of a UE1 is placed before (or after) parameter 2, and the bit information of parameter 1 and parameter 2 is placed consecutively.

[0174] The base station and UE2 agree, or the base station configures UE2 via signaling, that parameter 1 mentioned above is received from the DCI in a predefined format for CSI information. UE2 determines, based on signaling or the agreement, to receive parameter 1 from the DCI in the predefined format.

[0175] The number of bits for parameter 1 is agreed upon by the base station and UE2, or configured by the base station.

[0176] The base station configures the position of the starting bit of the parameters to be received in the DCI of the set format for each different UE.

[0177] Within the cell, the base station schedules UE1's PDSCH via DCI, or sends some unscheduled PDSCH DCIs to UE1. Note that the UE is required to provide HARQ-ACK for these unscheduled PDSCH DCIs. Assuming that the DCI contains at least the aforementioned parameter 3 (i.e., the number of interval units), the location of the scheduling unit n corresponding to the PDSCH or the HARQ-ACK corresponding to the DCI can be known by UE1.

[0178] Within the cell, the base station configured CSI transmission for UE2, indicated the location of the scheduling unit n to which the CSI was transmitted, and configured the power of the CSI transmission, but did not configure specific time and frequency resources.

[0179] The base station sends a DCI in a predefined format, including UE1's parameters 1 and 2 according to configured bit positions, and also including UE2's parameter 1 according to configured bit positions. UE1 receives the predefined DCI, obtains parameters 1 and 2, and determines the time-frequency resources for transmitting the HARQ-ACK and the power for transmitting the HARQ-ACK based on parameter 1 in the aforementioned scheduling unit n. UE2 receives the predefined DCI, obtains parameter 1, and determines the time-frequency resources for transmitting the CSI based on parameter 1 in the aforementioned scheduling unit n. Then, UE1 transmits the HARQ-ACK based on the time-frequency resources and power determined by parameters 1 and 2. UE2 transmits the CSI based on the time-frequency resources determined by parameter 1. The base station also receives UE1's HARQ-ACK and UE2's CSI based on the parameters included in the predefined DCI of UE1 and UE2.

[0180] Specifically, the DCI in the specified format is transmitted before the same scheduling unit, and the PDCCH containing the DCI in the specified format satisfies a predefined timeline. For example, the predefined timeline is: the last symbol of the PDCCH containing the DCI in the specified format is no later than m symbols before the start symbol of the same scheduling unit; or, the last symbol of the PDCCH containing the DCI in the specified format is at least m symbols apart from the start symbol of the same scheduling unit; or, for a UE, the last symbol of the PDCCH containing the DCI in the specified format is at least m1 symbols apart from the start symbol of the uplink control channel resource determined for the UE; wherein the values ​​of m and m1 can be predefined based on the duration of the UE decoding the PDCCH and the duration of preparing uplink control information.

[0181] This application also provides a downlink control information transmission device. Figure 3 This is a schematic diagram of a downlink control information transmission device according to one embodiment. Figure 3 As shown, the downlink control information transmission device includes:

[0182] The sending module 310 is configured to send a DCI in a set format, wherein the DCI in the set format simultaneously carries uplink control information related parameters of at least one second communication node, and the DCI in the set format is different from the DCI used for scheduling PDSCH.

[0183] The communication module 320 is configured to communicate with at least one second communication node based on the defined DCI format.

[0184] In one embodiment, the sending module 310 is specifically configured to send the DCI in the set format to at least one second communication node based on a predefined RNTI.

[0185] In one embodiment, the device further includes:

[0186] The first signaling sending module is configured to send a first signaling, which is used to instruct at least one second communication node to receive corresponding uplink control information related parameters from the DCI of the set format; the first signaling includes at least one of RRC signaling and MAC CE signaling.

[0187] In one embodiment, the device further includes:

[0188] The second signaling transmission module is configured to transmit a second signaling, which is used to indicate to at least one second communication node the start bit position of the uplink control information related parameters of the corresponding second communication node in the DCI of the set format.

[0189] The second signaling includes at least one of RRC signaling and MAC CE signaling.

[0190] In one embodiment, the number of bits for the uplink control information related parameters of each second communication node is the same; or,

[0191] The device also includes a third signaling transmission module, configured to transmit third signaling, wherein the number of bits of the uplink control information related parameters of each second communication node is indicated by the third signaling; the third signaling includes at least one of RRC signaling and MAC CE signaling.

[0192] In one embodiment, for any one of the second communication nodes, when the first communication node is configured to receive the DCI in the specified format,

[0193] The DCI used to schedule the PDSCH does not contain the aforementioned uplink control information parameters, or...

[0194] The DCI that schedules the PDSCH includes the uplink control information related parameters, and the second communication node adopts the uplink control information related parameters in the DCI with the set format.

[0195] In one embodiment, for any one of the second communication nodes, if the first communication node is not configured to receive the DCI in the specified format,

[0196] The DCI of the PDSCH scheduling includes the uplink control information related parameters, and the second communication node adopts the uplink control information related parameters in the DCI of the PDSCH scheduling.

[0197] In one embodiment, for any one of the second communication nodes, before the first communication node configures the second communication node to receive the DCI of the predetermined format, the apparatus further includes:

[0198] The information receiving module is configured to receive capability information of the second communication node and determine, based on the capability information, whether the second communication node has the capability to receive DCI in the set format.

[0199] In one embodiment, the uplink control information related parameters of each second communication node include at least one of the following:

[0200] Resource indication is used to determine at least one of the time-domain resources and frequency-domain resources in the scheduling unit for uplink control information;

[0201] Power parameters are used to determine the power used to transmit uplink control information;

[0202] The number of interval units is used to determine the location of the scheduling unit where uplink control information is transmitted;

[0203] Type of uplink control information transmission;

[0204] The mechanism for generating uplink control information;

[0205] Enhanced HARQ-ACK codebook indicator;

[0206] PDSCH group index;

[0207] HARQ-ACK retransmission instruction;

[0208] Cell indication of uplink control information.

[0209] In one embodiment, the device further includes:

[0210] The fourth signaling transmission module is configured to transmit a fourth signaling, which is used to instruct at least one second communication node to receive at least one parameter from the DCI of the set format.

[0211] Different second communication nodes may receive the same or different parameters from the DCI in the specified format;

[0212] The fourth signaling includes at least one of RRC signaling and MAC CE signaling.

[0213] In one embodiment, the device further includes:

[0214] The bitmap signaling transmission module is configured to instruct at least one second communication node to receive at least one parameter from the DCI of the specified format via bitmap signaling; different second communication nodes may receive the same or different parameters from the DCI of the specified format.

[0215] In one embodiment, in the defined DCI format, the bit information corresponding to the uplink control information related parameters of a second communication node is placed consecutively; when the uplink control information related parameters include at least two parameters, the bit information corresponding to the at least two parameters is placed sequentially.

[0216] In one embodiment, the formatted DCI also carries at least one of the following parameters for at least one second communication node: parameters for determining the time slot format; parameters for determining the effective resource block set; parameters for determining the search space set group handover; parameters for determining the channel occupancy time duration; parameters for determining resources that do not transmit DL data; parameters for determining the CSIPUCCH power or CSIPUSCH power; parameters for determining the SRS power; parameters for determining resources that do not transmit UL data; parameters for determining the availability of soft resources; parameters for determining power-saving information other than DRXActive Time; parameters for determining the availability indication of paging early indication and tracking parameter signal; parameters for determining the time domain resources of uplink data; parameters for determining the frequency domain resources of uplink data; parameters for determining the aperiodic beam indication and associated time resources; parameters for determining the cell DTX configuration to activate or deactivate at least one serving cell; parameters for determining the cell DRX configuration to activate or deactivate at least one serving cell; and parameters for determining the NES mode indication of the primary cell.

[0217] In one embodiment, the device further includes:

[0218] The configuration module is set to configure the location of the PDCCH where the DCI of the specified format is located.

[0219] In one embodiment, the total number of bits in the defined format DCI is equal to the total number of bits in the fallback DCI; wherein the fallback DCI includes a DCI with a fixed number of parameters and a fixed number of bits for each parameter.

[0220] The downlink control information transmission device proposed in this embodiment belongs to the same inventive concept as the downlink control information transmission method proposed in the above embodiments. Technical details not described in detail in this embodiment can be found in any of the above embodiments. Furthermore, this embodiment has the same beneficial effects as performing the downlink control information transmission method.

[0221] This application also provides a downlink control information transmission device. Figure 4 This is a schematic diagram of a downlink control information transmission device according to one embodiment. Figure 4 As shown, the downlink control information transmission device includes:

[0222] The receiving module 410 is configured to receive a DCI in a set format, wherein the DCI in the set format simultaneously carries uplink control information related parameters of at least one second communication node, and the DCI in the set format is different from the DCI used for scheduling PDSCH.

[0223] The communication module 420 is configured to communicate with the first communication node based on the set DCI format.

[0224] In one embodiment, the receiving module 410 is specifically configured to receive the DCI in the set format based on a predefined RNTI.

[0225] In one embodiment, the device further includes:

[0226] The first signaling receiving module is configured to receive a first signaling, which is used to notify the second communication node to receive corresponding uplink control information related parameters from the DCI of the set format; the first signaling includes at least one of RRC signaling and MAC CE signaling.

[0227] In one embodiment, the device further includes:

[0228] The second signaling receiving module is configured to receive second signaling, which is used to indicate the starting bit position of the uplink control information related parameters of the second communication node in the DCI of the set format.

[0229] The second signaling includes at least one of RRC signaling and MAC CE signaling.

[0230] In one embodiment, the number of bits for the uplink control information related parameters of each second communication node is the same; or,

[0231] The device also includes a third signaling receiving module, configured to receive third signaling, wherein the number of bits of the uplink control information related parameters of each second communication node is indicated by the third signaling; the third signaling includes at least one of RRC signaling and MAC CE signaling.

[0232] In one embodiment, when the first communication node is configured to receive the DCI of the set format, the DCI for scheduling the PDSCH does not include the uplink control information related parameters, or...

[0233] The DCI that schedules the PDSCH includes the uplink control information related parameters, and the second communication node adopts the uplink control information related parameters in the DCI with the set format.

[0234] In one embodiment, when the first communication node is not configured to receive the DCI of the set format, the DCI of the scheduled PDSCH includes the uplink control information related parameters, and the second communication node adopts the uplink control information related parameters in the DCI of the scheduled PDSCH.

[0235] In one embodiment, the device further includes:

[0236] The reporting module is configured to report capability information to the first communication node. Based on the capability information, the second communication node can be determined to have or not have the capability to receive DCI in the specified format.

[0237] In one embodiment, the uplink control information related parameters of each second communication node include at least one of the following:

[0238] Resource indication is used to determine at least one of the time-domain resources and frequency-domain resources in the scheduling unit for uplink control information;

[0239] Power parameters are used to determine the power used to transmit uplink control information;

[0240] The number of interval units determines the location of the scheduling unit that indicates the transmission of uplink control information;

[0241] Type of uplink control information transmission;

[0242] The mechanism for generating uplink control information;

[0243] Enhanced HARQ-ACK codebook indicator;

[0244] PDSCH group index;

[0245] HARQ-ACK retransmission instruction;

[0246] Cell indication of uplink control information.

[0247] In one embodiment, the device further includes:

[0248] The fourth signaling receiving module is configured to receive a fourth signaling, which is used to instruct the second communication node to receive at least one parameter from the DCI of the set format.

[0249] Different second communication nodes may receive the same or different parameters from the DCI in the specified format;

[0250] The fourth signaling includes at least one of RRC signaling and MAC CE signaling.

[0251] In one embodiment, the device further includes:

[0252] Bitmap signaling receiving module, configured to receive bitmap signaling, the bitmap signaling being used to instruct the second communication node to receive at least one parameter from the DCI of the set format;

[0253] Different second communication nodes may receive the same or different parameters from the DCI in the specified format.

[0254] In one embodiment, in the defined DCI format, the bit information corresponding to the uplink control information related parameters of a second communication node is placed consecutively; when the uplink control information related parameters include at least two parameters, the bit information corresponding to the at least two parameters is placed sequentially.

[0255] In one embodiment, the formatted DCI is further used to carry at least one of the following parameters of the second communication node: parameters for determining the time slot format; parameters for determining the effective resource block set; parameters for determining the search space set group switching; parameters for determining the channel occupancy time duration; parameters for determining resources that do not transmit DL data; parameters for determining the CSIPUCCH power or CSIPUSCH power; parameters for determining the SRS power; parameters for determining resources that do not transmit UL data; parameters for determining the availability of soft resources; parameters for determining power-saving information other than DRX ActiveTime; parameters for determining the availability indication of paging early indication and tracking parameter signal; parameters for determining the time domain resources of uplink data; parameters for determining the frequency domain resources of uplink data; parameters for determining the aperiodic beam indication and associated time resources; parameters for determining the cell DTX configuration to activate or deactivate at least one serving cell; parameters for determining the cell DRX configuration to activate or deactivate at least one serving cell; and parameters for determining the NES mode indication of the primary cell.

[0256] In one embodiment, the device further includes a location determination module configured to determine the location of the PDCCH containing the DCI of the set format.

[0257] In one embodiment, the total number of bits in the defined format DCI is equal to the total number of bits in the fallback DCI; wherein the fallback DCI includes a DCI with a fixed number of parameters and a fixed number of bits for each parameter.

[0258] This application also provides a communication node. Figure 5 This is a schematic diagram of the hardware structure of a communication node provided in one embodiment, such as... Figure 5 As shown, the communication node provided in this application includes a processor 510 and a memory 520; the processor 510 in the communication node can be one or more. Figure 5 Taking a processor 510 as an example; the memory 520 is configured to store one or more programs; the one or more programs are executed by the one or more processors 510, so that the one or more processors 510 implement the downlink control information transmission method as described in the embodiments of this application.

[0259] The communication node also includes: a communication device 530, an input device 540, and an output device 550.

[0260] The processor 510, memory 520, communication device 530, input device 540, and output device 550 in the communication node can be connected via a bus or other means. Figure 5 Taking the example of a connection between China and Israel via a bus.

[0261] Input device 540 can be used to receive input digital or character information, and to generate key signal inputs related to user settings and function control of the communication node. Output device 550 may include display devices such as a display screen.

[0262] The communication device 530 may include a receiver and a transmitter. The communication device 530 is configured to perform information transmission and reception communication under the control of the processor 510.

[0263] The memory 520, as a computer-readable storage medium, can be configured to store software programs, computer-executable programs, and modules, such as program instructions / modules corresponding to the downlink control information transmission method described in the embodiments of this application. The memory 520 may include a program storage area and a data storage area, wherein the program storage area may store the operating system and at least one application program required for a function; the data storage area may store data created based on the use of the communication node, etc. Furthermore, the memory 520 may include high-speed random access memory and may also include non-volatile memory, such as at least one disk storage device, flash memory device, or other non-volatile solid-state storage device. In some instances, the memory 520 may further include memory remotely located relative to the processor 510, and these remote memories can be connected to the communication node via a network. Examples of such networks include, but are not limited to, the Internet, corporate intranets, local area networks, mobile communication networks, and combinations thereof.

[0264] This application also provides a storage medium storing a computer program, which, when executed by a processor, implements any of the downlink control information transmission methods or downlink control information transmission methods described in this application.

[0265] This application also provides a computer program product, including a computer program / instruction, which, when executed by a processor, implements any of the downlink control information transmission methods or downlink control information transmission methods described in this application.

[0266] The computer storage medium in this application embodiment can be any combination of one or more computer-readable media. The computer-readable medium can be a computer-readable signal medium or a computer-readable storage medium. For example, a computer-readable storage medium can be, but is not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination thereof. More specific examples of computer-readable storage media (a non-exhaustive list) include: an electrical connection having one or more wires, a portable computer disk, a hard disk, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM), flash memory, optical fiber, portable CD-ROM, optical storage device, magnetic storage device, or any suitable combination thereof. The computer-readable storage medium can be any tangible medium containing or storing a program that can be used by or in conjunction with an instruction execution system, apparatus, or device.

[0267] Computer-readable signal media may include data signals propagated in baseband or as part of a carrier wave, carrying computer-readable program code. Such propagated data signals may take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination thereof. Computer-readable signal media may also be any computer-readable medium other than computer-readable storage media, which can send, propagate, or transmit programs for use by or in connection with an instruction execution system, apparatus, or device.

[0268] Program code contained on a computer-readable medium may be transmitted using any suitable medium, including but not limited to: wireless, wire, optical fiber, radio frequency (RF), etc., or any suitable combination thereof.

[0269] Computer program code for performing the operations of this application can be written in one or more programming languages ​​or a combination thereof, including object-oriented programming languages ​​such as Java, Smalltalk, and C++, as well as conventional procedural programming languages ​​such as "C" or similar programming languages. The program code can be executed entirely on the user's computer, partially on the user's computer, as a standalone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In cases involving remote computers, the remote computer can be connected to the user's computer via any type of network, including a local area network (LAN) or a wide area network (WAN), or it can be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0270] This application also provides a computer program product, including a computer program / instruction, which, when executed by a processor, implements the downlink control information transmission method as described in any of the above embodiments.

[0271] The above description is merely an exemplary embodiment of this application and is not intended to limit the scope of protection of this application.

[0272] Those skilled in the art will understand that the term user terminal encompasses any suitable type of wireless user equipment, such as mobile phones, portable data processing portable web browsers, or vehicle-mounted mobile stations.

[0273] Generally, the various embodiments of this application can be implemented in hardware or dedicated circuitry, software, logic, or any combination thereof. For example, some aspects can be implemented in hardware, while others can be implemented in firmware or software that can be executed by a controller, microprocessor, or other computing device, although this application is not limited thereto.

[0274] Embodiments of this application can be implemented by executing computer program instructions through the data processor of a mobile device, for example, in a processor entity, or through hardware, or through a combination of software and hardware. The computer program instructions can be assembly instructions, Instruction Set Architecture (ISA) instructions, machine instructions, machine-dependent instructions, microcode, firmware instructions, status setting data, or source code or object code written in any combination of one or more programming languages.

[0275] Any block diagram of logical flow in the accompanying drawings of this application may represent program steps, or may represent interconnected logic circuits, modules, and functions, or may represent a combination of program steps and logic circuits, modules, and functions. The computer program may be stored in memory. The memory may be of any type suitable to the local technical environment and may be implemented using any suitable data storage technology, such as, but not limited to, read-only memory (ROM), random access memory (RAM), optical storage devices and systems (Digital Video Disc (DVD) or Compact Disk (CD), etc.). Computer-readable media may include non-transitory storage media. The data processor may be of any type suitable to the local technical environment, such as, but not limited to, general-purpose computers, special-purpose computers, microprocessors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), and processors based on multi-core processor architectures.

[0276] A detailed description of exemplary embodiments of this application has been provided above through exemplary and non-limiting examples. However, various modifications and adjustments to the above embodiments will be apparent to those skilled in the art when considered in conjunction with the accompanying drawings and claims, without departing from the scope of this application. Therefore, the proper scope of this application will be determined by the claims.

Claims

1. A downlink control information transmission method, applied to a first communication node, characterized in that, include: Send downlink control information (DCI) in a predefined format, wherein the predefined DCI also carries uplink control information related parameters of at least one second communication node, and the predefined DCI is different from the DCI used to schedule the physical downlink shared channel (PDSCH). Based on the defined DCI format, it communicates with at least one second communication node.

2. The method according to claim 1, characterized in that, Sending a DCI in a predefined format includes: sending the predefined DCI to at least one second communication node based on a predefined Radio Network Temporary Identifier (RNTI).

3. The method according to claim 1, characterized in that, Also includes: Send a first signaling message, which is used to instruct at least one second communication node to receive corresponding uplink control information related parameters from the DCI in the set format; The first signaling includes at least one of Radio Resource Control (RRC) signaling and Media Access Control-Control Unit (MAC CE) signaling.

4. The method according to claim 1, characterized in that, Also includes: Send a second signaling message, the second signaling message being used to indicate to at least one second communication node the start bit position of the uplink control information related parameters of the corresponding second communication node in the DCI of the set format; The second signaling includes at least one of RRC signaling and MAC CE signaling.

5. The method according to claim 1, characterized in that, The number of bits for the uplink control information related parameters of each second communication node is the same; or, The number of bits for the uplink control information related parameters of each second communication node is indicated by a third signaling; the third signaling includes at least one of RRC signaling and MAC CE signaling.

6. The method according to claim 1, characterized in that, For any one of the second communication nodes, if the first communication node is configured to receive the DCI in the specified format... The DCI used to schedule the PDSCH does not contain the aforementioned uplink control information parameters, or... The DCI that schedules the PDSCH includes the uplink control information related parameters, and the second communication node adopts the uplink control information related parameters in the DCI with the set format.

7. The method according to claim 1, characterized in that, For any one of the second communication nodes, if the first communication node is not configured to receive the DCI in the specified format, The DCI of the PDSCH scheduling includes the uplink control information related parameters, and the second communication node adopts the uplink control information related parameters in the DCI of the PDSCH scheduling.

8. The method according to claim 1, characterized in that, For any one of the second communication nodes, before the first communication node configures the second communication node to receive the DCI of the specified format, the method further includes: Receive capability information of the second communication node, and determine whether the second communication node has the capability to receive DCI of the set format based on the capability information.

9. The method according to claim 1, characterized in that, The uplink control information parameters for each second communication node include at least one of the following: Resource indication is used to determine at least one of the time-domain resources and frequency-domain resources in the scheduling unit for uplink control information; Power parameters are used to determine the power used to transmit uplink control information; The number of interval units is used to determine the location of the scheduling unit where uplink control information is transmitted; Type of uplink control information transmission; The mechanism for generating uplink control information; Enhanced Hybrid Automatic Repeat Request Acknowledgment (HARQ-ACK) codebook indicator; PDSCH group index; HARQ-ACK retransmission instruction; Cell indication of uplink control information.

10. The method according to claim 1, characterized in that, Also includes: Send a fourth signaling message, the fourth signaling message being used to instruct at least one second communication node to receive at least one parameter from the DCI of the set format; Different second communication nodes may receive the same or different parameters from the DCI in the specified format; The fourth signaling includes at least one of RRC signaling and MAC CE signaling.

11. The method according to claim 1, characterized in that, Also includes: The bitmap signaling instructs at least one second communication node to receive at least one parameter from the DCI in the specified format; Different second communication nodes may receive the same or different parameters from the DCI in the specified format.

12. The method according to claim 1, characterized in that, In the defined DCI format, the bit information corresponding to the uplink control information related parameters of a second communication node is placed consecutively. When the uplink control information related parameters include at least two parameters, the bit information corresponding to the at least two parameters is placed in sequence.

13. The method according to claim 1, characterized in that, The configured DCI also carries at least one of the following parameters of at least one second communication node: Parameters used to determine the time slot format; parameters used to determine the set of valid resource blocks; parameters used to determine the search space set group switching; parameters used to determine the channel occupancy time; parameters used to determine resources that do not transmit downlink data; parameters used to determine the power of the Physical Uplink Control Channel (PUCCH) or Physical Uplink Shared Channel (PUSCH) for transmitting Channel State Information (CSI); parameters used to determine the power of the SRS; parameters used to determine resources that do not transmit UL data; parameters used to determine the availability of soft resources; parameters used to determine power-saving information other than the activation time of discontinuous reception DRX. Parameters used to determine the availability of paging early indication and tracking parameter signals; Parameters used to determine the time-domain resources of uplink data; Parameters used to determine the frequency domain resources for uplink data; parameters used to determine the aperiodic beam indication and associated time resources; Parameters used to determine the cell discontinuous transmission DTX configuration for activating or deactivating at least one serving cell; Parameters used to determine whether to activate or deactivate the cell discontinuous reception DRX configuration of at least one serving cell; Parameters used to determine the Network Energy Saving (NES) mode indication for the primary cell.

14. The method according to claim 1, characterized in that, Also includes: Configure the location of the physical uplink control channel (PDCCH) where the DCI of the specified format is located.

15. The method according to claim 1, characterized in that, The total number of bits in the defined format DCI is equal to the total number of bits in the fallback DCI; wherein the fallback DCI includes a DCI with a fixed number of parameters and a fixed number of bits for each parameter.

16. A downlink control information transmission method, applied to a second communication node, characterized in that, include: Receive downlink control information (DCI) in a predefined format, wherein the predefined DCI also carries uplink control information related parameters of at least one second communication node, and the predefined DCI is different from the DCI used for scheduling PDSCH. Based on the defined DCI format, it communicates with the first communication node.

17. The method according to claim 16, characterized in that, Receiving a DCI in a predefined format includes: receiving the DCI in the predefined format based on a predefined RNTI.

18. The method according to claim 16, characterized in that, Also includes: Receive the first signaling, which is used to notify the second communication node to receive the corresponding uplink control information related parameters from the DCI of the set format; The first signaling includes at least one of RRC signaling and MAC CE signaling.

19. The method according to claim 16, characterized in that, Also includes: Receive a second signaling, the second signaling being used to indicate the start bit position of the uplink control information related parameters of the second communication node in the DCI of the set format; The second signaling includes at least one of RRC signaling and MAC CE signaling.

20. The method according to claim 16, characterized in that, The number of bits for the uplink control information related parameters of each second communication node is the same; or, The number of bits for the uplink control information related parameters of each second communication node is indicated by a third signaling; the third signaling includes at least one of RRC signaling and MAC CE signaling.

21. The method according to claim 16, characterized in that, When the first communication node is configured to receive the DCI in the specified format, The DCI used to schedule the PDSCH does not contain the aforementioned uplink control information parameters, or... The DCI that schedules the PDSCH includes the uplink control information related parameters, and the second communication node adopts the uplink control information related parameters in the DCI with the set format.

22. The method according to claim 16, characterized in that, If the first communication node is not configured to receive the DCI in the specified format, then... The DCI of the PDSCH scheduling includes the uplink control information related parameters, and the second communication node adopts the uplink control information related parameters in the DCI of the PDSCH scheduling.

23. The method according to claim 16, characterized in that, Also includes: The first communication node reports capability information, and based on the capability information, the second communication node can be determined to have or not have the capability to receive DCI in the specified format.

24. The method according to claim 16, characterized in that, The uplink control information parameters for each second communication node include at least one of the following: Resource indication is used to determine at least one of the time-domain resources and frequency-domain resources in the scheduling unit for uplink control information; Power parameters are used to determine the power used to transmit uplink control information; The number of interval units is used to determine the location of the scheduling unit where uplink control information is transmitted; Type of uplink control information transmission; The mechanism for generating uplink control information; Enhanced HARQ-ACK codebook indicator; PDSCH group index; HARQ-ACK retransmission instruction; Cell indication of uplink control information.

25. The method according to claim 16, characterized in that, Also includes: Receive a fourth signaling message, the fourth signaling message being used to instruct the second communication node to receive at least one parameter from the DCI of the set format; Different second communication nodes may receive the same or different parameters from the DCI in the specified format; The fourth signaling includes at least one of RRC signaling and MAC CE signaling.

26. The method according to claim 16, characterized in that, Also includes: Receive bitmap signaling, the bitmap signaling being used to instruct the second communication node to receive at least one parameter from the DCI of the set format; Different second communication nodes may receive the same or different parameters from the DCI in the specified format.

27. The method according to claim 16, characterized in that, In the defined DCI format, the bit information corresponding to the uplink control information related parameters of a second communication node is placed consecutively. When the uplink control information related parameters include at least two parameters, the bit information corresponding to the at least two parameters is placed in sequence.

28. The method according to claim 16, characterized in that, The formatted DCI also carries at least one of the following parameters of the second communication node: Parameters used to determine the time slot format; parameters used to determine the set of valid resource blocks; parameters used to determine the search space set group switching; parameters used to determine the channel occupancy time; parameters used to determine the resources that do not transmit DL data; parameters used to determine the power of CSIPUCCH or CSIPUSCH transmission; parameters used to determine the power of SRS transmission; parameters used to determine the resources that do not transmit UL data. Parameters used to determine the availability of soft resources; parameters used to determine power-saving information other than DRX Active Time; parameters used to determine the availability indication of paging early indication and tracking parameter signals; Parameters used to determine the time-domain resources of uplink data; Parameters used to determine the frequency domain resources for uplink data; parameters used to determine the aperiodic beam indication and associated time resources; Parameters used to determine whether to activate or deactivate at least one serving cell in the cell DTX configuration; Parameters used to determine whether to activate or deactivate the cell DRX configuration of at least one serving cell; Parameters used to determine the NES mode indication of the primary cell.

29. The method according to claim 16, characterized in that, Also includes: Determine the location of the DCI in the specified format within the PDCCH.

30. The method according to claim 16, characterized in that, The total number of bits in the defined format DCI is equal to the total number of bits in the fallback DCI; wherein the fallback DCI includes a DCI with a fixed number of parameters and a fixed number of bits for each parameter.

31. A communication node, characterized in that, include: Memory, and one or more processors; The memory is configured to store one or more programs; When the one or more programs are executed by the one or more processors, the one or more processors implement the downlink control information transmission method as described in any one of claims 1-30.

32. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the program is executed by the processor, it implements the downlink control information transmission method as described in any one of claims 1-30.

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