A method and device for transmitting downlink control information DCI

Abstract

A method and device for transmitting downlink control information DCI, wherein the method includes: a network device can send a first DCI to a first terminal device according to first DCI format information in a first DCI format set, wherein the first DCI format set includes N DCI format information, and the N DCI format information respectively corresponds to data transmission functions of N different terminal devices. Since the first DCI set may include one or more DCI format information, and each DCI format information corresponds to a data transmission function of a terminal device, when the network device sends the first DCI, it can select a suitable DCI format for sending according to the data transmission function supported by the terminal device, thereby effectively reducing the resource overhead in the DCI sending process and improving the flexibility of energy-saving signal sending.

Description

Technical Field

[0001] This application relates to the field of wireless communication technologies, and particularly to a method and apparatus for transmitting downlink control information (DCI). Background Art

[0002] In order to reduce the power consumption of terminal devices, a wake-up signal (WUS) or a power saving signal / channel may be introduced in the new radio (NR) system of the 5th generation (5G) mobile communication technology. The WUS can be combined with the discontinuous reception (DRX) mechanism in the radio resource control (RRC) connected state. For a terminal device supporting the WUS, in each DRX cycle, the network device can send the WUS during the inactive time or outside the active time of the terminal device.

[0003] For the design of the WUS, a possible solution is to reuse the design of the existing physical downlink control channel (PDCCH) in NR, that is, to design the WUS as a downlink control channel, such as the PDCCH. The terminal device can determine whether to "wake up" by detecting the corresponding PDCCH. Considering the resource consumption on the network side, the WUS can also be designed as a PDCCH for a group of terminal devices (UE group). The network device can configure a group of terminal devices to detect the same Group PDCCH, and the Group PDCCH carries Group DCI, which is used to indicate the corresponding power saving information (such as whether to "wake up") of each terminal device in the group.

[0004] In the internet of things (IoT) scenario, there are different types of customized terminal devices, such as cameras for video surveillance, industrial sensors, etc. These different types of terminals have different service and power characteristics and can be configured with different power saving functions. Different power saving functions mean that different lengths of bits in the DCI are required to indicate. In the prior art, multiple power saving functions can be indicated in the WUS, and the lengths of the group DCI sent by the network device to the mMTC-type terminal devices are the same. If a certain type of terminal device is only configured with some power saving functions, it will cause more resource waste in the DCI. Summary of the Invention

[0005] An embodiment of the present application provides a method and apparatus for transmitting downlink control information (DCI), which is used to provide different DCI formats for different types of terminal devices, so as to enhance the flexibility of sending energy-saving signals and reduce resource consumption.

[0006] In a first aspect, an embodiment of the present application provides a method for transmitting DCI. This method can be applied to a network device and includes: the network device sends first DCI format information to a first terminal device. The first DCI format information is included in a first DCI format set, and the first DCI format set includes N DCI format information. The N DCI format information respectively corresponds to the data transmission functions of N different terminal devices, where N is a positive integer; the network device sends a first DCI to the first terminal device according to the first DCI format information.

[0007] By adopting the technical solution provided by the present application, the network device can send a first DCI to the first terminal device according to the first DCI format information in the first DCI format set. Since the first DCI set may include one or more DCI format information, and each DCI format information corresponds to a data transmission function of a terminal device, when the network device sends the first DCI, it can select an appropriate DCI format for sending according to the data transmission function supported by the terminal device, thereby effectively reducing the resource overhead in the process of sending DCI and improving the flexibility of sending energy-saving signals.

[0008] In combination with the first aspect, in a possible design of the first aspect, the data transmission function includes one or more of the following: whether to wake up during the discontinuous reception (DRX) activation period, whether to configure the channel state information (CSI) measurement and reporting function before the DRX activation period, the bandwidth part (BWP) switching scheme, the configuration scheme of the number of receiving antennas during the DRX activation period, the cross-subframe scheduling scheme during the DRX activation period, and the physical downlink control channel skipping (PDCCH skipping) scheme during the DRX activation period.

[0009] In combination with the first aspect, in a possible design of the first aspect, the first DCI includes M information blocks, where M is a positive integer; the first DCI format information includes indication information for indicating one or more of the following: the index of the information block corresponding to the first terminal device among the M information blocks; or, the length of the first DCI; or, the length of the information block. In this way, after receiving the first DCI, the second terminal device can determine its corresponding information block from the M information blocks included in the first DCI according to the content indicated in the first DCI format information, and then obtain the energy-saving information.

[0010] In combination with the first aspect, in a possible design of the first aspect, the network device may also send information for indicating a first radio network temporary identity (RNTI) to the first terminal device. The first RNTI is used for the first terminal device to receive the first DCI, and the first RNTI corresponds to the first DCI format information. That is, different DCI formats may correspond to different RNTIs.

[0011] In combination with the first aspect, in a possible design of the first aspect, the time domain position where the network device sends the first DCI is in the inactive period of the DRX. The network device may also send information for indicating the time advance of the time domain position of the first DCI relative to the next DRX active period to the first terminal device.

[0012] In combination with the first aspect, in a possible design of the first aspect, the network device may send one or more of the following information through a radio resource control (RRC) message: the first DCI format information, the information for indicating the first RNTI, and the information for indicating the time advance of the time domain position of the first DCI relative to the next DRX active period. This facilitates the terminal device to receive the first DCI.

[0013] In a second aspect, an embodiment of the present application provides a method for transmitting DCI. The method may be applied to a terminal device and includes: the first terminal device receives first DCI format information from the network device. The first DCI format information is included in a first DCI format set, and the first DCI format set includes N DCI format information. The N DCI format information respectively corresponds to the data transmission functions of N different terminal devices, and N is a positive integer. The first terminal device receives the first DCI from the network device according to the first DCI format information.

[0014] By adopting the technical solution provided by the present application, the first terminal device may receive the first DCI sent by the network device according to the first DCI format information in the first DCI format set. Since the first DCI set may include one or more DCI format information, and each DCI format information corresponds to a data transmission function of a terminal device, when the network device sends the first DCI, it may select an appropriate DCI format for sending according to the data transmission function supported by the terminal device, thereby effectively reducing the resource overhead in the DCI sending process and improving the flexibility of sending energy-saving signals.

[0015] In combination with the second aspect, in a possible design of the second aspect, the data transmission function includes one or more of the following: whether to wake up during a discontinuous reception (DRX) activation period, whether to configure a channel state information (CSI) measurement and reporting function before the activation period, a bandwidth part (BWP) switching scheme, a configuration scheme for the number of receiving antennas during the DRX activation period, a cross-subframe scheduling scheme during the DRX activation period, and a physical downlink control channel skipping (PDCCH skipping) scheme during the DRX activation period.

[0016] In combination with the second aspect, in a possible design of the second aspect, the first downlink control information (DCI) includes M information blocks, where M is a positive integer; the first DCI format information includes indication information for indicating one or more of the following: the index of the information block corresponding to the first terminal device among the M information blocks; or, the length of the first DCI; or, the length of the information block. In this way, after receiving the first DCI, the second terminal device can determine its corresponding information block from the M information blocks included in the first DCI according to the content indicated in the first DCI format information, and thus obtain energy-saving information.

[0017] In combination with the second aspect, in a possible design of the second aspect, the first terminal device can also receive information for indicating a first radio network temporary identifier (RNTI) from the network device, where the first RNTI corresponds to the first DCI format information, that is, different DCI formats can correspond to different RNTIs; the first terminal device receives the first DCI according to the first RNTI.

[0018] In combination with the second aspect, in a possible design of the second aspect, the time domain position where the first terminal device receives the first DCI is in the non-activation period of DRX, and the first terminal device can also receive information for indicating the time advance of the time domain position of the first DCI relative to the next DRX activation period from the network device.

[0019] In combination with the second aspect, in a possible design of the second aspect, the first terminal device can also receive one or more of the following information through a radio resource control (RRC) message: the first DCI format information, the information for indicating the first RNTI, and the information for indicating the time advance of the time domain position of the first DCI relative to the next DRX activation period. This facilitates the terminal device to receive the first DCI.

[0020] In a third aspect, embodiments of the present application provide a communication device, which has the functions of the terminal device in the above-mentioned first aspect or any possible design of the first aspect. The communication device may be a terminal device, such as a handheld terminal device, a vehicle-mounted terminal device, etc., or a device included in the terminal device, such as a chip, or a device including the terminal device. The functions of the above-mentioned terminal device can be implemented by hardware or by hardware executing corresponding software, and the hardware or software includes one or more modules corresponding to the above functions.

[0021] The communication device may also have the functions of the network device in the above-mentioned second aspect or any possible design of the second aspect. The communication device may be a network device, such as a base station, or a device included in the network device, such as a chip. The functions of the above-mentioned network device can be implemented by hardware or by hardware executing corresponding software, and the hardware or software includes one or more modules corresponding to the above functions.

[0022] In a possible design, the structure of the communication device includes a processing module and a transceiver module. Among them, the processing module is configured to support the communication device to execute the corresponding functions in the above-mentioned first aspect or any design of the first aspect, or execute the corresponding functions in the above-mentioned second aspect or any design of the second aspect. The transceiver module is used to support the communication between the communication device and other communication devices. For example, when the communication device is a network device, it can send the first DCI format information to the first terminal device. The communication device may further include a storage module, which is coupled to the processing module and stores the necessary program instructions and data of the communication device. As an example, the processing module may be a processor, the communication module may be a transceiver, and the storage module may be a memory. The memory may be integrated with the processor or separately provided from the processor, which is not limited in the present application.

[0023] In another possible design, the structure of the communication device includes a processor and may further include a memory. The processor is coupled to the memory and can be used to execute the computer program instructions stored in the memory, so that the communication device executes the method in the above-mentioned first aspect or any possible design of the first aspect, or executes the method in the above-mentioned second aspect or any possible design of the second aspect. Optionally, the communication device further includes a communication interface, and the processor is coupled to the communication interface. When the communication device is a terminal device, the communication interface may be a transceiver or an input / output interface; when the communication device is a chip included in the terminal device, the communication interface may be the input / output interface of the chip. Optionally, the transceiver may be a transceiver circuit, and the input / output interface may be an input / output circuit.

[0024] Fourth aspect, an embodiment of the present application provides a chip system, including: a processor, the processor is coupled to a memory, and the memory is used to store programs or instructions. When the programs or instructions are executed by the processor, the chip system implements the methods in any possible design of the above first aspect, or implements the methods in any possible design of the above second aspect.

[0025] Optionally, the chip system further includes an interface circuit. The interface circuit is used to receive code instructions and transmit them to the processor.

[0026] Optionally, the processor in the chip system can be one or more. The processor can be implemented by hardware or by software. When implemented by hardware, the processor can be a logic circuit, an integrated circuit, etc. When implemented by software, the processor can be a general-purpose processor that implements by reading software code stored in the memory.

[0027] Optionally, the memory in the chip system can also be one or more. The memory can be integrated with the processor or separately arranged from the processor, which is not limited in the present application. Exemplarily, the memory can be a non-transitory processor, such as a read-only memory ROM, which can be integrated with the processor on the same chip or separately arranged on different chips. The present application does not make specific limitations on the type of the memory and the setting manner of the memory and the processor.

[0028] Fifth aspect, an embodiment of the present application provides a computer-readable storage medium, in which computer-readable instructions are stored. When a computer reads and executes the computer-readable instructions, the computer executes the methods in any possible design of the above first aspect, or executes the methods in any possible design of the above second aspect.

[0029] Sixth aspect, an embodiment of the present application provides a computer program product. When a computer reads and executes the computer program product, the computer executes the methods in any possible design of the above first aspect, or executes the methods in any possible design of the above second aspect.

[0030] Seventh aspect, an embodiment of the present application provides a communication system, which includes the network device and at least one terminal device described in the above aspects. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the network architecture of a communication system applicable to an embodiment of the present application;

[0032] Figure 2 It is a schematic flowchart of a method for transmitting DCI provided by an embodiment of the present application;

[0033] Figure 3 Schematic diagram of a DCI format provided by an embodiment of the present application;

[0034] Figure 4 Another process schematic diagram of a DCI transmission method provided by an embodiment of the present application;

[0035] Figure 5 Schematic diagram of multiple DCI formats in the first DCI format set provided by an embodiment of the present application;

[0036] Figure 6 Schematic diagram of the structure of a communication device provided by an embodiment of the present application;

[0037] Figure 7 Another schematic diagram of the structure of a communication device provided by an embodiment of the present application;

[0038] Figure 8 Schematic diagram of the structure of another communication device provided by an embodiment of the present application;

[0039] Figure 9 Another schematic diagram of the structure of another communication device provided by an embodiment of the present application. Detailed implementation manners

[0040] In order to make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the embodiments of the present application will be further described in detail below with reference to the accompanying drawings.

[0041] The technical solutions of the embodiments of this application can be applied to various communication systems, such as: Global System for Mobile Communications (GSM) system, Code Division Multiple Access (CDMA) system, Wideband Code Division Multiple Access (WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, LTE Frequency Division Duplex (FDD) system, LTE Time Division Duplex (TDD), Universal Mobile Telecommunication System (UMTS), Worldwide Interoperability for Microwave Access (WIMAX) communication system, 5th generation (5G) system or New Radio (NR), or applied to future communication systems or other similar communication systems, etc.

[0042] Please refer to Figure 1 , which is a schematic diagram of the network architecture of a communication system applicable to the embodiments of this application. The communication system includes a network device 110, terminal devices 101, 102, 103, 104, 105, and 106. The network device can communicate with at least one terminal device (such as terminal device 101) through the uplink (UL) and downlink (DL).

[0043] Figure 1 The network device in [[ ]] can be an access network device, such as a base station. Among them, the access network device corresponds to different devices in different systems. For example, in the 4th generation (4G) mobile communication technology system, it can correspond to an eNB, and in the 5G system, it corresponds to the access network device in 5G, such as a gNB. However, the technical solutions provided by the embodiments of this application can also be applied to future mobile communication systems. Therefore th the network device in [[ ]] can also correspond to the access network device in future mobile communication systems. Figure 1

[0044] It should be understood that there may also be multiple network devices in the communication system, and each network device can provide services for multiple terminal devices. The embodiments of the present application do not limit the number of network devices and terminal devices in the communication system. Figure 1 Each of the network devices in Figure 1 , and some or all of the terminal devices among the multiple terminal devices can implement the technical solutions provided by the embodiments of the present application. In addition, Figure 1 the terminal devices in Figure 1 can be terminal devices of different types. For example, they may include mMTC terminal devices such as mobile phones, smart water meters, and electricity meters in the Internet of Things. Figure 1 The various types of terminal devices shown in Figure 1 are only some of the examples. It should also be understood that the terminal devices in the embodiments of the present application are not limited thereto.

[0045] Hereinafter, some terms in the embodiments of the present application will be explained to facilitate the understanding of those skilled in the art.

[0046] 1) A terminal device, also known as a user equipment (UE), a mobile station (MS), a mobile terminal (MT), etc., is a device that provides voice and / or data connectivity to a user. The terminal device can communicate with the core network via a radio access network (RAN) and exchange voice and / or data with the RAN. For example, the terminal device can be a handheld device, a vehicle-mounted device, a vehicle user equipment, etc. with wireless connection capabilities. Currently, some examples of terminal devices are: mobile phones, tablet computers, laptop computers, palm computers, mobile internet devices (MIDs), wearable devices, virtual reality (VR) devices, augmented reality (AR) devices, wireless terminals in industrial control, wireless terminals in self-driving, wireless terminals in remote medical surgery, wireless terminals in smart grids, wireless terminals in transportation safety, wireless terminals in smart cities, wireless terminals in smart homes, etc.

[0047] By way of example and not limitation, in the embodiments of the present application, the terminal device may also be a wearable device. A wearable device may also be referred to as a wearable intelligent device or a smart wearable device, etc. It is a general term for devices developed by applying wearable technology to the intelligent design of daily wear, such as glasses, gloves, watches, clothing, and shoes. A wearable device is a portable device that is directly worn on the body or integrated into the user's clothes or accessories. A wearable device is not just a hardware device, but also realizes powerful functions through software support, data interaction, and cloud interaction. Broadly speaking, wearable intelligent devices include those with complete functions and large sizes that can achieve complete or partial functions without relying on a smart phone, such as smart watches or smart glasses, etc., and those that only focus on a certain type of application function and need to cooperate with other devices such as smart phones, such as various smart bracelets for physical sign monitoring, smart helmets, and smart jewelry.

[0048] In the embodiments of the present application, the terminal device may also be an in-vehicle module, in-vehicle module group, in-vehicle component, in-vehicle chip, or in-vehicle unit built into a vehicle as one or more components or units. The vehicle can implement the method of the present application through the built-in in-vehicle module, in-vehicle module group, in-vehicle component, in-vehicle chip, or in-vehicle unit.

[0049] 2) A network device is a device in a network used to connect terminal devices to a wireless network. The network device can be a node in a radio access network, also known as a base station, or also known as a radio access network (RAN) node (or device). The network device can be used to mutually convert received airframes and Internet Protocol (IP) packets, acting as a router between the terminal device and the rest of the access network, where the rest of the access network may include an IP network. The network device can also coordinate the attribute management of the air interface. For example, the network device can include an evolved Node B (NodeB or eNB or e-NodeB, evolutional Node B) in a Long-Term Evolution (LTE) system or an evolved LTE system (LTE-Advanced, LTE-A), such as a traditional macro eNB and a micro eNB in a heterogeneous network scenario, or can also include a next-generation Node B (gNB) in a 5th generation (5G) New Radio (NR) system, or can also include a transmission reception point (TRP), a home base station (e.g., home evolved NodeB, or home Node B, HNB), a baseband unit (BBU), a BBU pool, or a WiFi access point (AP), etc., or can also include a centralized unit (CU) and a distributed unit (DU) in a Cloud Radio Access Network (CloudRAN) system. The embodiments of the present application do not limit this. For another example, a network device in a V2X technology is a roadside unit (RSU). The RSU can be a fixed infrastructure entity that supports V2X applications and can exchange messages with other entities that support V2X applications.

[0050] 3) The downlink control channel, such as the PDCCH, or the enhanced physical downlink control channel (EPDCCH), or may also include other downlink control channels. There is no specific limitation.

[0051] 4) The terms "system" and "network" in the embodiments of the present application may be used interchangeably. "Multiple" means two or more than two. In view of this, in the embodiments of the present application, "multiple" may also be understood as "at least two". "At least one" may be understood as one or more, for example, understood as one, two or more. For example, including at least one means including one, two or more, and does not limit which ones are included. For example, including at least one of A, B, and C, then what is included may be A, B, C, A and B, A and C, B and C, or A, B, and C. Similarly, the understanding of descriptions such as "at least one kind" is similar. "And / or" describes the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / ", unless otherwise specified, generally represents an "or" relationship between the front and back associated objects.

[0052] Unless otherwise stated, the ordinal numbers such as "first" and "second" mentioned in the embodiments of the present application are used to distinguish multiple objects, and are not used to limit the order, time sequence, priority or importance of multiple objects, and the descriptions of "first" and "second" do not necessarily limit that the objects are different.

[0053] Please refer to Figure 2 , which is a schematic flow chart of a method for transmitting downlink control information (DCI) provided by the embodiments of the present application. The method specifically includes the following steps S201 to step S204.

[0054] Step S201: The network device sends first DCI format information to the first terminal device, and the first DCI format information is used to indicate the first DCI format.

[0055] The DCI format information described in the embodiments of the present application is used to indicate a DCI format. Figure 3 For a schematic diagram of a DCI format provided by the embodiments of the present application, as Figure 3 shown, a DCI may include multiple information blocks with the same length. Each information block contains energy-saving information of the corresponding terminal device. The last information block among the multiple information blocks stores a radio network temporary indication (RNTI) for scrambling the DCI. The RNTI can be used to indicate the PDCCH group where the terminal device is located, so that the terminal device can identify and receive the DCI. In a possible design, the RNTI may be, for example, a power saving (PS)-RNTI. The same length of the information blocks means that the number of bits of information that can be contained in each information block is the same.

[0056] It should be understood that the terminal devices corresponding to multiple information blocks in a DCI can be different. In this way, multiple terminal devices can reuse the same DCI to obtain energy-saving information, which helps to reduce the resource consumption on the network side and improve the efficiency of the energy-saving signal. Further, for each of the multiple information blocks, the terminal device corresponding to the information block can also be one or more. That is to say, multiple terminal devices can also reuse one information block in the DCI, indicating that these terminal devices have the same energy-saving information.

[0057] Step S202: The first terminal device receives the first DCI format information from the network device.

[0058] Step S203: The network device sends the first DCI to the first terminal device according to the first DCI format information.

[0059] The network device sending the first DCI to the first terminal device according to the first DCI format information can be that the network device sends the first DCI to the first terminal device in the first DCI format indicated by the first DCI format information. Since the first DCI sent by the network device adopts the first DCI format, in step S201, the network device needs to send the first DCI format information for indicating the first DCI format to the first terminal device so that the terminal device can obtain the energy-saving information according to the first DCI format. It can be understood that the network device sending the first DCI format information to the first terminal device can be before sending the first DCI.

[0060] Combined with Figure 3 the DCI format shown in, if the first DCI includes M information blocks, where M is a positive integer, then the first DCI format information can include information indicating the index of the information block corresponding to the first terminal device among the M information blocks, the length of the first DCI, and the length of each of the M information blocks.

[0061] It should be noted that the DCI can be a group DCI. Therefore, the network device sending the first DCI to the first terminal device according to the first DCI format information can also be that the network device can send the first DCI to a group of terminal devices, and the first terminal device is one of the group of terminal devices.

[0062] Step S204: The first terminal device receives the first DCI from the network device according to the first DCI format information.

[0063] After receiving the first DCI, the first terminal device can determine the information block corresponding to the first terminal device according to the length of the first DCI indicated in the indication information of the first DCI, the length of each information block in the first DCI, the number M of information blocks included in the first DCI, and the index of the information block corresponding to the first terminal device among the M information blocks, and then obtain the energy-saving information from this information block.

[0064] In the embodiments of the present application, the network device may further send information for indicating the first RNTI to the first terminal device. When sending the first DCI, the network device will scramble the first DCI with the first RNTI. The first RNTI corresponds to the first DCI format adopted by the first DCI, and can be used for the first terminal device to identify the PDCCH group it belongs to. That is to say, the first terminal device can detect the DCI according to the first RNTI, and judge whether a certain DCI contains the information block of its own energy-saving information according to whether the first RNTI can descramble the DCI. Optionally, the first RNTI may be a PS-RNTI.

[0065] The network device can specifically send the first DCI through the PDCCH channel. The time domain position where the network device sends the first DCI can be in the active period of DRX or in the inactive period of DRX. If the time domain position where the first DCI is sent is in the inactive period of DRX, then the network device can further send information for indicating the time advance amount of the time domain position of the first DCI relative to the next DRX active period to the first terminal device.

[0066] It should be noted that the network device can send one or more of the above information including the first DCI format information, the information for indicating the first RNTI, and the information for indicating the time advance amount of the time domain position of the first DCI relative to the next DRX active period to the first terminal device through the RRC message. These information can be sent to the first terminal device in the same RRC message or in different RRC messages. The present application does not limit this. For example, as shown in steps S401 to S406 in Figure 4 , before sending the first DCI, the network device can send an RRC message to the first terminal device, and this RRC message includes the first DCI format information, the information for indicating the first RNTI, and the information for indicating the time advance amount of the time domain position of the first DCI relative to the next DRX active period.

[0067] In an embodiment of the present application, the first DCI format information is included in the first DCI format set. The first DCI format set includes N DCI format information, and these N DCI format information are different from each other, respectively used to indicate different DCI formats, and respectively corresponding to the data transmission functions of N different terminal devices, where N is a positive integer. The first DCI format information refers to one of the N DCI format information.

[0068] Since the DCI format information is used to indicate the DCI format and the N DCI format information are different from each other, it means that the DCI formats indicated by these N DCI format information are different. Each DCI format can be used to support the data transmission function of a terminal device, and the data transmission functions supported by different DCI formats are different.

[0069] The difference in the DCI format may include one or more of the following: the length of the DCI, the length of each information block in the DCI, the type of energy-saving information included in each information block in the DCI, the RNTI used for scrambling the DCI, the supported data transmission function, etc. That is to say, if there is at least one difference between two DCI formats in terms of the length of the DCI, the length of each information block in the DCI, the type of energy-saving information included in each information block in the DCI, the RNTI used for scrambling the DCI, the supported data transmission function, etc., it can be considered that these two DCI formats are different DCI formats.

[0070] The data transmission functions mentioned in the embodiments of the present application may include one or more of the following:

[0071] Whether to wake up during the discontinuous reception (DRX) activation period, whether to configure channel state information (CSI) measurement and reporting before the DRX activation period, the bandwidth part (BWP) switching scheme, the configuration scheme of the number of receiving antennas during the DRX activation period, the cross-subframe scheduling scheme during the DRX activation period, and the physical downlink control channel skipping (PDCCH skipping) scheme during the DRX activation period.

[0072] Optionally, in some embodiments, other types of data transmission functions for power saving functions may be included.

[0073] The data transmission function of the terminal device can also be understood as a combination of power saving schemes adopted by the terminal device. Specifically, whether to wake up during the discontinuous reception (DRX) activation period can be understood as the wake-up function of the terminal device. Generally, wake up is a basic function of Wake-up Signal (WUS), and all types of terminals should support it. WUS is generally sent at a certain moment before the DRX activation period, that is, WUS is sent during the DRX inactive period, and is used to indicate whether the terminal device wakes up during the subsequent DRX activation period to monitor the Physical Downlink Control Channel (PDCCH) and other service behaviors. The wake-up function can be explicitly indicated by 1-bit information in the Downlink Control Information (DCI) to instruct the terminal device to activate the monitoring of PDCCH during the activation period or enter the sleep state. For example, when the value of this bit is "1", it indicates activating the monitoring of PDCCH, and when the value of the bit is "0", it indicates entering the sleep state.

[0074] Whether to configure the Channel State Information (CSI) measurement and reporting function before the DRX activation period can be understood as the CSI measurement and reporting of the terminal device. Since the terminal device will sleep for a long time before entering the activation period, the terminal device does not perform CSI measurement during the sleep period. The uses of CSI measurement include channel quality measurement, beam management, channel phase tracking, etc. For some terminal devices with position movement, after a long sleep state, there will be situations where the network device and the terminal device have inaccurate estimation of the current channel quality and beam mismatch. Therefore, when waking up, such terminal devices can be instructed to perform CSI measurement and reporting. It can be notified to the terminal device explicitly through 1-bit information in the DCI. The CSI measurement and reporting function is an optional configuration of the terminal device. The CSI measurement and reporting function can be configured for some terminal devices, and only the terminal devices with this function configured will have the indication information of this function in the DCI.

[0075] Bandwidth Part (BWP) switching, that is, the BWP switching function. BWP is the bandwidth resource for the terminal device to operate. Each terminal device can be configured with up to 4 BWPs, and only one BWP is activated at a time. The terminal device performs service transmission and Radio Resource Management (RRM) measurement on the activated BWP. Selecting an appropriate size of BWP according to the data to be transmitted is helpful for reducing power consumption. For different service models, the arrival time and size of data packets are different. Therefore, for a certain activation moment, the amount of data to be transmitted currently is different. Therefore, when instructing the terminal device to wake up, the currently activated BWP can be adjusted simultaneously to perform BWP switching. This function is more effective for bursty service models. It can be indicated by 2-bit information in the DCI to switch among the 4 configured BWPs. For terminal devices with relatively stable service arrival periods, the BWP switching function may not be included. The BWP switching function is an optional configuration of the terminal device.

[0076] Figure 5Exemplarily shown are multiple DCI format information in the first DCI format set provided by the embodiments of the present application, such as Figure 5 As shown, the first DCI format set includes 4 DCI format information. The data transmission functions supported by DCI format 1 include wake-up, the data transmission functions supported by DCI format 2 include wake-up and CSI measurement and reporting, the data transmission functions supported by DCI format 3 include wake-up and BWP switching, and the data transmission functions supported by DCI format 4 include wake-up, BWP switching, and CSI measurement and reporting. It should be understood that Figure 5 The number of DCI format information shown in Figure 5 is only an example. The present application does not specifically limit the number of DCI format information in the first DCI format set, and it can be set by those skilled in the art according to actual needs.

[0077] Figure 5 The 4 DCI formats shown in Figure 5 have different DCI lengths, that is Figure 5 L shown in Figure 5 max1 、L max2、 L max3 and L max4 . And the lengths of the information blocks in different DCI formats are also different. Generally speaking, the more power saving schemes included in the data transmission function, the larger the length of the information block. In addition, the 4 DCI formats can also be scrambled respectively using dedicated RNTIs corresponding to the DCI formats.

[0078] It should be noted that the lengths of the DCIs indicated by the N DCI format information in the first DCI format set can be the same, or the DCI lengths indicated by each DCI format information can also be configured separately, and the configured DCI lengths can be the same or different. Since the lengths of the information blocks in different DCI formats are different, if the lengths of the DCIs of the N DCI formats are the same, it means that the number of terminal devices that can be accommodated in different DCIs is different. The smaller the length of the information block, the more terminal devices can be multiplexed. However, it should also be understood that the present application does not limit that the lengths of the information blocks in different DCI formats must be different. In scenarios where their supported data transmission functions are different, the lengths of the information blocks in different DCI formats may also be the same.

[0079] For example, in combination with Figure 3For the DCI formats shown, it is assumed that the DCI lengths of the 4 DCI formats are all 24 bits. If there are 50 terminal devices, namely terminal device 0 to terminal device 49, they are divided into four groups according to the service and power characteristics of the terminal devices. Among them, the first group uses DCI format 1, including terminal devices 0 to 23, and the PS-RNTI (power saving - RNTI) is configured as OXAAAA; the second group uses DCI format 2, including terminal devices 24 to 35, and the PS-RNTI is configured as OXBBBB; the third group uses DCI format 3, including terminal devices 36 to 43, and the PS-RNTI is configured as OXCCCC; the fourth group uses DCI format 4, including terminal devices 44 to 49, and the PS-RNTI is configured as OXDDDD.

[0080] Table 1 Grouping of Terminal Devices and DCI Formats Used

[0081]

[0082] The DCI formats used by the four terminal device groups can be as shown in Table 1. Taking the group of UE0 to UE23 as an example, the network device can configure UE0 to UE23 respectively through RRC signaling:

[0083] DCI pattern: pattern1 - wake up;

[0084] Block index: The value range is [0, 23];

[0085] DCI length: 24 bit;

[0086] PS-RANTI: OXAAAA;

[0087] The network device indicates whether the corresponding terminal device wakes up in the corresponding block index in the DCI according to the high-layer configuration, and scrambles the CRC check bits of the DCI with PS-RANTI OXAAAA. The terminal device monitors the PDCCH scrambled with PS-RNTIOXAAAA. If the PDCCH of this terminal device group is successfully detected, it reads the wake-up indication according to the configuration in the block index. If the indication is to wake up, it wakes up during the subsequent DRX active period and monitors the PDCCH; if the indication is not to wake up, it does not wake up during the subsequent DRX active period and continues to enter the DRX off state.

[0088] As can be seen from Table 1, when the lengths of all DCI formats are 24 bits, the minimum number of supported users is 24, 12, 8, and 6 respectively. The smaller the length of each information block of different DCI formats, the more users can be supported. By introducing different DCI formats for different data transmission functions, the usage efficiency of DCI is improved.

[0089] An embodiment of the present application provides a communication device. Please refer to Figure 6 , which is a schematic structural diagram of a communication device provided by an embodiment of the present application. The communication device 600 includes: a transceiver module 610 and a processing module 620. This communication device can be used to implement the functions of the network device involved in any of the above method embodiments. For example, this communication device can be a network device or a chip included in a network device.

[0090] When this communication device acts as a network device and executes Figure 3 the method embodiment shown in, the transceiver module 610 is used to send first DCI format information to a first terminal device. The first DCI format information is included in a first DCI format set. The first DCI format set includes N DCI format information, and the N DCI format information respectively corresponds to the data transmission functions of N different terminal devices, where N is a positive integer; the processing module 620 is used to send a first DCI to the first terminal device through the transceiver module 610 according to the first DCI format information.

[0091] In a possible design, the data transmission function includes one or more of the following:

[0092] Whether to wake up during the discontinuous reception (DRX) activation period, whether to configure the channel state information (CSI) measurement and reporting function before the DRX activation period, the bandwidth part (BWP) switching scheme, the configuration scheme of the number of receiving antennas during the DRX activation period, the cross-subframe scheduling scheme during the DRX activation period, and the physical downlink control channel skipping (PDCCH skipping) scheme during the DRX activation period.

[0093] In a possible design, the first DCI includes M information blocks, where M is a positive integer; the first DCI format information includes indication information for indicating one or more of the following: the index of the information block corresponding to the first terminal device among the M information blocks; or, the length of the first DCI; or, the length of the information block.

[0094] In a possible design, the transceiver module 610 is further used to send information for indicating a first radio network temporary identity (RNTI) to the first terminal device. The first RNTI is used for the first terminal device to receive the first DCI, and the first RNTI corresponds to the first DCI format information.

[0095] In a possible design, the time domain position where the transceiver module 610 sends the first DCI is in the inactive period of DRX. The transceiver module 610 is further configured to: send to a first terminal device information indicating the time advance of the time domain position of the first DCI relative to the next DRX active period.

[0096] In a possible design, the transceiver module 610 is further configured to send, via a radio resource control (RRC) message, one or more of the following information: the first DCI format information, the information indicating the first RNTI, and the information indicating the time advance of the time domain position of the first DCI relative to the next DRX active period.

[0097] It should be understood that the processing module 620 involved in this communication device may be implemented by a processor or processor-related circuit components, and the transceiver module 610 may be implemented by a transceiver or transceiver-related circuit components. The operations and / or functions of each module in this communication device are respectively for implementing Figure 3 or Figure 4 the corresponding processes of the methods shown in

[0098] Please refer to Figure 7 , which is another structural schematic diagram of a communication device provided in an embodiment of this application. This communication device may specifically be a network device, such as a base station, for implementing the functions of the network device involved in any of the above method embodiments.

[0099] This network device includes: one or more radio frequency units, such as a remote radio unit (RRU) 701 and one or more baseband units (BBUs) (which may also be referred to as digital units, DUs) 702. The RRU 701 may be referred to as a transceiver unit, transceiver, transceiver circuit, or transceiver, etc., and it may include at least one antenna 7011 and a radio frequency unit 7012. The RRU 701 part is mainly used for the transceiver of radio frequency signals and the conversion between radio frequency signals and baseband signals. The BBU 702 part is mainly used for baseband processing and controlling the base station, etc. The RRU 701 and the BBU 702 may be physically set together or physically separated, that is, a distributed base station.

[0100] The BBU 702 is the control center of the base station and may also be referred to as a processing unit, mainly used to complete baseband processing functions, such as channel coding, multiplexing, modulation, spreading, etc. For example, the BBU (processing unit) 702 may be used to control the base station to execute the operation processes of the network device in the above method embodiments.

[0101] In one example, the BBU 702 may be composed of one or more single boards. The multiple single boards may jointly support a radio access network with a single access indication (such as an LTE network), or may separately support radio access networks with different access systems (such as an LTE network, a 5G network, or other networks). The BBU 702 may further include a memory 7021 and a processor 7022. The memory 7021 is used to store necessary instructions and data. The processor 7022 is used to control the base station to perform necessary operations, for example, to control the base station to execute the sending operation in the above method embodiment. The memory 7021 and the processor 7022 may serve one or more single boards. That is to say, a memory and a processor may be separately provided on each single board. It is also possible that multiple single boards share the same memory and processor. In addition, necessary circuits may be provided on each single board.

[0102] The embodiment of the present application further provides another communication device. Please refer to Figure 8 , which is a schematic structural diagram of another communication device provided by the embodiment of the present application. The communication device 800 includes: a transceiver module 810 and a processing module 820. The communication device can be used to implement the functions of the terminal device involved in any of the above method embodiments. For example, the communication device may be a terminal device, such as a handheld terminal device or a vehicle-mounted terminal device; the communication device may also be a chip included in the terminal device, or a device including the terminal device, such as various types of vehicles, etc.

[0103] When the communication device is used as a terminal device and executes Figure 3 the method embodiment shown in, the transceiver module 810 is used to receive first DCI format information from a network device. The first DCI format information is included in a first DCI format set. The first DCI format set includes N DCI format information. The N DCI format information respectively corresponds to the data transmission functions of N different terminal devices. N is a positive integer; the processing module 820 is used to receive a first DCI from the network device according to the first DCI format information.

[0104] In a possible design, the data transmission function includes one or more of the following:

[0105] Whether to wake up during the discontinuous reception (DRX) activation period, whether to configure the channel state information (CSI) measurement and reporting function before the activation period, the bandwidth part (BWP) switching scheme, the configuration scheme of the number of receiving antennas during the DRX activation period, the cross-subframe scheduling scheme during the DRX activation period, and the physical downlink control channel skipping (PDCCH skipping) scheme during the DRX activation period.

[0106] In a possible design, the first DCI includes M information blocks, where M is a positive integer; the first DCI format information includes indication information for indicating one or more of the following: the index of the information block corresponding to the first terminal device among the M information blocks; or, the length of the first DCI; or, the length of the information block.

[0107] In a possible design, the transceiver module 810 is further configured to receive from a network device information for indicating a first radio network temporary identity (RNTI), where the first RNTI corresponds to the first DCI format information; and receive the first DCI according to the first RNTI.

[0108] In a possible design, the time domain position for receiving the first DCI is located in the inactive period of the DRX, and the transceiver module 810 is further configured to receive from the network device information for indicating the time advance of the time domain position of the first DCI relative to the next DRX activation period.

[0109] In a possible design, the transceiver module 810 is further configured to receive one or more of the following information through a radio resource control (RRC) message: the first DCI format information, the information for indicating the first RNTI, and the information for indicating the time advance of the time domain position of the first DCI relative to the next DRX activation period.

[0110] The processing module 820 involved in this communication device may be implemented by a processor or processor-related circuit components, and the transceiver module 810 may be implemented by a transceiver or transceiver-related circuit components. The operations and / or functions of each module in this communication device are respectively for implementing Figure 3 or Figure 4 the corresponding processes of the methods shown in, and for the sake of brevity, will not be elaborated here.

[0111] Please refer to Figure 9 , which is another schematic structural diagram of a communication device provided in an embodiment of this application. This communication device may specifically be a terminal device. For ease of understanding and convenient illustration, in Figure 9 , the terminal device takes a mobile phone as an example. As Figure 9As shown in the figure, the terminal device includes a processor, and may also include a memory. Of course, it may also include a radio frequency circuit, an antenna, an input / output device, etc. The processor is mainly used to process communication protocols and communication data, control the terminal device, execute software programs, process data of software programs, etc. The memory is mainly used to store software programs and data. The radio frequency circuit is mainly used for the conversion between baseband signals and radio frequency signals and the processing of radio frequency signals. The antenna is mainly used to transmit and receive radio frequency signals in the form of electromagnetic waves. The input / output device, such as a touch screen, a display screen, a keyboard, etc., is mainly used to receive data input by the user and output data to the user. It should be noted that some types of terminal devices may not have an input / output device.

[0112] When data needs to be sent, after the processor performs baseband processing on the data to be sent, it outputs a baseband signal to the radio frequency circuit. The radio frequency circuit performs radio frequency processing on the baseband signal and then sends the radio frequency signal out in the form of electromagnetic waves through the antenna. When data is sent to the terminal device, the radio frequency circuit receives the radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor. The processor converts the baseband signal into data and processes the data. For ease of explanation, Figure 9 only one memory and one processor are shown in the figure. In an actual terminal device product, there may be one or more processors and one or more memories. The memory may also be referred to as a storage medium or a storage device, etc. The memory may be set independently of the processor or integrated with the processor. The embodiments of the present application do not limit this.

[0113] In the embodiments of the present application, the antenna and the radio frequency circuit with transceiver functions can be regarded as the transceiver unit of the terminal device, and the processor with processing functions can be regarded as the processing unit of the terminal device. As Figure 9 shown in the figure, the terminal device includes a transceiver unit 910 and a processing unit 920. The transceiver unit may also be referred to as a transceiver, a transceiver machine, a transceiver device, etc. The processing unit may also be referred to as a processor, a processing board, a processing module, a processing device, etc. Optionally, the device in the transceiver unit 910 for implementing the receiving function can be regarded as the receiving unit, and the device in the transceiver unit 910 for implementing the sending function can be regarded as the sending unit, that is, the transceiver unit 910 includes a receiving unit and a sending unit. The transceiver unit is sometimes also referred to as a transceiver machine, a transceiver, or a transceiver circuit, etc. The receiving unit is sometimes also referred to as a receiver, a receiver, or a receiving circuit, etc. The sending unit is sometimes also referred to as a transmitter, a transmitter, or a transmitting circuit, etc. It should be understood that the transceiver unit 910 is used to perform the sending operation and receiving operation on the terminal device side in the above method embodiments, and the processing unit 920 is used to perform other operations on the terminal device except the transceiver operation in the above method embodiments.

[0114] The embodiments of the present application further provide a chip system, including: a processor, the processor is coupled to a memory, and the memory is used to store programs or instructions. When the programs or instructions are executed by the processor, the chip system implements the methods in any of the above method embodiments.

[0115] Optionally, the processor in the chip system can be one or more. The processor can be implemented by hardware or by software. When implemented by hardware, the processor can be a logic circuit, an integrated circuit, etc. When implemented by software, the processor can be a general-purpose processor that implements by reading software code stored in the memory.

[0116] Optionally, the memory in the chip system can also be one or more. The memory can be integrated with the processor or can be separately arranged from the processor, which is not limited in the present application. Exemplarily, the memory can be a non-transitory processor, such as a read-only memory ROM, which can be integrated with the processor on the same chip or can be separately arranged on different chips. The present application does not specifically limit the type of the memory and the arrangement manner of the memory and the processor.

[0117] Exemplarily, the chip system can be a field programmable gate array (FPGA), can be an application specific integrated circuit (ASIC), can also be a system on chip (SoC), can also be a central processing unit (CPU), can also be a network processor (NP), can also be a digital signal processing circuit (DSP), can also be a micro controller unit (MCU), can also be a programmable logic device (PLD) or other integrated chips.

[0118] It should be understood that the steps in the above method embodiments can be completed by the integrated logic circuit in the hardware of the processor or by instructions in software form. The method steps disclosed in combination with the embodiments of the present application can be directly embodied as being executed and completed by the hardware processor, or can be executed and completed by a combination of the hardware and software modules in the processor.

[0119] The embodiments of the present application further provide a computer-readable storage medium, in which computer-readable instructions are stored. When a computer reads and executes the computer-readable instructions, the computer is caused to execute the method in any of the above method embodiments.

[0120] The embodiments of the present application further provide a computer program product. When a computer reads and executes the computer program product, the computer is caused to execute the method in any of the above method embodiments.

[0121] The embodiments of the present application further provide a communication system, which includes a network device and at least one terminal device described in any of the above method embodiments.

[0122] It should be understood that the processor mentioned in the embodiments of the present application may be a central processing unit (CPU), or may also be other general-purpose processors, digital signal processors (DSPs), application specific integrated circuits (ASICs), field programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc.

[0123] It should also be understood that the memory mentioned in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memories. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable ROM (PROM), an erasable programmable ROM (EPROM), an electrically erasable programmable ROM (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM), which is used as an external cache. By way of example but not limitation, many forms of RAM are available, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchlink DRAM (SLDRAM), and direct rambus RAM (DR RAM).

[0124] It should be noted that when the processor is a general-purpose processor, DSP, ASIC, FPGA, or other programmable logic device, discrete gate or transistor logic device, or discrete hardware component, the memory (storage module) is integrated in the processor.

[0125] It should be noted that the memory described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0126] It should be understood that in various embodiments of the present application, the magnitudes of the sequence numbers of the above processes do not mean the order of execution. The order of execution of each process should be determined by its function and internal logic, and should not constitute any limitation to the implementation process of the embodiments of the present invention.

[0127] Those of ordinary skill in the art can realize that the units and algorithm steps of each example described in combination with the embodiments disclosed herein can be implemented by electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are executed in a hardware or software manner depends on the specific application and design constraints of the technical solution. Professional technicians can use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of this application.

[0128] Those skilled in the art can clearly understand that for the convenience and brevity of description, the specific working processes of the systems, devices, and units described above can refer to the corresponding processes in the foregoing method embodiments, and will not be elaborated herein.

[0129] In several embodiments provided in this application, it should be understood that the disclosed systems, devices, and methods can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the units is only a logical function division. In actual implementation, there can be other division methods. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the displayed or discussed couplings or direct couplings or communication connections to each other can be through some interfaces. The indirect couplings or communication connections of the devices or units can be in electrical, mechanical, or other forms.

[0130] The units described as separate components may or may not be physically separated. The components displayed as units may or may not be physical units, that is, they can be located in one place, or can be distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0131] In addition, the functional units in each embodiment of this application can be integrated in a processing unit, or each unit can exist physically alone, or two or more units can be integrated in one unit.

[0132] When the above-mentioned functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art or a part of this technical solution can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in various embodiments of this application. The aforementioned storage medium includes: various media that can store program codes such as USB flash drives, mobile hard disks, read-only memories (ROMs), random access memories (RAMs), magnetic disks, or optical discs.

[0133] As described above, the above are only specific implementation manners of this application, but the protection scope of this application is not limited thereto. Any person skilled in the art within the technical scope disclosed by this application can easily think of changes or substitutions, which should all be covered within the protection scope of this application. Therefore, the protection scope of this application should be subject to the protection scope of the claims.

Claims

1. A method for transmitting downlink control information DCI, characterized in that: The method comprises: The network device sends first DCI format information to the first terminal device, where the first DCI format information is included in a first DCI format set, where the first DCI format set includes N DCI format information, where the N DCI format information respectively correspond to data transmission functions of N different terminal devices, where the data transmission function of the terminal device is a combination of power saving schemes adopted by the terminal device, and N is a positive integer; The network device sends a first DCI to the first terminal device according to the first DCI format information.

2. The method according to claim 1, characterized in that The data transmission function includes one or more of the following: Whether to wake up during the discontinuous reception DRX activation period, whether to configure the channel state information CSI measurement and reporting function before the DRX activation period, the bandwidth part BWP switching plan, the configuration plan of the number of receiving antennas during the DRX activation period, the cross-subframe scheduling plan during the DRX activation period, and the physical downlink control channel skipping PDCCH skipping plan during the DRX activation period.

3. The method according to claim 1, characterized in that The first DCI includes M information blocks, where M is a positive integer; and the first DCI format information includes indication information for indicating one or more of the following: An index of the information block corresponding to the first terminal device in the M information blocks; or The length of the first DCI; or The length of the information block.

4. The method according to any one of claims 1 to 3, characterized in that The method further comprises: The network device sends information indicating a first wireless network temporary identifier RNTI to the first terminal device. The first RNTI is used by the first terminal device to receive the first DCI. The first RNTI corresponds to the first DCI format information.

5. The method according to any one of claims 1 to 3, characterized in that The time domain position where the network device sends the first DCI is in a DRX inactive period, and the method further includes: The network device sends to the first terminal device information indicating a time advance of a time domain position of the first DCI relative to a next DRX activation period.

6. The method according to any one of claims 1 to 3, characterized in that The method further comprises: The network device sends one or more of the following information via a radio resource control RRC message: The first DCI format information, information used to indicate the first RNTI, and information used to indicate the time advance of the time domain position of the first DCI relative to the next DRX activation period.

7. A DCI transmission method, characterized in that: The method comprises: The first terminal device receives first DCI format information from the network device, where the first DCI format information is included in a first DCI format set, where the first DCI format set includes N DCI format information, where the N DCI format information respectively correspond to data transmission functions of N different terminal devices, where the data transmission function of the terminal device is a combination of power saving schemes adopted by the terminal device, and N is a positive integer; The first terminal device receives a first DCI from the network device according to the first DCI format information.

8. The method according to claim 7, characterized in that The data transmission function includes one or more of the following: Whether to wake up during the discontinuous reception DRX activation period, whether to configure the channel state information CSI measurement and reporting function before the activation period, the bandwidth part BWP switching plan, the configuration plan of the number of receiving antennas during the DRX activation period, the cross-subframe scheduling plan during the DRX activation period, and the physical downlink control channel skipping PDCCH skipping plan during the DRX activation period.

9. The method according to claim 7, characterized in that: The first DCI includes M information blocks, where M is a positive integer; and the first DCI format information includes indication information for indicating one or more of the following: An index of the information block corresponding to the first terminal device in the M information blocks; or The length of the first DCI; or The length of the information block.

10. The method according to any one of claims 7 to 9, characterized in that The method further comprises: The first terminal device receives information indicating a first wireless network temporary identifier RNTI from the network device, where the first RNTI corresponds to the first DCI format information; The first terminal device receives the first DCI according to the first RNTI.

11. The method according to any one of claims 7 to 9, characterized in that The time domain position at which the first terminal device receives the first DCI is in a DRX inactive period, and the method further includes: The first terminal device receives information from the network device for indicating a time advance of a time domain position of the first DCI relative to a next DRX activation period.

12. The method according to any one of claims 7 to 9, characterized in that The method further comprises: The first terminal device receives one or more of the following information via a radio resource control RRC message: The first DCI format information, information used to indicate the first RNTI, and information used to indicate the time advance of the time domain position of the first DCI relative to the next DRX activation period.

13. A communication device, characterized in that: The device comprises: A transceiver module, configured to send first DCI format information to a first terminal device, where the first DCI format information is included in a first DCI format set, where the first DCI format set includes N DCI format information, where the N DCI format information respectively correspond to data transmission functions of N different terminal devices, where the data transmission function of the terminal device is a combination of power saving schemes adopted by the terminal device, and where N is a positive integer; A processing module is used to send the first DCI to the first terminal device through the transceiver module according to the first DCI format information.

14. The device according to claim 13, characterized in that The data transmission function includes one or more of the following: Whether to wake up during the discontinuous reception DRX activation period, whether to configure the channel state information CSI measurement and reporting function before the DRX activation period, the bandwidth part BWP switching plan, the configuration plan of the number of receiving antennas during the DRX activation period, the cross-subframe scheduling plan during the DRX activation period, and the physical downlink control channel skipping PDCCH skipping plan during the DRX activation period.

15. The device according to claim 13, characterized in that The first DCI includes M information blocks, where M is a positive integer; and the first DCI format information includes indication information for indicating one or more of the following: An index of the information block corresponding to the first terminal device in the M information blocks; or The length of the first DCI; or The length of the information block.

16. The device according to any one of claims 13 to 15, characterized in that The transceiver module is also used for: Information indicating a first wireless network temporary identifier RNTI is sent to the first terminal device, where the first RNTI is used by the first terminal device to receive the first DCI, and the first RNTI corresponds to the first DCI format information.

17. The device according to any one of claims 13 to 15, characterized in that The time domain position at which the transceiver module sends the first DCI is in the DRX inactive period, and the transceiver module is further used for: Send information to the first terminal device to indicate the time advance of the time domain position of the first DCI relative to the next DRX activation period.

18. The device according to any one of claims 13 to 15, characterized in that The transceiver module is also used to send one or more of the following information via a radio resource control RRC message: The first DCI format information, information used to indicate the first RNTI, and information used to indicate the time advance of the time domain position of the first DCI relative to the next DRX activation period.

19. A communication device, characterized in that: The device comprises: A transceiver module, configured to receive first DCI format information from a network device, where the first DCI format information is included in a first DCI format set, where the first DCI format set includes N DCI format information, where the N DCI format information respectively correspond to data transmission functions of N different terminal devices, where the data transmission function of the terminal device is a combination of power saving schemes adopted by the terminal device, and where N is a positive integer; A processing module is used to receive a first DCI from the network device according to the first DCI format information.

20. The device according to claim 19, characterized in that The data transmission function includes one or more of the following: Whether to wake up during the discontinuous reception DRX activation period, whether to configure the channel state information CSI measurement and reporting function before the activation period, the bandwidth part BWP switching plan, the configuration plan of the number of receiving antennas during the DRX activation period, the cross-subframe scheduling plan during the DRX activation period, and the physical downlink control channel skipping PDCCH skipping plan during the DRX activation period.

21. The device according to claim 19, characterized in that The first DCI includes M information blocks, where M is a positive integer; and the first DCI format information includes indication information for indicating one or more of the following: An index of the information block corresponding to the first terminal device in the M information blocks; or The length of the first DCI; or The length of the information block.

22. The device according to any one of claims 19 to 21, characterized in that The transceiver module is also used for: receiving information indicating a first radio network temporary identifier RNTI from the network device, where the first RNTI corresponds to the first DCI format information; The first DCI is received according to the first RNTI.

23. The device according to any one of claims 19 to 21, characterized in that The time domain position for receiving the first DCI is in the DRX inactive period, and the transceiver module is further used for: Information indicating a timing advance of a time domain position of the first DCI relative to a next DRX activation period is received from the network device.

24. The device according to any one of claims 19 to 21, characterized in that The transceiver module is further configured to receive one or more of the following information via a radio resource control RRC message: The first DCI format information, information used to indicate the first RNTI, and information used to indicate the time advance of the time domain position of the first DCI relative to the next DRX activation period.

25. A communication device, characterized in that: The apparatus comprises at least one processor coupled to at least one memory: The at least one processor is configured to execute a computer program or instruction stored in the at least one memory, so that the apparatus executes the method according to any one of claims 1 to 6, or the apparatus executes the method according to any one of claims 7 to 12.

26. A readable storage medium, characterized in that: Used to store instructions, when the instructions are executed, the method according to any one of claims 1 to 6 is implemented, or the method according to any one of claims 7 to 12 is implemented.

27. A communication device, characterized in that: including a processor and an interface circuit; The interface circuit is used to receive code instructions and transmit them to the processor; The processor is configured to execute the code instructions to perform the method according to any one of claims 1 to 6, or the processor is configured to execute the code instructions to perform the method according to any one of claims 7 to 12.

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