Downlink control information (DCI) transmission method and device

Abstract

A downlink control information (DCI) transmission method and apparatus, the method comprising: 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, the first DCI format set comprising N pieces of DCI format information, the N pieces of DCI format information respectively corresponding to data transmission functions of N different terminal devices. The first DCI set can comprise one or more pieces of DCI format information, and each piece of DCI format information corresponds to the data transmission function of one kind of terminal equipment, so that when the network equipment sends the first DCI, the network equipment can select an appropriate DCI format for sending according to the data transmission function supported by the terminal equipment, thereby effectively reducing the resource overhead in the DCI sending process, and improving the user experience. And the flexibility of energy-saving signal transmission is improved.

Description

[0001] This application is a divisional application. The application number of the original application is 201980098446.3, and the original application date is August 16, 2019. The entire content of the original application is incorporated into this application by reference. Technical Field

[0002] The present application relates to the field of wireless communication technology, and in particular to a method and apparatus for transmitting downlink control information (DCI). Background Art

[0003] To reduce power consumption in terminal devices, a wake-up signal (WUS) or power saving signal / channel may be introduced in the 5th generation (5G) new radio (NR) system. WUS can be combined with the discontinuous reception (DRX) mechanism in the radio resource control (RRC) connected state. For terminal devices that support WUS, the network device can send WUS during the terminal device's inactive time or outside of the active time during each DRX cycle.

[0004] For the design of WUS, one possible solution is to reuse the design of the physical downlink control channel (PDCCH) in the existing NR, that is, to design WUS as a downlink control channel, such as PDCCH, and the terminal device can determine whether to "wake up" by detecting the corresponding PDCCH. Taking into account the resource consumption on the network side, WUS can also be designed as a PDCCH for a group of terminal devices (UE group). The network equipment can configure a group of terminal devices to detect the same Group PDCCH, which carries the Group DCI to indicate the corresponding energy-saving information (such as whether to "wake up") for each terminal device in the group.

[0005] In the Internet of Things (IoT) scenario, there are different types of customized terminal devices, such as video surveillance cameras and industrial sensors. These different types of terminals have different business 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 them. In the prior art, the WUS can indicate multiple power saving functions, and the length of the group DCI sent by the network device to the mMTC type terminal devices is the same. If a certain type of terminal device is only configured with some power saving functions, there will be a lot of resource waste in the DCI. Summary of the Invention

[0006] The embodiments of the present application provide a method and apparatus for transmitting downlink control information (DCI), which is used to provide different DCI formats for different types of terminal devices, thereby enhancing the flexibility of energy-saving signal transmission and reducing resource loss.

[0007] In a first aspect, an embodiment of the present application provides a DCI transmission method, which can be applied to a network device, and the method includes: the network device sends first DCI format information to a first terminal device, and the first DCI format information is included in a first DCI format set, and the first DCI format set includes N DCI format information, and the N DCI format information respectively correspond to the data transmission functions of N different terminal devices, and N is a positive integer; the network device sends the first DCI to the first terminal device according to the first DCI format information.

[0008] Using the technical solution provided in this application, a network device can send a first DCI to a first terminal device based on the first DCI format information in the first DCI format set. Because the first DCI set may include one or more DCI format information, each DCI format information corresponds to a data transmission function of a terminal device. Therefore, when sending the first DCI, the network device can select an appropriate DCI format based on the data transmission function supported by the terminal device, thereby effectively reducing resource overhead during the DCI transmission process and improving the flexibility of energy-saving signal transmission.

[0009] 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.

[0010] In conjunction with the first aspect, in one 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: an index of the information block corresponding to the first terminal device within 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 based on the content indicated in the first DCI format information, thereby obtaining energy-saving information.

[0011] In conjunction with the first aspect, in one possible design of the first aspect, the network device may further send information indicating a first radio network temporary identifier (RNTI) to the first terminal device. 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. That is, different DCI formats may correspond to different RNTIs.

[0012] In combination with the first aspect, in a possible design of the first aspect, the time domain position of the network device sending the first DCI is located in the non-activation period of the DRX, and the network device may also 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.

[0013] In conjunction with the first aspect, in one 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: first DCI format information, information indicating the first RNTI, and information indicating a timing advance of a time domain position of the first DCI relative to a next DRX activation period. This facilitates the terminal device to receive the first DCI.

[0014] In the second aspect, an embodiment of the present application provides a DCI transmission method, which can be applied to a terminal device, and the method includes: a first terminal device receives first DCI format information from a network device, and the first DCI format information is included in a first DCI format set, and 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, 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.

[0015] Using the technical solution provided in this application, a first terminal device can receive a first DCI sent by a network device based on first DCI format information in a first DCI format set. Because the first DCI set may include one or more DCI format information, each DCI format information corresponds to a data transmission function of a terminal device. Therefore, when sending the first DCI, the network device can select an appropriate DCI format for transmission based on the data transmission function supported by the terminal device, thereby effectively reducing resource overhead during the DCI transmission process and improving the flexibility of energy-saving signal transmission.

[0016] 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 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.

[0017] In conjunction with the second aspect, in one possible design of the second 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: an index of the information block corresponding to the first terminal device within 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 based on the content indicated in the first DCI format information, thereby obtaining energy-saving information.

[0018] In combination with the second aspect, in a possible design of the second aspect, the first terminal device can also receive information indicating a first wireless network temporary identifier RNTI from a 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 based on the first RNTI.

[0019] In combination with the second aspect, in a possible design of the second aspect, the time domain position at which the first terminal device receives the first DCI is in the non-activation period of DRX, and the first terminal device may also receive information from the network device to indicate the time advance of the time domain position of the first DCI relative to the next DRX activation period.

[0020] In conjunction with the second aspect, in a possible design of the second aspect, the first terminal device may further receive one or more of the following information through a radio resource control (RRC) message: first DCI format information, information indicating the first RNTI, and information indicating a timing advance of a time domain position of the first DCI relative to a next DRX activation period. This facilitates the terminal device to receive the first DCI.

[0021] In a third aspect, embodiments of the present application provide a communication device capable of implementing the functions of a terminal device in the first aspect or any possible design of the first aspect. The communication device may be a terminal device, such as a handheld terminal device, an in-vehicle terminal device, or the like, or may be a device included in the terminal device, such as a chip, or may be a device including the terminal device. The functions of the terminal device may be implemented through hardware or through hardware executing corresponding software, wherein the hardware or software includes one or more modules corresponding to the functions.

[0022] The communication device may also have the functionality of a network device implementing the 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 network device may be implemented through hardware or through hardware executing corresponding software, wherein the hardware or software includes one or more modules corresponding to the functions.

[0023] In one possible design, the structure of the communication device includes a processing module and a transceiver module, wherein the processing module is configured to support the communication device to perform the corresponding functions in the above-mentioned first aspect or any one of the designs of the first aspect, or to perform the corresponding functions in the above-mentioned second aspect or any one of the designs of the second aspect. The transceiver module is used to support communication between the communication device and other communication devices. For example, when the communication device is a network device, it can send first DCI format information to the first terminal device. The communication device may also include a storage module, which is coupled to the processing module and stores program instructions and data necessary for 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 may be set separately from the processor, which is not limited in this application.

[0024] In another possible design, the communication device includes a processor and may also include a memory. The processor is coupled to the memory and can be used to execute computer program instructions stored in the memory to cause the communication device to perform the method of the first aspect or any possible design of the first aspect, or to perform the method of the second aspect or any possible design of the second aspect. Optionally, the communication device also includes a communication interface, and the processor is coupled to the communication interface. When the communication device is a terminal device, the communication interface can be a transceiver or an input / output interface; when the communication device is a chip included in the terminal device, the communication interface can be the input / output interface of the chip. Optionally, the transceiver can be a transceiver circuit, and the input / output interface can be an input / output circuit.

[0025] In a fourth aspect, an embodiment of the present application provides a chip system, comprising: a processor, the processor being coupled to a memory, the memory being used to store programs or instructions, and when the programs or instructions are executed by the processor, the chip system implements any possible design method of the first aspect above, or implements any possible design method of the second aspect above.

[0026] Optionally, the chip system further includes an interface circuit configured to receive code instructions and transmit the code instructions to the processor.

[0027] Optionally, there may be one or more processors in the chip system. The processor may be implemented in hardware or software. When implemented in hardware, the processor may be a logic circuit, an integrated circuit, etc. When implemented in software, the processor may be a general-purpose processor implemented by reading software code stored in a memory.

[0028] Optionally, the memory in the chip system may be one or more memories. The memory may be integrated with the processor or may be provided separately from the processor, which is not limited in this application. For example, the memory may be a non-transient processor, such as a read-only memory (ROM), which may be integrated with the processor on the same chip or provided on different chips. This application does not specifically limit the type of memory or the configuration of the memory and the processor.

[0029] In a 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 a method in any possible design of the first aspect or a method in any possible design of the second aspect.

[0030] In a 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 a method in any possible design of the first aspect or executes a method in any possible design of the second aspect.

[0031] In a seventh aspect, an embodiment of the present application provides a communication system, which includes the network device described in the above aspects and at least one terminal device. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 A schematic diagram of a network architecture of a communication system applicable to embodiments of the present application;

[0033] Figure 2 A schematic diagram of a flow chart of a DCI transmission method provided in an embodiment of the present application;

[0034] Figure 3 A schematic diagram of a DCI format provided in an embodiment of the present application;

[0035] Figure 4 Another schematic diagram of a flow chart of a DCI transmission method provided in an embodiment of the present application;

[0036] Figure 5 A schematic diagram of multiple DCI formats in the first DCI format set provided in an embodiment of the present application;

[0037] Figure 6 A schematic diagram of the structure of a communication device provided in an embodiment of the present application;

[0038] Figure 7 Another structural diagram of a communication device provided in an embodiment of the present application;

[0039] Figure 8 A schematic structural diagram of another communication device provided in an embodiment of the present application;

[0040] Figure 9 Another structural diagram of another communication device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0041] In order to make the purpose, 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.

[0042] The technical solutions of the embodiments of the present 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), world-wide interoperability for microwave access (WIMAX) communication system, fifth generation (5G) system or new radio (NR), or applied to future communication systems or other similar communication systems.

[0043] Please refer to Figure 1 , which is a schematic diagram of a network architecture of a communication system applicable to an embodiment of the present application. The communication system includes a network device 110, a terminal device 101, a terminal device 102, a terminal device 103, a terminal device 104, a terminal device 105, and a terminal device 106. The network device can communicate with at least one terminal device (such as terminal device 101) via an uplink (UL) and a downlink (DL).

[0044] Figure 1 The network device in the system may be an access network device, such as a base station. The access network device corresponds to different devices in different systems, such as in the fourth generation mobile communication technology (the 4 th In the 4G generation system, it can correspond to eNB, and in the 5G system, it can correspond to the access network equipment in 5G, such as gNB. However, the technical solution provided by the embodiment of the present application can also be applied to future mobile communication systems, so Figure 1 The network equipment in the figure can also correspond to the access network equipment in the future mobile communication system.

[0045] It should be understood that there may 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 The network devices in the embodiment of the present application can implement the technical solutions provided by the embodiments of the present application. Figure 1 The terminal devices in the example may be different types of terminal devices, for example, mobile phones, smart water meters, electric meters and other mMTC terminal devices in the Internet of Things. Figure 1 The various types of terminal devices shown in are only some examples, and it should be understood that the terminal devices in the embodiments of the present application are not limited thereto.

[0046] Below, some terms used in the embodiments of the present application are explained to facilitate understanding by those skilled in the art.

[0047] 1) Terminal equipment, also known as user equipment (UE), mobile station (MS), or mobile terminal (MT), provides voice and / or data connectivity to users. The terminal equipment can communicate with the core network via the radio access network (RAN), exchanging voice and / or data with the RAN. For example, the terminal equipment can be a handheld device with wireless connectivity, an in-vehicle device, or a vehicle user equipment. Currently, some examples of terminal devices are: mobile phones, tablet computers, laptops, PDAs, 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.

[0048] As an example and not a limitation, in the embodiments of the present application, the terminal device may also be a wearable device. Wearable devices may also be referred to as wearable smart devices or smart wearable devices, etc., which are a general term for wearable devices that are intelligently designed and developed using wearable technology for daily wear, such as glasses, gloves, watches, clothing, and shoes. A wearable device is a portable device that is worn directly on the body or integrated into the user's clothes or accessories. Wearable devices are not only hardware devices, but also achieve powerful functions through software support, data interaction, and cloud interaction. Broadly speaking, wearable smart devices include those that are fully functional, large in size, and can achieve complete or partial functions without relying on smartphones, such as smart watches or smart glasses, etc., as well as those that only focus on a certain type of application function and need to be used in conjunction with other devices such as smartphones, such as various smart bracelets, smart helmets, and smart jewelry for vital sign monitoring.

[0049] The terminal device in the embodiment of the present application can also be a vehicle-mounted module, vehicle-mounted module, vehicle-mounted component, vehicle-mounted chip or vehicle-mounted unit that is built into the vehicle as one or more components or units. The vehicle can implement the method of the present application through the built-in vehicle-mounted module, vehicle-mounted module, vehicle-mounted component, vehicle-mounted chip or vehicle-mounted unit.

[0050] 2) Network equipment: This is a device used to connect terminal devices to a wireless network. This network equipment can be a node in a radio access network, also known as a base station or a radio access network (RAN) node (or device). This network equipment can convert received air frames to and from Internet Protocol (IP) packets, acting as a router between the terminal device and the rest of the access network, which may include an IP network. The network equipment can also coordinate the management of air interface attributes. For example, the network device may include an evolved base station (NodeB or eNB or e-NodeB, evolutionary Node B) in a long-term evolution (LTE) system or an evolved LTE system (LTE-Advanced, LTE-A), such as a traditional macro base station eNB and a micro base station eNB in ​​a heterogeneous network scenario, or may also include a next-generation node B (gNB) in a fifth-generation mobile communication technology (5th generation, 5G) new radio (NR) system, or may also include a transmission reception point (TRP), a home base station (for example, a home evolved NodeB, or a home Node B, HNB), a baseband unit (BBU), a baseband pool BBU pool, or a WiFi access point (AP), etc., or may also include a centralized unit (CU) and a distributed unit (DU) in a cloud radio access network (CloudRAN) system, which is not limited in the embodiments of the present application. 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.

[0051] 3) Downlink control channels, such as PDCCH, or enhanced physical downlink control channel (EPDCCH), or may also include other downlink control channels, without specific limitation.

[0052] 4) The terms "system" and "network" in the embodiments of the present application can be used interchangeably. "Multiple" means two or more. In view of this, "multiple" can also be understood as "at least two" in the embodiments of the present application. "At least one" can be understood as one or more, for example, one, two or more. For example, including at least one means including one, two or more, and there is no limit on which ones are included. For example, including at least one of A, B and C, then the included ones may be A, B, C, A and B, A and C, B and C, or A and B and C. Similarly, the understanding of descriptions such as "at least one" is similar. "And / or" describes the association relationship of associated objects, indicating that three relationships can exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / ", unless otherwise specified, generally indicates that the previous and subsequent associated objects are in an "or" relationship.

[0053] Unless otherwise specified, 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, timing, priority or importance of multiple objects, and the descriptions of "first" and "second" do not limit the objects to be different.

[0054] Please refer to Figure 2 , is a flow chart of a method for transmitting downlink control information DCI provided in an embodiment of the present application, the method specifically includes the following steps S201 to S204.

[0055] Step S201: The network device sends first DCI format information to the first terminal device, where the first DCI format information is used to indicate a first DCI format.

[0056] The DCI format information described in the embodiments of the present application is used to indicate a DCI format. Figure 3 A schematic diagram of a DCI format provided in an embodiment of the present application is shown as follows: Figure 3 As shown, a DCI may include multiple information blocks of the same length, each information block contains energy-saving information of the corresponding terminal device, and the last information block of 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 in which the terminal device is located, so that the terminal device can identify and receive the DCI. In one possible design, the RNTI can 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.

[0057] It should be understood that the terminal devices corresponding to the 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, thereby helping to reduce resource consumption on the network side and improve the efficiency of energy-saving signals. Furthermore, for each information block in the multiple information blocks, the terminal device corresponding to the information block can also be one or more. In other words, multiple terminal devices can also reuse an information block in the DCI, indicating that these terminal devices have the same energy-saving information.

[0058] Step S202: The first terminal device receives first DCI format information from the network device.

[0059] Step S203: The network device sends the first DCI to the first terminal device according to the first DCI format information.

[0060] 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 uses the first DCI format indicated by the first DCI format information to send the first DCI to the first terminal device. Since the first DCI sent by the network device uses the first DCI format, in step S201, the network device needs to send the first DCI format information indicating the first DCI format to the first terminal device so that the terminal device can obtain energy-saving information according to the first DCI format. It can be understood that the network device can send the first DCI format information to the first terminal device before sending the first DCI.

[0061] Combine Figure 3 It can be seen from the DCI format shown in that if the first DCI includes M information blocks, M is a positive integer, then the first DCI format information may include one or more information indicating the index of the information block corresponding to the first terminal device in the M information blocks, the length of the first DCI, and the length of each information block in the M information blocks.

[0062] It should be noted that the DCI may be a group DCI. Therefore, the network device sending the first DCI to the first terminal device according to the first DCI format information may also be that the network device may send the first DCI to a group of terminal devices, and the first terminal device is one of the group of terminal devices.

[0063] Step S204: The first terminal device receives the first DCI from the network device according to the first DCI format information.

[0064] After the first terminal device receives the first DCI, it can determine the information block corresponding to the first terminal device based on the length of the first DCI indicated in the first DCI indication information, 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 in the M information blocks, and then obtain energy-saving information from the information block.

[0065] In an embodiment of the present application, the network device may also send information indicating a first RNTI to the first terminal device. When sending the first DCI, the network device will use the first RNTI to scramble the first DCI. The first RNTI corresponds to the first DCI format used by the first DCI and can be used by the first terminal device to identify the PDCCH group to which it belongs. That is, the first terminal device can detect the DCI based on the first RNTI, and determine whether a certain DCI contains an information block containing its own energy-saving information based on whether the first RNTI can descramble the DCI. Optionally, the first RNTI can be a PS-RNTI.

[0066] The network device can specifically send the first DCI through the PDCCH channel. The time domain position of the network device sending the first DCI can be in the activation period of DRX or in the non-activation period of DRX. If the time domain position of sending the first DCI is in the non-activation period of DRX, the network device can further 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.

[0067] It should be noted that the network device may send one or more of the above information including 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 activation period to the first terminal device through an RRC message. This information may be sent to the first terminal device in the same RRC message or in different RRC messages, which is not limited in this application. For example, Figure 4 As shown in steps S401 to S406, before sending the first DCI, the network device may send an RRC message to the first terminal device, where the RRC message includes first DCI format information, information for indicating the first RNTI, and information for indicating the time advance of the time domain position of the first DCI relative to the next DRX activation period.

[0068] In an embodiment of the present application, the first DCI format information is included in a first DCI format set. The first DCI format set includes N DCI format information, each of which is different from the other and is used to indicate a different DCI format and corresponds to a data transmission function of N different terminal devices, where N is a positive integer. The first DCI format information refers to one DCI format information among the N DCI format information.

[0069] Since the DCI format information is used to indicate the DCI format, the N DCI format information are different from each other, indicating that the DCI formats indicated by the N DCI format information are different. Each DCI format can be used to support a data transmission function of a terminal device, and different DCI formats support different data transmission functions of terminal devices.

[0070] The difference in DCI formats 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, supported data transmission functions, etc. In other words, if two DCI formats differ in at least one 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, supported data transmission functions, etc., the two DCI formats may be considered to be different DCI formats.

[0071] The data transmission functions mentioned in the embodiments of the present application may include one or more of the following:

[0072] Whether to wake up during the DRX activation period, whether to configure channel state information (CSI) measurement and reporting before the DRX activation period, the bandwidth part (BWP) switching plan, the configuration plan for 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.

[0073] Optionally, other types of data transmission functions for power saving functions may be included in some embodiments.

[0074] 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. Usually wake up is the basic function of 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 non-activation period to indicate whether the terminal device wakes up during the subsequent DRX activation period to monitor PDCCH and other business behaviors. The wake-up function can explicitly indicate whether the terminal device activates monitoring of PDCCH during the activation period or enters the sleep state through 1-bit information in the DCI. For example, when the value of the bit is "1", it indicates activation of monitoring of PDCCH, and the value of the bit is "0", it indicates entering the sleep state.

[0075] Whether the channel state information CSI measurement and reporting function is configured 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 will not perform CSI measurement during the sleep period. The uses of CSI measurement include channel quality measurement, beam management, channel phase tracking, etc. For certain mobile terminal devices, after a long period of sleep, the network device and the terminal device may have inaccurate estimates of the current channel quality and beam mismatch. Therefore, when waking up, such terminal devices can be instructed to perform CSI measurement and reporting. The terminal device can be notified through a 1-bit information display in the DCI. The CSI measurement and reporting function is an optional configuration for the terminal device. The CSI measurement and reporting function can be configured for some terminal devices, and only terminal devices that have this function configured will have indication information of this function in the DCI.

[0076] BWP switching is the BWP switching function. BWP is the bandwidth resource for terminal devices. 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 RRM measurements on the activated BWP. Selecting a BWP of appropriate size based on the data to be transmitted can help reduce power consumption. For different service models, the arrival time and size of data packets are different. Therefore, for a certain activation moment, the current amount of data to be transmitted is different. Therefore, when instructing the terminal device to wake up, the currently activated BWP can be adjusted at the same time to perform BWP switching. This function is more effective for bursty service models. It can indicate switching among the 4 configured BWPs through 2 bits of information in the DCI. For terminal devices with relatively stable service cycles, the BWP switching function may not be included. The BWP switching function is an optional configuration for the terminal device.

[0077] Figure 5The example shows multiple DCI format information in the first DCI format set provided by the embodiment of the present application, such as Figure 5 As shown, the first DCI format set includes 4 DCI format information, wherein the data transmission function supported by DCI format 1 includes wake-up, the data transmission function supported by DCI format 2 includes wake-up and CSI measurement and reporting, the data transmission function supported by DCI format 3 includes wake-up and BWP switching, and the data transmission function supported by DCI format 4 includes wake-up, BWP switching, and CSI measurement and reporting. It should be understood that Figure 5 The number of DCI format information shown in is only an example. This 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.

[0078] Figure 5 The four DCI formats shown in have different DCI lengths, namely Figure 5 L shown in max1 、L max2、 L max3 and L max4 The information block lengths in different DCI formats also vary. Generally speaking, the more power-saving solutions included in the data transmission function, the larger the information block length. Furthermore, each of the four DCI formats can be scrambled using a dedicated RNTI corresponding to that DCI format.

[0079] It should be noted that the lengths of the DCI indicated by the N DCI format information in the first DCI format set may be the same, or the DCI length indicated by each DCI format information may be configured separately, and the configured DCI lengths may be the same or different. Since the lengths of the information blocks are different in different DCI formats, if the lengths of the DCIs in the N DCI formats are the same, it means that the number of terminal devices that can be accommodated in different DCIs is different, and the smaller the length of the information block, the more terminal devices that can be multiplexed. However, it should also be understood that this application does not limit the lengths of the information blocks of different DCI formats to be different. In scenarios where the data transmission functions they support are different, the lengths of the information blocks in different DCI formats may also be the same.

[0080] For example, combining Figure 3Assume that the DCI length of each of the four DCI formats is 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. The first group uses DCI format 1, including terminal devices 0 to terminal devices 23, and the PS-RNTI (power saving-RNTI) is configured as OXAAAA; the second group uses DCI format 2, including terminal devices 24 to terminal devices 35, and the PS-RNTI is configured as OXBBBB; the third group uses DCI format 3, including terminal devices 36 to terminal devices 43, and the PS-RNTI is configured as OXCCCC; the fourth group uses DCI format 4, including terminal devices 44 to terminal devices 49, and the PS-RNTI is configured as OXDDDD.

[0081] Table 1 Terminal device grouping and adopted DCI format

[0082]

[0083] The DCI formats used by the four terminal device groups can be shown in Table 1. Taking the group UE0 to UE23 as an example, the network device can configure UE0 to UE23 separately through RRC signaling:

[0084] DCI pattern: pattern1-wake up;

[0085] Block index: value range [0, 23];

[0086] DCI length: 24 bits;

[0087] PS-RANTI:OXAAAA;

[0088] The network device indicates whether the corresponding terminal device should be awakened in the corresponding block index in the DCI according to the high-level configuration, and scrambles the CRC check bits of the DCI with PS-RNTIOXAAAA. The terminal device monitors the PDCCH scrambled with PS-RNTIOXAAAA. If the PDCCH grouped by the terminal device is successfully detected, it reads the wake-up indication in the blockindex according to the configuration. If the indication is awake, it will wake up in the subsequent DRX active period and monitor the PDCCH; if the indication is not awake, it will not wake up in the subsequent DRX active period and continue to enter the DRX off state.

[0089] As can be seen from Table 1, when the length of all DCI formats is 24 bits, the minimum number of users supported is 24, 12, 8, and 6, respectively. The smaller the length of each information block of different DCI formats, the more users are supported. By introducing different DCI formats for different data transmission functions, the utilization efficiency of DCI is improved.

[0090] This embodiment of the present application provides a communication device. Figure 6 , is a schematic diagram of the structure of a communication device provided in an embodiment of the present application. The communication device 600 includes a transceiver module 610 and a processing module 620. The communication device can be used to implement the functions of the network device in any of the above method embodiments. For example, the communication device can be a network device or a chip included in the network device.

[0091] When the communication device acts as a network device, executing Figure 3 In the method embodiment shown in , the transceiver module 610 is used to send 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, and the N DCI format information respectively correspond to data transmission functions of N different terminal devices, where N is a positive integer; the processing module 620 is used to send the first DCI to the first terminal device through the transceiver module 610 according to the first DCI format information.

[0092] In one possible design, the data transmission function includes one or more of the following:

[0093] Whether to wake up during the 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 (PDCCH) skipping scheme during the DRX activation period.

[0094] In one 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 in the M information blocks; or, the length of the first DCI; or, the length of the information block.

[0095] In one possible design, the transceiver module 610 is also used to send 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 a first DCI, and the first RNTI corresponds to the first DCI format information.

[0096] In one possible design, the time domain position of the first DCI sent by the transceiver module 610 is located in the non-activation period of DRX, and the transceiver module 610 is also used to send information to the first terminal device for indicating the time advance of the time domain position of the first DCI relative to the next DRX activation period.

[0097] In one possible design, the transceiver module 610 is also used to send one or more of the following information through a radio resource control RRC message: first DCI format information, information indicating the first RNTI, and information indicating the time advance of the time domain position of the first DCI relative to the next DRX activation period.

[0098] It should be understood that the processing module 620 involved in the communication device can be implemented by a processor or a processor-related circuit component, and the transceiver module 610 can be implemented by a transceiver or a transceiver-related circuit component. The operations and / or functions of each module in the communication device are respectively to achieve Figure 3 or Figure 4 For the sake of brevity, the corresponding process of the method shown in is not repeated here.

[0099] See also Figure 7 , is another structural diagram of a communication device provided in an embodiment of the present application. The communication device may be specifically a network device, such as a base station, for implementing the functions of the network device involved in any of the above method embodiments.

[0100] The network device includes: one or more radio frequency units, such as a remote radio unit (RRU) 701 and one or more baseband units (BBU) (also called digital units, DU) 702. The RRU 701 can be called a transceiver unit, a transceiver, a transceiver circuit, or a transceiver, etc., and may include at least one antenna 7011 and a radio frequency unit 7012. The RRU 701 part is mainly used for transmitting and receiving radio frequency signals and converting radio frequency signals into baseband signals. The BBU 702 part is mainly used for baseband processing, controlling the base station, etc. The RRU 701 and BBU 702 can be physically set together or physically separated, that is, a distributed base station.

[0101] The BBU 702 is the control center of the base station, which can also be called a processing unit. It is mainly used to perform baseband processing functions such as channel coding, multiplexing, modulation, spread spectrum, etc. For example, the BBU (processing unit) 702 can be used to control the base station to execute the operation process of the network device in the above method embodiment.

[0102] In one example, the BBU 702 may be composed of one or more single boards, and multiple single boards may jointly support a wireless access network with a single access indication (such as an LTE network), or may respectively support wireless access networks with different access standards (such as an LTE network, a 5G network, or other networks). The BBU 702 may also include a memory 7021 and a processor 7022, and the memory 7021 is used to store necessary instructions and data. The processor 7022 is used to control the base station to perform necessary actions, for example, to control the base station to perform the sending operation in the above method embodiment. The memory 7021 and the processor 7022 may serve one or more single boards. That is, a memory and a processor may be separately set on each single board. Alternatively, multiple single boards may share the same memory and processor. In addition, necessary circuits may also be provided on each single board.

[0103] This embodiment of the application also provides another communication device, see Figure 8 , is a schematic diagram of the structure of another communication device provided in an 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 in any of the above method embodiments. For example, the communication device can be a terminal device, such as a handheld terminal device or an in-vehicle terminal device; the communication device can also be a chip included in the terminal device, or a device including the terminal device, such as various types of vehicles.

[0104] When the communication device is used as a terminal device, executing Figure 3 In the method embodiment shown in , the transceiver module 810 is used 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 N is a positive integer; the processing module 820 is used to receive the first DCI from the network device according to the first DCI format information.

[0105] In one possible design, the data transmission function includes one or more of the following:

[0106] Whether to wake up during the 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 (PDCCH) skipping scheme during the DRX activation period.

[0107] In one 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 in the M information blocks; or, the length of the first DCI; or, the length of the information block.

[0108] In one possible design, the transceiver module 810 is also used to receive information indicating a first wireless network temporary identifier RNTI from a network device, where the first RNTI corresponds to the first DCI format information; and receive the first DCI according to the first RNTI.

[0109] In one possible design, the time domain position for receiving the first DCI is located in the non-activation period of the DRX, and the transceiver module 810 is further used to receive information from the network device indicating the time advance of the time domain position of the first DCI relative to the next DRX activation period.

[0110] In one possible design, the transceiver module 810 is also used to receive one or more of the following information through a radio resource control RRC message: first DCI format information, information indicating a first RNTI, and information indicating a time advance of a time domain position of the first DCI relative to a next DRX activation period.

[0111] The processing module 820 involved in the communication device can be implemented by a processor or a processor-related circuit component, and the transceiver module 810 can be implemented by a transceiver or a transceiver-related circuit component. The operations and / or functions of each module in the communication device are respectively to achieve Figure 3 or Figure 4 For the sake of brevity, the corresponding process of the method shown in is not repeated here.

[0112] See also Figure 9 , is another structural diagram of a communication device provided in an embodiment of the present application. The communication device may specifically be a terminal device. For ease of understanding and illustration, Figure 9 In this article, the terminal device is a mobile phone. Figure 9As shown, the terminal device includes a processor and may also include a memory. Of course, it may also include a radio frequency circuit, an antenna, and input and output devices. The processor is mainly used to process communication protocols and communication data, as well as to control the terminal device, execute software programs, and process software program data. The memory is mainly used to store software programs and data. The radio frequency circuit is mainly used for converting baseband signals into radio frequency signals and processing radio frequency signals. The antenna is mainly used to transmit and receive radio frequency signals in the form of electromagnetic waves. Input and output devices, such as touch screens, display screens, keyboards, etc., are 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 input and output devices.

[0113] When data needs to be sent, the processor performs baseband processing on the data to be sent and outputs the baseband signal to the RF circuit. The RF circuit performs RF processing on the baseband signal and then transmits the RF signal to the outside in the form of electromagnetic waves through the antenna. When data is sent to the terminal device, the RF circuit receives the RF signal through the antenna, converts the RF 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 the sake of explanation, Figure 9 Only one memory and processor are shown. In actual terminal device products, one or more processors and one or more memories may exist. Memory may also be referred to as a storage medium or storage device. The memory may be provided independently of the processor or integrated with the processor, and this is not limited in the embodiments of the present application.

[0114] In the embodiment of the present application, the antenna and radio frequency circuit with transceiver functions can be regarded as the transceiver unit of the terminal device, and the processor with processing function can be regarded as the processing unit of the terminal device. Figure 9 As shown, the terminal device includes a transceiver unit 910 and a processing unit 920. The transceiver unit may also be referred to as a transceiver, transceiver, transceiver device, etc. The processing unit may also be referred to as a processor, processing board, processing module, processing device, etc. Optionally, the device in the transceiver unit 910 that implements the receiving function may be considered a receiving unit, and the device in the transceiver unit 910 that implements the transmitting function may be considered a transmitting unit, that is, the transceiver unit 910 includes a receiving unit and a transmitting unit. The transceiver unit may also be sometimes referred to as a transceiver, transceiver, or transceiver circuit, etc. The receiving unit may also be sometimes referred to as a receiver, receiver, or receiving circuit, etc. The transmitting unit may also be sometimes referred to as a transmitter, transmitter, or transmitting circuit, etc. It should be understood that the transceiver unit 910 is used to perform the transmitting and receiving operations on the terminal device side in the above-mentioned method embodiments, and the processing unit 920 is used to perform other operations on the terminal device in addition to the transmitting and receiving operations in the above-mentioned method embodiments.

[0115] An embodiment of the present application also provides a chip system, including: a processor, the processor is coupled to a memory, the memory is used to store programs or instructions, when the program or instructions are executed by the processor, the chip system implements the method in any of the above method embodiments.

[0116] Optionally, there may be one or more processors in the chip system. The processor may be implemented in hardware or software. When implemented in hardware, the processor may be a logic circuit, an integrated circuit, etc. When implemented in software, the processor may be a general-purpose processor implemented by reading software code stored in a memory.

[0117] Optionally, the memory in the chip system may be one or more memories. The memory may be integrated with the processor or may be provided separately from the processor, which is not limited in this application. For example, the memory may be a non-transient processor, such as a read-only memory (ROM), which may be integrated with the processor on the same chip or provided on different chips. This application does not specifically limit the type of memory or the configuration of the memory and the processor.

[0118] Exemplarily, the chip system can be a field programmable gate array (FPGA), an application specific integrated circuit (ASIC), a system on chip (SoC), a central processor unit (CPU), a network processor (NP), a digital signal processor (DSP), a microcontroller unit (MCU), a programmable logic device (PLD) or other integrated chips.

[0119] It should be understood that each step in the above method embodiment can be completed by hardware integrated logic circuits in a processor or by software instructions. The method steps disclosed in the embodiments of the present application can be directly embodied as being executed by a hardware processor, or by a combination of hardware and software modules in a processor.

[0120] An embodiment of the present application further provides a computer-readable storage medium, wherein the computer-readable storage medium stores computer-readable instructions. When a computer reads and executes the computer-readable instructions, the computer executes the method in any of the above method embodiments.

[0121] An embodiment of the present application further provides a computer program product. When a computer reads and executes the computer program product, the computer executes the method in any of the above method embodiments.

[0122] An embodiment of the present application also provides a communication system, which includes a network device and at least one terminal device described in the above method embodiments.

[0123] It should be understood that the processor mentioned in the embodiments of the present application may be a central processing unit (CPU), or may be other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or any conventional processor, etc.

[0124] 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 read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (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 and not limitation, many forms of RAM are available, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct rambus RAM (DR RAM).

[0125] 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, discrete hardware component, the memory (storage module) is integrated into the processor.

[0126] It should be noted that the memory described herein is intended to include, but not be limited to, these and any other suitable types of memory.

[0127] It should be understood that in various embodiments of the present application, the size of the serial numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present invention.

[0128] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0129] Those skilled in the art will 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 aforementioned method embodiments and will not be repeated here.

[0130] In the 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 schematic. For example, the division of the units is merely a logical function division. In actual implementation, there may be other division methods, such as 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 mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0131] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of the solution of this embodiment according to actual needs.

[0132] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0133] If the 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 the present application, or the part that contributes to the prior art or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0134] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection 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, and different DCI formats have different information block lengths; 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 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 (PDCCH) skipping scheme 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: The 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 of sending the first DCI by the network device is within a DRX inactive period, and the method further includes: The network device sends information to the first terminal device for indicating the time advance of the time domain position of the first DCI relative to the 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 timing 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: A first terminal device receives 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, and different DCI formats have different information block lengths; the N DCI format information respectively correspond to data transmission functions of N different terminal devices, where the data transmission functions of the terminal devices are combinations of power saving schemes adopted by the terminal devices, 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 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 (PDCCH) skipping scheme 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: The 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 radio 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 within a DRX inactive period, and the method further includes: The first terminal device receives information from the network device for indicating the time advance of the time domain position of the first DCI relative to the 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 timing 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 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 performs the method according to any one of claims 1 to 6, or the apparatus performs the method according to any one of claims 7 to 12.

14. A readable storage medium, characterized in that Used to store instructions, which, when executed, enable the method according to any one of claims 1 to 6 to be implemented, or enable the method according to any one of claims 7 to 12 to be implemented.

15. 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.

Images