Downlink control information detection method and device

Abstract

The invention provides a downlink control information detection method and device, aims to reduce the energy consumption of blind detection of downlink control information, and relates to the technical field of wireless communication. In the method, a first communication device comprises a first module and a second module, and the power consumption of the first module is lower than that of the second module. The first communication device receives first information, the first information indicates a blind detection mode of downlink control information, and the blind detection mode comprises blind detection of the downlink control information by using a first module or blind detection of the downlink control information by using a second module. The first communication device detects downlink control information based on a blind detection method. Based on the scheme, the terminal equipment can perform blind detection on the downlink control information based on the first module or the second module through the blind detection mode indicated by the network equipment, so that compared with the prior art that the first module awakens the second module to perform blind detection on the downlink control information, the frequency of awakening the second module can be reduced, and the user experience can be improved. And the second module can be prevented from being frequently awakened, so that the energy-saving purpose is achieved.

Description

Technical Field

[0001] This application relates to the field of wireless communication technologies, and in particular, to a method and apparatus for detecting downlink control information. Background Art

[0002] For a connected terminal, blind detection of the physical downlink control channel (PDCCH) is a necessary process for the terminal to obtain uplink and downlink scheduling. Since there is no way to obtain the configured time-frequency resource location before PDCCH blind detection, the terminal needs to perform blind detection according to a predetermined rule in several preset control resource sets (CORESETs), resulting in a large number of PDCCH blind detection times and a relatively high power consumption ratio in the overall energy consumption of the terminal. Therefore, in the evolution of cellular networks, optimization design has been carried out for terminal PDCCH blind detection. Summary of the Invention

[0003] This application provides a method and apparatus for detecting downlink control information, in order to reduce the energy consumption of blind detecting downlink control information.

[0004] In a first aspect, a method for detecting downlink control information is provided. This method can be executed by a first communication device or a chip / chip system. Among them, the first communication device can be a network device or a terminal device. In this method, the first communication device includes a first module and a second module, and the power consumption of the first module is lower than that of the second module. The first communication device receives a first piece of information, where the first piece of information indicates a blind detection method for downlink control information, and the blind detection method includes blind detecting downlink control information using the first module or blind detecting downlink control information using the second module. The first communication device detects the downlink control information based on the blind detection method.

[0005] Based on this solution, the network device can indicate the blind detection method of downlink control information to the terminal device, and the terminal device can then, based on the indication of this blind detection method, blind detect downlink control information based on the first module or blind detect downlink control information based on the second module. Compared with the related art in which the second module is awakened by the first module to blind detect downlink control information, the number of times of awakening the second module can be reduced, and the frequent awakening of the second module can also be avoided, achieving the purpose of energy saving.

[0006] In a possible implementation manner, the first piece of information is carried in a low-power wake-up signal, or the first piece of information is carried in a radio resource control signaling. Based on the above solution, the blind detection method of downlink control information can be indicated by the low-power wake-up signal or the radio resource control signaling. Among them, indicating the blind detection method in the low-power wake-up signal can be received by the first module, so the energy consumption of the terminal device can be further reduced.

[0007] In a possible implementation, the first information indicates blind detection of downlink control information using a second module. The first information further includes a first condition, which is used to switch from blind detection of downlink control information by the second module to blind detection of downlink control information based on a first module. Based on this solution, by controlling the switching of the blind detection method through the first condition, the power consumption caused by the second module blindly detecting downlink control information for a long time can be avoided.

[0008] In a possible implementation, the downlink control information includes second information and third information. The first information indicates the blind detection method of the second information, and the second information and the third information do not overlap. The first communication device detects the second information based on the blind detection method.

[0009] Based on this solution, the downlink control information can be multi-level downlink control information, and the first information can indicate the blind detection method of the first-level downlink control information. The multi-level downlink control information can reduce the decoding delay of the downlink control information.

[0010] In a possible implementation, the second information further includes one or more of the following: the third information time-frequency resource or the modulation and coding strategy of the third information.

[0011] Based on this solution, by indicating the time-frequency resource or modulation and coding strategy of the next-level downlink control information through the first-level downlink control information, the flexibility can be improved compared with being configured by radio resource control signaling.

[0012] In a possible implementation, the second information is carried on a first downlink control channel, and the third information is carried on a second downlink control channel. Alternatively, the second information is carried on a downlink control channel, and the third information is carried on a downlink data channel.

[0013] Based on this solution, the third information and the second information can be carried on different downlink control channels, or the second information can be carried on a downlink control channel while the third information is carried on a downlink data channel.

[0014] In a possible implementation, when the first information indicates the existence of downlink control information, the first communication device detects the downlink control information based on the blind detection method.

[0015] In a possible implementation, the first information further indicates that the downlink control information schedules uplink transmission and / or the downlink control information schedules downlink transmission. Based on this solution, the first information can indicate whether the downlink control information is downlink-scheduled control information or uplink-scheduled control information.

[0016] In a possible implementation, the first information further indicates a first duration, which is the duration to skip when detecting the downlink control information. Based on this solution, the first information can indicate the first duration, that is, it can support skipping of the downlink control information, so as to increase the blind detection period and reduce the power consumption of the terminal device.

[0017] In a possible implementation, the first information further indicates whether the downlink control information is cross-carrier scheduled downlink control information.

[0018] In a possible implementation, the first information further indicates an aggregation level or an aggregation level group. Wherein, the aggregation level group includes one or more aggregation levels. The downlink control information is detected at the detection position corresponding to the aggregation level or at the detection position corresponding to the aggregation level group.

[0019] In a possible implementation, the first information further indicates an aggregation level and a target detection position, and the target detection position is part or all of the detection positions corresponding to the aggregation level indicated by the first information. The downlink control information is detected at the target detection position based on the blind detection method.

[0020] Based on the above solution, the first information can indicate information such as an aggregation level or an aggregation level group, so that the detection position of the blind detection can be determined during the blind detection, further reducing the power consumption of the terminal device.

[0021] In a second aspect, a method for detecting downlink control information is provided. This method can be executed by a second communication device or a chip / chip system. Wherein, the second communication device can be a network device or a terminal device. The second communication device determines first information, and the first information indicates a blind detection method for the downlink control information. The blind detection method includes blind detecting the downlink control information using a first module of the communication device or blind detecting the downlink control information using a second module of the communication device. The second communication device sends the first information to the communication device.

[0022] In a possible implementation, the first information is carried in a low-power wake-up signal, or the first information is carried in radio resource control signaling.

[0023] In a possible implementation, the first information further includes a first condition, and the first condition is used to indicate switching from blind detecting the downlink control information using the second module to blind detecting the downlink control information based on the first module.

[0024] In a possible implementation, the downlink control information includes second information and third information, the first information indicates the blind detection method for the second information, and the second information and the third information do not overlap. The first information indicates the blind detection method for the second information.

[0025] In a possible implementation, the second information further includes one or more of the following: the third information time-frequency resource or the modulation and coding strategy of the third information.

[0026] In a possible implementation, the second information is carried in the first downlink control channel, and the third information is carried in the second downlink control channel. Alternatively, the second information is carried in the downlink control channel, and the third information is carried in the downlink data channel.

[0027] In a possible implementation, the first information further indicates whether downlink control information exists.

[0028] In a possible implementation, the first information further indicates that the downlink control information schedules uplink transmission and / or the downlink control information schedules downlink transmission.

[0029] In a possible implementation, the first information further indicates a first duration, which is the duration to skip when detecting the downlink control information.

[0030] In a possible implementation, the first information further indicates whether the downlink control information is cross-carrier scheduled downlink control information.

[0031] In a possible implementation, the first information further indicates an aggregation level or an aggregation level group. The aggregation level group includes one or more aggregation levels, where the aggregation level corresponds to the detection position of the downlink control information, or the aggregation level group corresponds to the detection position of the downlink control information.

[0032] In a possible implementation, the first information further indicates an aggregation level and a target detection position, where the target detection position is part or all of the detection positions corresponding to the aggregation level indicated by the first information.

[0033] In a third aspect, a communication device is provided, including: a processing unit and a transceiver unit. The transceiver unit is configured to receive first information, where the first information indicates a blind detection manner of downlink control information, and the blind detection manner includes blindly detecting the downlink control information using a first module included in the communication device or blindly detecting the downlink control information using a second module included in the communication device. The processing unit is configured to activate the first module or the second module to detect the downlink control information based on the blind detection manner.

[0034] In a possible implementation, the first information is carried in a low-power wake-up signal, or the first information is carried in radio resource control signaling.

[0035] In a possible implementation, the first information indicates blindly detecting the downlink control information using the second module. The first information further includes a first condition for switching from blindly detecting the downlink control information using the second module to blindly detecting the downlink control information based on the first module.

[0036] In a possible implementation, the downlink control information includes second information and third information. The first information indicates the blind detection manner of the second information, and the second information and the third information do not overlap. The processing unit is specifically configured to detect the second information based on the blind detection manner.

[0037] In a possible implementation, the second information further includes one or more of the following: the third information time-frequency resource or the modulation and coding strategy of the third information.

[0038] In a possible implementation, the second information is carried on the first downlink control channel, and the third information is carried on the second downlink control channel. Alternatively, the second information is carried on the downlink control channel, and the third information is carried on the downlink data channel.

[0039] In a possible implementation, when the first information indicates the existence of the downlink control information, the processing unit is specifically configured to detect the downlink control information based on the blind detection manner.

[0040] In a possible implementation, the first information further indicates that the downlink control information schedules uplink transmission and / or the downlink control information schedules downlink transmission.

[0041] In a possible implementation, the first information further indicates a first duration, and the first duration is the duration to be skipped when detecting the downlink control information.

[0042] In a possible implementation, the first information further indicates whether the downlink control information is cross-carrier scheduled downlink control information.

[0043] In a possible implementation, the first information further indicates an aggregation level or an aggregation level group. The aggregation level group includes one or more aggregation levels. The processing unit is specifically configured to detect the downlink control information at the detection position corresponding to the aggregation level or at the detection position corresponding to the aggregation level group.

[0044] In a possible implementation, the first information further indicates an aggregation level and a target detection position, and the target detection position is part or all of the detection positions corresponding to the aggregation level indicated by the first information. The processing unit is specifically configured to detect the downlink control information at the target detection position based on the blind detection manner.

[0045] In a fourth aspect, a communication device is provided, including a processing unit and a transceiver unit. The processing unit is configured to determine first information, where the first information indicates the blind detection manner of the downlink control information, and the blind detection manner includes blindly detecting the downlink control information using a first module of the communication device or blindly detecting the downlink control information using a second module of the communication device. The transceiver unit is configured to send the first information to the communication device.

[0046] In a possible implementation, the first information is carried in a low-power wake-up signal, or the first information is carried in radio resource control signaling.

[0047] In a possible implementation, the first information further includes a first condition, and the first condition is used to indicate a handover from blind detection of downlink control information by a second module to blind detection of downlink control information by a first module.

[0048] In a possible implementation, the downlink control information includes second information and third information. The first information indicates the blind detection manner of the second information, and the second information and the third information do not overlap. The first information indicates the blind detection manner of the second information.

[0049] In a possible implementation, the second information further includes one or more of the following: the time-frequency resource of the third information or the modulation and coding strategy of the third information.

[0050] In a possible implementation, the second information is carried on a first downlink control channel, and the third information is carried on a second downlink control channel. Alternatively, the second information is carried on a downlink control channel, and the third information is carried on a downlink data channel.

[0051] In a possible implementation, the first information further indicates whether the downlink control information exists.

[0052] In a possible implementation, the first information further indicates that the downlink control information schedules uplink transmission and / or the downlink control information schedules downlink transmission.

[0053] In a possible implementation, the first information further indicates a first duration, and the first duration is the duration to be skipped when detecting the downlink control information.

[0054] In a possible implementation, the first information further indicates whether the downlink control information is cross-carrier scheduled downlink control information.

[0055] In a possible implementation, the first information further indicates an aggregation level or an aggregation level group. Among them, the aggregation level group includes one or more aggregation levels, the aggregation level corresponds to the detection position of the downlink control information, or the aggregation level group corresponds to the detection position of the downlink control information.

[0056] In a possible implementation, the first information further indicates an aggregation level and a target detection position, and the target detection position is part or all of the detection positions corresponding to the aggregation level indicated by the first information.

[0057] Fifth aspect, the present application provides a communication device, including a processor, the processor is coupled to a memory, the memory is used to store computer programs or instructions, and the processor is used to execute the computer programs or instructions to implement the implementation methods of the first aspect and the second aspect above. The memory can be located inside the device or outside the device. The number of the processors is one or more.

[0058] Sixth aspect, the present application provides a communication device, including: a processor and an interface circuit, the interface circuit is used to communicate with other devices, and the processor is used to implement the implementation methods of the first aspect and the second aspect above.

[0059] Seventh aspect, a communication device is provided. The device includes a logic circuit and an input-output interface.

[0060] Eighth aspect, the present application provides a communication system, including: a first communication device and a second communication device for implementing the implementation methods of the first aspect and the second aspect above.

[0061] Ninth aspect, the present application further provides a chip system, including: a processor for implementing the implementation methods of the first aspect and the second aspect above.

[0062] Tenth aspect, the present application further provides a computing program product, including computer execution instructions. When the computer execution instructions run on a computer, the implementation methods of the first aspect and the second aspect above are executed.

[0063] Eleventh aspect, the present application further provides a computer-readable storage medium. A computer program or instruction is stored in the computer-readable storage medium. When the instruction runs on a computer, the implementation methods of the first aspect and the second aspect above are implemented.

[0064] The technical effects achieved by the second aspect to the eleventh aspect can refer to the technical effects in the first aspect, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0065] Figure 1 It is a schematic diagram of a communication system provided by an embodiment of the present application;

[0066] Figure 2 It is a schematic block diagram of a terminal provided by an embodiment of the present application;

[0067] Figure 3A It is a schematic diagram of whether a WUS indicates detecting a PDCCH;

[0068] Figure 3B It is a schematic diagram of an SCell not monitoring a PDCCH;

[0069] Figure 3CIt is a schematic diagram of PDCCH skipping;

[0070] Figure 3D It is a schematic diagram of a search space;

[0071] Figure 4 It is an exemplary flowchart of a method for detecting downlink control information provided by an embodiment of the present application;

[0072] Figure 5A It is a schematic diagram of a two - level DCI provided by an embodiment of the present application;

[0073] Figure 5B It is another schematic diagram of a two - level DCI provided by an embodiment of the present application;

[0074] Figure 6 It is a schematic diagram of DCI skipping provided by an embodiment of the present application;

[0075] Figure 7 It is a schematic diagram of a communication device provided by an embodiment of the present application;

[0076] Figure 8 It is another schematic diagram of a communication device provided by an embodiment of the present application;

[0077] Figure 9 It is another schematic diagram of a communication device provided by an embodiment of the present application;

[0078] Figure 10 It is another schematic diagram of a communication device provided by an embodiment of the present application. Detailed implementation manners

[0079] To facilitate understanding of the technical solutions provided by the embodiments of the present application, the following explains and illustrates the technical terms related to the embodiments of the present application.

[0080] 1) The low power wake up signal (LP-WUS) is used in multiple low power communication protocols, such as long range radio (LoRa), bluetooth, or wireless fidelity (WiFi). LP-WUS allows for the design and implementation of low power receivers, which helps reduce the power consumption of devices. LP-WUS is very similar to WUS, which is sent based on the traditional Zadoff-Chu (ZC) sequence and the downlink control information (DCI) in format 2-6 of the physical downlink control channel (PDCCH). If WUS is detected, the paging message will continue to be decoded; otherwise, the device will return to the sleep state and wait for the next opportunity to receive WUS.

[0081] The technical solutions of the embodiments of this application can be applied to New Radio (NR) systems, Long Term Evolution (LTE) systems, LTE Frequency Division Duplex (FDD) systems, LTE Time Division Duplex (TDD), Worldwide Interoperability for Microwave Access (WiMAX) communication systems, fifth generation communication systems (5 th generation, 5G), next-generation wireless communication systems such as 6G, etc., which are not limited here.

[0082] Figure 1 is a schematic diagram of the architecture of the communication system 1000 to which the embodiments of this application are applied. As Figure 1 shown, the communication system includes a radio access network 100. Among them, the radio access network 100 may include at least one network device (such as Figure 1 110a and / or 110b in Figure 1 ), and may also include at least one terminal device (such as Figure 1This is only a schematic diagram. Other network devices may also be included in the communication system, such as wireless relay devices and wireless backhaul devices, which are not drawn in Figure 1 here.

[0083] A network device is a network-side device with wireless transceiver functions. The network device may be a device in a radio access network (RAN) that provides wireless communication functions for terminal devices, called a RAN device. For example, the network device may be a base station, an evolved NodeB (eNodeB), a transmission reception point (TRP), a next generation NodeB (gNB) in a 5th generation (5G) mobile communication system, a next generation NodeB in a 6th generation (6G) mobile communication system, a base station in a future mobile communication system, or an access node in a WiFi system, etc.; it may also be a module or unit that completes some functions of the base station. For example, it may be a central unit (CU) or a distributed unit (DU). Here, the CU completes the functions of the radio resource control protocol and the packet data convergence protocol (PDCP) of the base station, and may also complete the function of the service data adaptation protocol (SDAP); the DU completes the functions of the radio link control layer and the medium access control (MAC) layer of the base station, and may also complete some or all of the functions of the physical layer. For specific descriptions of the above protocol layers, reference may be made to the relevant technical specifications of the 3rd generation partnership project (3GPP). The network device may be a macro base station (such as Figure 1 110a in Figure 1 ), or a micro base station or an indoor station (such as

[0084] In another possible scenario, multiple RAN nodes cooperate to assist a terminal in achieving wireless access, and different RAN nodes respectively implement partial functions of a base station. For example, the RAN nodes can be a CU, a DU, a CU-control plane (CP), a CU-user plane (UP), or a radio unit (RU), etc. The CU and the DU can be separately provided, or can also be included in the same network element, such as a baseband unit (BBU). The RU can be included in a radio frequency device or a radio frequency unit, such as included in a remote radio unit (RRU), an active antenna unit (AAU), or a remote radio head (RRH).

[0085] In different systems, the CU (or CU-CP and CU-UP), the DU, or the RU can also have different names, but those skilled in the art can understand their meanings. For example, in an open radio access network (ORAN) system, the CU can also be called an O-CU (open CU), the DU can also be called an O-DU, the CU-CP can also be called an O-CU-CP, the CU-UP can also be called an O-CU-UP, and the RU can also be called an O-RU. For the convenience of description, in this application, the CU, CU-CP, CU-UP, DU, and RU are used as examples for description. Any one of the CU (or CU-CP, CU-UP), DU, and RU in this application can be implemented by a software module, a hardware module, or a combination of a software module and a hardware module.

[0086] A terminal device is a user-side device with wireless transceiver capabilities. A terminal device can also be referred to as a user equipment (UE), mobile station, mobile terminal, etc. Terminal devices can be widely applied in various scenarios, such as device-to-device (D2D), vehicle to everything (V2X) communication, machine-type communication (MTC), internet of things (IOT), virtual reality, augmented reality, industrial control, autonomous driving, telemedicine, smart grid, smart furniture, smart office, smart wearables, smart transportation, smart city, etc. Terminal devices can be mobile phones, tablets, computers with wireless transceiver capabilities, wearable devices, vehicles, drones, helicopters, airplanes, ships, robots, robotic arms, smart home devices, etc. Embodiments of this application do not limit the specific technologies and specific device forms adopted by terminal devices.

[0087] Network devices and terminal devices can be fixed in position or movable. Network devices and terminal devices can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; they can also be deployed on water; they can also be deployed on airplanes, balloons, and artificial satellites in the air. Embodiments of this application do not limit the application scenarios of network devices and terminal devices.

[0088] The roles of network devices and terminal devices can be relative. For example, Figure 1 the helicopter or drone 120i in [description] can be configured as a mobile network device. For those terminal devices 120j that access the radio access network 100 through 120i, the terminal device 120i is a network device; but for the network device 110a, 120i is a terminal device, that is, the communication between 110a and 120i is through the radio air interface protocol. Of course, the communication between 110a and 120i can also be through the interface protocol between network devices. In this case, relative to 110a, 120i is also a network device. Therefore, network devices and terminal devices can both be uniformly referred to as communication devices. Figure 1 110a and 110b in [description] can be referred to as communication devices with network device functions. Figure 1 120a - 120j in [description] can be referred to as communication devices with terminal device functions.

[0089] In an embodiment of the present application, the functions of the network device may also be performed by a module (such as a chip) in the network device, or may be performed by a control subsystem including the functions of the network device. The control subsystem including the functions of the network device here may be a control center in the above application scenarios such as smart grid, industrial control, intelligent transportation, and smart city. The functions of the terminal device may also be performed by a module (such as a chip or a modem) in the terminal device, or may be performed by a device including the functions of the terminal device. In the following text, an example is described in which the functions of the terminal device are performed by the terminal and the functions of the network device are performed by the base station.

[0090] With the development of 5G technology, the 5G network has higher and higher requirements for the capabilities of terminals. As the requirements for terminal capabilities increase, the hardware of the terminal will increase accordingly, and the power consumption of the terminal will inevitably increase. Compared with LTE terminals, the maximum power supported by 5G terminals is 29 dBm. In typical services, such as comprehensive web browsing, instant messaging, games, or food, etc., the communication power consumption of 5G terminals increases by more than 200% on average compared with LTE terminals. The long-term battery life of the terminal is an important aspect of the user experience and will affect the applicability of 5G terminals or services. Therefore, the long-term battery life of 5G terminals faces great challenges, and studying how to save the power consumption of 5G terminals is the key to solving this problem.

[0091] Refer to Figure 2 , the terminal may include a low power wake up radio (LR) and a main radio (MR). It can be understood that LR and MR can be integrated as logical function modules on the same processor (chip), or LR and MR can be separate processors (chips) respectively. The power consumption of LR is lower than that of MR. In another example, the bandwidth of LR is also lower than that of MR. It should be noted that MR and LR are only shown as exemplary names, LR can also be called an auxiliary module, and MR can also be called a main module. The present application does not make specific limitations. In the embodiments of the present application, an example is described in which LR is the first module and MR is the second module.

[0092] For a connected terminal, the blind detection of the physical downlink control channel (PDCCH) is a necessary process for the terminal to obtain uplink and downlink scheduling. Since there is no way to obtain the configured time-frequency resource location before the PDCCH blind detection, the terminal needs to perform blind detection according to a predetermined rule in several preset control resource sets (CORESET), resulting in a large number of PDCCH blind detection times and a relatively high power consumption ratio in the overall energy consumption of the terminal. Therefore, in the evolution of cellular networks, the blind detection of the terminal PDCCH has been optimized and designed.

[0093] In R15, the PDCCH monitoring occasion is designed. The upper 4 bits in the remaining minimum system information (RMSI)-PDCCH-configuration (Config) indicate the common search space, and the lower 4 bits indicate the monitoring occasion of the PDCCH to reduce the indication overhead of the PDCCH. At the same time, after the terminal configures the discontinuous reception (DRX) cycle, the PDCCH is not detected during the sleep period, ensuring that the terminal is in the sleep state to the greatest extent and achieving the purpose of energy saving.

[0094] See Figure 3A , in R16, a DRX mechanism based on WUS is designed, and WUS is used to carry whether the terminal needs to be woken up during the next active state. At the same time, see Figure 3B , for the cross-carrier scheduling scenario, it can be dynamically indicated which physical downlink control channel (PDCCH) blind detection functions of the secondary cells (SCells) need to be activated. If not, the PDCCH detection of the neighboring cells is turned off. In R17, PDCCH skipping is designed, indicating that the PDCCH blind detection can be skipped for a period of time, equivalently increasing the cycle of the PDCCH blind detection and effectively reducing the power consumption of the terminal, as Figure 3C shown. At the same time, the switching of the Search Space Set Group (SSSG) is also designed, which allows the terminal to switch between different SSSGs according to demand during different monitoring cycles, as Figure 3D shown.

[0095] In R18, the 3rd generation partnership project (3GPP) studies the low power (LP) wake up signal (WUS), aiming to evaluate the potential of 5G terminals equipped with low LP to reduce power consumption. Generally speaking, even if a 5G terminal does not send or receive any data, it will consume dozens of milliwatts of power, which is called idle power consumption. This idle power consumption is caused by the fact that 5G terminals must regularly measure and detect potential LP-WUS. Among them, the low power (LP) receiver (LR) will regularly measure and detect LP-WUS, and the main receiver (MR) can be turned off when the LR is in the active state and searching for potential LP-WUS signals. The LR can wake up the MR to send and receive data when LP-WUS is detected.

[0096] However, although the NR introduces the above-mentioned various optimization measures, for connected-state terminals, the main power consumption still comes from the PDCCH blind detection. How to reduce the power consumption of PDCCH blind detection still needs further research.

[0097] In view of this, the embodiments of the present application provide a method for detecting downlink control information. In this method, the base station indicates the blind detection method of downlink control information through the first information. For example, the blind detection method includes blindly detecting downlink control information based on the first module or blindly detecting downlink control information based on the second module. The terminal blindly detects downlink control information by activating the first module or the second module based on this blind detection method. Based on this solution, the base station can indicate the blind detection method of downlink control information to the terminal, and the terminal can, based on the indication of this blind detection method, blindly detect downlink control information based on the first module or blindly detect downlink control information based on the second module. Compared with the related art where the LR always wakes up the MR to blindly detect downlink control information, the number of times of waking up the MR can be reduced, and the frequent waking up of the MR can also be avoided, achieving the purpose of energy saving.

[0098] Refer to Figure 4 , which is an exemplary flowchart of a method for detecting downlink control information provided by the embodiments of the present application, and may include the following operations. Figure 4 In the shown embodiment, the first communication device may include a first module and a second module, and the power consumption of the first module is lower than that of the second module. Figure 4 In the shown embodiment, the first communication device is taken as the terminal and the second communication device is taken as the base station for illustration.

[0099] S401: The base station sends the first information to the terminal.

[0100] Correspondingly, the terminal receives the first information from the base station.

[0101] Among them, the first information may indicate the blind detection method of downlink control information. In this article, the downlink control information is taken as DCI for illustration. For example, the blind detection method may include blindly detecting DCI based on the second module. For another example, the blind detection method may include blindly detecting DCI based on the first module. Since blindly detecting DCI through the first module with lower power can reduce the power consumption of the terminal. Compared with blindly detecting DCI based on the second module, when blindly detecting DCI based on the first module, the first information can carry less information and adopt a more concise indication.

[0102] S402: The terminal activates the first module or the second module to detect DCI.

[0103] For example, if the first piece of information indicates that the blind detection mode of DCI includes blind detecting DCI based on the second module, the terminal can activate or wake up or turn on the second module to blind detect DCI. Another example is that if the first piece of information indicates that the blind detection mode of DCI includes blind detecting DCI based on the first module, the terminal can activate or wake up or turn on the first module to blind detect DCI.

[0104] In a possible case, the first piece of information can be carried in a low-power wake-up signal. Hereinafter, the low-power wake-up signal is taken as an example of LP-WUS for illustration. For example, the LP-WUS can include the first piece of information indicating the blind detection mode of DCI. Exemplarily, the first piece of information can be a 1-bit indication information. When the value of the first piece of information is 0, it indicates that the blind detection mode of DCI includes blind detecting DCI based on the first module. When the value of the first piece of information is 1, it indicates that the blind detection mode of DCI includes blind detecting DCI based on the second module. Vice versa, when the value of the first piece of information is 1, it indicates that the blind detection mode of DCI includes blind detecting DCI based on the first module. When the value of the first piece of information is 0, it indicates that the blind detection mode of DCI includes blind detecting DCI based on the second module.

[0105] In another possible case, the first piece of information can be carried in radio resource control (RRC) signaling, such as RRC connection configuration or RRC reconfiguration, etc. This application does not make specific limitations. For a connected-mode terminal, the RRC signaling can configure the blind detection mode of DCI, such as blind detecting DCI based on the first module or based on the second module. Optionally, the RRC signaling can provide two configurations, one of which is the first blind detection mode and the other is the default configuration. When the first condition is met, it can be switched from the first blind detection mode to the second blind detection mode. For example, the RRC signaling can configure the first blind detection mode as blind detecting DCI based on the second module. When the first condition is met, the terminal can activate the first module and blind detect DCI based on the first module. In one example, the first condition can include that the second module does not detect DCI within a period of time. It should be noted that the period of time can be a duration or can also be implemented by time slots, sub-time slots, etc. For example, within N consecutive time slots, if the second module does not detect DCI, the terminal can activate the first module to blind detect DCI based on the first module.

[0106] It can be understood that the above first condition can be indicated by the base station or can be predefined by the protocol. If it is indicated by the base station, the first condition can be indicated through RRC signaling.

[0107] In a possible implementation, the DCI involved in the embodiments of the present application may be a single-level DCI. In a single-level DCI, all DCI content is transmitted on a single control channel, such as the PDCCH. One of the main advantages of the single-level DCI is spectral efficiency because the cyclic redundancy check (CRC) overhead of the control channel can be limited to only once per data transmission. In addition, the single-level DCI may be beneficial in terms of reliability because once a DCI is detected, the data can be decoded, and the single-level DCI usually receives stronger protection than the data.

[0108] In another possible implementation, the DCI involved in the embodiments of the present application may be a multi-level DCI. For example, the information included in one DCI can be divided into two DCIs or multiple DCIs for transmission. If the terminal needs to change the Numerology related to the subcarrier spacing and / or the cyclic prefix CP length for data decoding or adjust the bandwidth for data reception, it is desirable to have a very short delay to decode the DCI. If a two-level DCI is adopted and the first-level DCI has a potentially smaller bandwidth and is sent at the beginning of the time slot, the decoding delay of the control channel can be reduced, and the gap between the control and the data for bandwidth / Numerology adaptation can be minimized. Second, if the resource position of the control channel is quite fixed, or the maximum size of the resource is not sufficient to meet the required control channel capacity, more control channel resources can accommodate the first-level DCI by making the first-level DCI size smaller and placing the DCI content in the second-level DCI. Optionally, the single-level DCI and the multi-level DCI can coexist. For example, the single-level DCI or the multi-level DCI can be selected for transmission through different scenarios.

[0109] The following describes how the terminal blindly detects the DCI through the first module and the second module in the case where the DCI involved in the embodiments of the present application is a two-level DCI.

[0110] In a possible scenario, the DCI may include second information and third information, and the second information and the third information are different or non-overlapping. In this article, the second information may be understood as the first-level DCI, and the third information may be understood as the second-level DCI. The first-level DCI may be carried on the PDCCH, and the second-level DCI may be carried in different resources of the same PDCCH as the first-level DCI, or the second-level DCI may be carried in a different channel, such as the PDSCH or a different PDCCH, from the first-level DCI. For example, the first-level DCI may be carried on the first PDCCH, and the second-level DCI may be carried on the second PDCCH. Another example, the first-level DCI may be carried on the first time-frequency resource of the first PDCCH, and the second-level DCI may be carried on the second time-frequency resource of the first PDCCH. Another example, the first-level DCI may be carried on the PDCCH, and the second-level DCI may be carried on the PDSCH.

[0111] In an example, when the first-level DCI is carried on the first PDCCH and the second-level DCI is carried on the second PDCCH, the resources occupied by the second-level DCI, such as time domain resources and / or time-frequency resources, may be indicated by higher layer signaling, the first-level DCI, or LP-WUS, as Figure 5A shown. It can be understood that when slot and mini-slot scheduling are multiplexed, the first-level DCI or the first information may indicate the resources occupied by the second-level DCI. In other words, the first-level DCI or the first information may indicate the resources of the second-level DCI for mini-slot scheduling.

[0112] In another example, when the first-level DCI is carried on the PDCCH and the second-level DCI is carried on the PDSCH, the resources occupied by the second-level DCI, such as time domain resources and / or frequency domain resources, may be predefined or indicated by the first-level DCI or the first information. For example, the interval between the resources occupied by the second-level DCI in the PDSCH and the resources occupied by the data carried in the PDSCH may be predefined. Optionally, since the second-level DCI is carried on the PDSCH and data is also carried in the PDSCH, the demodulation reference signal (DMRS) for data demodulation may also be used for demodulation of the second-level DCI.

[0113] Optionally, the base station may indicate whether the DMRS configurations used by the PDCCH and PDSCH can be shared through the first information, such as whether quasi co location (QCL) relationships and channel measurement results can be shared. If the first information indicates that the DMRS configurations used by the PDCCH and PDSCH can be shared, then the same DMRS configuration can be used when demodulating the first-level DCI, the second-level DCI, and the data. This DMRS configuration may be indicated by RRC signaling.

[0114] Next, the method by which the first information indicates the resources occupied by the second-level DCI is introduced. The first information may indicate one or more of the time-domain resources or frequency-domain resources occupied by the second-level DCI.

[0115] In a possible scenario, the first information may indicate the frequency-domain resources of the second-level DCI through a resource block group (RBG). Among them, a larger RBG size may be configured to reduce the bit overhead of the RBG. Next, it will be described in combination with Table 1.

[0116] Table 1: An example of an RBG

[0117] BWP Size Configuration 1 Configuration 2 Configuration 3 1～36 2 4 8 37～72 4 8 16 73～144 8 16 32 145～275 16 16 32

[0118] Table 1 shows an example of an RBG in the related art. When the BWP size is 1 to 36, Configuration 1 may indicate that the RBG size is 2 RBs. Then, when the bandwidth part (BWP) size is 1 to 36, there are at most 18 RBGs, that is, 18 bits are required to indicate the BWP bandwidth. For example, the indication may be "100000000000000000" to indicate activating 2 RBs for communication. Similarly, when the BWP size is 37 to 72, Configuration 1 may indicate that the RBG size is 4 RBs. Then, there are at most 18 RBGs within this BWP, that is, 18 bits are required to indicate the BWP bandwidth. For example, the indication may be "100000000000000000" to indicate activating 4 RBs for communication, and so on.

[0119] Referring to Table 2, in the embodiments of the present application, a larger RBG size may be defined, that is, a larger number of RBs may be included in one RBG. Then, fewer RBGs may be included within the BWP, achieving a reduction in the bit overhead of the RBG.

[0120] Table 2: An example of an RBG

[0121] BWP Size Configuration X 1～36 16 37～72 16 73～144 32 145～275 64

[0122] In Table 2, when the BWP size is from 1 to 36, Configuration X can indicate that the RBG size is 16 RBs. Then, at most 3 RBGs can be included in this BWP, and 3 bits are required to indicate the BWP bandwidth. For example, the indication can be "100", which means activating the first 16 RBs for communication. Optionally, if the first information indicates the frequency-domain resources occupied by the second-level DCI in the PDSCH, Configuration X can be used by default to indicate the frequency-domain resources.

[0123] In another possible case, the time-domain resources occupied by the second-level DCI can be predefined. For example, the second-level DCI is default to be sent in N1 time slots (slots) after the time slot occupied by the first information, the starting time-domain symbol is M1, and the number of occupied symbols is 1, 2, or more. Alternatively, the time-domain resources occupied by the second-level DCI can be indicated by the first information. For example, the first information can indicate that the second-level DCI is sent in N2 time slots after the time slot occupied by the first information, the starting time-domain symbol is M2, and the number of occupied symbols is 1, 2, or more.

[0124] In yet another possible case, the first information can also indicate the MCS of the second-level DCI. For example, when the second-level DCI is carried by the PDSCH, the MCS table can be rows 0 to 15 of the PDSCH or physical uplink shared channel (PUSCH) table in the related art. The first information can indicate which row to use. For example, which row in the MCS table can be indicated by 4 bits. When the second-level DCI is carried by the PDSCH, the used MCS table can be a newly added table, or the MCS table of the PDSCH or PUSCH can be reused. In the case of reusing the MCS table of the PDSCH or PUSCH, the first information can only indicate the first 16 rows of this MCS table.

[0125] In a possible implementation, when the first-level DCI is carried in the PDCCH and the second-level DCI is carried in the PDSCH, the first information may further indicate whether the modulation and coding scheme (MCS) of the second-level DCI and the MCS of the data carried in the PDSCH are shared. The MCS of the second-level DCI and the MCS of the data carried in the PDSCH may have different options according to the positions where the second-level DCI and the data are multiplexed in the PDSCH. For example, the second-level DCI and the data may share the same MCS or use different MCSs. For example, the second-level DCI may fixedly use quadrature phase shift keying (QPSK). Optionally, the first information may further indicate separate coding or joint coding between the second-level DCI and the data carried in the PDSCH during coding.

[0126] In the embodiments of the present application, the blind detection method of the first-level DCI may be indicated by the above first information. The blind detection method of the second-level DCI may be indicated by the first-level DCI or may also be indicated by the above first information, and the present application does not make specific limitations. If the blind detection method of the second-level DCI is based on the detection of the first module, the terminal may detect the second-level DCI through the first module. If the blind detection method of the second-level DCI is based on the detection of the second module, the terminal may detect the second-level DCI through the second module.

[0127] Referring to Figure 5B , a schematic diagram of a blind detection method of a DCI is shown. As can be seen from Figure 5B a therein, the resources occupied by the second-level DCI may be indicated by the first-level DCI. The base station may indicate by the first information that the first-level DCI is detected by the second module, and the first-level DCI is carried in the PDCCH. Among them, the first information is carried in the RRC signaling, that is, the RRC signaling indicates that the blind detection method of the first-level DCI includes detection based on the second module. It can be understood that the second-level DCI may be detected by the first module or by the second module, and the blind detection method of the second-level DCI may be indicated by the RRC signaling or the first-level DCI. Optionally, the second-level DCI may be carried in the PDCCH or the PDSCH. Referring to the relevant descriptions above, details are not described herein again.

[0128] From Figure 5BAs can be seen from b in [description], the resources occupied by the second-level DCI can be indicated by LP-WUS, such as being indicated by the first information included in LP-WUS. The base station can indicate by the first information that the second-level DCI is detected by the second module, and the second-level DCI is carried on the PDSCH. Among them, the aforementioned first information is carried in LP-WUS, that is to say, LP-WUS indicates that the blind detection method of the second-level DCI includes detection based on the second module. It can be understood that the first-level DCI can be detected by the first module or by the second module, and the blind detection method of the first-level DCI can be indicated by LP-WUS or RRC signaling. Optionally, the first-level DCI can be carried on the PDCCH.

[0129] From Figure 5B As can be seen from c in [description], the resources occupied by the second-level DCI can be indicated by the first-level DCI. The base station can indicate by the first information that the first-level DCI is detected by the second module and the second-level DCI is detected by the second module. The first-level DCI is carried on the PDCCH and the second-level DCI is carried on the PDSCH. Among them, the aforementioned first information is carried in LP-WUS, that is to say, LP-WUS indicates that the blind detection method of the first-level DCI includes detection based on the second module, and the blind detection method of the second-level DCI includes detection based on the second module.

[0130] In the embodiments of the present application, the first information can also indicate other information to assist in reducing the blind detection complexity. The DCI in the following description can be replaced by the first-level DCI and / or the second-level DCI.

[0131] For example, the first information can indicate the presence or absence of DCI, or in other words, the first information can indicate whether there is DCI. For example, the first information can include 1-bit information to indicate the presence or absence of DCI. For instance, when the value of the 1-bit indication information is 0, it can indicate the absence of DCI, and when the value of the 1-bit indication information is 1, it can indicate the presence of DCI. Vice versa, when the value of the 1-bit indication information is 1, it can indicate the absence of DCI, and when the value of the 1-bit indication information is 0, it can indicate the presence of DCI. The terminal can detect the DCI based on the blind detection method indicated by the first information when the first information indicates the presence of DCI.

[0132] For another example, if the first information indicates the presence of DCI, the first information may further indicate whether the DCI is for uplink scheduling or for downlink scheduling. For example, the first information may include 1-bit indication information to indicate whether the DCI is for uplink scheduling or for downlink scheduling. For instance, when the value of the 1-bit indication information is 0, it may indicate that the DCI is for uplink scheduling; when the value of the 1-bit indication information is 1, it may indicate that the DCI is for downlink scheduling. Vice versa, when the value of the 1-bit indication information is 1, it may indicate that the DCI is for uplink scheduling; when the value of the 1-bit indication information is 0, it may indicate that the DCI is for downlink scheduling.

[0133] Optionally, the first information may jointly indicate the presence or absence of DCI, and whether the DCI is for uplink scheduling or for downlink scheduling through the second indication information. The following is an introduction in conjunction with Table 3.

[0134] Table 3: An example of the second indication information

[0135] Second Indication Information Content 00 No DCI 01 Downlink DCI (DL DCI) 10 Uplink DCI (UL DCI) 11 Downlink DCI + Uplink DCI (DL DCI + UL DCI)

[0136] In Table 3, when the value of the second indication information is 00, it may indicate the absence of DCI; when the value of the second indication information is 01, it may indicate the presence of DCI and it is a downlink DCI, and so on. It can be understood that Table 3 takes the second indication information as 2 bits as an example for illustration. Those skilled in the art can set the second indication information to 3 bits, 4 bits or more bits according to needs, and the present application does not make specific limitations. In addition, the correspondence between the values of the second indication information and the content is only shown exemplarily and does not constitute a limitation on the correspondence between the values of the second indication information and the indicated content. The second indication information may indicate the presence or absence of DCI and whether the DCI is for uplink scheduling and / or for downlink scheduling.

[0137] For another example, DCI skipping is also supported in the embodiments of the present application. Refer to Figure 6 , the first information may further indicate a first duration, which can be understood as the duration to be skipped when detecting DCI. In other words, the first information may further indicate the duration of DCI skipping. It can be understood that the first duration may be a period of time, or may be implemented by time slots or sub-time slots.

[0138] In the embodiments of the present application, in the carrier aggregation (CA) scenario, the first information may further indicate whether there is DCI for cross-carrier scheduling. For example, the first information may include a third indication information, and the third indication information may indicate whether there is DCI for cross-carrier scheduling. For instance, the third indication information may be a 1-bit indication information. When the value of the 1-bit indication information is 0, it indicates that there is no DCI for cross-carrier scheduling; when the value of the 1-bit indication information is 1, it indicates that there is DCI for cross-carrier scheduling. Vice versa, when the value of the 1-bit indication information is 1, it indicates that there is no DCI for cross-carrier scheduling; when the value of the 1-bit indication information is 0, it indicates that there is DCI for cross-carrier scheduling.

[0139] In one example, when the first information indicates that there is DCI, the first information may further indicate DCI candidate information, such as the detection location of the DCI. In a possible case, the first information may indicate the aggregation level. For example, if the first information indicates that the aggregation level is the first aggregation level, the terminal blindly detects at the candidate locations corresponding to the first aggregation level. For instance, if the first aggregation level is the aggregated level (AL)-2, and AL-2 corresponds to 6 candidate locations, the terminal may blindly detect the DCI at the 6 candidate locations corresponding to AL-2. It can be understood that the candidate locations in the embodiments of the present application may also be replaced with detection locations.

[0140] In another possible case, the first information may indicate the aggregation level range. For example, the aggregation levels may be grouped, and the first information may indicate the aggregation level group. For example, assume that AL-1 and AL-2 are aggregation level group 1, and AL-4 and AL-8 are aggregation level group 2. Then the first information may indicate aggregation level group 1 or indicate aggregation level group 2. Then the terminal may blindly detect the DCI at the candidate locations corresponding to the aggregation levels included in the aggregation level group indicated by the first information. For example, if the first information indicates aggregation level group 1, then the terminal may blindly detect the DCI at the candidate locations corresponding to AL-1 and the candidate locations corresponding to AL-2.

[0141] In another possible scenario, the first piece of information may indicate the aggregation level and the target detection location, and the target detection location may be part or all of the detection locations corresponding to the aggregation level indicated by the first piece of information. For example, the first piece of information may indicate AL2 and the index of the target detection location, assumed to be 5. Then the terminal can blindly detect DCI at the 5th candidate location among the 6 candidate locations corresponding to AL-2. It can be understood that the first piece of information indicating the target detection location can also be implemented through a bitmap. For example, the first piece of information indicates AL2 and "000010", then it can be considered that the target detection location is the 5th candidate location. Therefore, the terminal can blindly detect DCI at the 5th candidate location among the candidate locations corresponding to AL2.

[0142] Based on the following embodiments, the communication device provided in the embodiments of the present application will be introduced. Figure 7 It is a schematic block diagram of a communication device 700 provided in an embodiment of the present application. The communication device 700 can correspondingly implement the functions or steps implemented by the terminal or the base station in the above various method embodiments. The communication device may include a processing unit 710 and a transceiver unit 720. Optionally, it may further include a storage unit, and the storage unit may be used to store instructions (codes or programs) and / or data. The processing unit 710 and the transceiver unit 720 may be coupled to the storage unit. For example, the processing unit 710 may read the instructions (codes or programs) and / or data in the storage unit to implement the corresponding method. The above various units may be independently provided or partially or fully integrated.

[0143] Optionally, the above transceiver unit 720 may include a sending unit and a receiving unit. Among them, the sending unit may be used to perform all the sending operations performed by the communication device 700, and the receiving unit may be used to perform all the receiving operations performed by the communication device 700.

[0144] In some possible implementation manners, the communication device 700 can correspondingly implement the behaviors and functions of the terminal and the like in the above method embodiments. For example, the communication device 700 may be a terminal or a component (such as a chip or a circuit) applied to the terminal. The transceiver unit 720 may be used to perform Figure 4 all the receiving or sending operations performed by the terminal in the illustrated embodiments. For example Figure 4 S401 in the illustrated embodiments, and / or other processes for supporting the technologies described in this article; wherein, the processing unit 710 is used to perform all the operations other than the transceiver operations performed by the terminal in the embodiments illustrated as Figure 4 shown.

[0145] For example, a transceiver unit 720 is configured to receive first information, where the first information indicates a blind detection mode for downlink control information, and the blind detection mode includes blind detecting the downlink control information using a first module included in the communication device or blind detecting the downlink control information using a second module included in the communication device. A processing unit 710 is configured to activate the first module or the second module to detect the downlink control information based on the blind detection mode.

[0146] In some possible implementation manners, the communication device 700 can correspondingly implement the behaviors and functions of the base station in the foregoing method embodiments. For example, the communication device 700 can be a base station, or can be a component (such as a chip or a circuit) applied to the base station. The transceiver unit 720 can be used to perform Figure 4 all the receiving or sending operations performed by the base station in the embodiments shown. For example Figure 4 S401 in the embodiments shown, and / or other processes for supporting the technologies described in this article; wherein, the processing unit 710 is used to perform as Figure 4 all the operations performed by the base station in the embodiments shown except for the receiving and sending operations.

[0147] For example, a processing unit 710 is configured to determine first information, where the first information indicates a blind detection mode for downlink control information, and the blind detection mode includes blind detecting the downlink control information using a first module of the communication device or blind detecting the downlink control information using a second module of the communication device. A transceiver unit 720 is configured to send the first information to the communication device.

[0148] For the operations performed by the processing unit 710 and the transceiver unit 720, reference can be made to the relevant descriptions in the foregoing method embodiments.

[0149] It should be understood that the processing unit 710 in the embodiments of this application can be implemented by a processor or processor-related circuit components, and the transceiver unit 720 can be implemented by a transceiver or transceiver-related circuit components or a communication interface.

[0150] Based on the same concept, as Figure 8 shown, an embodiment of this application provides a communication device 800. The communication device 800 includes a processor 810. Optionally, the communication device 800 can further include a memory 820, configured to store instructions executed by the processor 810 or store input data required for the processor 810 to run the instructions or store data generated after the processor 810 runs the instructions. The processor 810 can implement the method shown in the foregoing method embodiments through the instructions stored in the memory 820.

[0151] Based on the same concept, as Figure 9As shown in the figure, an embodiment of the present application provides a communication device 900, which may be a chip or a chip system. Optionally, in the embodiment of the present application, the chip system may be composed of chips, or may include chips and other discrete devices.

[0152] The communication device 900 may include at least one processor 910, and the processor 910 is coupled to a memory. Optionally, the memory may be located inside or outside the device. For example, the communication device 900 may further include at least one memory 920. The memory 920 stores necessary computer programs, configuration information, computer programs or instructions, and / or data in any of the above embodiments; the processor 910 may execute the computer programs stored in the memory 920 to complete the methods in any of the above embodiments.

[0153] The coupling in the embodiment of the present application is an indirect coupling or communication connection between devices, units or modules, which may be electrical, mechanical or other forms, and is used for information interaction between devices, units or modules. The processor 910 may cooperate with the memory 920. In the embodiment of the present application, the specific connection medium between the transceiver 930, the processor 910 and the memory 920 is not limited.

[0154] The communication device 900 may further include a transceiver 930, and the communication device 900 may perform information interaction with other devices through the transceiver 930. The transceiver 930 may be a circuit, a bus, a transceiver or any other device that can be used for information interaction, or is called a signal transceiver unit. As Figure 9 shown, the transceiver 930 includes a transmitter 931, a receiver 932 and an antenna 933. In addition, when the communication device 900 is a chip-type device or circuit, the transceiver in the communication device 900 may also be an input / output circuit and / or a communication interface, which can input data (or receive data) and output data (or send data), and the processor is an integrated processor, a microprocessor or an integrated circuit, and the processor may determine the output data according to the input data.

[0155] In a possible implementation manner, the communication device 900 may be applied to a terminal. Specifically, the communication device 900 may be a terminal, or may be a device that can support the terminal to implement the functions of the terminal in any of the above embodiments. The memory 920 stores necessary computer programs, computer programs or instructions, and / or data for implementing the functions of the communication device in any of the above embodiments. The processor 910 may execute the computer programs stored in the memory 920 to complete the methods executed by the terminal in any of the above embodiments.

[0156] In a possible implementation, the communication device 900 can be applied to a base station. Specifically, the communication device 900 can be a base station or a device capable of supporting the base station to implement the functions of the base station in any of the above embodiments. The memory 920 stores the necessary computer programs, computer programs or instructions, and / or data for implementing the functions of the base station in any of the above embodiments. The processor 910 can execute the computer programs stored in the memory 920 to complete the methods executed by the base station in any of the above embodiments.

[0157] Since the communication device 900 provided in this embodiment can be applied to a terminal to complete the methods executed by the terminal, or can be applied to a base station to complete the methods executed by the above base station. Therefore, the technical effects that can be obtained can refer to the above method embodiments and will not be elaborated here.

[0158] In the embodiments of the present application, the processor can be a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field-programmable gate array or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, and can implement or execute the various methods, steps, and logic block diagrams disclosed in the embodiments of the present application. The general-purpose processor can be a microprocessor or any conventional processor, etc. The steps of the method disclosed in combination with the embodiments of the present application can be directly embodied as being executed by a hardware processor, or can be executed by a combination of hardware and software modules in the processor.

[0159] In the embodiments of the present application, the memory can be a non-volatile memory, such as a hard disk drive (HDD) or a solid-state drive (SSD), etc., and can also be a volatile memory, such as a random-access memory (RAM). The memory can also be any other medium that can be used to carry or store the desired program code in the form of instructions or data structures and can be accessed by a computer, but is not limited thereto. The memory in the embodiments of the present application can also be a circuit or any other device capable of implementing a storage function, for storing computer programs, computer programs or instructions, and / or data.

[0160] Based on the above embodiments, see Figure 10 , the embodiments of the present application further provide another communication device 10000, including: an input / output interface 1010 and a logic circuit 1020; the input / output interface 1010 is used to receive code instructions and transmit them to the logic circuit 1020; the logic circuit 1020 is used to run the code instructions to execute the methods executed by the terminal or the base station in any of the above embodiments.

[0161] Optionally, the input / output interface 1010 may be an interface on the chip, and the logic circuit 1020 may be one or more processors. Optionally, the one or more processors may be located inside the device or outside the device.

[0162] Hereinafter, the operations performed by the communication device when applied to a terminal or a base station will be described in detail.

[0163] In an alternative embodiment, the communication device 10000 may be applied to a terminal to perform the method executed by the terminal, specifically, for example, the method executed by the terminal in the foregoing Figure 4 illustrated embodiment.

[0164] For example, the input / output interface 1010 is configured to receive first information indicating a blind detection mode of downlink control information, where the blind detection mode includes blind detecting downlink control information using a first module included in the communication device or blind detecting downlink control information using a second module included in the communication device. The logic circuit 1020 is configured to activate the first module or the second module to detect downlink control information based on the blind detection mode.

[0165] Since the communication device 10000 provided in this embodiment can be applied to a terminal to complete the method executed by the terminal, the technical effects that can be obtained can refer to the foregoing method embodiment and will not be elaborated here.

[0166] In an alternative embodiment, the communication device 10000 may be applied to a base station to perform the method executed by the base station, specifically, for example, the method executed by the base station in the foregoing Figure 4 illustrated embodiment.

[0167] For example, the logic circuit 1020 is configured to determine first information indicating a blind detection mode of downlink control information, where the blind detection mode includes blind detecting downlink control information using a first module of the communication device or blind detecting downlink control information using a second module of the communication device. The input / output interface 1010 is configured to send the first information to the communication device.

[0168] Since the communication device 10000 provided in this embodiment can be applied to a base station to complete the method executed by the base station, the technical effects that can be obtained can refer to the foregoing method embodiment and will not be elaborated here.

[0169] Based on the above embodiments, an embodiment of the present application further provides a communication system. The communication system includes at least one communication device applied to a terminal and at least one communication device applied to a base station. The technical effects that can be obtained can refer to the foregoing method embodiment and will not be elaborated here.

[0170] Based on the above embodiments, an embodiment of the present application further provides a system. The communication system includes at least one base station and a terminal.

[0171] Based on the above embodiments, the embodiments of the present application further provide a computer-readable storage medium storing a computer program or instructions. When the instructions are executed, the method executed by the terminal or the method executed by the base station in any of the above embodiments is implemented. The computer-readable storage medium may include various media capable of storing program codes, such as USB flash drives, mobile hard disks, read-only memories, random access memories, magnetic disks, or optical discs.

[0172] To implement the functions of the above Figures 7 to 10 communication device, the embodiments of the present application further provide a chip including a processor for supporting the communication device to implement the functions involved in the terminal or the base station in the above method embodiments. In a possible design, the chip is connected to a memory or the chip includes a memory for storing the necessary computer programs or instructions and data of the communication device.

[0173] Those skilled in the art should understand that the embodiments of the present application can be provided as a method, a system, or a computer program product. Therefore, the present application can take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware aspects. Moreover, the present application can take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk memories, CD-ROMs, optical memories, etc.) containing computer-usable program codes.

[0174] The present application is described with reference to the flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or block in the flowcharts and / or block diagrams, and the combination of processes and / or blocks in the flowcharts and / or block diagrams, can be implemented by computer programs or instructions. These computer programs or instructions can be provided to the processors of general-purpose computers, special-purpose computers, embedded processors, or other programmable data processing devices to generate a machine, such that the instructions executed by the processors of the computer or other programmable data processing devices generate a device for implementing the functions specified in Figure 1 one process or multiple processes and / or blocks Figure 1 one block or multiple blocks.

[0175] These computer programs or instructions can also be stored in a computer-readable memory that can direct a computer or other programmable data processing device to work in a specific manner, such that the instructions stored in the computer-readable memory generate a manufactured product including an instruction device that implements the functions specified in Figure 1 one process or multiple processes and / or blocks Figure 1 one block or multiple blocks.

[0176] These computer programs or instructions can also be loaded onto a computer or other programmable data processing apparatus, so that a series of operation steps are performed on the computer or other programmable apparatus to generate a computer-implemented process, thereby providing instructions for implementing the steps of the function specified in one process or multiple processes and / or one block or multiple blocks in the process Figure 1 one process or multiple processes and / or blocks Figure 1 or steps of the function specified in one block or multiple blocks.

[0177] Obviously, those skilled in the art can make various changes and modifications to the embodiments of the present application without departing from the scope of the embodiments of the present application. Thus, if these modifications and variations of the embodiments of the present application fall within the scope of the claims of the present application and their equivalent technologies, the present application also intends to include these changes and modifications.

Claims

1. A method for detecting downlink control information, characterized in that, Applied to a communication device, the communication device includes a first module and a second module, and the power consumption of the first module is lower than that of the second module. The method includes: Receiving first information, where the first information indicates a blind detection mode of downlink control information, and the blind detection mode includes blindly detecting the downlink control information using the first module or blindly detecting the downlink control information using the second module; Based on the blind detection mode, activating the first module or the second module to detect the downlink control information.

2. The method according to claim 1, characterized in that, The first information is carried in a low-power wake-up signal, or the first information is carried in radio resource control signaling.

3. The method according to claim 1 or 2, characterized in that, Further includes: The first information indicates using the second module to blindly detect the downlink control information; The first information further includes a first condition, and the first condition is used to switch from blindly detecting the downlink control information using the second module to blindly detecting the downlink control information based on the first module.

4. The method according to any one of claims 1 to 3, characterized in that, The downlink control information includes second information and third information, the first information indicates the blind detection mode of the second information, and the second information and the third information do not overlap; Based on the blind detection mode, detecting the downlink control information includes: Based on the blind detection mode, detecting the second information.

5. The method according to claim 4, characterized in that, The second information further includes one or more of the following: The time-frequency resource of the third information or the modulation and coding strategy of the third information.

6. The method according to claim 4 or 5, characterized in that, The second information is carried on a first downlink control channel, and the third information is carried on a second downlink control channel; or, the second information is carried on a downlink control channel, and the third information is carried on a downlink data channel.

7. The method according to any one of claims 1 to 6, characterized in that, The first information further indicates whether the downlink control information exists. Based on the blind detection mode, detecting the downlink control information includes: When the first information indicates the existence of the downlink control information, detecting the downlink control information based on the blind detection mode.

8. The method according to any one of claims 1 to 7, characterized in that, The first information further indicates that the downlink control information schedules uplink transmission and / or the downlink control information schedules downlink transmission.

9. The method according to any one of claims 1 to 8, characterized in that, The first information further indicates a first duration, and the first duration is the duration to be skipped when detecting the downlink control information.

10. The method according to any one of claims 1 to 9, characterized in that, The first information further indicates whether the downlink control information is cross-carrier scheduled downlink control information.

11. The method according to any one of claims 1 to 10, characterized in that, The first information further indicates an aggregation level or an aggregation level group; where the aggregation level group includes one or more aggregation levels; Based on the blind detection mode, detecting the downlink control information includes: Detecting the downlink control information at the detection position corresponding to the aggregation level or at the detection position corresponding to the aggregation level group.

12. The method according to any one of claims 1 to 10, characterized in that, The first information further indicates an aggregation level and a target detection position, and the target detection position is part or all of the detection positions corresponding to the aggregation level indicated by the first information; Based on the blind detection mode, detecting the downlink control information includes: At the target detection position, detecting the downlink control information based on the blind detection mode.

13. A method for detecting downlink control information, characterized in that, Includes: Determine first information, where the first information indicates a blind detection manner of downlink control information, and the blind detection manner includes blind detecting the downlink control information by using a first module of a communication device or blind detecting the downlink control information by using a second module of the communication device; Send the first information to the communication device.

14. The method according to claim 13, wherein, The first information is carried in a low-power wake-up signal, or the first information is carried in radio resource control signaling.

15. The method according to claim 13 or 14, wherein, The first information further includes a first condition, and the first condition is used to indicate a switch from blind detecting the downlink control information by using the second module to blind detecting the downlink control information based on the first module.

16. The method according to any one of claims 13 to 15, wherein, The downlink control information includes second information and third information, the first information indicates a blind detection manner of the second information, and the second information and the third information do not overlap; The first information indicates a blind detection manner of downlink control information, including: The first information indicates a blind detection manner of the second information.

17. The method according to claim 16, wherein, The second information further includes one or more of the following: The time-frequency resource of the third information or the modulation and coding strategy of the third information.

18. The method according to claim 16 or 17, wherein, The second information is carried on a first downlink control channel, and the third information is carried on a second downlink control channel; or, the second information is carried on a downlink control channel, and the third information is carried on a downlink data channel.

19. The method according to any one of claims 13 to 18, wherein, The first information further indicates whether the downlink control information exists.

20. The method according to any one of claims 13 to 19, wherein, The first information further indicates that the downlink control information schedules uplink transmission and / or the downlink control information schedules downlink transmission.

21. The method according to any one of claims 13 to 20, wherein, The first information further indicates a first duration, and the first duration is a duration to be skipped when detecting the downlink control information.

22. The method according to any one of claims 13 to 21, wherein, The first information further indicates whether the downlink control information is cross-carrier scheduled downlink control information.

23. The method according to any one of claims 13 to 22, wherein, The first information further indicates an aggregation level or an aggregation level group; where the aggregation level group includes one or more aggregation levels, the aggregation level corresponds to a detection position of the downlink control information, or the aggregation level group corresponds to a detection position of the downlink control information.

24. The method according to any one of claims 13 to 23, wherein, The first information further indicates an aggregation level and a target detection position, and the target detection position is part or all of the detection positions corresponding to the aggregation level indicated by the first information.

25. A communication device, wherein, Include a unit for executing the method according to any one of claims 1 to 12, or include a unit for executing the method according to any one of claims 13 to 24.

26. A computer-readable storage medium, wherein, The computer-readable storage medium stores computer-executable instructions, and when the computer-executable instructions are called by an electronic device, the electronic device is caused to execute the method according to any one of claims 1 to 12, or the electronic device is caused to execute the method according to any one of claims 13 to 24.

27. A communication system, wherein, Include a device for executing the method according to any one of claims 11 to 12 and a device for executing the method according to any one of claims 13 to 24.

28. A chip system, wherein, The chip system includes: A communication interface; A processor, configured to call and execute the instructions via the communication interface, such that a device installed with the chip system executes the method according to any one of claims 1 to 12, or such that a device installed with the chip system executes the method according to any one of claims 13 to 24.

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