Downlink control information detection method and device

Abstract

The present application relates to the technical field of wireless communications, and provides a downlink control information detection method and device, aiming to reduce energy consumption of blind detection of downlink control information. In the method, a first communication device comprises a first module and a second module, wherein the power consumption of the first module is lower than that of the second module. The first communication device receives first information, wherein the first information indicates a blind detection mode for downlink control information, and the blind detection mode comprises using the first module to blindly detect downlink control information or using the second module to blindly detect downlink control information. The first communication device detects downlink control information on the basis of the blind detection mode. According to the solution, by means of the blind detection mode indicated by a network device, a terminal device can blindly detect downlink control information on the basis of the first module, or blindly detect downlink control information on the basis of the second module. Compared with the method in the related art that a first module wakes up a second module to blindly detect downlink control information, the number of times of waking up the second module can be reduced, and frequent wake-up of the second module can be avoided, thereby achieving the purpose of energy saving.

Description

A method and device for detecting downlink control information

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office of the People's Republic of China on December 15, 2023, with application number 202311732886.4 and application name "A method and device for detecting downlink control information", the entire contents of which are incorporated by reference into this application. Technical Field

[0003] The present application relates to the field of wireless communication technology, and in particular to a method and device for detecting downlink control information. Background Art

[0004] For connected terminals, blind detection of the physical downlink control channel (PDCCH) is essential for obtaining uplink and downlink scheduling. Because there's no way to determine the location of configured time-frequency resources before PDCCH blind detection, terminals must perform blind detection based on several pre-set control resource sets (CORESETs) using predefined rules. This results in a high number of PDCCH blind detections, and their power consumption contributes significantly to the terminal's overall energy consumption. Therefore, optimization of terminal PDCCH blind detection has been a key focus in cellular network evolution.

[0005] Summary of the Invention

[0006] The present application provides a method and apparatus for detecting downlink control information, in order to reduce energy consumption in blindly detecting downlink control information.

[0007] In a first aspect, a method for detecting downlink control information is provided. The method can be performed by a first communication device or a chip / chip system. The first communication device can be a network device or a terminal device. In the method, the first communication device includes a first module and a second module, and the power consumption of the first module is lower than the power consumption of the second module. The first communication device receives first information, and the first information indicates a blind detection method for the downlink control information, where the blind detection method includes blindly detecting the downlink control information using the first module or blindly detecting the downlink control information using the second module. The first communication device detects the downlink control information based on the blind detection method.

[0008] Based on this solution, the network device can indicate the blind detection method of the downlink control information to the terminal device, and the terminal device can blindly detect the downlink control information based on the first module or the second module according to the instruction of the blind detection method. Compared with the related technology in which the first module wakes up the second module to blindly detect the downlink control information, the number of times the second module is woken up can be reduced, and frequent waking up of the second module can be avoided, thereby achieving the purpose of energy saving.

[0009] In one 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. Based on the above solution, the low-power wake-up signal or radio resource control signaling can indicate a blind detection mode for downlink control information. Indicating the blind detection mode in the low-power wake-up signal can be received by the first module, thereby further reducing energy consumption of the terminal device.

[0010] In one possible implementation, the first information indicates the use of the second module for blind detection of downlink control information. The first information also 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 by the first module. Based on this solution, by controlling the switching of the blind detection mode by the first condition, energy consumption caused by the second module blindly detecting downlink control information for a long time can be avoided.

[0011] In a possible implementation, the downlink control information includes second information and third information, the first information indicates a blind detection method for 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.

[0012] Based on this solution, the downlink control information may be multi-level downlink control information, and the first information may indicate the blind landing mode of the first-level downlink control information. The multi-level downlink control information may reduce the decoding delay of the downlink control information.

[0013] In a possible implementation manner, the second information further includes one or more of the following: third information time-frequency resources or a modulation and coding strategy of the third information.

[0014] Based on this solution, the time-frequency resources or modulation and coding strategy of the next level downlink control information is indicated by the first level downlink control information, which can improve flexibility compared with the configuration by radio resource control signaling.

[0015] 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.

[0016] Based on this solution, the third information and the second information can be carried in different downlink control channels, or the second information can be carried in the downlink control channel and the third information can be carried in the downlink data channel.

[0017] In a possible implementation manner, when the first information indicates that downlink control information exists, the first communication device detects the downlink control information based on a blind detection method.

[0018] 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 may indicate whether the downlink control information is downlink scheduled control information or uplink scheduled control information.

[0019] In one possible implementation, the first information further indicates a first duration, which is the duration of a jump required when detecting downlink control information. Based on this solution, the first information can indicate the first duration, that is, downlink control information jumping can be supported to increase the blind detection period and reduce energy consumption of the terminal device.

[0020] In a possible implementation manner, the first information further indicates whether the downlink control information is downlink control information scheduled across carriers.

[0021] In one 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, and the downlink control information is detected at a detection position corresponding to the aggregation level or at a detection position corresponding to the aggregation level group.

[0022] In one 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. At the target detection position, downlink control information is detected based on a blind detection method.

[0023] Based on the above solution, the first information can indicate information such as the aggregation level or aggregation level group, so that the detection position of the blind detection can be determined during blind detection, further reducing the energy consumption of the terminal device.

[0024] In a second aspect, a method for detecting downlink control information is provided. The method can be performed by a second communication device or a chip / chip system. The second communication device can be a network device or a terminal device. The second communication device determines first information, where the first information indicates a blind detection method for the downlink control information, where the blind detection method 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 second communication device sends the first information to the communication device.

[0025] In a possible implementation manner, the first information is carried in a low-power wake-up signal, or the first information is carried in a radio resource control signaling.

[0026] In a possible implementation, the first information further includes a first condition, and the first condition is used to indicate switching from blind detection of downlink control information based on the second module to blind detection of downlink control information based on the first module.

[0027] In a possible implementation, the downlink control information includes second information and third information, the first information indicates a blind detection mode of the second information, and the second information and the third information do not overlap. The first information indicates a blind detection mode of the second information.

[0028] In a possible implementation manner, the second information further includes one or more of the following: third information time-frequency resources or a modulation and coding strategy of the third information.

[0029] 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.

[0030] In a possible implementation manner, the first information further indicates whether the downlink control information exists.

[0031] In a possible implementation manner, the first information further indicates that the downlink control information schedules uplink transmission and / or the downlink control information schedules downlink transmission.

[0032] In a possible implementation, the first information further indicates a first duration, where the first duration is the duration required to jump when detecting downlink control information.

[0033] In a possible implementation manner, the first information further indicates whether the downlink control information is downlink control information scheduled across carriers.

[0034] 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, and 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.

[0035] 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.

[0036] According to a third aspect, a communication device is provided, comprising: a processing unit and a transceiver unit. The transceiver unit is configured to receive first information indicating a blind detection method for downlink control information, wherein the blind detection method 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 method.

[0037] In a possible implementation manner, the first information is carried in a low-power wake-up signal, or the first information is carried in a radio resource control signaling.

[0038] In a possible implementation, the first information indicates that the second module is used to blindly detect downlink control information. The first information also includes a first condition, which is used to switch from blindly detecting downlink control information with the second module to blindly detecting downlink control information with the first module.

[0039] In one possible implementation, the downlink control information includes second information and third information, the first information indicates a blind detection method for 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 method.

[0040] In a possible implementation manner, the second information further includes one or more of the following: third information time-frequency resources or a modulation and coding strategy of the third information.

[0041] 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.

[0042] In a possible implementation, when the first information indicates that the downlink control information exists, the processing unit is specifically configured to detect the downlink control information based on a blind detection method.

[0043] In a possible implementation manner, the first information further indicates that the downlink control information schedules uplink transmission and / or the downlink control information schedules downlink transmission.

[0044] In a possible implementation, the first information further indicates a first duration, where the first duration is the duration required to jump when detecting downlink control information.

[0045] In a possible implementation manner, the first information further indicates whether the downlink control information is downlink control information scheduled across carriers.

[0046] In one 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 a detection position corresponding to the aggregation level or at a detection position corresponding to the aggregation level group.

[0047] In one possible implementation, the first information further indicates an aggregation level and a target detection location, where the target detection location is part or all of the detection locations 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 location based on a blind detection method.

[0048] In a fourth aspect, a communication device is provided, comprising a processing unit and a transceiver unit. The processing unit is configured to determine first information, where the first information indicates a blind detection method for downlink control information, including blind detection of the downlink control information using a first module of the communication device or blind detection of 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.

[0049] In a possible implementation manner, the first information is carried in a low-power wake-up signal, or the first information is carried in a radio resource control signaling.

[0050] In a possible implementation, the first information further includes a first condition, and the first condition is used to indicate switching from blind detection of downlink control information based on the second module to blind detection of downlink control information based on the first module.

[0051] In a possible implementation, the downlink control information includes second information and third information, the first information indicates a blind detection mode of the second information, and the second information and the third information do not overlap. The first information indicates a blind detection mode of the second information.

[0052] In a possible implementation manner, the second information further includes one or more of the following: third information time-frequency resources or a modulation and coding strategy of the third information.

[0053] 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.

[0054] In a possible implementation manner, the first information further indicates whether the downlink control information exists.

[0055] In a possible implementation manner, the first information further indicates that the downlink control information schedules uplink transmission and / or the downlink control information schedules downlink transmission.

[0056] In a possible implementation, the first information further indicates a first duration, where the first duration is the duration required to jump when detecting downlink control information.

[0057] In a possible implementation manner, the first information further indicates whether the downlink control information is downlink control information scheduled across carriers.

[0058] 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, and 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.

[0059] 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.

[0060] In a fifth aspect, the present application provides a communication device comprising a processor coupled to a memory, the memory being configured to store computer programs or instructions, and the processor being configured to execute the computer programs or instructions to perform the respective implementation methods of the first and second aspects described above. The memory may be located within or outside the device. The number of processors may be one or more.

[0061] In a sixth aspect, the present application provides a communication device, comprising: a processor and an interface circuit, the interface circuit being used to communicate with other devices, and the processor being used to implement the various methods of the first and second aspects above.

[0062] In a seventh aspect, a communication device is provided, which includes a logic circuit and an input / output interface.

[0063] In an eighth aspect, the present application provides a communication system, comprising: a first communication device and a second communication device for executing the implementation methods of the first and second aspects above.

[0064] In a ninth aspect, the present application also provides a chip system, comprising: a processor for executing the various implementation methods of the first and second aspects above.

[0065] In a tenth aspect, the present application also provides a computer program product, comprising computer execution instructions, which, when executed on a computer, enable the implementation methods of the first and second aspects to be executed.

[0066] In the eleventh aspect, the present application also provides a computer-readable storage medium, in which a computer program or instruction is stored. When the instruction is executed on a computer, the implementation methods of the first and second aspects mentioned above are implemented.

[0067] The technical effects achieved in the above-mentioned second to eleventh aspects can refer to the technical effects in the first aspect and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0068] FIG1 is a schematic diagram of a communication system provided in an embodiment of the present application;

[0069] FIG2 is a schematic block diagram of a terminal provided in an embodiment of the present application;

[0070] FIG3A is a schematic diagram showing a WUS indicating whether to detect a PDCCH;

[0071] FIG3B is a schematic diagram of an SCell not monitoring PDCCH;

[0072] FIG3C is a schematic diagram of PDCCH skipping;

[0073] FIG3D is a schematic diagram of a search space;

[0074] FIG4 is an exemplary flow chart of a method for detecting downlink control information provided in an embodiment of the present application;

[0075] FIG5A is a schematic diagram of a two-stage DCI provided in an embodiment of the present application;

[0076] FIG5B is a schematic diagram of another two-stage DCI provided in an embodiment of the present application;

[0077] FIG6 is a schematic diagram of a DCI jump provided in an embodiment of the present application;

[0078] FIG7 is a schematic diagram of a communication device provided in an embodiment of the present application;

[0079] FIG8 is a schematic diagram of another communication device provided in an embodiment of the present application;

[0080] FIG9 is a schematic diagram of another communication device provided in an embodiment of the present application;

[0081] FIG10 is a schematic diagram of another communication device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0082] In order to facilitate understanding of the technical solutions provided by the embodiments of the present application, the technical terms involved in the embodiments of the present application are explained and illustrated below.

[0083] 1) Low power wake up signal (LP-WUS), which is used in multiple low power communication protocols, such as long range radio (LoRa), Bluetooth or wireless fidelity (WiFi). LP=WUS allows the design and implementation of low power receivers, which helps reduce device power consumption. LP-WUS is very similar to WUS. WUS is based on the traditional Zadoff-Chu (ZC) sequence and downlink control information (DCI) in formats 2-6 in the physical downlink control channel (PDCCH). If WUS is detected, the device will continue to decode the paging message, otherwise it will return to sleep and wait for the next opportunity to receive WUS.

[0084] The technical solutions of the embodiments of the present 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) systems, Worldwide Interoperability for Microwave Access (WiMAX) communication systems, and fifth generation communication systems (5G) and 5G th generation, 5G), and next-generation wireless communication systems, such as 6G, are not restricted here.

[0085] FIG1 is a schematic diagram of the architecture of a communication system 1000 used in an embodiment of the present application. As shown in FIG1 , the communication system includes a wireless access network 100. The wireless access network 100 may include at least one network device (such as 110a and / or 110b in FIG1 ) and may also include at least one terminal device (such as at least one of 120a-120j in FIG1 ). The terminal device is connected to the access network device wirelessly, and the access network device is connected to the core network device wirelessly or by wire. Terminal devices and network devices may be connected to each other by wire or by wireless. FIG1 is only a schematic diagram, and the communication system may also include other network devices, such as wireless relay devices and wireless backhaul devices, which are not shown in FIG1 .

[0086] A network device is a network-side device with wireless transceiver capabilities. A network device can be a device in a radio access network (RAN) that provides wireless communication capabilities for terminal devices, and is called a RAN device. For example, a network device can be a base station, an evolved NodeB (eNodeB), a transmission reception point (TRP), a next-generation NodeB (gNB) in a fifth-generation (5G) mobile communication system, a next-generation base station in a sixth-generation (6G) mobile communication system, a base station in a future mobile communication system, or an access node in a WiFi system. It can also be a module or unit that performs some of the functions of a base station, such as a centralized unit (CU) or a distributed unit (DU). The CU here completes the functions of the radio resource control protocol and the packet data convergence protocol (PDCP) of the base station, and can 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 can also complete the functions of part of the physical layer or all of the physical layer. For the specific description of the above-mentioned protocol layers, please refer to the relevant technical specifications of the 3rd Generation Partnership Project (3GPP). The network device can be a macro base station (such as 110a in Figure 1), a micro base station or an indoor station (such as 110b in Figure 1), a relay node or a donor node, etc. The embodiments of the present application do not limit the specific technology and specific device form adopted by the network device.

[0087] In another possible scenario, multiple RAN nodes collaborate to assist the terminal in achieving wireless access, and different RAN nodes implement part of the functions of the base station respectively. For example, the RAN node can be a CU, DU, CU-control plane (CP), CU-user plane (UP), or radio unit (RU). The CU and DU can be set separately, or they can be included in the same network element, such as a baseband unit (BBU). The RU can be included in a radio frequency device or radio frequency unit, such as a remote radio unit (RRU), an active antenna unit (AAU), or a remote radio head (RRH).

[0088] In different systems, CU (or CU-CP and CU-UP), DU or RU may also have different names, but those skilled in the art can understand their meanings. For example, in an open radio access network (ORAN) system, CU may also be called O-CU (open CU), DU may also be called O-DU, CU-CP may also be called O-CU-CP, CU-UP may also be called O-CU-UP, and RU may also be called O-RU. For the convenience of description, this application takes CU, CU-CP, CU-UP, DU and RU as examples for description. Any unit of 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.

[0089] A terminal device is a user-side device with wireless transceiver capabilities. A terminal device may also be referred to as user equipment (UE), a mobile station, a mobile terminal, etc. Terminal devices can be widely used 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 wearable, smart transportation, smart city, etc. The terminal device may be a mobile phone, a tablet computer, a computer with wireless transceiver capabilities, a wearable device, a vehicle, a drone, a helicopter, an airplane, a ship, a robot, a robotic arm, a smart home appliance, etc. The embodiments of the present application do not limit the specific technology and specific device form adopted by the terminal device.

[0090] Network devices and terminal devices can be fixed or mobile. They can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; on water; and in the air on aircraft, balloons, and satellites. The embodiments of this application do not limit the application scenarios of network devices and terminal devices.

[0091] The roles of network devices and terminal devices can be relative. For example, the helicopter or drone 120i in Figure 1 can be configured as a mobile network device. To terminal devices 120j accessing the wireless access network 100 via 120i, terminal device 120i is a network device. However, to network device 110a, 120i is a terminal device, meaning that communication between 110a and 120i occurs via a wireless air interface protocol. Of course, communication between 110a and 120i can also occur via an interface protocol between network devices. In this case, 120i is also a network device relative to 110a. Therefore, both network devices and terminal devices can be collectively referred to as communication devices. 110a and 110b in Figure 1 can be referred to as communication devices with network device functionality, while 120a-120j in Figure 1 can be referred to as communication devices with terminal device functionality.

[0092] In the embodiments 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 by a control subsystem that includes the network device function. The control subsystem that includes the network device function here may be a control center in the above-mentioned 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 by a device that includes the terminal device function. In the following, the example in which the terminal device function is performed by the terminal and the network device function is performed by the base station is described.

[0093] With the development of 5G technology, 5G networks are placing increasingly higher demands on terminal capabilities. This increased demand for terminal capabilities necessitates a corresponding increase in terminal hardware, which inevitably increases terminal power consumption. Compared to LTE terminals, 5G terminals support a maximum power of 29dBm. Under typical services, such as comprehensive web browsing, instant messaging, gaming, or food consumption, 5G terminal communication power consumption increases by an average of over 200% compared to LTE terminals. Terminal battery life is a crucial aspect of user experience and impacts the suitability of 5G terminals or services. Therefore, ensuring the battery life of 5G terminals faces significant challenges, and research on how to reduce 5G terminal power consumption is key to addressing this issue.

[0094] Referring to Figure 2, the terminal may include a low power wake up radio (LR) and a main radio (MR). It will be understood that the LR and MR may be integrated as logical function modules on the same processor (chip), or the LR and MR may be independent processors (chips). The power consumption of the LR is lower than that of the MR. In another example, the bandwidth of the LR is also lower than that of the MR. It should be noted that MR and LR are shown only as exemplary names. The LR may also be referred to as an auxiliary module and the MR may also be referred to as a main module. This application does not make specific limitations. In the embodiment of the present application, the LR is taken as the first module and the MR is taken as the second module as an example for explanation.

[0095] For connected terminals, blind detection of the physical downlink control channel (PDCCH) is essential for obtaining uplink and downlink scheduling. Because there's no way to determine the location of configured time-frequency resources before PDCCH blind detection, terminals must perform blind detection based on several pre-set control resource sets (CORESETs) using predefined rules. This results in a high number of PDCCH blind detections, and their power consumption contributes significantly to the terminal's overall energy consumption. Therefore, optimization of terminal PDCCH blind detection has been a key focus in cellular network evolution.

[0096] In Release 15, a PDCCH monitoring occasion was designed. The high-order 4 bits of the remaining minimum system information (RMSI) (PDCCH-Config) indicate the common search space, while the low-order 4 bits indicate the PDCCH monitoring occasion, thereby reducing PDCCH indication overhead. Furthermore, after the terminal is configured with a discontinuous reception (DRX) cycle, it does not detect PDCCH during sleep periods, ensuring that the terminal remains in sleep mode to the greatest extent possible and achieving energy savings.

[0097] Referring to Figure 3A, in R16, a WUS-based DRX mechanism is designed, which uses WUS to carry whether the terminal needs to be awakened the next time it is activated. At the same time, referring to Figure 3B, for cross-carrier scheduling scenarios, it is possible to dynamically activate the PDCCH blind detection function of which secondary cells (SCells). If not needed, the PDCCH detection of the neighboring cells is turned off. In R17, PDCCH skipping is designed to indicate that PDCCH blind detection can be skipped for a period of time, which is equivalent to increasing the period of PDCCH blind detection and effectively reducing terminal energy consumption, as shown in Figure 3C. At the same time, search space set group (SSSG) switching is also designed, which allows the terminal to switch between SSSGs in different monitoring periods as needed, as shown in Figure 3D.

[0098] In R18, the 3rd generation partnership project (3GPP) conducted research on low power (LP) wake-up signals (WUS) with the aim of evaluating the potential for reducing power consumption in 5G terminals equipped with low LR. Generally speaking, even if a 5G terminal does not send or receive any data, it consumes tens of milliwatts of power, which is called idle power consumption. This idle power consumption is caused by the fact that the 5G terminal must periodically measure and detect potential LP-WUS. Among them, LR will periodically measure and detect LP-WUS, and MR can be turned off when LR is active and searching for potential LP-WUS signals. LR can wake up MR to send and receive data when LP-WUS is detected.

[0099] However, despite the various optimization measures introduced in NR, the main energy consumption for connected terminals still comes from PDCCH blind detection. Further research is needed to reduce the energy consumption of PDCCH blind detection.

[0100] In view of this, an embodiment of the present application provides a method for detecting downlink control information. In this method, the base station indicates a blind detection method for downlink control information through first information. For example, the blind detection method includes blind detection of downlink control information based on the first module or blind detection of downlink control information based on the second module. Based on the blind detection method, the terminal activates the first module or the second module to blindly detect downlink control information. Based on this scheme, the base station can indicate the blind detection method of the downlink control information to the terminal, and the terminal can blindly detect the downlink control information based on the first module or the second module according to the indication of the blind detection method. Compared with the related art in which the LR wakes up the MR to blindly detect the downlink control information, the number of times the MR is woken up can be reduced, and frequent waking up of the MR can be avoided, thereby achieving the purpose of energy saving.

[0101] Referring to Figure 4, an exemplary flow chart of a method for detecting downlink control information provided in an embodiment of the present application may include the following operations. In the embodiment shown in Figure 4, a first communication device may include a first module and a second module, wherein the power consumption of the first module is lower than that of the second module. In the embodiment shown in Figure 4, the first communication device is a terminal and the second communication device is a base station.

[0102] S401: The base station sends first information to the terminal.

[0103] Correspondingly, the terminal receives the first information from the base station.

[0104] Among them, the first information can indicate a blind detection method of downlink control information, and this article uses the downlink control information as DCI as an example for explanation. For example, the blind detection method may include blind detection of DCI based on the second module. For another example, the blind detection method may include blind detection of DCI based on the first module, because the energy consumption of the terminal can be reduced by blind detection of DCI by the first module with lower power. Compared with blind detection of DCI based on the second module, when blind detection of DCI based on the first module is performed, the first information can carry less information and adopt a more streamlined indication.

[0105] S402: The terminal activates the first module or the second module to detect DCI.

[0106] For example, if the first information indicates that the blind detection method of DCI includes blind detection of DCI based on the second module, the terminal can activate (active) or wake up (wake up) or turn on the second module blind detection DCI. For another example, if the first information indicates that the blind detection method of DCI includes blind detection of DCI based on the first module, the terminal can activate or wake up or turn on the first module blind detection DCI.

[0107] In one possible scenario, the first information may be carried in a low-power wake-up signal, which is described below using the low-power wake-up signal being LP-WUS as an example. For example, LP-WUS may include first information indicating the blind detection method of DCI. Exemplarily, the first information may be 1-bit indication information. When the value of the first information is 0, the blind detection method of the DCI includes blind detection of DCI based on the first module. When the value of the first information is 1, the blind detection method of the DCI includes blind detection of DCI based on the second module. Conversely, when the value of the first information is 1, the blind detection method of the DCI includes blind detection of DCI based on the first module. When the value of the first information is 0, the blind detection method of the DCI includes blind detection of DCI based on the second module.

[0108] In another possible scenario, the first information may be carried in radio resource control (RRC) signaling, such as RRC connected configuration or RRC reconfiguration, etc., which is not specifically limited in this application. For connected terminals, RRC signaling can configure the blind detection mode of DCI, such as blind detection of DCI based on the first module, or blind detection of DCI based on the second module. Optionally, RRC signaling can provide two configurations, one of which is configured as a first blind detection mode, and the other is configured as a default configuration. When the first condition is met, the first blind detection mode can be switched to the second blind detection mode. For example, RRC signaling can configure the first blind detection mode to be based on blind detection of DCI based on the second module. When the first condition is met, the terminal can activate the first module and blindly detect DCI based on the first module. In one example, the first condition may include that the second module does not detect DCI within a period of time. It should be noted that a period of time can be a duration, or can also be implemented through a time slot, a sub-time slot, etc. For example, if the second module does not detect DCI within N consecutive time slots, the terminal may activate the first module to perform blind detection of DCI based on the first module.

[0109] It is understandable that the first condition may be indicated by the base station or may be predefined by a protocol. If indicated by the base station, the first condition may be indicated via RRC signaling.

[0110] In one possible implementation, the DCI involved in the embodiments of the present application may be single-stage DCI, in which all DCI content is transmitted in a single control channel, such as a PDCCH. One of the main advantages of single-stage 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, single-stage DCI may be beneficial in terms of reliability, because once a DCI is detected, the data can be decoded, and single-stage DCI is generally more strongly protected than the data.

[0111] In another possible implementation, the DCI involved in the embodiments of the present application may be multi-level DCI. For example, the information included in one DCI may be divided into two DCIs or multiple DCIs for transmission. If the terminal needs to change the Numerology used for data decoding (Numerology is related to the subcarrier spacing and / or cyclic prefix CP length) or adjust the bandwidth used for data reception, it is desirable to have a very short delay to decode the DCI. If two-level DCI is adopted, with a potentially smaller bandwidth on the first-level DCI and the first-level DCI 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 data used for bandwidth / Numerology adaptation can be minimized. Second, if the resource location of the control channel is quite fixed, or the maximum size of the resource is not enough to meet the required control channel capacity, more control channel resources can be accommodated by making the first-level DCI size smaller and placing the DCI content in the second-level DCI. Optionally, single-level DCI and multi-level DCI can coexist. For example, single-level DCI or multi-level DCI can be selected for transmission according to different scenarios.

[0112] The following describes a method for blindly detecting DCI by a terminal through a first module and a second module when the DCI involved in an embodiment of the present application is a two-level DCI.

[0113] In one possible scenario, the DCI may include second information and third information, and the second information and the third information are not the same or do not overlap. In this article, the second information can be understood as the first-level DCI, and the third information can be understood as the second-level DCI. The first-level DCI can be carried in the PDCCH, and the second-level DCI can be carried in different resources in the same PDCCH as the first-level DCI, or the second-level DCI can be carried in different channels from the first-level DCI, such as PDSCH or different PDCCHs. For example, the first-level DCI can be carried in the first PDCCH, and the second-level DCI can be carried in the second PDCCH. For another example, the first-level DCI can be carried on the first time-frequency resource in the first PDCCH, and the second-level DCI can be carried on the second time-frequency resource in the first PDCCH. For another example, the first-level DCI can be carried in the PDCCH, and the second-level DCI can be carried in the PDSCH.

[0114] In one example, when the first-level DCI is carried in the first PDCCH and the second-level DCI is carried in the second PDCCH, the resources occupied by the second-level DCI, such as time domain resources and / or time-frequency resources, can be indicated by higher-layer signaling, the first-level DCI, or the LP-WUS, as shown in FIG5A . It will be appreciated that when slot and mini-slot scheduling are multiplexed, the first-level DCI or the first information can indicate the resources occupied by the second-level DCI. In other words, the first-level DCI or the first information can indicate the resources of the second-level DCI used for mini-slot scheduling.

[0115] In another example, when the first-level DCI is carried in the PDCCH and the second-level DCI is carried in the PDSCH, the resources occupied by the second-level DCI, such as time domain resources and / or frequency domain resources, can 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 relative to the resources occupied by the data carried in the PDSCH can be predefined. Optionally, since the second-level DCI is carried in the PDSCH, and the PDSCH also carries data, the demodulation reference signal (DMRS) used for data demodulation can also be used for demodulation of the second-level DCI.

[0116] Optionally, the base station may indicate through the first information whether the DMRS configuration used by the PDCCH and PDSCH can be shared, such as whether the quasi co-location (QCL) relationship and channel measurement results can be shared. If the first information indicates that the DMRS configuration 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. The DMRS configuration may be indicated by RRC signaling.

[0117] The following describes how the resources occupied by the second-level DCI are indicated by the first information. The first information may indicate one or more of the time domain resources or frequency domain resources occupied by the second-level DCI.

[0118] In one possible scenario, the first information may indicate the frequency domain resources of the second-level DCI by using a resource block group (RBG). A larger RBG size may be configured to reduce the RBG bit overhead. This is described below in conjunction with Table 1.

[0119] Table 1: An example of an RBG

[0120] Table 1 shows an example of RBGs in the related art. When the BWP size is 1 to 36, Configuration 1 can indicate that the RBG size is 2 RBs. Then, when the bandwidth part (Wandwidth part, BWP) size is 1 to 36, there are a maximum of 18 RBGs, that is, 18 bits are required to indicate the BWP bandwidth. For example, the indication can be "100000000000000000" to indicate that 2 RBs are activated for communication. Similarly, when the BWP size is 37 to 72, Configuration 1 can indicate that the RBG size is 4 RBs. Then, there are a maximum of 18 RBGs in the BWP, that is, 18 bits are required to indicate the BWP bandwidth. For example, the indication can be "1000000000000000000" to indicate that 4 RBs are activated for communication, and so on.

[0121] Referring to Table 2, a larger RBG size can be defined in the embodiment of the present application, that is, one RBG can contain more RBs, and then the BWP can include fewer RBGs, thereby reducing the bit overhead of the RBG.

[0122] Table 2: An example of an RBG

[0123] In Table 2, when the BWP size is 1 to 36, Configuration X can indicate that the RBG size is 16 RBs. In this case, the BWP can contain a maximum of 3 RBGs. Three bits are required to indicate the BWP bandwidth. For example, the indication can be "100" to activate 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.

[0124] In another possible scenario, the time domain resources occupied by the second-level DCI may be predefined, such as the second-level DCI being transmitted N1 time slots after the time slot occupied by the first information by default, with the time domain starting symbol being M1 and the number of occupied symbols being 1, 2, or more. Alternatively, the time domain resources occupied by the second-level DCI may be indicated by the first information, such as the first information may indicate that the second-level DCI is transmitted N2 time slots after the time slot occupied by the first information, with the time domain starting symbol being M2 and the number of occupied symbols being 1, 2, or more.

[0125] In another possible scenario, the first information may also indicate the MCS of the second-level DCI. For example, when the second-level DCI is carried by PDSCH, the MCS table may be rows 0 to 15 of the PDSCH or physical uplink shared channel (PUSCH) table in the related art, and the first information may indicate which row to use, such as which row in the MCS table to use may be indicated by 4 bits. When the second-level DCI is carried by PDSCH, the MCS table used may be a newly added table, or the MCS table of PDSCH or PUSCH may be multiplexed. In the case of multiplexing the MCS table of PDSCH or PUSCH, the first information may only indicate the first 16 rows of the MCS table.

[0126] In one 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 also indicate whether the modulation and coding scheme (MCS) of the second-level DCI is shared with the MCS of the data carried in the PDSCH. The MCS of the second-level DCI and the MCS of the data carried in the PDSCH may have different options depending on the position 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 use quadrature phase shift keying (QPSK) fixedly. Optionally, the first information may also indicate whether the encoding between the second-level DCI and the data carried in the PDSCH is separate encoding or joint encoding.

[0127] In an embodiment of the present application, the blind detection method of the first-level DCI can be indicated by the above-mentioned first information. The blind detection method of the second-level DCI can be indicated by the first-level DCI, or can also be indicated by the above-mentioned first information, and this application does not make specific limitations. If the blind detection method of the second-level DCI is based on the first module detection, then the terminal can detect the second-level DCI through the first module. If the blind detection method of the second-level DCI is based on the second module detection, then the terminal can detect the second-level DCI through the second module.

[0128] Refer to Figure 5B, which shows a schematic diagram of a blind detection method for DCI. As can be seen from a in Figure 5B, the resources occupied by the second-level DCI can be indicated by the first-level DCI. The base station can indicate that the first-level DCI is detected by the second module through the first information, and the first-level DCI is carried on 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 can be detected by the first module or by the second module, and the blind detection method of the second-level DCI can be indicated by RRC signaling or the first-level DCI. Optionally, the second-level DCI can be carried in the PDCCH or in the PDSCH. Please refer to the previous related description and will not be repeated here.

[0129] As can be seen from b in Figure 5B, the resources occupied by the second-level DCI can be indicated by LP-WUS, such as by the first information included in the LP-WUS. The base station can indicate through the first information that the second-level DCI is detected by the second module, and the second-level DCI is carried in the PDSCH. Among them, the aforementioned first information is carried in the LP-WUS, that is, the 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 the LP-WUS or by RRC signaling. Optionally, the first-level DCI can be carried in the PDCCH.

[0130] As can be seen from c in Figure 5B, the resources occupied by the second-level DCI can be indicated by the first-level DCI. The base station can indicate through 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 in the PDCCH, and the second-level DCI is carried in the PDSCH. The aforementioned first information is carried in the LP-WUS, that is, the LP-WUS indicates that the blind detection method for the first-level DCI includes detection based on the second module, and the blind detection method for the second-level DCI includes detection based on the second module.

[0131] In the embodiment of the present application, the first information may also indicate other information to assist in reducing the complexity of blind detection. The DCI described below may be replaced by the first-level DCI and / or the second-level DCI.

[0132] For example, the first information may indicate the presence or absence of DCI, or the first information may indicate whether DCI exists. For example, the first information may include 1-bit information indicating the presence or absence of DCI. For example, when the value of the 1-bit indication information is 0, it may indicate the absence of DCI, and when the value of the 1-bit indication information is 1, it may indicate the presence of DCI. Conversely, when the value of the 1-bit indication information is 1, it may indicate the absence of DCI, and when the value of the 1-bit indication information is 0, it may indicate the presence of DCI. When the first information indicates the presence of DCI, the terminal may detect DCI based on the blind detection method indicated by the first information.

[0133] For another example, if the first information indicates that there is DCI, the first information may also indicate that the DCI is uplink scheduled DCI or the DCI is downlink scheduled DCI. For example, the first information may include 1-bit indication information indicating that the DCI is uplink scheduled DCI or the DCI is downlink scheduled DCI. For example, when the value of the 1-bit indication information is 0, it can indicate that the DCI is uplink scheduled DCI, and when the value of the 1-bit indication information is 1, it can indicate that the DCI is downlink scheduled DCI. Conversely, when the value of the 1-bit indication information is 1, it can indicate that the DCI is uplink scheduled DCI, and when the value of the 1-bit indication information is 0, it can indicate that the DCI is downlink scheduled DCI.

[0134] Optionally, the first information may be used in conjunction with the second indication information to indicate the presence or absence of DCI, and whether the DCI is uplink scheduled DCI or downlink scheduled DCI.

[0135] Table 3: Example of second indication information

[0136] In Table 3, when the value of the second indication information is 00, it can indicate that there is no DCI. When the value of the second indication information is 01, it can indicate that there is DCI and it is downlink DCI, and so on. It can be understood that Table 3 uses the second indication information of 2 bits as an example for explanation. Those skilled in the art can set the second indication information to 3 bits, 4 bits or more bits as needed, and this application does not make specific limitations. In addition, the correspondence between the value and content of the second indication information is only shown as an example, and is not sufficient to limit the correspondence between the value of the second indication information and the content indicated. The second indication information can indicate whether there is DCI and whether the DCI is uplink scheduled DCI and / or whether the DCI is downlink scheduled DCI.

[0137] For another example, embodiments of the present application also support DCI skipping. Referring to Figure 6, the first information may also indicate a first duration, which may be understood as the duration of the jump required when detecting DCI. In other words, the first information may also indicate the duration of the DCI jump. It is understood that the first duration may be a period of time, or may be implemented through a time slot or a sub-time slot.

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

[0139] In one example, when the first information indicates that there is DCI, the first information may also indicate DCI candidate information, such as the detection position of the DCI. In one possible case, the first information may indicate the aggregation level. If the first information indicates that the aggregation level is the first aggregation level, the terminal blindly detects the candidate position corresponding to the first aggregation level. For example, the first aggregation level is aggregation level (aggregated level, AL)-2, and AL-2 corresponds to 6 candidate positions. The terminal can blindly detect DCI at the 6 candidate positions corresponding to AL-2. It can be understood that the candidate position in the embodiment of the present application can also be replaced by the detection position.

[0140] In another possible scenario, the first information may indicate an aggregation level range. For example, the aggregation levels may be grouped, and the first information may indicate an aggregation level group. For example, assuming that AL-1 and AL-2 are aggregation level group 1, and AL-4 and AL-8 are aggregation level group 2, the first information may indicate aggregation level group 1 or aggregation level group 2. The terminal may then blindly detect DCI at the candidate positions 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, the terminal may blindly detect DCI at the candidate positions corresponding to AL-1 and the candidate positions corresponding to AL-2.

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

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

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

[0144] In some possible implementations, the communication device 700 can implement the behaviors and functions of the terminal, etc. in the above-mentioned method embodiments. For example, the communication device 700 can be a terminal, or a component (such as a chip or circuit) used in a terminal. The transceiver unit 720 can be used to perform all receiving or sending operations performed by the terminal in the embodiment shown in Figure 4. For example, S401 in the embodiment shown in Figure 4, and / or other processes used to support the technology described herein; wherein the processing unit 710 is used to perform all operations performed by the terminal in the embodiment shown in Figure 4 except for the sending and receiving operations.

[0145] For example, the transceiver unit 720 is configured to receive first information indicating a blind detection method for downlink control information, where the blind detection method 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 710 is configured to activate the first module or the second module to detect the downlink control information based on the blind detection method.

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

[0147] For example, processing unit 710 is configured to determine first information indicating a blind detection method for downlink control information, where the blind detection method 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. 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 may be made to the relevant description of the aforementioned method embodiment.

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

[0150] Based on the same concept, as shown in FIG8 , an embodiment of the present application provides a communication device 800. The communication device 800 includes a processor 810. Optionally, the communication device 800 may further include a memory 820 for storing instructions executed by the processor 810, or storing input data required by the processor 810 to execute instructions, or storing data generated after the processor 810 executes instructions. The processor 810 can implement the method shown in the above method embodiment using the instructions stored in the memory 820.

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

[0152] The communication device 900 may include at least one processor 910 coupled to a memory. Optionally, the memory may be located within or outside the device. For example, the communication device 900 may also include at least one memory 920. The memory 920 stores the necessary computer programs, configuration information, computer programs or instructions, and / or data for implementing any of the above-described embodiments. The processor 910 may execute the computer programs stored in the memory 920 to perform the method in any of the above-described embodiments.

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

[0154] The communication device 900 may also include a transceiver 930, and the communication device 900 can exchange information with other devices through the transceiver 930. The transceiver 930 can be a circuit, a bus, a transceiver or any other device that can be used for information exchange, or is called a signal transceiver unit. As shown in Figure 9, 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 can also be an input and output circuit and / or a communication interface, which can input data (or receive data) and output data (or send data). The processor is an integrated processor or microprocessor or integrated circuit, and the processor can determine the output data based on the input data.

[0155] In one possible implementation, the communication device 900 can be applied to a terminal. Specifically, the communication device 900 can be a terminal or a device that can support the terminal in implementing the functions of the terminal in any of the above-mentioned embodiments. The memory 920 stores the necessary computer programs, computer programs or instructions and / or data to implement the functions of the communication device in any of the above-mentioned embodiments. The processor 910 can execute the computer program stored in the memory 920 to perform the method performed by the terminal in any of the above-mentioned embodiments.

[0156] In one 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 a base station in implementing the functions of a base station in any of the above-mentioned embodiments. The memory 920 stores the necessary computer programs, computer programs, instructions, and / or data for implementing the functions of the base station in any of the above-mentioned embodiments. The processor 910 can execute the computer program stored in the memory 920 to perform the method performed by the base station in any of the above-mentioned embodiments.

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

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

[0159] In an embodiment of the present application, the memory may be a non-volatile memory, such as a hard disk drive (HDD) or a solid-state drive (SSD), etc., or a volatile memory (volatile memory), such as a random-access memory (RAM). The memory may also be any other medium that can be used to carry or store 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 an embodiment of the present application may also be a circuit or any other device that can implement a storage function, for storing computer programs, computer programs or instructions and / or data.

[0160] Based on the above embodiments, referring to FIG10 , an embodiment of the present application also provides 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 code instructions to execute the method executed by the terminal or base station in any of the above embodiments.

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

[0162] The following describes in detail the operations performed by the communication device when applied to a terminal or a base station.

[0163] In an optional implementation, the communication device 10000 may be applied to a terminal to execute the method executed by the aforementioned terminal, specifically, for example, the method executed by the terminal in the embodiment shown in FIG. 4 .

[0164] For example, input / output interface 1010 is configured to receive first information indicating a blind detection method for downlink control information, where the blind detection method 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. Logic circuit 1020 is configured to activate the first module or the second module to detect the downlink control information based on the blind detection method.

[0165] Since the communication device 10000 provided in this embodiment can be applied to a terminal to implement the above-mentioned terminal execution method, the technical effects that can be obtained can be referred to the above-mentioned method embodiment and will not be described in detail here.

[0166] In an optional implementation, the communication device 10000 can be applied to a base station to execute the method executed by the above-mentioned base station, specifically, for example, the method executed by the base station in the embodiment shown in Figure 4 above.

[0167] For example, logic circuit 1020 is configured to determine first information, where the first information indicates a blind detection method for downlink control information, including blind detection of the downlink control information using a first module of the communication device or blind detection of the downlink control information using a second module of the communication device. 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 implement the method executed by the above-mentioned base station, the technical effects that can be obtained can be referred to the above-mentioned method embodiment and will not be described in detail here.

[0169] Based on the above embodiments, embodiments of the present application further provide 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 achieved can be referred to the above method embodiments and will not be repeated here.

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

[0171] Based on the above embodiments, 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 code, such as a USB flash drive, a mobile hard drive, a read-only memory, a random access memory, a magnetic disk, or an optical disk.

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

[0173] Those skilled in the art will appreciate that the embodiments of the present application can be provided as methods, systems, or computer program products. Therefore, the present application can adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application can adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to magnetic disk storage, CD-ROM, optical storage, etc.) that contain computer-usable program code.

[0174] The present application is described with reference to the flow chart and / or block diagram of the method, device (system) and computer program product according to the embodiment of the present application. It should be understood that each flow process and / or box in the flow chart and / or block diagram and the combination of the flow process and / or box in the flow chart and / or block diagram can be realized by a computer program or instruction. These computer programs or instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processing machine or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device produce a device for realizing the function specified in one flow chart flow or multiple flows and / or one box or multiple boxes of the block diagram.

[0175] These computer programs or instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce a manufactured product including an instruction device that implements the functions specified in one or more processes in the flowchart and / or one or more boxes in the block diagram.

[0176] These computer programs or instructions may also be loaded onto a computer or other programmable data processing device so that a series of operating steps are performed on the computer or other programmable device to produce a computer-implemented process, whereby the instructions executed on the computer or other programmable device provide steps for implementing the functions specified in one or more processes of the flowchart and / or one or more blocks of the block diagram. Obviously, those skilled in the art may 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 equivalents, the present application is also intended to include these changes and variations.

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, the power consumption of the first module is lower than the power consumption of the second module, and the method includes: Receive first information, where the first information indicates a blind detection method for downlink control information, where the blind detection method includes using the first module to blindly detect the downlink control information or using the second module to blindly detect the downlink control information; Based on the blind detection method, the first module or the second module is activated 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 consumption wake-up signal, or the first information is carried in a radio resource control signaling.

3. The method according to claim 1 or 2, characterized in that: Also includes: The first information indicates that the second module is used to blindly detect the downlink control information; The first information also includes a first condition, and the first condition is used to switch from blind detection of the downlink control information by the second module to blind detection of 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 a blind detection method of the second information, and the second information and the third information do not overlap; The detecting the downlink control information based on the blind detection method includes: Based on the blind detection method, the second information is detected.

5. The method according to claim 4, characterized in that The second information also includes one or more of the following: The time-frequency resources 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 in the first downlink control channel, and the third information is carried in the second downlink control channel; or, the second information is carried in the downlink control channel, and the third information is carried in the 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, and the detecting the downlink control information based on the blind detection method includes: When the first information indicates that the downlink control information exists, the downlink control information is detected based on the blind detection method.

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, where the first duration is the duration required to jump 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 downlink control information scheduled across carriers.

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; wherein the aggregation level group includes one or more aggregation levels; The detecting the downlink control information based on the blind detection method includes: The downlink control information is detected at a detection position corresponding to the aggregation level, or at a 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, where the target detection position is part or all of the detection positions corresponding to the aggregation level indicated by the first information; The detecting the downlink control information based on the blind detection method includes: At the target detection position, the downlink control information is detected based on the blind detection method.

13. A method for detecting downlink control information, characterized in that: include: Determine first information, where the first information indicates a blind detection method for downlink control information, where the blind detection method 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 first information is sent to the communication device.

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

15. The method according to claim 13 or 14, characterized in that The first information also includes a first condition, and the first condition is used to indicate switching from blind detection of the downlink control information by the second module to blind detection of the downlink control information based on the first module.

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

17. The method according to claim 16, characterized in that The second information also includes one or more of the following: The time-frequency resources of the third information or the modulation and coding strategy of the third information.

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

19. The method according to any one of claims 13 to 18, characterized in that: The first information also indicates whether the downlink control information exists.

20. The method according to any one of claims 13 to 19, 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.

21. The method according to any one of claims 13 to 20, characterized in that: The first information further indicates a first duration, where the first duration is the duration required to jump when detecting the downlink control information.

22. The method according to any one of claims 13 to 21, characterized in that: The first information further indicates whether the downlink control information is downlink control information scheduled across carriers.

23. The method according to any one of claims 13 to 22, characterized in that: 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 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, 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.

25. A communication device, characterized in that: The method comprises a unit for executing the method according to any one of claims 1 to 12, or comprises a unit for executing the method according to any one of claims 13 to 24.

26. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer-executable instructions, which, when called by an electronic device, enable the electronic device to execute the method as claimed in any one of claims 1 to 12, or enable the electronic device to execute the method as claimed in any one of claims 13 to 24.

27. A communication system, characterized in that: The invention comprises a device for executing the method according to any one of claims 1 to 12 and a device for executing the method according to any one of claims 13 to 24.

28. A chip system, characterized in that: The chip system comprises: Communication interface; A processor, used to call and run the instruction through the communication interface, so that the device equipped with the chip system executes the method as described in any one of claims 1 to 12, or so that the device equipped with the chip system executes the method as described in any one of claims 13 to 24.

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