Information configuration method and communication apparatus

Abstract

An information configuration method and a communication apparatus. The method comprises: receiving first information and second information from a network device, wherein the first information is used for configuring a transmission parameter of a first PDCCH in a communication mode, the second information is used for configuring a transmission parameter of a second PDCCH in a sensing mode, the transmission parameters comprise aggregation levels, and a second aggregation level of the second PDCCH is greater than a first aggregation level of the first PDCCH; in the communication mode, receiving the first PDCCH from the network device on the basis of the transmission parameter of the first PDCCH; and in the sensing mode, receiving the second PDCCH from the network device on the basis of the transmission parameter of the second PDCCH. Therefore, during switching from a communication mode to a sensing mode, an improvement in downlink coverage performance in the sensing mode is facilitated; and during switching from the sensing mode to the communication mode, a reduction in resource waste in the communication mode is facilitated.

Description

Information configuration method and communication device

[0001] The present application claims priority to the Chinese patent application No. 202410482177.3, filed on April 19, 2024, with the State Intellectual Property Office of China, and the Chinese patent application No. 202410482177.3 has the title of “Information configuration method and communication device”, the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] The present application relates to the field of communication technology, and in particular, to an information configuration method and a communication device. BACKGROUND

[0003] In the process of the evolution of the 5th generation (5G) to 5G-advanced (5G-A), the communication and perception integrated technology is considered as one of the key technologies to expand the business capabilities of the mobile communication network. The core idea of this technology is to add perception capabilities on the mobile communication network to build the ability to detect, track and image the target, so as to make the communication and perception two capabilities coexist in harmony, even mutual benefit. Among them, the technical principle of perception and the technical principle of communication exist certain differences. The communication is that the sending end modulates the information on the radio wave and sends it to the receiving end, and the receiving end demodulates the signal carried on the radio wave to obtain the information. The perception needs the sending end to send the radio wave to a specific direction, when the radio wave irradiates to the target surface, it will form a reflected wave, so that the receiving end obtains the position, speed and type of the target by receiving and processing the reflected wave.

[0004] However, when switching from the communication mode to the perception mode, the transmission power will be damaged, resulting in a decrease in transmission energy, thereby reducing the downlink coverage performance in the perception mode. When switching from the perception mode to the communication mode, the transmission power will be too large, which will also cause resource waste in the communication mode. SUMMARY

[0005] The embodiments of the present application provide an information configuration method and a communication device. Based on the method described in the present application, when switching from the communication mode to the perception mode, it is beneficial to improve the downlink coverage performance in the perception mode; when switching from the perception mode to the communication mode, it is beneficial to reduce the resource waste in the communication mode.

[0006] In a first aspect, a communication method is provided. The method is applied to a terminal device. The terminal device supports a communication mode and a sensing mode. The method comprises: receiving first information and second information from a network device; the first information is used to configure transmission parameters of a first physical downlink control channel (PDCCH) in the communication mode, the transmission parameters of the first PDCCH comprising a first aggregation level of the first PDCCH; the second information is used to configure transmission parameters of a second PDCCH in the sensing mode, the transmission parameters of the second PDCCH comprising a second aggregation level of the second PDCCH; the second aggregation level is greater than the first aggregation level; in the communication mode, receiving the first PDCCH from the network device based on the transmission parameters of the first PDCCH; in the sensing mode, receiving the second PDCCH from the network device based on the transmission parameters of the second PDCCH.

[0007] Based on the method described in the first aspect, the network device configures a set of transmission parameters of a PDCCH in the communication mode (i.e., the transmission parameters of the first PDCCH) to the terminal device and configures a set of transmission parameters of a PDCCH in the sensing mode (i.e., the transmission parameters of the second PDCCH) to the terminal device, so as to realize the separate configuration of the transmission parameters of the PDCCH in the communication mode and the sensing mode. Since the aggregation level of the PDCCH in the sensing mode needs to be improved relative to the aggregation level of the PDCCH in the communication mode, i.e., the aggregation level of the PDCCH in the sensing mode needs to be greater than the aggregation level of the PDCCH in the communication mode (the second aggregation level of the second PDCCH is greater than the first aggregation level of the first PDCCH), this is beneficial to improve the downlink coverage performance in the sensing mode when switching from the communication mode to the sensing mode, so as to make the downlink coverage performance in the sensing mode consistent with the downlink coverage performance in the communication mode as much as possible. When switching from the sensing mode to the communication mode, the aggregation level of the PDCCH in the communication mode is reduced, which is beneficial to reduce the resource waste in the communication mode.

[0008] In a possible implementation, the size of the time-frequency resource occupied by the second PDCCH is greater than the size of the time-frequency resource occupied by the first PDCCH. Based on this manner, it is beneficial to improve the downlink coverage performance in the sensing mode when switching from the communication mode to the sensing mode, and it is beneficial to reduce the resource waste in the communication mode when switching from the sensing mode to the communication mode.

[0009] In a possible implementation, the transmission parameter of the first PDCCH further includes a first control resource set used for indicating frequency domain resources occupied by the first PDCCH; the transmission parameter of the second PDCCH further includes a second control resource set used for indicating frequency domain resources occupied by the second PDCCH; and a number of resource blocks (RBs) occupied by the second control resource set is greater than or equal to a number of RBs occupied by the first control resource set. It can be understood that when the aggregation level of the second PDCCH is greater than the aggregation level of the first PDCCH, the resources occupied by the PDCCH in the sensing mode are more, and therefore, in order to guarantee the resource allocation of the PDCCH as much as possible, the number of RBs occupied by the second control resource set can be set to be greater than the number of RBs occupied by the first control resource set; of course, if the number of RBs occupied by the first control resource set in the communication mode can meet the resources occupied by the PDCCH in the sensing mode, the number of RBs occupied by the second control resource set can also be equal to the number of RBs occupied by the first control resource set, thereby saving scheduling resources. Based on this mode, it is beneficial to guarantee the rationality of resource allocation.

[0010] In a possible implementation, a number of control channel elements (CCEs) occupied by the second control resource set is greater than or equal to a number of CCEs occupied by the first control resource set. It can be understood that when the aggregation level of the second PDCCH is greater than the aggregation level of the first PDCCH, the resources occupied by the PDCCH in the sensing mode are more, and therefore, in order to guarantee the resource allocation of the PDCCH as much as possible, the number of CCEs occupied by the second control resource set can be set to be greater than the number of CCEs occupied by the first control resource set; of course, if the number of CCEs occupied by the first control resource set in the communication mode can meet the resources occupied by the PDCCH in the sensing mode, the number of CCEs occupied by the second control resource set can also be equal to the number of CCEs occupied by the first control resource set, thereby saving scheduling resources. Based on this mode, it is beneficial to guarantee the rationality of resource allocation.

[0011] In a possible implementation, the second aggregation level is N times of the first aggregation level, and N is an integer greater than 1. Based on this mode, when switching from the communication mode to the sensing mode, it is beneficial to improve the downlink coverage performance in the sensing mode; and when switching from the sensing mode to the communication mode, it is beneficial to reduce the resource waste in the communication mode.

[0012] In a possible implementation, the number of RBs occupied by the second control resource set is R times the number of RBs occupied by the first control resource set, R is greater than 1, and R is the same as or different from N; or the number of RBs occupied by the second control resource set is equal to the number of RBs occupied by the first control resource set. It can be understood that when the aggregation level of the second PDCCH is greater than the aggregation level of the first PDCCH, the resources occupied by the PDCCH in the sensing mode become more, and therefore, in order to guarantee the resource allocation of the PDCCH as much as possible, the number of RBs occupied by the second control resource set can be set to be R times the number of RBs occupied by the first control resource set. Of course, if the number of RBs occupied by the first control resource set in the communication mode can meet the resources occupied by the PDCCH in the sensing mode, the number of RBs occupied by the second control resource set can also be equal to the number of RBs occupied by the first control resource set, so as to save the scheduling resources. Based on this mode, it is beneficial to guarantee the rationality of resource allocation.

[0013] In a possible implementation, the transmission parameter of the first PDCCH further includes one or more first search spaces, the first control resource set corresponds to the one or more first search spaces, and the first search space indicates the number of candidate first PDCCHs under each first aggregation level; the transmission parameter of the second PDCCH further includes one or more second search spaces, the second control resource set corresponds to the one or more second search spaces, and the second search space indicates the number of candidate second PDCCHs under each second aggregation level; when the number of CCEs occupied by the first control resource set is less than a first value, the number of CCEs occupied by the second control resource set is R times the number of CCEs occupied by the first control resource set; R is greater than 1, and R is the same as or different from N; and the first value is N times the maximum value in the total number of CCEs occupied by all candidate first PDCCHs in the first search space under each first aggregation level. It can be understood that when the aggregation level of the second PDCCH is greater than the aggregation level of the first PDCCH, the resources occupied by the PDCCH in the sensing mode become more, and therefore, in order to guarantee the resource allocation of the PDCCH as much as possible, the number of CCEs occupied by the second control resource set can be set to be R times the number of CCEs occupied by the first control resource set. Based on this mode, it is beneficial to improve the rationality of setting the number of CCEs occupied by the second control resource set.

[0014] In a possible implementation, when the number of CCEs occupied by the first control resource set is greater than or equal to the first value, the number of CCEs occupied by the second control resource set is equal to the number of CCEs occupied by the first control resource set. It can be understood that if the CCEs occupied by the first control resource set in the communication mode can meet the resources occupied by the PDCCH in the sensing mode, the number of CCEs occupied by the second control resource set can also be equal to the number of CCEs occupied by the first control resource set, thereby saving scheduling resources. Based on this mode, it is beneficial to improve the rationality of setting the number of CCEs occupied by the second control resource set.

[0015] In a possible implementation, the first value satisfies: wherein the indicates the maximum value in the total number of CCEs occupied by all candidates of the first PDCCH in each first aggregation level in the first search space; the L indicates the first aggregation level corresponding to the maximum value, and the indicates the number of candidates of the first PDCCH in the first aggregation level corresponding to the maximum value.

[0016] In a second aspect, the present application provides a communication method, the method is applied to a network device, the network device supports a communication mode and a sensing mode, and the method comprises the following steps: sending first information and second information to a terminal device; the first information is used for configuring transmission parameters of a first physical downlink control channel (PDCCH) in the communication mode, the transmission parameters of the first PDCCH comprise a first aggregation level of the first PDCCH; the second information is used for configuring transmission parameters of a second PDCCH in the sensing mode, the transmission parameters of the second PDCCH comprise a second aggregation level of the second PDCCH; the second aggregation level is greater than the first aggregation level; in the communication mode, sending the first PDCCH to the terminal device based on the transmission parameters of the first PDCCH; and in the sensing mode, sending the second PDCCH to the terminal device based on the transmission parameters of the second PDCCH.

[0017] The beneficial effects of the possible implementation of the second aspect can refer to the beneficial effects of the possible implementation of the first aspect, which will not be repeated here.

[0018] In a possible implementation, the size of the time-frequency resource occupied by the second PDCCH is greater than the size of the time-frequency resource occupied by the first PDCCH.

[0019] In a possible implementation, the transmission parameter of the first PDCCH further includes a first control resource set, and the first control resource set is used to indicate frequency domain resources occupied by the first PDCCH; the transmission parameter of the second PDCCH further includes a second control resource set, and the second control resource set is used to indicate frequency domain resources occupied by the second PDCCH; and a number of resource blocks (RBs) occupied by the second control resource set is greater than or equal to a number of RBs occupied by the first control resource set.

[0020] In a possible implementation, a number of control channel elements (CCEs) occupied by the second control resource set is greater than or equal to a number of CCEs occupied by the first control resource set.

[0021] In a possible implementation, the second aggregation level is N times of the first aggregation level, and N is an integer greater than 1.

[0022] In a possible implementation, a number of RBs occupied by the second control resource set is R times of a number of RBs occupied by the first control resource set, R is greater than 1, and R is the same as or different from N; or the number of RBs occupied by the second control resource set is equal to the number of RBs occupied by the first control resource set.

[0023] In a possible implementation, the transmission parameter of the first PDCCH further includes one or more first search spaces, the first control resource set corresponds to the one or more first search spaces, and the first search space indicates a number of candidate first PDCCHs in each first aggregation level; the transmission parameter of the second PDCCH further includes one or more second search spaces, the second control resource set corresponds to the one or more second search spaces, and the second search space indicates a number of candidate second PDCCHs in each second aggregation level; when a number of CCEs occupied by the first control resource set is less than a first value, a number of CCEs occupied by the second control resource set is R times of the number of CCEs occupied by the first control resource set, R is greater than 1, and R is the same as or different from N; and the first value is N times of a maximum value in a total number of CCEs occupied by all candidate first PDCCHs in each first aggregation level in the first search space.

[0024] In a possible implementation, when a number of CCEs occupied by the first control resource set is greater than or equal to the first value, a number of CCEs occupied by the second control resource set is equal to the number of CCEs occupied by the first control resource set.

[0025] In a possible implementation, the first value satisfies: wherein the represents a maximum value in a total number of CCEs occupied by all candidates of the first PDCCH under each first aggregation level in the first search space; the L represents a first aggregation level corresponding to the maximum value, and the represents a number of candidates of the first PDCCH under the first aggregation level corresponding to the maximum value.

[0026] In a third aspect, a communication apparatus is provided. The communication apparatus includes a processor. When the processor invokes a computer program in a memory, the method in the first aspect or the second aspect is executed.

[0027] In a fourth aspect, a communication apparatus is provided. The communication apparatus includes a processor and a memory. The processor and the memory are coupled. The processor is configured to implement the method in the first aspect or the second aspect.

[0028] In a fifth aspect, a communication apparatus is provided. The communication apparatus includes a processor, a memory and a transceiver. The processor and the memory are coupled. The transceiver is configured to transceive data. The processor is configured to implement the method in the first aspect or the second aspect.

[0029] In a sixth aspect, a chip is provided. The chip includes a processor and an interface. The processor and the interface are coupled. The interface is configured to receive or output a signal. The processor is configured to execute code instructions, so that the method in the first aspect or the second aspect is executed.

[0030] In a seventh aspect, a computer readable storage medium is provided. The computer readable storage medium stores a computer program or instructions. When the computer program or instructions are executed by a communication apparatus, the method in the first aspect or the second aspect is implemented.

[0031] In an eighth aspect, a communication system is provided. The communication system includes a terminal device and a network device. The terminal device is configured to execute the method in the first aspect. The network device is configured to execute the method in the second aspect.

[0032] In a ninth aspect, a computer program product is provided. The computer program product includes instructions. When a computer reads and executes the computer program product, the computer executes the method in the first aspect or the second aspect. BRIEF DESCRIPTION OF DRAWINGS

[0033] FIG. 1A is a schematic diagram of a communication system according to an embodiment of the present application;

[0034] FIG. 1B is a schematic diagram of a network architecture of a communication system according to an embodiment of the present application;

[0035] FIG. 2A is a schematic diagram of a single station sensing according to an embodiment of the present application;

[0036] FIG. 2B is a schematic diagram of a two-station sensing according to an embodiment of the present application;

[0037] FIG. 2C is a schematic diagram of a communication-sensing integrated scenario according to an embodiment of the present application;

[0038] FIG. 2D is a schematic diagram of six sub-scenarios in a sensing mode according to an embodiment of the present application;

[0039] FIG. 3A is a schematic diagram of a resource element group corresponding to a control channel element according to an embodiment of the present application;

[0040] FIG. 3B is a schematic diagram of a search space according to an embodiment of the present application;

[0041] FIG. 3C is a schematic diagram of a candidate PDCCH time domain position according to an embodiment of the present application;

[0042] FIG. 4 is a flow diagram of an information configuration method according to an embodiment of the present application;

[0043] FIG. 5 is a schematic diagram of a communication time slot and a sensing time slot according to an embodiment of the present application;

[0044] FIG. 6A is a schematic diagram of a first PDCCH candidate in a first search space according to an embodiment of the present application;

[0045] FIG. 6B is a schematic diagram of a second PDCCH candidate in a second search space according to an embodiment of the present application;

[0046] FIG. 7A is a schematic diagram of another second PDCCH candidate in a second search space according to an embodiment of the present application;

[0047] FIG. 7B is a schematic diagram of a first PDCCH candidate in a first search space according to an embodiment of the present application;

[0048] FIG. 8A is a schematic diagram of another first PDCCH candidate in a first search space according to an embodiment of the present application;

[0049] FIG. 8B is a schematic diagram of another second PDCCH candidate in a second search space according to an embodiment of the present application;

[0050] FIG. 9 is a structural diagram of a communication apparatus according to an embodiment of the present application;

[0051] FIG. 10 is a structural diagram of another communication apparatus according to an embodiment of the present application;

[0052] FIG. 11 is a structural diagram of a chip according to an embodiment of the present application. DETAILED DESCRIPTION

[0053] The terms "first" and "second" and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a specific sequential or chronological order. Descriptions using the terms "including", "containing" or "comprising" and variations thereof are used herein to indicate the inclusion of a recited element, but not the exclusion of any other elements. For example, a process, method, article, or apparatus that includes a list of steps or elements is not limited to only those steps or elements but can include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

[0054] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment. The appearances of the phrase "in an embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily mutually exclusive of one another. It is expressly understood that any of the embodiments described herein can be incorporated into any other embodiment.

[0055] In the present application, "at least one" means one or more, "multiple" means two or more, "at least two" means two or three or more, and "and / or" is used to describe the relationship between associated objects, indicating that there can be three relationships, for example, "A and / or B" can mean: only A, only B, and A and B exist at the same time, where A and B can be singular or plural. The character " / " generally represents an "or" relationship between the associated objects. "At least one" or the like means any combination of these items, including any combination of single or multiple items. For example, at least one of a, b or c can mean: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", where a, b, and c can be single or multiple.

[0056] In order to better understand the embodiments of the present application, first, the system architecture related to the embodiments of the present application will be introduced as follows:

[0057] The technical solutions of the embodiments of the present application can be applied to various communication systems, for example, a satellite communication system, a traditional mobile communication system. The satellite communication system can be integrated with the traditional mobile communication system (i.e., a ground communication system). The mobile communication system herein is, for example, a wireless local area network (WLAN) communication system, a wireless fidelity (Wi-Fi) system, a multiple-in multiple-out (MIMO) communication system, a long term evolution (LTE) system, an LTE frequency division duplex (FDD) system, an LTE time division duplex (TDD), a 5th generation (5G) system or a new radio (NR), and other future communication systems, for example, a 6th generation (6G) system, and a communication system supporting multiple wireless technology integration, for example, can also be applied to a system of a non-terrestrial network (NTN) integrated ground mobile communication network, such as a drone, a satellite communication system, a high altitude platform station (HAPS) communication, and the like. In addition, it can also be applicable to low frequency (sub 6 GHz) and high frequency (above 6 GHz) communication scenarios. It can be understood that the system architecture described in the embodiments of the present application is to more clearly illustrate the technical solutions of the embodiments of the present application, and does not constitute a limitation on the technical solutions provided by the embodiments of the present application.

[0058] FIG. 1A is a schematic diagram of a communication system applicable to the embodiments of the present application. The communication system includes at least one network device and at least one terminal device. In FIG. 1A, a network device and a plurality of terminal devices are taken as examples. The plurality of terminal devices can be cellular phones, smart phones, portable computers, handheld communication devices, handheld computing devices, satellite radios, global positioning systems, personal digital assistants (PDAs), and / or any other suitable devices for communicating over a wireless communication system, and can all be connected with the network device. The terminal devices can all communicate with the network device. In addition, the terminal devices and the terminal devices can also communicate with each other, such as device-to-device (D2D) transmission. Of course, the number of terminal devices and network devices in FIG. 1A is only an example, and can be less or more. The terminal devices and the network devices involved in the communication system in FIG. 1A are described in detail below.

[0059] I. Terminal device

[0060] The terminal device mentioned in the embodiments of the present application can be a device with wireless transceiving function, and can specifically refer to a user equipment (UE), an access terminal, a subscriber unit, a user station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a wireless communication device, a user agent or a user apparatus. The terminal device can also be a satellite phone, a cellular phone, a smartphone, a wireless data card, a wireless modem, a machine type communication device, can be a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a PDA, a handheld device with wireless communication function, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a communication device carried on an airship, a wearable device, a drone, a robot, a terminal in D2D communication, a terminal in vehicle to everything (V2X), a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal in industrial control, a wireless terminal in self driving, a wireless terminal in remote medical, a wireless terminal in smart grid, a wireless terminal in transportation safety, a wireless terminal in smart city, a wireless terminal in smart home or a terminal device in future communication network, etc., and the present application does not make any limitation. In addition, in the present application, when not specifically stated, the "terminal device" can refer to the terminal device itself or a component part in the terminal device, such as a chip system or SoC, which can be installed in the terminal device.

[0061] II. Network device

[0062] The network device mentioned in the embodiments of the present application has a wireless transceiving function, is used for communication with a terminal, and can specifically refer to a base station, an evolved NodeB (eNodeB), a transmission reception point (TRP), a next generation NodeB (gNB) in a 5G mobile communication system, a next generation eNB (ng-eNB), a next generation base station in a 6th generation (6G) mobile communication system, an access network device or a module of an access network device in an open RAN (ORAN) system, a base station in a future mobile communication system, or an access node in a WiFi system, etc. The network device can also be a module or unit capable of realizing part of the functions of a base station. For example, the network device can be a central unit (CU), a distributed unit (DU), a CU-control plane (CP), a CU-user plane (UP), or a radio unit (RU), etc. described below. Among them, in the ORAN system, the CU can also be referred to as an O-CU, the DU can also be referred to as an open (O)-DU, the CU-CP can also be referred to as an O-CU-CP, the CU-UP can also be referred to as an O-CU-UP, and the RU can also be referred to as an O-RU. For example, the base station in the embodiments of the present application can include various forms of base stations, such as a macro base station, a micro base station (also referred to as a small station), a relay station, an access point, a next generation base station (gNodeB, gNB), a transmitting and receiving point (TRP), a transmitting point (TP), a mobile switching center, and can also be a device that undertakes a wireless access function in D2D, vehicle-to-everything (V2X), machine-to-machine (M2M) communication, Internet of Things (IoT) communication, etc. In addition, in the present application, when not specifically stated, the "network device" can refer to the network device itself or a component in the network device, such as a chip system, a system-on-a-chip (SOC), which can be installed in the network device. In the embodiments of the present application, the chip system can be composed of a chip or can include a chip and other discrete devices. In the embodiments and subsequent embodiments, only the network device is taken as an example for introduction.

[0063] It should be noted that the terminal device and the network device can be connected by an air interface. In a long term evolution (LTE) / long term evolution advanced (LTE-A) communication system and a new radio (NR) system, according to different duplex modes, the air interface can be mainly divided into a frequency division duplex (FDD) mode and a time division duplex (TDD) mode. For a wireless communication system operating in the TDD mode, the downlink carrier and the uplink carrier of the system are carriers of the same carrier frequency. A multiple access mode usually adopts an orthogonal frequency division multiplexing access (OFDMA) mode. The main feature of the OFDMA mode is to divide the transmission resource into mutually orthogonal time-frequency resource elements (REs), and signals sent by a sending end are transmitted to a receiving end on the REs. Since different REs are mutually orthogonal, the receiving end can separately receive signals sent on each RE.

[0064] FIG. 1B is a schematic diagram of a network architecture of a communication system applicable to embodiments of the present application. As shown in FIG. 1B, the communication system 10 includes a radio access network (RAN) 100 and a core network (CN) 200. Optionally, the communication system 10 can also include an Internet 300. The RAN 100 includes at least one RAN node (such as 110a and 110b in FIG. 1B, collectively referred to as 110, which can be specifically described with reference to the description of the network device above) and at least one terminal device (such as 120a-120j in FIG. 1B, collectively referred to as 120, which can be specifically described with reference to the description of the terminal device above). The RAN 100 can also include other RAN nodes, such as a wireless relay device and / or a wireless backhaul device (not shown in FIG. 1B), etc. The terminal device 120 is connected to the RAN node 110 in a wireless manner. The RAN node 110 is connected to the core network 200 in a wireless or wired manner. The core network device in the core network 200 and the RAN node 110 in the RAN 100 can be different physical devices respectively, or can be the same physical device integrated with the logical functions of the core network and the logical functions of the radio access network.

[0065] The RAN 100 can be a 3GPP related cellular system, e.g., a 4G, 5G mobile communication system, or a future mobile communication system, e.g., a 6G mobile communication system. The RAN 100 can also be an open RAN (O-RAN or ORAN), a cloud radio access network (CRAN), or a wireless fidelity (WiFi) system. The RAN 100 can also be a communication system that combines two or more of the above systems.

[0066] The RAN node 110, which can also be referred to as an access network device, a radio access network device, a RAN entity, or an access node, etc., forms part of the communication system and is configured to facilitate wireless access by terminal devices. The RAN nodes 110 in the communication system 100 can be of the same type or of different types. In some scenarios, the roles of the RAN node 110 and the terminal device 120 are relative, e.g., the network element 120i in FIG. IB can be a helicopter or a drone, which can be configured to be a mobile base station. For a terminal device 120j that accesses the RAN 100 via the network element 120i, the network element 120i is a base station; but for the base station 110a, the network element 120i is a terminal device. The RAN nodes 110 and the terminal devices 120 are sometimes referred to as communication apparatuses, e.g., the network elements 110a and 110b in FIG. IB can be understood as communication apparatuses with base station functionalities, and the network elements 120a-120j can be understood as communication apparatuses with terminal device functionalities.

[0067] In a possible scenario, the RAN node can be a base station, an evolved Node B (eNodeB), an access point (AP), a transmission reception point (TRP), a next generation base station (gNB), a next generation base station in a 6G mobile communication system, a base station in a future mobile communication system, or an access node in a WiFi system, etc. The RAN node can be a macro base station (e.g., 110a in FIG. IB), a micro base station or an indoor station (e.g., 110b in FIG. IB), a relay node or a donor node, or a wireless controller in a CRAN scenario. Optionally, the RAN node can also be a server, a wearable device, a vehicle or a vehicle-mounted device, etc. For example, an access network device in a vehicle-to-everything (V2X) technology can be a road side unit (RSU). All or part of the functions of the RAN node in the present application can also be implemented by software functions running on hardware, or by virtualized functions instantiated on a platform, e.g., a cloud platform. The RAN node in the present application can also be a logical node, a logical module or software that can implement all or part of the functions of the RAN node.

[0068] In another possible scenario, a terminal device is assisted by multiple RAN nodes to implement wireless access, and different RAN nodes respectively implement part of the functions of a base station. For example, a RAN node can be a centralized unit (CU), a distributed unit (DU), a CU-CP, a CU-UP, or a radio unit (RU), etc. The CU and the DU can be separately arranged, 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 a remote radio unit (RRU), an active antenna processing unit (AAU), or a remote radio head (RRH).

[0069] In different systems, the CU (or CU-CP and CU-UP), DU or RU can also have different names, but those skilled in the art can understand their meanings. For example, in an ORAN system, the CU can also be referred to as an O-CU (open CU), the DU can also be referred to as an O-DU, the CU-CP can also be referred to as an O-CU-CP, the CU-UP can also be referred to as an O-CU-UP, and the RU can also be referred to as an O-RU. For the convenience of description, the CU, CU-CP, CU-UP, DU and RU are taken as examples for description in this application. 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.

[0070] In particular, the scheme provided by the present application can be applied to a communication and perception integrated scenario. In the process of evolution of the 5G mobile communication system to the 5G-advanced (5G-A) technology, the communication and perception integrated technology is considered as one of the key technologies capable of expanding the service capability of the mobile communication network. The core idea of this technology is to add perception capability on the mobile communication network to build the ability of target detection, tracking and imaging, so as to make the two capabilities of communication and perception coexist in harmony in one network, and even mutually beneficial. Among them, the technical principle of perception is different from that of communication. Communication is that the sending end modulates information on radio waves and sends it to the receiving end, and the receiving end demodulates the signal carried on the radio waves to obtain information; while perception needs the sending end to send radio waves to a specific direction, and when the radio waves irradiate the target surface, reflected waves are formed, so that the receiving end obtains the position, speed and type of the target by receiving and processing the reflected waves. It can be understood that the network devices and terminal devices in the communication network can also perceive objects without communication function while communicating. That is, the network devices and terminal devices in the communication and perception integrated scenario can support both communication mode (i.e. communication function) and perception mode (i.e. perception function).

[0071] It should be noted that perception can generally be divided into two types: single-station perception and double-station perception. Among them, for single-station perception, as shown in FIG. 2A, the sending end and the receiving end of the perception signal are the same device. From the perspective of the perception signal flow, the perception station not only needs to send the perception signal, but also needs to receive the signal reflected on the target surface (also known as echo signal), so the single-station perception mode is also called self-transmission and self-reception mode. For double-station perception, as shown in FIG. 2B, the sending end and the receiving end of the perception signal are two different devices. From the perspective of the perception signal flow, the signal reflected on the target surface after the perception signal is sent by the perception station A (i.e. network device A) is received by the perception station B (i.e. network device B), so the double-station perception mode is also called A-transmission and B-reception mode. Of course, in FIG. 2A and FIG. 2B, the network devices and terminal devices can also communicate with each other.

[0072] The communication and sensing integrated scenario is described below. FIG. 2C is a schematic diagram of a communication and sensing integrated scenario applicable to the embodiments of the present application. In the communication and sensing integrated scenario, the network device and the terminal device can communicate, and can also perform single-station sensing or double-station sensing on objects without communication functions. For example, the terminal device 1 can communicate with the network device; the terminal device 1 can also send a sensing signal, and the sensing signal is reflected on the surface of target 1 and received by the network device (i.e., single-station sensing). The terminal device 2 and the network device communicate with each other. The network device can communicate with the terminal device 3; the network device can also send a sensing signal, and the sensing signal is reflected on the surface of target 2 and received by the terminal device 3 (i.e., single-station sensing). The network device can send a sensing signal, and the sensing signal is reflected on the surface of target 3 and received by the network device (i.e., double-station sensing). The network device can send a sensing signal, and the sensing signal is reflected on the surface of target 4 and received by the network device (i.e., double-station sensing). The network device can send a sensing signal, and the sensing signal is reflected on the surface of target 5 and received by the network device (i.e., double-station sensing).

[0073] Specifically, in the entire communication and sensing integrated scenario, as shown in FIG. 2D, from the perspective of sensing mode, six sub-scenarios can be included, which are introduced below. In (1) of FIG. 2D, the network device is self-initiated and self-received; in (2) of FIG. 2D, the terminal device is self-initiated and self-received; in (3) of FIG. 2D, the network device A initiates and the network device B receives; in (4) of FIG. 2D, the terminal device A initiates and the terminal device B receives; in (5) of FIG. 2D, the network device initiates and the terminal device receives; and in (6) of FIG. 2D, the terminal device initiates and the network device receives.

[0074] In order to facilitate understanding of the scheme provided by the embodiments of the present application, the related concepts involved in the embodiments of the present application are introduced below:

[0075] 1. Nomenclature

[0076] (1) Subcarrier: In an orthogonal frequency-division multiplexing (OFDM) system, the frequency domain resource is divided into a plurality of sub-resources, which can be referred to as a subcarrier. The subcarrier is the smallest granularity of the frequency domain resource.

[0077] (2) Subcarrier spacing: The subcarrier spacing refers to the interval value between the center positions or peak positions of two adjacent subcarriers in the frequency domain. For example, the subcarrier spacing in a long term evolution (LTE) system is 15 kHz, and the subcarrier spacing in a new radio (NR) system can be 15 kHz, or 30 kHz, or 60 kHz, or 120 kHz, etc.

[0078] (3) Resource block: N subcarriers that are continuous in the frequency domain can be referred to as a resource block. For example, one resource block in the LTE system includes 12 subcarriers, and one resource block in the NR system also includes 12 subcarriers. With the evolution of communication systems, the number of subcarriers included in one resource block can also be other values.

[0079] (4) Slot: A slot refers to a time unit in the time domain. In the NR system, one slot includes 14 OFDM symbols. The length of a slot corresponding to a 15 kHz subcarrier spacing is 1 ms, the length of a slot corresponding to a 30 kHz subcarrier spacing is 0.5 ms, the length of a slot corresponding to a 60 kHz subcarrier spacing is 0.25 ms, the length of a slot corresponding to a 120 kHz subcarrier spacing is 0.125 ms, and the length of a slot corresponding to a 240 kHz subcarrier spacing is 0.0625 ms.

[0080] (5) Subframe: In the 5G NR system, the time length of one subframe is 1 ms.

[0081] (6) OFDM symbol: An OFDM symbol is the smallest time unit in the time domain in an OFDM system.

[0082] (7) Time-frequency resource unit: The smallest resource granularity in an OFDM system, which is one OFDM symbol in the time domain and one subcarrier in the frequency domain.

[0083] (8) Demodulation reference signal (DMRS): A reference signal used to recover a received signal. The DMRS is a signal known to the receiving end. The receiving end can determine the fading characteristics of the wireless channel, i.e., the channel coefficients of the wireless channel, based on the received signal and the known DMRS signal, to recover the received signal.

[0084] (9) Accuracy: Used to describe the error between the perception result and the ideal true result. Taking distance perception as an example, the distance between the perceived target and the perception device obtained through perception is 6 m, while the true situation is that the distance between the perceived target and the perception device is 5 m, and the perception error is 1 m, which is also the accuracy of 1 m.

[0085] (10) Resolution: Used to describe the minimum ability of perception to distinguish two different targets. Taking distance perception as an example, a distance resolution of 1 m should be understood as that when the distance between two perceived targets is greater than or equal to 1 m, the perception device can distinguish that there are two targets; when the distance between two perceived targets is less than 1 m, the perception device cannot distinguish that there are two targets.

[0086] (11) Physical downlink control channel (PDCCH): The PDCCH channel is a set of physical resource elements on which PDCCHs are carried, which carry scheduling and other control information, including transport format, resource allocation, uplink scheduling grants, power control, and uplink retransmission information.

[0087] (12) Downlink control information (DCI): DCI is carried by PDCCH and is used to schedule the time-frequency resource location and size of physical channels or reference signals, or to indicate multi-antenna configuration information, etc.

[0088] (13) Resource element group (REG): REG is a physical resource unit occupying one OFDM symbol in the time domain and one resource block in the frequency domain. One REG includes 12 REs.

[0089] 2. Configuration of PDCCH

[0090] A control resource set (CORESET) is a set of physical resources, including the frequency domain resources occupied by PDCCH and the number of OFDM symbols occupied by PDCCH (i.e., the 5G NR system can encapsulate the frequency band occupied by PDCCH in the frequency domain and the number of OFDM symbols occupied in the time domain, etc., in the CORESET). The CORESET is composed of multiple resource blocks (RBs) in the frequency domain (specifically, the CORESET occupies an integer multiple of 6 RBs in the frequency domain, which is represented by 45 bits, with the highest bit representing the lowest frequency in the configured BWP, 1 indicating occupation, and 0 representing non-occupation) and 1-3 OFDM symbols in the time domain, and can be located at any position in a slot. The size and location of the time-frequency resources occupied by the CORESET can be semi-statically configured according to a high-level parameter.

[0091] A control-channel element (CCE) is a basic unit for constructing a PDCCH. One CCE corresponds to 6 REGs. Each CCE in a CORESET has a corresponding index number, and each CCE index number has a corresponding relationship with the index numbers of the 6 REGs it maps to. For example, as shown in FIG. 3A, the CORESET includes 24 REGs, of which the REGs with index numbers 0-5 correspond to CCE1, the REGs with index numbers 6-11 correspond to CCE2, the REGs with index numbers 12-17 correspond to CCE3, and the REGs with index numbers 18-23 correspond to CCE4. In addition to the above-described correspondence, other correspondence between the index numbers of the REGs and the index numbers of the CCEs can also be used, which is not limited in the embodiments of the present application.

[0092] For one PDCCH, it is composed of one or more CCEs, and the number of allocated CCEs is different according to different aggregation levels (AL). The aggregation level refers to the number of CCEs that constitute a PDCCH, that is, a PDCCH is composed of K CCEs, and the aggregation level of the PDCCH is K. Generally, the higher the aggregation level of a PDCCH, the better the demodulation performance, but the more control resources it occupies. In the NR system, the aggregation levels supported by the PDCCH are 1, 2, 4, 8, or 16, and different aggregation levels correspond to different numbers of consecutive CCEs occupied by the PDCCH, as shown in Table 1 below:

[0093] Table 1

[0094] A candidate PDCCH (PDCCH candidate) refers to a PDCCH to be blindly detected (i.e., a candidate PDCCH). Since the aggregation level of the PDCCH actually transmitted by the network device is variable over time, and since there is no related signaling to inform the terminal device of the aggregation level of the currently transmitted PDCCH and the information type of the currently transmitted information, the terminal device needs to blindly detect the PDCCH in different aggregation levels. For example, assuming that the aggregation levels are set to 1, 2, and 4, the terminal device first blindly detects all candidate PDCCHs with an aggregation level of 1, and if the detection is successful, the blind detection ends; if all the detections fail, the terminal device further blindly detects all candidate PDCCHs with an aggregation level of 2, and if the detection is successful, the blind detection ends; if all the detections fail, the terminal device further blindly detects all candidate PDCCHs with an aggregation level of 4, and so on. The detection method is only an example of the present application, and the terminal device can also use other methods for detection, which is not limited in the present application.

[0095] The search space refers to a set of candidate PDCCHs under different aggregation levels, specifically including a PDCCH candidate set under different aggregation levels, and can indicate the starting OFDM symbol position of the time domain resource occupied by the PDCCH and the PDCCH monitoring period and other information (i.e., the 5G NR system encapsulates the PDCCH starting OFDM symbol number and the PDCCH monitoring period and other information in the search space). Each PDCCH candidate set in each group has the same CCE aggregation level, the search space uses a 14-bit bitmap to indicate the starting symbol position of the PDCCH, and also indicates the number of blind detection candidate sets under each aggregation level and the DCI format of blind detection.

[0096] Exemplarily, as shown in FIG. 3B, it is assumed that the aggregation levels indicated by the search space are 1, 2, 4, and 8 respectively, the number of candidate PDCCHs under the aggregation level 1 is 4, the number of candidate PDCCHs under the aggregation level 2 is 4, the number of candidate PDCCHs under the aggregation level 4 is 2, and the number of candidate PDCCHs under the aggregation level 8 is 2; and the number of CCEs occupied by the CORESET corresponding to the search space is 16. In the search space:

[0097] The candidate PDCCHs under the aggregation level 1 are 4: the first candidate PDCCH occupies CCE0, the second candidate PDCCH occupies CCE4, the third candidate PDCCH occupies CCE8, and the fourth candidate PDCCH occupies CCE12;

[0098] The candidate PDCCHs under the aggregation level 2 are 4: the first candidate PDCCH occupies CCE0 and CCE1, the second candidate PDCCH occupies CCE4 and CCE5, the third candidate PDCCH occupies CCE8 and CCE9, and the fourth candidate PDCCH occupies CCE12 and CCE13;

[0099] The candidate PDCCHs under the aggregation level 4 are 2: the first candidate PDCCH occupies CCE0-CCE3, and the second candidate PDCCH occupies CCE8-CCE11;

[0100] The candidate PDCCHs under the aggregation level 8 are 2: the first candidate PDCCH occupies CCE0-CCE7, and the second candidate PDCCH occupies CCE8-CCE15.

[0101] Further, the search space can be divided into a common search space (CSS) and a UE-specific search space (USS), and the configurations of different types of search spaces are as shown in Table 2.

[0102] Table 2

[0103] The PDCCH of the CSS is mainly used to indicate receiving system messages, random access responses, and paging messages, etc.; and the PDCCH of the USS is used to indicate network device scheduling uplink / downlink data. Configuration information of the search space is shown in Table 3:

[0104] Table 3

[0105] It can be understood that, according to the current search space and the CORESET associated therewith, the PDCCH time-frequency resource scheduling situation can be determined. The monitoring parameters and the starting symbol position are determined by the search space, and the symbol quantity and the frequency domain resource (frequency domain scheduling range) are defined by the CORESET associated with the search space.

[0106] Exemplarily, as shown in FIG. 3C, FIG. 3C is a schematic diagram of a candidate PDCCH time domain position provided by an embodiment of the present application. In the search space, the detection period is 5 slots, the slot offset is 1 slot, the slot quantity is 1 slot, and the symbol starting position is symbol 0 and symbol 7. The time domain symbol length occupied by the CORESET associated with the search space is 2 (i.e., one CORESET occupying 2 OFDM symbols). Then, the terminal device starts to monitor at symbol 0 and symbol 7 in the first slot of every 5 slots, and each time monitors two symbols, that is, detects the PDCCH on the CORESET corresponding to OFDM symbol 0, OFDM symbol 1, OFDM symbol 7 and OFDM symbol 8 in slot 1 in each detection period.

[0107] The accurate position of the PDCCH in the time domain is derived from the search space, but the terminal device only knows that the PDCCH will be sent in the RB range provided by the CORESET, but does not know which RBs are used. Therefore, it is necessary to further search the PDCCH information on the CORESET according to different radio network temporary identifier (RNTI) types in different search spaces, that is, to obtain and determine the CCE index of each PDCCH in the CORESET, that is, the starting position and the quantity of the CCE, by continuously demodulating the PDCCH candidate set, and the specific CCE occupied is determined by the search space function. This process is also called PDCCH blind detection. Specifically, the terminal device can calculate the CCE position occupied by the candidate PDCCH under different aggregation levels by using the following formula when performing blind detection:

[0108] For the search space s associated with the CORESET p, the slot CSS The occupied CCE is obtained by the following formula (1):

[0109] In formula (1), L represents an aggregation level, L can take {4, 8, 16} for CSS; L can take {1, 2, 4, 8, 16} for USS; μ represents a subcarrier spacing; s represents an index of a search space; f represents a frame number;

[0110] represents a frequency domain starting position of a PDCCH candidate set, for CSS, for USS, Y p,-1 = n RNTI ≠ 0, D = 65537; for A p A0= 39827 when p mod 3 = 0; A0= 39829 when p mod 3 = 1; A0= 39839 when p mod 3 = 2;

[0111] N CCE,p represents the number of CCEs in CORESET p;

[0112] n CI represents a cross-carrier indication, if there is cross-carrier scheduling, its value is given by a high layer parameter to avoid frequency domain conflict as much as possible when scheduling PDCCH candidate sets of different subcarrier spacings. If there is no cross-carrier scheduling or for CSS, n CI = 0;

[0113] represents a PDCCH candidate set address, s represents an index of a search space; represents the number of PDCCH candidate sets corresponding to n CI for an aggregation degree of L;

[0114] represents the number of candidate sets for an aggregation degree of L, for CSS, for USS, is the maximum value of n CI

[0115] ​​In the current communication mode, the network device can configure transmission parameters of the PDCCH for the terminal device according to the current coverage requirement, including parameters such as the aggregation level of the PDCCH, the CORESET, and the search space. The network device can send the PDCCH to the terminal device according to the transmission parameters, and correspondingly, the terminal device can also receive the PDCCH from the network device according to the transmission parameters.

[0116] Since the network device does not distinguish the transmission parameters of the PDCCH configured in the communication mode and the sensing mode (that is, the network device configures the transmission parameters of the PDCCH in the same way in the communication mode and the sensing mode), when switching from the communication mode to the sensing mode, the sensing mode continues to use the transmission parameters of the PDCCH configured in the communication mode, which may result in a situation that the transmission power is damaged, the transmission energy is reduced, and thus the downlink coverage performance in the sensing mode is reduced, which cannot maintain the consistency of the coverage performance in the sensing mode and the coverage performance in the communication mode. When switching from the sensing mode to the communication mode, the communication mode continues to use the transmission parameters of the PDCCH configured in the sensing mode, which may also result in a situation that the transmission power is too large, causing resource waste in the communication mode.

[0117] Therefore, in order to improve the downlink coverage performance in the sensing mode when switching from the communication mode to the sensing mode, and to reduce resource waste in the communication mode when switching from the sensing mode to the communication mode, the present application provides an information configuration method and a communication device. The information configuration method and the communication device provided by the embodiments of the present application are described in detail below.

[0118] FIG. 4 is a flowchart of an information configuration method provided by an embodiment of the present application. As shown in FIG. 4, the information configuration method includes the following steps S401-S403. The method execution subject shown in FIG. 4 can be a terminal device and a network device. Alternatively, the method execution subject shown in FIG. 4 can be a chip in the terminal device and a chip in the network device, which is not limited in the embodiments of the present application. FIG. 4 takes the terminal device and the network device as the method execution subject for example. The terminal device and the network device can support the communication mode and the sensing mode.

[0119] S401, the network device sends first information and second information to the terminal device; the first information is used to configure transmission parameters of a first PDCCH in the communication mode, the transmission parameters of the first PDCCH including a first aggregation level of the first PDCCH; the second information is used to configure transmission parameters of a second PDCCH in the sensing mode, the transmission parameters of the second PDCCH including a second aggregation level of the second PDCCH; the second aggregation level is greater than the first aggregation level. Correspondingly, the terminal device receives the first information and the second information from the network device.

[0120] S402, in the communication mode, the network device sends the first PDCCH to the terminal device based on the transmission parameter of the first PDCCH. Correspondingly, in the communication mode, the terminal device receives the first PDCCH from the network device based on the transmission parameter of the first PDCCH.

[0121] S403, in the sensing mode, the network device sends the second PDCCH to the terminal device based on the transmission parameter of the second PDCCH. Correspondingly, in the sensing mode, the terminal device receives the second PDCCH from the network device based on the transmission parameter of the second PDCCH.

[0122] In the embodiments of the present application, the network device can configure a set of PDCCH transmission parameters in the communication mode (i.e. the first PDCCH transmission parameter) to the terminal device and a set of PDCCH transmission parameters in the sensing mode (i.e. the second PDCCH transmission parameter) to the terminal device, to realize the separate configuration of the PDCCH transmission parameters in the communication mode and the sensing mode. The PDCCH transmission parameters here can include the aggregation level of the PDCCH, the time-frequency domain position in the CORESET, the search space and other information. Generally, the higher the aggregation level of a PDCCH, the better the demodulation performance, but the more control resources it occupies.

[0123] In this way, the network device will send the first PDCCH to the terminal device using the first PDCCH transmission parameter in the communication mode, and correspondingly, the terminal device will also perform blind detection using the first PDCCH transmission parameter in the communication mode, thereby receiving the first PDCCH from the network device. Similarly, the network device will send the second PDCCH to the terminal device using the second PDCCH transmission parameter in the sensing mode, and correspondingly, the terminal device will also perform blind detection using the second PDCCH transmission parameter in the sensing mode, thereby receiving the second PDCCH from the network device. Since the aggregation level of the PDCCH in the sensing mode needs to be improved relative to the aggregation level of the PDCCH in the communication mode, i.e. it is necessary to ensure that the aggregation level of the PDCCH in the sensing mode is greater than the aggregation level of the PDCCH in the communication mode (the second aggregation level of the second PDCCH is greater than the first aggregation level of the first PDCCH), so as to improve the coverage performance in the sensing mode and to make the coverage performance in the sensing mode consistent with the coverage performance in the communication mode as much as possible. Wherein, the second aggregation level being greater than the first aggregation level can also be understood as the second aggregation level being N times the first aggregation level, N being a number greater than 1.

[0124] In this way, for example, as shown in FIG. 5, the network device transmits the first PDCCH by using the transmission parameter of the first PDCCH in the communication mode (i.e., when the network device transmits the communication time slot); when the network device switches from the communication mode to the sensing mode (i.e., when the network device changes from transmitting the communication time slot to transmitting the sensing time slot), the network device transmits the second PDCCH by using the transmission parameter of the second PDCCH, so that the aggregation level of the PDCCH in the sensing mode is improved, which is beneficial to improve the downlink coverage performance in the sensing mode; when the network device switches from the sensing mode to the communication mode (i.e., when the network device changes from transmitting the sensing time slot to transmitting the communication time slot), the network device further transmits the first PDCCH by using the transmission parameter of the first PDCCH, so that the aggregation level of the PDCCH in the communication mode is reduced, which is beneficial to reduce the resource waste in the communication mode.

[0125] In a possible implementation, since the second aggregation level needs to be greater than the first aggregation level, the time-frequency domain position of the CORESET, the search space and other information included in the transmission parameter of the PDCCH also need to be adjusted accordingly. The following describes these information in detail:

[0126] (1) The size of the time-frequency resource occupied by the second PDCCH is greater than the size of the time-frequency resource occupied by the first PDCCH.

[0127] In a specific implementation, when switching from the communication mode to the sensing mode, in order to ensure the coverage performance in the sensing mode, the aggregation level of the PDCCH in the sensing mode needs to be improved compared with the aggregation level of the PDCCH in the communication mode, that is, the second aggregation level of the second PDCCH needs to be greater than the first aggregation level of the first PDCCH, and accordingly, the size of the time-frequency resource occupied by the second PDCCH also needs to be improved compared with the size of the time-frequency resource occupied by the first PDCCH. Similarly, when switching from the sensing mode to the communication mode, in order to reduce the resource waste in the communication mode, the aggregation level of the PDCCH in the communication mode needs to be reduced compared with the aggregation level of the PDCCH in the sensing mode, that is, the first aggregation level of the first PDCCH needs to be less than the second aggregation level of the second PDCCH, and accordingly, the size of the time-frequency resource occupied by the first PDCCH also needs to be reduced compared with the size of the time-frequency resource occupied by the second PDCCH.

[0128] Optionally, since the aggregation level corresponds to the number of CCEs, the number of CCEs occupied by the second PDCCH is also greater than the number of CCEs occupied by the first PDCCH.

[0129] (2) The transmission parameter of the first PDCCH further comprises a first control resource set (i.e., a first CORECET), and the transmission parameter of the second PDCCH further comprises a second control resource set (i.e., a second CORECET), and the number of RBs occupied by the second CORECET is greater than or equal to the number of RBs occupied by the first CORECET.

[0130] The first CORECET can be used to indicate the frequency domain resource occupied by the first PDCCH, and the second CORECET can be used to indicate the frequency domain resource occupied by the second PDCCH.

[0131] In a specific implementation, when switching from the communication mode to the sensing mode, although the aggregation level of the PDCCH in the sensing mode is improved compared with the aggregation level of the PDCCH in the communication mode, the time-frequency resource occupied by the second CORECET can be improved or kept the same compared with the time-frequency resource occupied by the first CORECET. Similarly, when switching from the sensing mode to the communication mode, although the aggregation level of the PDCCH in the communication mode is reduced compared with the aggregation level of the PDCCH in the sensing mode, the time-frequency resource occupied by the first CORECET can be reduced or kept the same compared with the time-frequency resource occupied by the second CORECET.

[0132] That is, although the aggregation level of the second PDCCH is greater than the aggregation level of the first PDCCH, the time-frequency resource occupied by the first CORECET can be greater than or equal to the time-frequency resource occupied by the second CORECET. Specifically, the number of RBs occupied by the second CORECET can be greater than or equal to the number of RBs occupied by the first CORECET. It can be understood that when the aggregation level of the second PDCCH is greater than the aggregation level of the first PDCCH, the resource occupied by the PDCCH in the sensing mode becomes more, and therefore, in order to guarantee the resource allocation of the PDCCH as much as possible, the number of RBs occupied by the second control resource set can be greater than the number of RBs occupied by the first control resource set; of course, if the number of RBs occupied by the first control resource set in the communication mode can meet the resource occupied by the PDCCH in the sensing mode, the number of RBs occupied by the second control resource set can be equal to the number of RBs occupied by the first control resource set, so as to save the scheduling resource. Based on this mode, it is beneficial to guarantee the rationality of the resource allocation.

[0133] Optionally, the number of CCEs occupied by the second CORESET can be greater than or equal to the number of CCEs occupied by the first CORESET. It can be understood that when the aggregation level of the second PDCCH is greater than the aggregation level of the first PDCCH, the resources occupied by the PDCCH in the sensing mode become more, and therefore, in order to ensure the resource allocation of the PDCCH as much as possible, the number of CCEs occupied by the second control resource set can be greater than the number of CCEs occupied by the first control resource set; of course, if the CCEs occupied by the first control resource set in the communication mode can meet the resources occupied by the PDCCH in the sensing mode, the number of CCEs occupied by the second control resource set can also be equal to the number of CCEs occupied by the first control resource set, thereby saving scheduling resources. Based on this mode, it is beneficial to ensure the rationality of resource allocation.

[0134] (3) The transmission parameter of the first PDCCH further includes one or more first search spaces, the first CORESET corresponds to the one or more first search spaces, and the first search space indicates the number of candidate first PDCCHs under each first aggregation level; the transmission parameter of the second PDCCH further includes one or more second search spaces, the second CORESET corresponds to the one or more second search spaces, and the second search space indicates the number of candidate second PDCCHs under each second aggregation level; the number of candidate first PDCCHs under the first aggregation level can be kept the same as the number of candidate second PDCCHs under the second aggregation level.

[0135] For example, it is assumed that the network device configures the first aggregation level of the first PDCCH in the transmission parameter of the first PDCCH, which are 1, 2, and 4 respectively; the first CORESET corresponds to two first search spaces, which are first search space 1 and first search space 2. Taking the first search space 1 as an example, in the first search space 1, there are two candidate first PDCCHs with a first aggregation level of 1, two candidate first PDCCHs with a first aggregation level of 2, and four candidate first PDCCHs with a first aggregation level of 4.

[0136] The network device configures the second aggregation level of the second PDCCH in the transmission parameter of the second PDCCH, which are 2, 4, and 8 respectively; the second CORESET corresponds to two second search spaces, which are second search space 1 and second search space 2. Taking the second search space 1 as an example, there are two candidate second PDCCHs with a second aggregation level of 2, two candidate second PDCCHs with a second aggregation level of 4, and four candidate second PDCCHs with a second aggregation level of 8.

[0137] Therefore, the number of the first PDCCHs of the first aggregation level 1 in the first search space 1 can be kept the same as the number of the second PDCCHs of the second aggregation level 2 in the second search space 1. The number of the first PDCCHs of the first aggregation level 2 in the first search space 1 can be kept the same as the number of the second PDCCHs of the second aggregation level 4 in the first search space 1. The number of the first PDCCHs of the first aggregation level 4 in the first search space 1 can be kept the same as the number of the second PDCCHs of the second aggregation level 8 in the second search space 1.

[0138] In a possible implementation, the following is described in detail taking an example in which the second aggregation level is N times of the first aggregation level, where N is an integer greater than 1. Of course, N can also be other numbers (for example, a decimal number) greater than 1, and the N greater than 1 herein is only an example. When the second aggregation level is N times of the first aggregation level, the following describes in detail other information that needs to be adjusted:

[0139] (1) The size of the time-frequency resource occupied by the second PDCCH is N times of the size of the time-frequency resource occupied by the first PDCCH.

[0140] Optionally, since the aggregation level corresponds to the number of CCEs, the number of CCEs occupied by the second PDCCH is also N times of the number of CCEs occupied by the first PDCCH.

[0141] (2) The number of RBs occupied by the second CORESET is R times of the number of RBs occupied by the first CORESET, R is greater than 1, and R is the same as or different from N; or the number of RBs occupied by the second CORESET is equal to the number of RBs occupied by the first CORESET. That is, it can be understood that the number of RBs occupied by the second CORESET can be greater than or equal to the number of RBs occupied by the first CORESET.

[0142] Optionally, the number of CCEs occupied by the second CORESET is R times of the number of CCEs occupied by the first CORESET; or the number of CCEs occupied by the second CORESET is equal to the number of CCEs occupied by the first CORESET. That is, it can be understood that the number of CCEs occupied by the second CORESET can be greater than or equal to the number of CCEs occupied by the first CORESET.

[0143] (3) The first CORESET corresponds to one or more first search spaces, which indicate the number of first PDCCH candidates at each first aggregation level; the second CORESET corresponds to one or more second search spaces, which indicate the number of second PDCCH candidates at each second aggregation level; the number of first PDCCH candidates at each first aggregation level can be kept the same as the number of second PDCCH candidates at each second aggregation level.

[0144] Optionally, the number of time-domain OFDM symbols occupied by the first CORESET can be kept the same as the number of time-domain OFDM symbols occupied by the second CORESET. Of course, the number of time-domain OFDM symbols occupied by the first CORESET can also be greater than the number of time-domain OFDM symbols occupied by the second CORESET.

[0145] It should be noted that the terminal device calculates the CCE positions occupied by the PDCCH candidates at different aggregation levels in the same way in the communication mode and in the sensing mode, i.e., in the sensing mode, the CCE positions occupied by the PDCCH candidates at different aggregation levels can also be calculated by using the above formula (1).

[0146] Based on the above description, for example, as shown in FIG. 6A, the network device transmits the first PDCCH by using the transmission parameters of the first PDCCH in the communication mode (i.e., when the network device transmits the communication time slot), at this time, the aggregation level of the first PDCCH in the first search space is 8, the number of RBs occupied by the first CORESET is 96, the number of CCEs occupied by the first CORESET is 32, the number of time-domain OFDM symbols occupied by the first CORESET is 2, and the number of first PDCCH candidates at the aggregation level of 8 in the first search space is 3 (i.e., the first PDCCH candidate 1, the first PDCCH candidate 2, and the first PDCCH candidate 3). When the network device switches from the communication mode to the sensing mode (i.e., when the network device changes from transmitting the communication time slot to transmitting the sensing time slot), as shown in FIG. 6B, the network device transmits the second PDCCH by using the transmission parameters of the second PDCCH, at this time, the aggregation level of the second PDCCH in the second search space is 16, the number of RBs occupied by the second CORESET is 192, the number of CCEs occupied by the first CORESET is 64, the number of time-domain OFDM symbols occupied by the first CORESET is still 2, and the number of first PDCCH candidates at the aggregation level of 16 in the first search space is still 3 (i.e., the second PDCCH candidate 1, the second PDCCH candidate 2, and the second PDCCH candidate 3).

[0147] Exemplarily, as shown in FIG. 7A, the network device sends the second PDCCH by using the transmission parameter of the second PDCCH in the sensing mode (i.e., when the network device sends the sensing time slot), the aggregation level of the second PDCCH in the second search space is 8, the number of RBs occupied by the second CORESET is 96, the number of CCEs occupied by the first CORESET is 32, the number of time domain OFDM symbols occupied by the first CORESET is 2, and the number of first PDCCHs with the aggregation level of 8 in the first search space is 3 (i.e., the second PDCCH 1, the second PDCCH 2, and the second PDCCH 3). When the network device switches from the sensing mode to the communication mode (i.e., when the network device changes from sending the sensing time slot to sending the communication time slot), the network device sends the first PDCCH by using the transmission parameter of the first PDCCH, as shown in FIG. 7B, the aggregation level of the first PDCCH in the first search space is 4, the number of RBs occupied by the first CORESET is 48, the number of CCEs occupied by the first CORESET is 16, the number of time domain OFDM symbols occupied by the first CORESET is still 2, and the number of first PDCCHs with the aggregation level of 4 in the first search space is still 3 (i.e., the first PDCCH 1, the first PDCCH 2, and the first PDCCH 3).

[0148] In a possible implementation, the number of CCEs occupied by the second CORECET can be N times the number of CCEs occupied by the first CORECET; or the number of CCEs occupied by the second CORECET can also be equal to the number of CCEs occupied by the first CORECET. The two cases are described below:

[0149] Case one: when the number of CCEs occupied by the first CORECET is less than the first value, the number of CCEs occupied by the second CORECET is R times the number of CCEs occupied by the first CORECET. Wherein, R is greater than 1, and R is the same as or different from N.

[0150] Case two: when the number of CCEs occupied by the first CORECET is greater than or equal to the first value, the number of CCEs occupied by the second CORECET is equal to the number of CCEs occupied by the first CORECET.

[0151] At this time, the number of RBs occupied by the second CORECET is also equal to the number of RBs occupied by the first CORECET.

[0152] Wherein, the first value is N times the maximum value in the total number of CCEs occupied by all candidates of the first PDCCH in each first aggregation level in the first search space.

[0153] Optionally, the first value satisfies: wherein, denotes the maximum value in the total number of CCEs occupied by all candidate first PDCCHs under each first aggregation level in the first search space; L denotes the first aggregation level corresponding to the maximum value, denotes the number of candidate first PDCCHs under the first aggregation level corresponding to the maximum value.

[0154] Taking the first search space 1 as an example, in the first search space 1, the number of candidate first PDCCHs of the first aggregation level 1 is 2, the number of candidate first PDCCHs of the first aggregation level 2 is 2, and the number of candidate first PDCCHs of the first aggregation level 4 is 4. Then the total number of CCEs occupied by all candidate first PDCCHs of the first aggregation level 1 is 2, the total number of CCEs occupied by all candidate first PDCCHs of the first aggregation level 2 is 4, and the total number of CCEs occupied by all candidate first PDCCHs of the first aggregation level 4 is 16, so the maximum value in the total number of CCEs occupied by all candidate first PDCCHs under each first aggregation level in the first search space 1 is 16, that is, 16. At this time, L is 4, 4. Assuming that N is 2, the first value is 32.

[0155] Specifically, it can be understood that when the aggregation level of the second PDCCH is greater than the aggregation level of the first PDCCH, the number of CCEs occupied by the second CORESET and the number of CCEs occupied by the first CORESET need to satisfy the following formula (2):

[0156] In formula (2), N CCE,p,sense denotes the number of CCEs occupied by the second CORESET, N CCE,p denotes the number of CCEs occupied by the first CORESET, N and R denote the multiples, and N and R can be the same or different; denotes the first value. Wherein, denotes the maximum value in the total number of CCEs occupied by all candidate first PDCCHs under each first aggregation level in the first search space; L denotes the first aggregation level corresponding to the maximum value, denotes the number of candidate first PDCCHs under the first aggregation level corresponding to the maximum value. Based on this manner, it is beneficial to improve the reliability and rationality of setting the number of CCEs occupied by the second control resource set.

[0157] Exemplarily, as shown in FIG. 8A, the network device transmits the first PDCCH by using the transmission parameter of the first PDCCH in the communication mode (i.e., when the network device transmits the communication time slot), at this time, the aggregation level of the first PDCCH in the first search space is 4, the number of RBs occupied by the first CORESET is 96, the number of CCEs occupied by the first CORESET is 32, the number of time domain OFDM symbols occupied by the first CORESET is 2, and the number of candidate first PDCCHs with the aggregation level of 4 in the first search space is 4 (i.e., candidate first PDCCH 1, candidate first PDCCH 2, candidate first PDCCH 3, and candidate first PDCCH 4).

[0158] When the network device switches from the communication mode to the sensing mode (i.e., when the network device changes from transmitting the communication time slot to transmitting the sensing time slot), the network device transmits the second PDCCH by using the transmission parameter of the second PDCCH, assuming that N is 2, R is 2, and the first value is 32, it can be determined by calculation that the number of CCEs occupied by the first CORESET (i.e., 32) is equal to the first value, that is, the condition is met. At this time, the number of CCEs occupied by the second CORESET is equal to the number of CCEs occupied by the first CORESET, and the number of RBs occupied by the second CORESET can also be equal to the number of RBs occupied by the first CORESET. That is, as shown in FIG. 8B, at this time, the aggregation level of the second PDCCH in the second search space is 8, the number of RBs occupied by the second CORESET is still 96, the number of CCEs occupied by the first CORESET is still 32, the number of time domain OFDM symbols occupied by the first CORESET is still 2, and the number of candidate first PDCCHs with the aggregation level of 8 in the first search space is still 4 (i.e., candidate second PDCCH 1, candidate second PDCCH 2, candidate second PDCCH 3, and candidate second PDCCH 4).

[0159] It can be seen that, based on the method described in FIG. 4, the network device configures a set of transmission parameters of the PDCCH in the communication mode (i.e., the transmission parameters of the first PDCCH) to the terminal device and configures a set of transmission parameters of the PDCCH in the sensing mode (i.e., the transmission parameters of the second PDCCH) to the terminal device, so as to realize the separate configuration of the transmission parameters of the PDCCH in the communication mode and the sensing mode. Since the aggregation level of the PDCCH in the sensing mode needs to be improved relative to the aggregation level of the PDCCH in the communication mode, that is, it is necessary to ensure that the aggregation level of the PDCCH in the sensing mode is greater than the aggregation level of the PDCCH in the communication mode (the second aggregation level of the second PDCCH is greater than the first aggregation level of the first PDCCH), so that when switching from the communication mode to the sensing mode, it is beneficial to improve the downlink coverage performance in the sensing mode, so as to make the downlink coverage performance in the sensing mode consistent with the downlink coverage performance in the communication mode as much as possible; when switching from the sensing mode to the communication mode, the aggregation level of the PDCCH in the communication mode is reduced, which is beneficial to reduce the resource waste in the communication mode.

[0160] Please refer to FIG. 9, which shows a structural schematic diagram of a communication apparatus 900 according to an embodiment of the present application. The communication apparatus shown in FIG. 9 can be a terminal device or a network device, or a device that can be used in matching with a terminal device or a network device. The terminal device and the network device can support the communication mode and the sensing mode. Specifically, as shown in FIG. 9, the communication apparatus 900 can include a communication unit 901 and a processing unit 902. The processing unit 902 is configured to perform data processing. The communication unit 901 is configured to perform communication. Optionally, the communication unit 901 is integrated with a receiving unit and a sending unit. The communication unit 901 can also be referred to as a transceiver unit. Alternatively, the communication unit 901 can be split into a receiving unit and a sending unit.

[0161] In an implementation, the communication apparatus 900 can be a terminal device, or a device in a terminal device, or a device that can be used in matching with a terminal device, wherein:

[0162] The communication unit 901 is configured to receive first information and second information from a network device; the first information is used to configure transmission parameters of a first PDCCH in a communication mode, the transmission parameters of the first PDCCH including a first aggregation level of the first PDCCH; the second information is used to configure transmission parameters of a second PDCCH in a sensing mode, the transmission parameters of the second PDCCH including a second aggregation level of the second PDCCH; the second aggregation level is greater than the first aggregation level;

[0163] The communication unit 901 is further configured to receive, in the communication mode, the first PDCCH from the network device based on the transmission parameter of the first PDCCH.

[0164] The communication unit 901 is further configured to receive, in the sensing mode, the second PDCCH from the network device based on the transmission parameter of the second PDCCH.

[0165] In a possible implementation, a size of a time-frequency resource occupied by the second PDCCH is greater than a size of a time-frequency resource occupied by the first PDCCH.

[0166] In a possible implementation, the transmission parameter of the first PDCCH further includes a first control resource set used to indicate a frequency domain resource occupied by the first PDCCH, and the transmission parameter of the second PDCCH further includes a second control resource set used to indicate a frequency domain resource occupied by the second PDCCH, and a quantity of resource blocks (RBs) occupied by the second control resource set is greater than or equal to a quantity of RBs occupied by the first control resource set.

[0167] In a possible implementation, a quantity of control channel elements (CCEs) occupied by the second control resource set is greater than or equal to a quantity of CCEs occupied by the first control resource set.

[0168] In a possible implementation, the second aggregation level is N times of the first aggregation level, where N is an integer greater than 1.

[0169] In a possible implementation, a quantity of RBs occupied by the second control resource set is R times of a quantity of RBs occupied by the first control resource set, where R is greater than 1, and R is the same as or different from N, or the quantity of RBs occupied by the second control resource set is equal to the quantity of RBs occupied by the first control resource set.

[0170] In a possible implementation, the transmission parameter of the first PDCCH further includes one or more first search spaces, the first control resource set corresponds to the one or more first search spaces, and the first search space indicates a number of candidate first PDCCHs at each first aggregation level; the transmission parameter of the second PDCCH further includes one or more second search spaces, the second control resource set corresponds to the one or more second search spaces, and the second search space indicates a number of candidate second PDCCHs at each second aggregation level; when the number of CCEs occupied by the first control resource set is less than a first value, the number of CCEs occupied by the second control resource set is R times the number of CCEs occupied by the first control resource set, R is greater than 1, R is the same as or different from N, and the first value is N times a maximum value in a total number of CCEs occupied by all candidate first PDCCHs at each first aggregation level in the first search space.

[0171] In a possible implementation, when the number of CCEs occupied by the first control resource set is greater than or equal to the first value, the number of CCEs occupied by the second control resource set is equal to the number of CCEs occupied by the first control resource set.

[0172] In a possible implementation, the first value satisfies: wherein the represents the maximum value in a total number of CCEs occupied by all candidate first PDCCHs at each first aggregation level in the first search space, the L represents the first aggregation level corresponding to the maximum value, and the represents the number of candidate first PDCCHs at the first aggregation level corresponding to the maximum value.

[0173] In an implementation, the communication apparatus 900 can be a network device, a device in a network device, or a device capable of being matched with a network device, and in this case:

[0174] The communication unit 901 is configured to send first information and second information to a terminal device, the first information is used to configure a transmission parameter of a first PDCCH in a communication mode, the transmission parameter of the first PDCCH includes a first aggregation level of the first PDCCH, and the second information is used to configure a transmission parameter of a second PDCCH in a sensing mode, the transmission parameter of the second PDCCH includes a second aggregation level of the second PDCCH, and the second aggregation level is greater than the first aggregation level;

[0175] The communication unit 901 is further configured to send, in the communication mode, the first PDCCH to the terminal device based on the transmission parameter of the first PDCCH;

[0176] The communication unit 901 is further configured to transmit, in the sensing mode, the second PDCCH to the terminal device based on the transmission parameter of the second PDCCH.

[0177] In a possible implementation, a size of a time-frequency resource occupied by the second PDCCH is greater than a size of a time-frequency resource occupied by the first PDCCH.

[0178] In a possible implementation, the transmission parameter of the first PDCCH further includes a first control resource set, and the first control resource set is used to indicate a frequency domain resource occupied by the first PDCCH; the transmission parameter of the second PDCCH further includes a second control resource set, and the second control resource set is used to indicate a frequency domain resource occupied by the second PDCCH; and a number of resource blocks (RBs) occupied by the second control resource set is greater than or equal to a number of RBs occupied by the first control resource set.

[0179] In a possible implementation, a number of control channel elements (CCEs) occupied by the second control resource set is greater than or equal to a number of CCEs occupied by the first control resource set.

[0180] In a possible implementation, the second aggregation level is N times of the first aggregation level, and N is an integer greater than 1.

[0181] In a possible implementation, a number of RBs occupied by the second control resource set is R times of a number of RBs occupied by the first control resource set, R is greater than 1, and R is the same as or different from N; or the number of RBs occupied by the second control resource set is equal to the number of RBs occupied by the first control resource set.

[0182] In a possible implementation, the transmission parameter of the first PDCCH further includes one or more first search spaces, the first control resource set corresponds to the one or more first search spaces, and the first search space indicates a number of candidate first PDCCHs in each first aggregation level; the transmission parameter of the second PDCCH further includes one or more second search spaces, the second control resource set corresponds to the one or more second search spaces, and the second search space indicates a number of candidate second PDCCHs in each second aggregation level; when a number of CCEs occupied by the first control resource set is less than a first value, a number of CCEs occupied by the second control resource set is R times of the number of CCEs occupied by the first control resource set; R is greater than 1, R is the same as or different from N, and the first value is N times of a maximum value in a total number of CCEs occupied by all candidate first PDCCHs in each first aggregation level in the first search space.

[0183] In a possible implementation, when the number of CCEs occupied by the first control resource set is greater than or equal to the first value, the number of CCEs occupied by the second control resource set is equal to the number of CCEs occupied by the first control resource set.

[0184] In a possible implementation, the first value satisfies: wherein the denotes the maximum value in the total number of CCEs occupied by all candidates of the first PDCCH under each first aggregation level in the first search space; the L denotes the first aggregation level corresponding to the maximum value, and the denotes the number of candidates of the first PDCCH under the first aggregation level corresponding to the maximum value.

[0185] FIG. 10 shows a structural schematic diagram of another communication apparatus. The communication apparatus 1000 can be a terminal device or a network device in the embodiments of the method, and can also be a chip, a chip system, or a processor, etc. that supports the terminal device or the network device to implement the method. The communication apparatus can be used to implement the method described in the embodiments of the method, and details can be referred to the descriptions in the embodiments of the method.

[0186] The communication apparatus 1000 can include one or more processors 1001. The processor 1001 can be a general purpose processor or a special purpose processor, etc. For example, it can be a baseband processor or a central processing unit. The baseband processor can be used to process a communication protocol and communication data, and the central processing unit can be used to control the communication apparatus (such as a base station, a baseband chip, a terminal, a terminal chip, a DU or a CU, etc.), execute a software program, and process data of the software program.

[0187] Optionally, the communication apparatus 1000 can include one or more memories 1002, and the memories 1002 can have instructions 1004 stored thereon. The instructions can be run on the processor 1001, so that the communication apparatus 1000 performs the method described in the embodiments of the method. Optionally, the memories 1002 can also store data. The processor 1001 and the memories 1002 can be separately arranged or integrated together.

[0188] Optionally, the communication apparatus 1000 can further include a transceiver 1005, an antenna 1006. The transceiver 1005 can be referred to as a transceiving unit, a transceiver, or a transceiving circuit, etc., and is used to implement the transceiving function. The transceiver 1005 can include a receiver and a transmitter. The receiver can be referred to as a receiver or a receiving circuit, etc., and is used to implement the receiving function. The transmitter can be referred to as a transmitter or a transmitting circuit, etc., and is used to implement the transmitting function. The processing unit 902 shown in FIG. 9 can be the processor 1001. The communication unit 901 can be the transceiver 1005.

[0189] In another possible design, the processor 1001 can include a transceiver for implementing the receiving and sending functions. For example, the transceiver can be a transceiver circuit, or an interface, or an interface circuit. The transceiver circuit, interface, or interface circuit for implementing the receiving and sending functions can be separate or integrated together. The transceiver circuit, interface, or interface circuit described above can be used for reading and writing of codes / data, or the transceiver circuit, interface, or interface circuit described above can be used for transmission or transfer of signals.

[0190] In yet another possible design, the processor 1001 can optionally store instructions 1003, which, when executed on the processor 1001, can cause the communication apparatus 1000 to perform the methods described in the above method embodiments. The instructions 1003 can be fixed in the processor 1001, in which case the processor 1001 can be implemented by hardware.

[0191] In yet another possible design, the communication apparatus 1000 can include a circuit, which can implement the functions of sending, receiving, or communicating in the above method embodiments. The processor and transceiver described in the embodiments of the present application can be implemented on an integrated circuit (IC), an analog IC, a radio frequency integrated circuit (RFIC), a mixed-signal IC, an application specific integrated circuit (ASIC), a printed circuit board (PCB), an electronic device, etc. The processor and transceiver can also be manufactured by various IC technologies, such as complementary metal oxide semiconductor (CMOS), n metal-oxide-semiconductor (NMOS), positive channel metal oxide semiconductor (PMOS), bipolar junction transistor (BJT), bipolar CMOS (BiCMOS), silicon germanium (SiGe), gallium arsenide (GaAs), etc.

[0192] The communication apparatus described in the above embodiments can be a terminal device or a network device, but the scope of the communication apparatus described in the embodiments of the present application is not limited thereto, and the structure of the communication apparatus can not be limited by FIG. 10. The communication apparatus can be a standalone device or a part of a larger device. For example, the communication apparatus can be:

[0193] (1) an integrated circuit (IC) or chip or chip system or subsystem;

[0194] (2) a set of one or more ICs, optionally including storage for data or instructions;

[0195] (3) an ASIC, such as a modem system-on-chip (MSM);

[0196] (4) a module that can be embedded within other devices;

[0197] (5) a receiver, terminal, intelligent terminal, cellular telephone, wireless device, handset, mobile unit, vehicle-mounted device, network device, cloud device, artificial intelligence device, etc.;

[0198] (6) other, etc.

[0199] For the case that the communication apparatus can be a chip or chip system, refer to the structural diagram of the chip shown in FIG. 11. The chip 1100 shown in FIG. 11 includes a processor 1101, an interface 1102. Optionally, it can also include a memory 1103. Among them, the number of processors 1101 can be one or more, and the number of interfaces 1102 can be multiple.

[0200] For the case that the chip is used to implement the terminal device or network device in the embodiments of the present application:

[0201] The interface 1102 is configured to receive or output a signal.

[0202] The processor 1101 is configured to perform data processing operations of the terminal device or network device.

[0203] It can be understood that some optional features in the embodiments of the present application can be implemented independently in some scenarios, without relying on other features, such as the scheme currently based on, to solve the corresponding technical problems and achieve the corresponding effects. Also, in some scenarios, it can be combined with other features according to the demand. Correspondingly, the communication apparatus given in the embodiments of the present application can also correspondingly implement these features or functions, which will not be described here.

[0204] It should be understood that the processor in the embodiments of the present application can be an integrated circuit chip with a processing capability of signals. In the implementation process, each step of the method embodiments described above can be completed by an integrated logic circuit of hardware in the processor or an instruction in the form of software. The processor described above can be a general processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components.

[0205] It can be understood that the memory in the embodiments of the present application can be a volatile memory or a non-volatile memory, or can include both volatile and non-volatile memories. Among them, the non-volatile memory can be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically EPROM (EEPROM) or a flash memory. The volatile memory can be a random access memory (RAM) used as an external cache. By way of example and not limitation, many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced SDRAM (ESDRAM), synchlink DRAM (SLDRAM) and direct rambus RAM (DR RAM). It should be noted that the memory of the system and method described herein is intended to include but not limited to these and any other suitable types of memory.

[0206] The present application also provides a computer readable medium, and the computer program or instructions are stored in the storage medium, and when the computer program or instructions are executed by the communication device, the functions of any one of the above method embodiments are realized.

[0207] The application further provides a computer program product including instructions, which, when read and executed by a computer, cause the computer to implement the functions of any of the above method embodiments.

[0208] The application provides a communication system including a terminal device and a network device; wherein the terminal device is configured to implement the method performed by the terminal device in the above embodiments, and the network device is configured to implement the method performed by the network device in the above embodiments.

[0209] The above embodiments can be implemented wholly or partially by software, hardware, firmware, or any combination thereof. When implemented by software, the embodiments can be implemented wholly or partially in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer instructions are loaded and executed on a computer, the computer instructions wholly or partially generate the processes or functions described in the embodiments of the application. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions can be stored in a computer-readable storage medium or transferred from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions can be transferred from one website, computer, server, or data center to another website, computer, server, or data center through a wired (for example, coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (for example, infrared, wireless, microwave, etc.) manner. The computer-readable storage medium can be any available medium accessible by a computer or a data storage device such as a server, data center, etc. including one or more available media sets. The available medium can be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), an optical medium (for example, a high-density digital video disc (DVD)), or a semiconductor medium (for example, a solid state disk (SSD)), etc.

[0210] The above description is merely a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of changes or replacements within the technical range disclosed in the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. An information configuration method characterized by comprising: The method is applied to a terminal device supporting a communication mode and a sensing mode, and the method comprises: receiving first information and second information from a network device; the first information is used for configuring transmission parameters of a first physical downlink control channel (PDCCH) in the communication mode, the transmission parameters of the first PDCCH comprising a first aggregation level of the first PDCCH; the second information is used for configuring transmission parameters of a second PDCCH in the sensing mode, the transmission parameters of the second PDCCH comprising a second aggregation level of the second PDCCH; the second aggregation level is greater than the first aggregation level; in the communication mode, receiving the first PDCCH from the network device based on the transmission parameters of the first PDCCH; in the sensing mode, receiving the second PDCCH from the network device based on the transmission parameters of the second PDCCH.

2. The method of claim 1, wherein, The size of a time-frequency resource occupied by the second PDCCH is greater than the size of a time-frequency resource occupied by the first PDCCH.

3. The method according to claim 1 or 2, characterized in that, The transmission parameters of the first PDCCH further comprise a first control resource set used for indicating a frequency domain resource occupied by the first PDCCH; the transmission parameters of the second PDCCH further comprise a second control resource set used for indicating a frequency domain resource occupied by the second PDCCH; The number of resource blocks (RBs) occupied by the second control resource set is greater than or equal to the number of RBs occupied by the first control resource set.

4. The method of claim 3, wherein, The number of control channel elements (CCEs) occupied by the second control resource set is greater than or equal to the number of CCEs occupied by the first control resource set.

5. The method according to claim 3 or 4, characterized in that, The second aggregation level is N times of the first aggregation level, and the N is an integer greater than 1.

6. The method of claim 5, wherein, The number of RBs occupied by the second control resource set is R times of the number of RBs occupied by the first control resource set, the R being greater than 1, the R being the same as or different from the N; or, the number of RBs occupied by the second control resource set is equal to the number of RBs occupied by the first control resource set.

7. The method according to claim 5 or 6, characterized in that, The transmission parameters of the first PDCCH further comprise one or more first search spaces, the first control resource set corresponding to the one or more first search spaces, the first search space indicating the number of candidate first PDCCHs under each first aggregation level; the transmission parameters of the second PDCCH further comprise one or more second search spaces, the second control resource set corresponding to the one or more second search spaces, the second search space indicating the number of candidate second PDCCHs under each second aggregation level; When the number of CCEs occupied by the first control resource set is less than a first value, the number of CCEs occupied by the second control resource set is R times of the number of CCEs occupied by the first control resource set, the R being greater than 1, the R being the same as or different from the N. The first value is N times of a maximum value in a total number of CCEs occupied by first PDCCHs of all candidates under each first aggregation level in the first search space.

8. The method of claim 7, wherein, When a number of CCEs occupied by the first control resource set is greater than or equal to the first value, a number of CCEs occupied by the second control resource set is equal to the number of CCEs occupied by the first control resource set.

9. The method according to claim 7 or 8, characterized in that, The first value satisfies: wherein the max (L) represents the maximum value in the total number of CCEs occupied by all candidates of each first aggregation level in the first search space; the L represents the first aggregation level corresponding to the maximum value, and the The first value is N times of a maximum value in a total number of CCEs occupied by first PDCCHs of all candidates under each first aggregation level in the first search space.

10. An information configuration method characterized by comprising: The method is applied to a network device supporting a communication mode and a sensing mode, and the method comprises: sending first information and second information to a terminal device; the first information is used for configuring transmission parameters of a first physical downlink control channel (PDCCH) in the communication mode, the transmission parameters of the first PDCCH including a first aggregation level of the first PDCCH; the second information is used for configuring transmission parameters of a second PDCCH in the sensing mode, the transmission parameters of the second PDCCH including a second aggregation level of the second PDCCH; the second aggregation level is greater than the first aggregation level; in the communication mode, sending a first PDCCH to the terminal device based on the transmission parameters of the first PDCCH; in the sensing mode, sending a second PDCCH to the terminal device based on the transmission parameters of the second PDCCH.

11. The method of claim 10, wherein, A size of a time-frequency resource occupied by the second PDCCH is greater than a size of a time-frequency resource occupied by the first PDCCH.

12. The method according to claim 10 or 11, characterized in that, The transmission parameters of the first PDCCH further include a first control resource set used for indicating frequency domain resources occupied by the first PDCCH; the transmission parameters of the second PDCCH further include a second control resource set used for indicating frequency domain resources occupied by the second PDCCH. A number of resource blocks (RBs) occupied by the second control resource set is greater than or equal to a number of RBs occupied by the first control resource set.

13. The method of claim 12, wherein, A number of control channel elements (CCEs) occupied by the second control resource set is greater than or equal to a number of CCEs occupied by the first control resource set.

14. The method according to claim 12 or 13, characterized in that, The second aggregation level is N times of the first aggregation level, and the N is an integer greater than 1.

15. The method of claim 14, wherein, The number of RBs occupied by the second control resource set is R times of the number of RBs occupied by the first control resource set; the R is greater than 1, and the R is the same as or different from the N; or, the number of RBs occupied by the second control resource set is equal to the number of RBs occupied by the first control resource set.

16. The method according to claim 14 or 15, characterized in that The transmission parameter of the first PDCCH further comprises one or more first search spaces, the first control resource set corresponds to the one or more first search spaces, and the first search space indicates a number of candidate first PDCCHs under each first aggregation level; the transmission parameter of the second PDCCH further comprises one or more second search spaces, the second control resource set corresponds to the one or more second search spaces, and the second search space indicates a number of candidate second PDCCHs under each second aggregation level; When the number of CCEs occupied by the first control resource set is less than a first value, the number of CCEs occupied by the second control resource set is R times the number of CCEs occupied by the first control resource set, R is greater than 1, and R is the same as or different from N; The first value is N times of a maximum value in a total number of CCEs occupied by all candidate first PDCCHs under each first aggregation level in the first search space.

17. The method of claim 16, wherein, When the number of CCEs occupied by the first control resource set is greater than or equal to the first value, the number of CCEs occupied by the second control resource set is equal to the number of CCEs occupied by the first control resource set.

18. The method of claim 16 or 17, wherein, The first value satisfies: Among them, the represents a maximum value in a total number of CCEs occupied by all candidates of a first PDCCH under each first aggregation level in the first search space; the L represents a first aggregation level corresponding to the maximum value, and the The number of candidate first PDCCHs under the first aggregation level corresponding to the maximum value is indicated.

19. A communications device, characterized by The unit for executing the method of any one of claims 1-9, or the unit for executing the method of any one of claims 10-18.

20. A communications device, characterized by The processor and the memory are coupled, the processor is configured to implement the method of any one of claims 1-9, or the processor is configured to implement the method of any one of claims 10-18.

21. A chip, characterized by The processor and the interface are coupled; the interface is configured to receive or output signals, and the processor is configured to execute code instructions so that the method of any one of claims 1-9 is executed, or so that the method of any one of claims 10-18 is executed.

22. A computer program product, characterised in that, The computer program product comprises computer program code, which, when run by a computer, causes the computer to execute the method of any one of claims 1-9, or causes the computer to execute the method of any one of claims 10-18.

23. A computer-readable storage medium, characterized in that, The computer readable storage medium stores computer executable instructions, which, when invoked by the computer, cause the computer to execute the method of any one of claims 1-9, or cause the computer to execute the method of any one of claims 10-18.

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