Communication methods and related apparatuses

Abstract

The application provides a communication method and related device, and applies to the technical field of communication. In the embodiment of the application, the first communication device is taken as a terminal device, and the second communication device is taken as a network device. Compared with the prior art in which the DCI and PDSCH used for paging by the network device are scrambled by P-RNTI so that all terminal devices can receive the paging message, in the present scheme, the network device uses first information to page a single terminal device once, and the first information is scrambled by the related identifier of the first communication device, so that the paging capacity is ensured in the case of reduced system bandwidth.

Description

Technical Field

[0001] This application relates to the field of communication technology, and in particular to communication methods and related devices. Background Technology

[0002] In existing protocols, a single paging message can include identifiers (UEIDs) for up to 32 terminal devices. Taking core network paging as an example, a UEID is 48 bits long. Therefore, based on the maximum paging capacity of the core network, at least 20MHz of bandwidth is required for a 30kHz subcarrier spacing.

[0003] In future mobile communication systems, power consumption of base stations and terminals can typically be further reduced by lowering bandwidth. Therefore, in future low-bandwidth systems, the bandwidth may be 5MHz, 3MHz, or other values ​​less than 20MHz, making it impossible to support 32 UEIDs on this bandwidth, thus limiting paging capacity.

[0004] Therefore, how to ensure paging capacity when system bandwidth is reduced is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0005] This application provides a communication method and related apparatus that can guarantee paging capacity even when system bandwidth is reduced.

[0006] In a first aspect, embodiments of this application provide a communication method. This method can be applied to a first communication device, which may be, for example, a terminal device, or a module within the terminal device (wherein the module includes a communication module and a computing module), or a circuit or chip within the terminal device responsible for communication functions (such as a modem chip, also known as a baseband chip, or a system-on-chip (SoC) chip containing a modem core, or a system-in-package (SIP) chip). Alternatively, the first communication device may also be a logic module or software capable of implementing all or part of the functions of the terminal device. The method includes: receiving first information from a second communication device, wherein the cyclic redundancy check of the first information is scrambled by the identification information of the first communication device, and the first information includes paging physical downlink control channel (PDCCH) control information, which indicates the time-frequency location for receiving a paging message. The first information is descrambled using its own identification information. The paging message is received according to the first information.

[0007] In this application, taking the first communication device as the terminal device and the second communication device as the network device as an example, compared with the prior art where the downlink control information (DCI) and PDSCH used by the network device for paging are scrambled by the paging radio network temporary identity (P-RNTI) so that all terminal devices can receive the paging message, in this solution, the network device uses the first information to paging a single terminal device at a time, and the first information is scrambled by the relevant identifier of the first communication device, thereby ensuring paging capacity when the system bandwidth is reduced.

[0008] In one possible implementation, the identification information of the first communication device includes any one of the following: the subscription permanent identifier (SUPI) of the first communication device, and the fifth generation mobile communication technology-system architecture evolution-temporary mobile subscription identifier (5G-S-TMSI) of the first communication device.

[0009] Alternatively, the identification information of the first communication device is used to uniquely identify the identity of the first communication device in the current network.

[0010] In the above embodiments, taking the first communication device as the terminal device and the second communication device as the network device as an example, several possible contents of the identification information of the first communication device are provided. For example, the terminal device can be identified by SUPI or 5G-S-TMSI. The unique identifier of the terminal device enables the network device to accurately distinguish different terminal devices, and ensures paging capacity when the system bandwidth is reduced, so as to ensure that the corresponding user can be correctly paged.

[0011] In another possible implementation, the number of bits of the identification information of the first communication device is less than or equal to the number of bits of the preset scrambled identification information.

[0012] In the above embodiments, setting the number of bits of the identification information of the first communication device to be less than or equal to the number of bits of the preset scrambled identification information can correspond to the scheme in which the network device uses the first information to page a single terminal device at once, and the first information is scrambled through the relevant identification of the first communication device, thereby ensuring paging capacity when the system bandwidth is reduced.

[0013] Secondly, embodiments of this application provide a communication method that can be applied to a second communication device. The second communication device can be, for example, a network device, or a module within the network device (wherein the module includes a communication module and a computing module), or a circuit or chip within the network device responsible for communication functions (such as a modem chip, also known as a baseband chip, or a system-on-chip (SoC) chip containing a modem core, or a system-in-package (SIP) chip). Alternatively, the second communication device can also be a logic module or software capable of implementing all or part of the functions of a network device. The method includes: sending first information to a first communication device, wherein the cyclic redundancy check of the first information is scrambled by the identification information of the first communication device, and the first information includes paging physical downlink control channel (PDCCH) control information, the paging PDCCH control information being used to indicate the time-frequency location for receiving a paging message; and sending the paging message to the first communication device.

[0014] In this application, taking the first communication device as the terminal device and the second communication device as the network device as an example, compared with the prior art where the DCI and PDSCH used by the network device for paging are scrambled by P-RNTI so that all terminal devices can receive the paging message, in this solution the network device uses the first information to paging a single terminal device at a time, and the first information is scrambled by the relevant identifier of the first communication device, thereby ensuring paging capacity when the system bandwidth is reduced.

[0015] In one possible implementation, the identification information of the first communication device includes any one of the following: the subscription permanent identifier (SUPI) of the first communication device, and the fifth generation mobile communication technology-system architecture evolution-temporary mobile subscription identifier (5G-S-TMSI) of the first communication device.

[0016] In another possible implementation, the number of bits of the identification information of the first communication device is less than or equal to the number of bits of the preset scrambled identification information.

[0017] Thirdly, embodiments of this application provide a communication device that can be used in the first communication device of the first aspect. The first communication device can be a terminal device, a device in the terminal device (e.g., a chip, a chip system, or a circuit), or a device that can be matched with the terminal device. It can also be a logic module or software that can realize all or part of the functions of the terminal device.

[0018] In one possible implementation, the communication device may include modules or units that perform the methods / operations / steps / actions described in the first aspect. These modules or units may be hardware circuits, software, or a combination of hardware circuits and software.

[0019] Fourthly, embodiments of this application provide a communication device that can be used in the communication device of the second aspect. The communication device can be a network device, a device in a network device (e.g., a chip, a chip system, or a circuit), or a device that can be used in conjunction with a network device, or a logic module or software that can implement all or part of the functions of a network device.

[0020] In one possible implementation, the communication device may include modules or units that perform the methods / operations / steps / actions described in the second aspect one by one. These modules or units may be hardware circuits, software, or a combination of hardware circuits and software.

[0021] Fifthly, embodiments of this application provide a communication device, which includes at least one processor and a communication interface; the communication interface is used for inputting and / or outputting information, and the at least one processor is used to call a computer program stored in at least one memory to implement the method described in any one of the embodiments of the first to second aspects.

[0022] In one possible implementation of the fifth aspect, the communication device further includes at least one of the aforementioned memories. Optionally, the memory and processor are integrated together.

[0023] In a sixth aspect, embodiments of this application provide a communication device, which includes a logic circuit and an interface, the logic circuit and the interface being coupled; the interface is used to input and / or output information, and the logic circuit is used to implement the method described in any of the embodiments of the first to second aspects.

[0024] In one possible implementation of the sixth aspect, the communication device is a chip or chip system.

[0025] In a seventh aspect, embodiments of this application provide a communication system, which includes a first communication device and a second communication device, and the first communication device and the second communication device are communicatively connected. The first communication device is used to implement the method of any embodiment of the first aspect, and the second communication device is used to implement the method of any embodiment of the second aspect.

[0026] Eighthly, embodiments of this application provide a computer-readable storage medium for storing instructions or computer programs; when the instructions or computer programs are executed, they implement the method of any one of the embodiments of the first to second aspects.

[0027] Ninthly, this application provides a computer program product including computer instructions that, when executed on at least one processor, can implement the methods described in any of the first to second aspects or any possible implementations thereof. Exemplarily, the computer program product can be a software installation package, which can be downloaded and executed on a computing device when the aforementioned methods are required.

[0028] The beneficial effects of the technical solutions provided in the second to ninth aspects of this application can be referred to the beneficial effects of the technical solutions in the first aspect, and will not be repeated here. Attached Figure Description

[0029] The accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0030] Figure 1 This is a schematic diagram of the architecture of a communication system provided in an embodiment of this application;

[0031] Figure 2 This is a schematic diagram of the architecture of another communication system provided in an embodiment of this application;

[0032] Figure 3 This is a schematic diagram of the architecture of an access network device provided in an embodiment of this application;

[0033] Figure 4 This is a schematic diagram of a commonly used architecture for an access network device chip provided in an embodiment of this application;

[0034] Figure 5 This is a schematic diagram of an O-RAN system provided in an embodiment of this application;

[0035] Figure 6 This is a schematic diagram of another O-RAN system provided in an embodiment of this application;

[0036] Figure 7 This is a diagram illustrating the network element functional division and protocol layer structure of an open radio access network (O-RAN) system provided in an embodiment of this application.

[0037] Figure 8 This is a schematic diagram illustrating the power consumption evolution of a typical site according to an embodiment of this application;

[0038] Figure 9A This is a schematic diagram illustrating the correspondence between system bandwidth and paging capacity provided in an embodiment of this application;

[0039] Figure 9BThis is a schematic diagram illustrating another correspondence between system bandwidth and paging capacity provided in an embodiment of this application;

[0040] Figure 10 This is a flowchart illustrating a communication method provided in an embodiment of this application;

[0041] Figure 11 This is a schematic diagram of a scrambling method provided in an embodiment of this application;

[0042] Figure 12 This is a schematic diagram of the structure of a communication device 120 provided in an embodiment of this application;

[0043] Figure 13 This is a schematic diagram of the structure of another communication device 130 provided in the embodiments of this application. Detailed Implementation

[0044] The embodiments of this application will now be described in detail with reference to the accompanying drawings.

[0045] The system architecture used in the embodiments of this application is described below. It should be noted that the system architecture and business scenarios described in this application are for the purpose of more clearly illustrating the technical solutions of this application, and do not constitute a limitation on the technical solutions provided in this application. As those skilled in the art will know, with the evolution of system architecture and the emergence of new business scenarios, the technical solutions provided in this application are also applicable to similar technical problems.

[0046] Please see Figure 1 , Figure 1 This is a schematic diagram of the architecture of a communication system provided in an embodiment of this application, such as... Figure 1 As shown in (a), the communication system includes a first communication device 101 and a second communication device 102. Optionally, the communication system further includes a third communication device 103.

[0047] Optionally, the first communication device 101, the second communication device 102, and the third communication device 103 can be of the same type or different types of devices. For example, such as Figure 1 As shown in (b) above, the first communication device 101 is a terminal device, the second communication device 102 is a network device, and the third communication device 103 is a core network device. For example, as... Figure 1 As shown in (c), the first communication device 101 is a terminal device, the second communication device 102 is a terminal device, and the third communication device 103 is a network device. The architecture of the communication system will be described in detail below, taking the first communication device 101 as a terminal device, the second communication device 102 as a network device, and the third communication device 103 as a core network device.

[0048] It is understood that, in the case where the communication system only includes the first communication device 101 and the second communication device 102, the communication system only shows one terminal device and one network device. In actual use, an architecture of at least one terminal device and / or at least one network device can be adopted as needed (e.g., Figure 1 (The architecture shown in (c)). For example, a single terminal device (e.g., denoted as terminal device 1) can receive paging message A from a single network device (e.g., denoted as network device 2), and a single terminal device (e.g., denoted as terminal device 2) can receive paging message B from network device 1. Accordingly, network device 1 can send paging message A to terminal device 1, and network device 2 can also send paging message B to terminal device 2.

[0049] It is understood that, in the case where the communication system includes a first communication device 101, a second communication device 102, and a third communication device 103, for example... Figure 1 The architecture shown in (b) illustrates a communication system with one network device and one terminal device. In practical use, an architecture with at least one terminal device and / or at least one network device may be adopted as needed. For example, in... Figure 2 The communication system shown includes one network device and multiple terminal devices, or multiple network devices and one terminal device. A single terminal device can receive paging messages from a single network device, and a single network device can send paging messages to a single terminal device.

[0050] In this system, terminal devices connect to network devices wirelessly, while network devices connect to core network devices wirelessly or via wired connections. Core network devices and network devices can be independent physical devices, or they can integrate the functions of core network devices and the logical functions of network devices onto a single physical device. Alternatively, a single physical device can integrate some core network device functions and some network device functions. Terminal devices can be fixed in location or mobile.

[0051] Optionally, network devices and terminal devices can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; they can also be deployed on water; and they can also be deployed in the air on aircraft, balloons, and satellites. The embodiments of this application do not limit the application scenarios of the network devices and terminal devices.

[0052] In this application embodiment, the terminal device involved may include various handheld devices, vehicle-mounted devices, wearable devices, computing devices, or other processing devices connected to a wireless modem with wireless communication capabilities. Figure 2The terminal device 220 shown can also be called user equipment (UE), mobile station (MS), mobile terminal (MT), etc., or a device used to provide voice or data connectivity to users, or an Internet of Things (IoT) device. For example, terminal devices include handheld devices with wireless connectivity, vehicle-mounted devices, etc. Currently, terminal devices can include: mobile phones, tablets, laptops, PDAs, mobile internet devices (MIDs), wearable devices (such as smartwatches, smart bracelets, pedometers, smart glasses, etc.), in-vehicle devices (such as cars, bicycles, electric vehicles, airplanes, ships, trains, high-speed trains, etc.), satellite terminals, virtual reality (VR) devices, augmented reality (AR) devices, smart point-of-sale (POS) machines, customer-premises equipment (CPE), light user equipment (UE), reduced capability user equipment (REDCAP UE), wireless terminals in industrial control, smart home devices (such as refrigerators, televisions, air conditioners, electricity meters, etc.), smart robots, robotic arms, workshop equipment, wireless terminals in autonomous driving, wireless terminals in telemedicine, wireless terminals in smart grids, wireless terminals in transportation safety, wireless terminals in smart cities, or wireless terminals in smart homes, and flying equipment (such as smart robots, hot air balloons, drones, airplanes), etc. Terminal devices can also be vehicle devices, such as vehicle devices, vehicle modules, vehicle chips, on-board units (OBUs) or telematics boxes (T-BOXs). Terminal devices can also be other devices with terminal functions. For example, a terminal device can also be a device that performs terminal functions in D2D communication.

[0053] It should be noted that the embodiments of this application can be applied to downlink signal transmission, uplink signal transmission, and device-to-device (D2D) signal transmission. For downlink signal transmission, the transmitting device is a network device, and the corresponding receiving device is a terminal device. For uplink signal transmission, the transmitting device is a terminal device, and the corresponding receiving device is a network device. For D2D signal transmission, the transmitting device is a terminal device, and the corresponding receiving device is also a terminal device. The embodiments of this application do not limit the direction of signal transmission.

[0054] Communication between network devices and terminal devices, as well as between terminal devices, can be achieved through licensed spectrum, unlicensed spectrum, or a combination of both. Communication between network devices and terminal devices, as well as between terminal devices, can also be achieved through spectrum below 6th generation (6G), spectrum above 6G, or a combination of both. The embodiments of this application do not limit the spectrum resources used between network devices and terminal devices.

[0055] In this embodiment, the functions of the network device can be executed by modules (such as chips) within the network device, or by a control subsystem that includes network device functions. This control subsystem, including network device functions, can be a control center in the aforementioned application scenarios such as smart grids, industrial control, intelligent transportation, and smart cities. Similarly, the functions of the terminal device can be executed by modules (such as chips or modems) within the terminal device, or by a device that includes terminal device functions.

[0056] Typically, network device 210 can be a node in a radio access network (RAN), such as a wireless relay device and / or a wireless backhaul device. Figure 2 (Not shown in the image). Network device 210, sometimes referred to as access network device or RAN node (or device), forms part of a communication system and assists terminal devices in achieving wireless access. Network device 210 can also be a 3rd generation partnership project (3GPP) related cellular system, such as a 4th generation (4G) mobile communication system, a 5th generation (5G) mobile communication system, an NTN (non-terrestrial network) system, or a future-oriented evolution system (e.g., a 6G mobile communication system). Network device 210 can also be an open RAN (O-RAN or ORAN), a cloud radio access network (CRAN), or a wireless fidelity (WIFI) system, or a communication system that integrates two or more of the above systems.

[0057] In the communication system 2000, multiple network devices 210 can be nodes of the same type or nodes of different types. In some scenarios, the roles of network devices 210 and terminal devices 220 are relative, for example, Figure 2 Network element 220i can be a helicopter or a drone, and it can be configured as a mobile base station. For terminal devices 220j that access RAN 200 through network element 220i, network element 220i is a base station; however, for base station 210a, network element 220i is a terminal device. Network device 210 and terminal device 220 are sometimes referred to as communication devices, for example... Figure 2 Network elements 210a and 210b can be understood as communication devices with base station functions, while network elements 220a-220j can be understood as communication devices with terminal equipment functions. Terminal equipment 220 connects to network equipment 210 wirelessly. Network equipment 210 connects to the core network wirelessly or via a wired connection. The core network equipment and network equipment 210 in the core network can be different physical devices, or they can be the same physical device integrating core network logical functions and wireless access network logical functions.

[0058] In this application, the core network equipment refers to equipment in the core network (CN) that provides service support for terminal equipment. Examples of core network equipment include: access and mobility management function (AMF) entities, session management function (SMF) entities, user plane function (UPF) entities, etc., which are not listed here. The AMF entity is responsible for access management and mobility management of the terminal equipment; the SMF entity is responsible for session management, such as user session establishment; and the UPF entity can be a user plane functional entity, primarily responsible for connecting to external networks. It should be noted that in this application, entities can also be referred to as network elements or functional entities. For example, an AMF entity can also be called an AMF network element or an AMF functional entity, and an SMF entity can also be called an SMF network element or an SMF functional entity, etc.

[0059] In one possible scenario, network equipment can be a base station, an evolved NodeB (eNodeB), a transmitting and receiving point (TRP), a transmitting point (TP), a next-generation NodeB (gNB), a base station in a future mobile communication system, a satellite, or an access point (AP) in a Wi-Fi system, an integrated access and backhaul (IAB) node, or network equipment in a mobile switching center non-terrestrial network (NTN) communication system, meaning it can be deployed on high-altitude platforms or satellites. Network equipment can also be a macro base station (such as...). Figure 2 210a), micro base stations or indoor stations (such as Figure 2 The network device can be a relay node or donor node (as defined in section 210b), or a wireless controller in a cloud radio access network (CRAN) scenario. It can also be a device that functions as a base station in device-to-device (D2D) communication, vehicle-to-everything (V2X) communication, drone communication, or machine-to-machine (M2M) communication. Optionally, the network device can also be a server, wearable device, vehicle, or in-vehicle equipment. For example, in vehicle-to-everything (V2X) technology, the access network device can be a roadside unit (RSU).

[0060] In another possible scenario, multiple network devices collaborate to assist terminal devices in achieving wireless access, with each network device performing a portion of the base station's functions. For example, these network devices can be central units (CUs), distributed units (DUs), CU-control plane (CPs), CU-user plane (UPs), or radio units (RUs). CUs and DUs can be configured separately or included in the same network element, such as the baseband unit (BBU). The CU and DU nodes separate the gNB's protocol layers; some protocol layer functions are centrally controlled by the CU, while the remaining partial or complete protocol layer functions are distributed in the DU, which is centrally controlled by the CU. As one implementation, the CU deploys the Radio Resource Control (RRC) layer, PDCP layer, and Service Data Adaptation Protocol (SDAP) layer in the protocol stack; the DU deploys the Radio Link Control (RLC) layer, Media Access Control (MAC) layer, and Physical Layer (PHY) in the protocol stack. Thus, the CU has RRC, PDCP, and SDAP processing capabilities. The DU has RLC, MAC, and PHY processing capabilities. It is understood that the above functional division is merely an example and does not constitute a limitation on the CU and DU. The RU can be included in radio equipment or radio units, such as in a remote radio unit (RRU), active antenna unit (AAU), or remote radio head (RRH). It is understood that the network device can be a CU node, a DU node, or a device including both CU and DU nodes. Furthermore, the CU can be classified as a network device in the access network RAN ​​or as a network device in the core network CN; no restrictions are imposed here.

[0061] In one possible design, there is an interface between the DU and the RU. Depending on the functions of the DU and RU, and / or the different splitting methods, the interface between the DU and RU can be a common public radio interface (CPRI) or an enhanced common public radio interface (eCPRI).

[0062] Further, optionally, the method provided in this application embodiment can be applied to a RAN system; please refer to [link to relevant documentation]. Figure 3 , Figure 3 This is a schematic diagram of the architecture of an access network device provided in an embodiment of this application, such as... Figure 3 As shown, access network equipment includes one or more functional modules for signal processing. Taking physical layer functions as an example, access network equipment includes one or more of the following functions: coding, rate matching, scrambling, modulation, layer mapping, precoding, resource element (RE) mapping, digital beamforming (BF), inverse fast Fourier transform (IFFT) / adding cyclic prefix (CP), decoding, rate matching de-matching, descrambling, demodulation, inverse discrete Fourier transform (IDFT), channel equalization (or channel estimation), RE de-mapping, digital BF, fast Fourier transform (FFT) / CP removal, digital to analog (DA) conversion, analog BF, analog to digital (AD) conversion, or analog BF.

[0063] One or more of the above functional modules can be implemented through software, hardware, or a combination of both. Physically, they can be discrete or integrated. It is understood that the functional modules described above are merely examples; access network equipment may include other modules (e.g., scheduling modules, power control modules, hybrid automatic repeat request (HARQ) modules, flow control modules, mobility management modules, or artificial intelligence (AI) modules, etc.) depending on the design, or may not include them. Figure 3 The diagram shows a functional module (excluding the digital BF module). The access network equipment also includes a fronthaul (FH) interface between the DU and RU for communication between them. This fronthaul interface includes, but is not limited to, CPRI or eCPRI.

[0064] In one possible implementation, the DU is located in the BBU, and the RU is located in the RRU, AAU, or RRH. The interface between the BBU and the RRU / AAU / RRH can also be called the fronthaul interface. To implement the fronthaul interface, the BBU and RRU / AAU / RRH can be connected through a fronthaul network, or the DU and RU can be connected through a fronthaul network. For example, the fronthaul network includes, but is not limited to, direct fiber optic connections and wavelength division multiplexing (WDM) networks.

[0065] Access network equipment can support one or more types of fronthaul interfaces. Different fronthaul interfaces correspond to DUs and RUs with different functions. For example... Figure 3 As shown, if the fronthaul interface between the DU and RU is CPRI, the DU is configured to implement one or more baseband functions, and the RU is configured to implement one or more radio frequency functions. If the fronthaul interface between the DU and RU is eCPRI, then, relative to CPRI, some downlink and / or uplink baseband functions are moved from the DU to the RU for implementation. Different splitting methods between the DU and RU correspond to different types (Category, Cat) of eCPRI. For example, Figure 3 Six examples of eCPRI are shown, denoted as Cat A, B, C, D, E, and F (they can also be represented as option A to F, option 1 to 6, or other methods). It is understood that there may be other ways to split between DU and RU, meaning there may be other types of eCPRI.

[0066] Taking eCPRI Cat A as an example, for downlink transmission, layer mapping is used as the dividing line. DU is configured to implement one or more functions preceding layer mapping (i.e., coding, rate matching, scrambling, modulation, and layer mapping), while other functions following layer mapping (e.g., RE mapping, digital BF, or IFFT / CP addition) are implemented in RU. For uplink transmission, de-RE mapping is used as the dividing line. DU is configured to implement one or more functions preceding de-mapping (i.e., decoding, rate matching de-matching, descrambling, demodulation, IDFT, channel equalization, and de-RE mapping), while other functions following de-mapping (e.g., digital BF or FFT / CP removal) are implemented in RU.

[0067] Similarly, for eCPRI Cat B, Cat C, Cat D, Cat E, and Cat F, they correspond to different DU and RU segmentation methods. The functions at and before the segmentation point are implemented by the DU, while the functions after the segmentation point are implemented by the RU. The segmentation points for each type of eCPRI are referenced. Figure 3As shown, details will not be elaborated further. For example, for eCPRI Cat B, RE mapping is used for downlink transmission segmentation, and deRE mapping is used for uplink transmission segmentation. For uplink transmission, RE mapping and functions before RE mapping are implemented by DU, while functions after RE mapping and RF functions are implemented by RU. For downlink transmission, deRE mapping and functions before deRE mapping are implemented by DU, while functions after deRE mapping and RF functions are implemented by RU.

[0068] eCPRI's segmentation method can be symmetrical for uplink and downlink, such as... Figure 3 The eCPRI Cat B and CatC shown; or, the eCPRI segmentation method can be asymmetrical for uplink and downlink, such as... Figure 3 The eCPRI Cat A, Cat D, Cat E, and Cat F shown are not limited. Optionally, different splitting methods can be configured for different channels or different channel groups for uplink and / or downlink, i.e., different types of eCPRI can be configured. A channel group may include one or more channels.

[0069] In one possible design, the DU is located in the BBU, and the RU is located in the RRU, AAU, or RRH. The processing unit in the BBU used to implement baseband functions is called the baseband high (BBH) unit, and the processing unit in the RRU, AAU, or RRH used to implement baseband functions is called the baseband low (BBL) unit.

[0070] Please see Figure 4 , Figure 4 This is a schematic diagram of a commonly used architecture for an access network device chip provided in an embodiment of this application, such as... Figure 4 As shown, the access network device chip can be divided into three parts: CU, DU, and RU. The CU is the platform that performs upper-layer L2 and L3 functions. The midhaul and backhaul interfaces are used to carry traffic between the CU and DU, as well as between the CU and the core network. The DU performs L1 and some L2 functions, and the RU performs L1 computing and RF digital functions; the fronthaul and backhaul interfaces are used to carry traffic between the RU and DU, as well as between the CU and DU. An integrated DU includes the functions of the DU and RU mentioned above.

[0071] The CU / DU hardware includes a chassis platform, motherboard, peripherals, and cooling system. The motherboard contains processing units, memory, internal I / O interfaces, and external connection ports. Its hardware accelerators are designed with interfaces, and hardware functional components include: storage for software, hardware, and system debugging interfaces, and a single-board management controller.

[0072] DU systems are typically implemented using multi-core processors and one or more hardware accelerators. Parts of the DU protocol stack can be implemented in software running on the multi-core processor, while computationally intensive L1 and L2 functions can be offloaded to FPGA / GPU-based hardware accelerators; alternatively, all L1 functions can be offloaded to FPGA / GPU-based hardware accelerators, while other protocol stack components are implemented in software running on the processor; or the entire protocol stack can be implemented in software running on the processor. Hardware accelerators support interconnection with x86 or non-x86 processors. Similarly, accelerators have multi-channel PCIe interfaces pointing to the CPU and external connections via GbE.

[0073] The RU comprises three parts: the O-RAN processing unit (OPU), which receives eCPRI frames from the O-RAN fronthaul and performs fronthaul interface, lowest-level L1 (coding, scrambling, modulation, layer mapping, precoding), synchronization, beamforming, and resource unit mapping. The OPU can be implemented as a CPU, FPGA, or ASIC. The O-RU's digital processing unit (DPU) performs synchronization, DDC (digital downconversion in UL), DUC (digital upconversion in DL), CFR, and DPD, improving power amplifier efficiency by reducing PAPR / ACLR at the RF front-end; the DPU can be implemented as an FPGA or ASIC. The O-RU's RF processing unit includes a transceiver module, up / down converters, power amplifiers (PA), low-noise amplifiers (LNA), and Tx / Rx filters. All conversions between the analog and digital domains (DAC and ADC) (e.g., RF sampling, frequency conversion using RF, IF, and LO mixing during up-conversion and down-conversion) are performed within the transceiver module. It should be noted that physical and logical partitions within the RF processing unit do not require specific boundaries.

[0074] Optionally, the method provided in this application embodiment can also be applied to O-RAN systems; please refer to [link to relevant documentation]. Figure 5 , Figure 5 This is a schematic diagram of an O-RAN system provided in an embodiment of this application. The O-RAN system may also include... Figure 5 Other components besides those shown are not limited in this application. Optionally, as... Figure 5 The network devices shown can be access network devices, such as eNBs, gNBs, or next-generation access network devices. Access network devices communicate with the core network (CN) via a backhaul link and with terminal devices via an air interface.

[0075] The BBU in the access network equipment communicates with the core network via a backhaul link, and the RU in the access network equipment communicates with at least one terminal device via an air interface. The BBU communicates with at least one RU via a fronthaul link. The BBU and RU may or may not be co-located. The BBU includes at least one control unit (CU) and at least one distributed unit (DU), which can communicate via at least one midhaul link.

[0076] Alternatively, existing access network equipment architectures are monolithic, which lacks flexibility in signal processing. See also... Figure 6 , Figure 6 This is a schematic diagram of another O-RAN system provided in the embodiments of this application, combined with Figure 6 The following is a fronthaul interface suitable for O-RAN systems, which flexibly splits the RAN architecture to achieve flexible signal processing. The specific steps are as follows:

[0077] Step 1: When the system starts up or is reconfigured, the BBL reports the signaling of the physical uplink shared channel (PUSCH) / PDSCH / PDCCH / physical uplink control channel (PUCCH) channel processing capabilities and conversion rules to the BBH through the eCPRI interface.

[0078] Among them, the eCPRI interface signaling involved is a new signaling. This signaling definition includes the PUSCH / PDSCH / PDCCH / PUCCH channel processing capabilities and conversion rules. The advantage of the signaling that defines the channel conversion rules is that it facilitates the interconnection of DU and RU between different manufacturers. Products from the same manufacturer are also conducive to the decoupling of the design between DU and RU.

[0079] Step 2: Based on the scheduling results of the PUSCH / PDSCH / PDCCH / PUCCH channels in the current processing cycle, BBH calculates the BBL processing capacity margin and allocates appropriate PDSCH channel processing for the next cycle according to the processing capacity margin.

[0080] Optionally, the processing time involved in this step can be in milliseconds or seconds, and this application does not limit it.

[0081] Step 3: BBH sends the assigned PDSCH channel processing task to BBL through the eCPRI interface.

[0082] Accordingly, BBL receives the assigned PDSCH channel processing task.

[0083] Optionally, PDSCH channel processing defaults to a splitting scheme deployed on BBH to take advantage of pooled processing resources and flexible evolution.

[0084] Step 4: BBL sends the PDSCH processing result to BBH.

[0085] Accordingly, BBH receives the PDSCH processing result.

[0086] Alternatively, BBL can be replaced with RU, and BBH can be replaced with DU.

[0087] Further optional, please see Figure 7 , Figure 7 This application provides a diagram illustrating the network element functional division and protocol layer structure of an open radio access network (O-RAN) system, as shown in the embodiments below. Figure 7 As shown, in some examples, the CU is a logical node carrying the RRC layer, Service Data Adaptation Protocol (SDAP) layer, Packet Data Convergence Protocol (PDCP) layer, and other control functions of the access network equipment. The CU connects to network nodes such as the core network through interfaces, which can be interfaces such as E2 interfaces. Optionally, the CU may have some core network functions, such as the PDCP layer and higher layers. The CU connects to the DU (e.g., RLC layer and lower layers) through interfaces, which can be interfaces such as F1 interfaces. In some examples, these interfaces (e.g., the F1 interface) can provide control plane (C-Plane) and user plane (U-Plane) functions (e.g., interface management, system information management, UE context management, RRC message transmission, etc.). F1AP is the application protocol of the F1 interface, defining the signaling procedures of F1 in some examples. The F1 interface supports control plane F1-C and user plane F1-U.

[0088] In some examples, the CU can be split into CU-CP (control unit-control plane) and CU-UP (control unit-user plane). CU-CP is a logical node carrying the RRC layer and PDCP-C (control plane part of PDCP) layer, used to implement the CU's control plane functions. CU-CP can interact with network elements in the core network used to implement control plane functions. These network elements in the core network can be access and mobility function (AMF) network elements, such as the access and mobility management function (AMF) in a 5G mobile communication system. AMF network elements are responsible for mobility management in the mobile network, such as terminal device location updates, terminal device registration with the network, and terminal device handover. CU-UP is a logical node carrying the SDAP layer and the PDCP-U (user plane part of PDCP) layer for user plane data, used to implement the CU's user plane functions. CU-UP can interact with network elements in the core network used to implement user plane functions. These network elements in the core network, such as the UPF (user plane function) in a 5G system, are responsible for data forwarding and receiving in terminal devices. It should be understood that the above configurations of CU and DU are merely examples, and the functions of CU and DU can be configured as needed. This application does not impose excessive limitations on this. For example, CU or DU can be configured to have more protocol layer functions, or CU or DU can be configured to have some protocol layer processing functions. Another example is to place some functions of the RLC layer and the protocol layer functions above the RLC layer in the CU, and place the remaining functions of the RLC layer and the protocol layer functions below the RLC layer in the DU. Yet another example is that the functions of CU or DU can be divided according to service type or other system requirements, such as by latency, placing functions that need to meet low latency requirements in the DU, and functions that do not need to meet this latency requirement in the CU.

[0089] In some examples, a DU is a logical node that carries the radio link control (RLC) layer, medium access control (MAC) layer, higher physical layer (PHY) layer, and other functions. In some examples, a DU can control at least one RU. The DU connects to the RU through interfaces, which can be fronthaul interfaces.

[0090] In some examples, the CU may not have a PDCP layer, i.e., it only includes the RRC layer. CU-CP does not have PDCP-C. CU-UP may not have PDCP-U, or may not have CU-UP at all. In some examples, the DU may not have an RLC layer, only a MAC and a higher PHY layer. Furthermore, in some examples, it may not have a CU and may only include the DU.

[0091] In some examples, the higher PHY layer includes parts of the PHY layer that handle processes such as forward error correction (FEC) encoding and decoding, scrambling, modulation, and demodulation.

[0092] In some examples, the RU is a logical node that carries both lower physical layer (PHY) and radio frequency chain (RF chain) processing. In some examples, the RU can be a 3GPP TRP, a Remote Radio Header (RRH), or other similar entity. In some examples, the Low-PHY includes PHY processing functions such as Fast Fourier Transform (FFT), Inverse Fast Fourier Transform (IFFT), digital beamforming, and filtering. The RU communicates with one or more terminal devices via a wireless link.

[0093] Optionally, the DU and RU may or may not be co-located. The DU and RU exchange control plane information via a fronthaul link through a lower-layer split-control, user plane information (LLS-CUS) and synchronization interface. The LLS-CUS may include LLS-C and LLS-U interfaces that respectively provide the control plane (C-Plane) and user plane (U-Plane). In some examples, the control plane (C-Plane) refers to real-time control between the DU and RU. The DU and RU exchange management information via an LLS-M interface on the fronthaul link; the management plane (M-Plane) refers to non-real-time management operations between the DU and RU.

[0094] Optionally, the DU and RU can cooperate to implement the functions of the PHY layer. A DU can be connected to one or more RUs. The functions of the DU and RU can be configured in various ways depending on the design. For example, the DU can be configured to implement baseband functions, and the RU can be configured to implement mid-RF functions. Alternatively, the DU can be configured to implement higher-level functions in the PHY layer, and the RU can be configured to implement lower-level functions in the PHY layer, or to implement both lower-level and RF functions. Higher-level functions in the physical layer may include a portion of the physical layer's functions that are closer to the MAC layer, while lower-level functions in the physical layer may include another portion of the physical layer's functions that are closer to the mid-RF side.

[0095] In different systems, CU (or CU-CP and CU-UP), DU, or RU may have different names, but those skilled in the art will understand their meaning. For example, in an ORAN system, CU can also be called O-CU (Open CU), DU can also be called O-DU, CU-CP can also be called O-CU-CP, CU-UP can also be called O-CU-UP, and RU can also be called O-RU. For ease of description, this application uses CU, CU-CP, CU-UP, DU, and RU as examples. The network device deployment methods listed here are only examples; as standard technologies evolve, network devices may have other deployment forms.

[0096] Compared to 4G networks, 5G networks offer a dramatically increased transmission bandwidth, and the higher peak-to-average power ratio (PAPR) further reduces the efficiency of power amplifiers (PAs), leading to a sharp increase in the transmission power consumption of 5G base stations. Simultaneously, the significantly increased number of transmission channels at base stations also causes a sharp increase in the system's static power consumption. Finally, the higher deployment frequency bands and smaller coverage area of ​​5G networks, coupled with increasingly dense base station deployments, further increase the overall power consumption of the entire network. Currently, the power consumption of a single 5G base station is typically 2 to 3 times that of a typical 4G base station. Please see [link / reference]. Figure 8 , Figure 8 This is a schematic diagram illustrating the power consumption evolution of a typical site according to an embodiment of this application, such as... Figure 8 As shown, the typical power consumption of a single radio remote unit (RRU) in the 4G era was 660W, while in the 5G era, the typical power consumption of a single active antenna unit (AAU) has increased to 1400W. Such high energy consumption is detrimental to environmental protection and sustainable social development, and also results in enormous electricity costs. Therefore, research on green and energy-saving communication technologies is particularly important for the continued evolution of 5G.

[0097] After completing cell camping, the terminal device can receive paging messages within that cell. Paging-related resource configuration mainly includes paging PDCCH control and paging PDSCH control. PDCCH control primarily indicates the time-frequency location at which the terminal device should receive paging messages, while PDSCH control transmits the terminal device's identifier. After receiving this control information, the terminal device can receive paging messages at the corresponding time-frequency location. Furthermore, the DCI and PDSCH used for paging are typically scrambled using P-RNTI to ensure that all terminal devices can receive the paging messages.

[0098] like Figure 9A As shown, in existing protocols, a single paging message can include identifiers (UEIDs) for up to 32 terminal devices. Taking core network paging as an example, a UE ID is 48 bits long. Therefore, based on the maximum paging capacity of the core network, at least 20MHz of bandwidth is required for a 30kHz subcarrier spacing.

[0099] like Figure 9B As shown, in future mobile communication systems, power consumption of base stations and terminals can typically be further reduced by lowering bandwidth. Therefore, in future low-bandwidth systems, the bandwidth may be 5MHz, 3MHz, or other values ​​less than 20MHz, making it impossible to support 32 UE IDs on this bandwidth, thus limiting paging capacity.

[0100] In view of this, the present application provides a communication method and related apparatus. Taking a first communication device as a terminal device and a second communication device as a network device as an example, compared with the prior art where the DCI and PDSCH used by the network device for paging are scrambled by P-RNTI so that all terminal devices can receive the paging message, in this solution the network device uses first information to paging a single terminal device at a time, and the first information is scrambled by the relevant identifier of the first communication device, thereby ensuring paging capacity when the system bandwidth is reduced.

[0101] The communication methods shown below (such as) Figure 10 For a detailed description of the first and second communication devices, please refer to [reference needed]. Figure 1 Details will not be elaborated here. For ease of description, specific examples in the embodiments of this application may be described using the first communication device as a terminal device and the second communication device as a network device, but this should not be construed as a limitation on the embodiments of this application.

[0102] The embodiments of this application will now be described in detail with reference to the accompanying drawings.

[0103] Please see Figure 10 , Figure 10This is a flowchart illustrating a communication method provided in an embodiment of this application. Optionally, this method can be applied to a communication system, for example, to... Figure 1 The communication system shown.

[0104] like Figure 10 The method shown may include steps S1001-S1003. It should be understood that, for ease of description, this application describes the steps in the order of S1001-S1003, but does not limit the execution to this order. This application's embodiments do not limit the order of execution, the execution time, or the number of executions of one or more of the above steps. Steps S1001-S1003 are as follows:

[0105] Step S1001: The second communication device sends the first information to the first communication device.

[0106] Accordingly, the first communication device receives the first information.

[0107] The cyclic redundancy check (CRC) of the first information is scrambled by the identification information of the first communication device. The first information includes paging physical downlink control channel (PDCCH) control information, which is used to indicate the time and frequency location of receiving paging messages.

[0108] For example, the first information is an exemplary name used to distinguish a particular piece of information. For example, the first information is paging downlink control information (paging DCI). See also... Figure 11 , Figure 11 This is a schematic diagram of a scrambling method provided in an embodiment of this application, as shown below. Figure 11 As shown, with a system bandwidth of 5MHz, the CRC scrambling of this paging DCI uses the unique identifier of the first communication device, such as the UE ID. In other words, this paging DCI is for a single communication device (e.g., the first communication device), rather than paging a group of communication devices.

[0109] It should be noted that since the paging DCI is for a single communication device, rather than paging a group of communication devices, the second communication device does not need to send paging PDSCH control information to the first communication device, and correspondingly, the first communication device does not need to receive the paging PDSCH control information.

[0110] Optionally, the identification information of the first communication device includes any one of the following: the subscription permanent identifier (SUPI) of the first communication device, the 5GS-Temporary mobile subscription identifier (5G-S-TMSI) of the first communication device, etc.

[0111] Alternatively, the identification information of the first communication device is used to uniquely identify the first communication device in the current network.

[0112] Optionally, the number of bits of the identification information of the first communication device is less than or equal to the number of bits of the preset scrambled identification information.

[0113] For example, the identifier for the preset scrambling can be P-RNTI or other identifiers. It should be noted that the above is merely an example for the convenience of describing the identifier for the preset scrambling and should not be construed as a limitation on the identifier for the preset scrambling in the embodiments of this application.

[0114] For example, the design of the number of bits for the identification information of the first communication device can refer to the Short Radio Network Temporary I-RNTI, which has 24 bits but is also valid for idle UEs. Alternatively, the number of bits for the identification information of the first communication device can be redesigned to use a shorter number of bits (e.g., to match the 16-bit P-RNTI).

[0115] It should be noted that the numerical examples of the number of bits shown above for the convenience of describing the number of bits of the identification information of the first communication device should not be construed as limiting the specific numerical value of the number of bits of the identification information of the first communication device in this application.

[0116] Step S1002: The first communication device descrambles the first information using its own identification information.

[0117] Step S1003: The second communication device sends a paging message to the first communication device.

[0118] Accordingly, the first communication device receives the paging message.

[0119] In this application, taking the first communication device as the terminal device and the second communication device as the network device as an example, compared with the prior art where the DCI and PDSCH used by the network device for paging are scrambled by P-RNTI so that all terminal devices can receive the paging message, in this solution the network device uses the first information to paging a single terminal device at a time, and the first information is scrambled by the relevant identifier of the first communication device, thereby ensuring paging capacity when the system bandwidth is reduced.

[0120] The methods of the embodiments of this application have been described in detail above. The apparatus of the embodiments of this application is provided below.

[0121] It should be understood that the division of units in the apparatus provided in this application embodiment is only a logical functional division. In actual implementation, they can be fully or partially integrated into a single physical entity, or they can be physically separated. Furthermore, the units in the apparatus can be implemented by a processor calling software. For example, the apparatus includes a processor connected to a memory, which stores instructions. The processor calls the instructions stored in the memory to implement any of the above methods or to implement the functions of each unit of the apparatus. The processor is, for example, a general-purpose processor, such as a central processing unit (CPU) or a microprocessor, and the memory is either internal or external to the apparatus.

[0122] Alternatively, the units in the device can be implemented as hardware circuits. The functionality of some or all of the units can be achieved through the design of these hardware circuits, which can be understood as one or more processors. For example, in one implementation, the hardware circuit is an application-specific integrated circuit (ASIC). The functionality of some or all of the above units is achieved through the design of the logical relationships between the components within the circuit. In another implementation, the hardware circuit can be implemented using a programmable logic device (PLD). Taking a field-programmable gate array (FPGA) as an example, it can include a large number of logic gates. The connection relationships between the logic gates are configured through a configuration file, thereby achieving the functionality of some or all of the above units.

[0123] In the embodiments of this application, each unit in the device may be one or more processors (or processing circuits) configured to implement the above methods, such as: CPU, graphics processing unit (GPU), neural network processing unit (NPU), tensor processing unit (TPU), deep learning processing unit (DPU), microprocessor unit (MPU), digital signal processor (DSP), ASIC, FPGA, or a combination of at least two of these processor forms.

[0124] Furthermore, the units in the above devices can be integrated in whole or in part, or they can be implemented independently. In one implementation, these units are integrated together as a system-on-a-chip (SOC). The SOC may include at least one processor for implementing any of the above methods or for implementing the functions of the units in the device. The at least one processor can be of different types, such as including a CPU and an FPGA, or including a CPU and an AI processor, or including a CPU and a GPU, etc. Several possible devices are listed below.

[0125] Please see Figure 12 , Figure 12 This is a schematic diagram of the structure of a communication device 120 provided in an embodiment of this application. Optionally, the communication device 120 can be a first communication device or a second communication device, such as a terminal device or a network device, or it can be a component in the first or second communication device, such as a chip or integrated circuit in the terminal device or network device. The communication device 120 is used to implement the aforementioned communication method, for example... Figure 10 The communication method shown.

[0126] In one possible design, the communication device 120 includes a communication unit 1201 and a processing unit 1202. The communication device 120 is used to implement the aforementioned communication method, for example... Figure 10 The communication method shown is exemplified by the communication device, for example, used to perform the method performed by a first communication device, or used to perform the method performed by a second communication device.

[0127] The embodiments of this application and the method embodiments shown above are based on the same concept and have the same technical effects. For the specific principles, please refer to the description of the embodiments shown above, which will not be repeated here.

[0128] Please see Figure 13 , Figure 13 This is a schematic diagram of another communication device 130 provided in an embodiment of this application. The communication device 130 can be a standalone device, such as a first communication device or a second communication device, or it can be a component included in a first or second communication device, such as a chip, software module, or integrated circuit. The communication device 130 may include at least one processor 1301 and a communication interface 1302. Optionally, it may also include at least one memory 1303. Further optionally, it may also include a connection line 1304, wherein the processor 1301, the communication interface 1302, and / or the memory 1303 are connected via the connection line 1304, and / or communicate with each other via the connection line 1304 to transmit control signals and / or data signals.

[0129] Wherein: processor 1301 is a module that performs arithmetic and / or logical operations, and may specifically include one or more of the following modules: filter, modem, power amplifier, low noise amplifier (LNA), baseband processor, radio frequency processor, radio frequency circuit, CPU, AP, microcontroller unit (MCU), electronic control unit (ECU), GPU, MPU, ASIC, image signal processor (ISP), DSP, FPGA, complex programmable logic device (CPLD), or coprocessor, etc.

[0130] The communication interface 1302 can be used to provide information input or output to at least one processor, or to receive signals sent externally and / or send signals to externally.

[0131] For example, the communication interface 1302 may include interface circuitry, such as input / output interfaces, chip pins, etc.

[0132] For example, the communication interface 1302 may include a wired link interface such as an Ethernet cable, or a wireless link interface (Wi-Fi, Bluetooth, general wireless transmission, vehicle short-range communication technology and other short-range wireless communication technologies, etc.).

[0133] Optionally, the communication interface 1302 may also include a radio frequency transmitter, an antenna, etc. When the communication interface 1302 includes an antenna, the number of antennas can be one or more.

[0134] As one possible design, if the communication device 130 is a first network element, a communication device, or a second network element, the communication interface 1302 may include a receiver and a transmitter. The receiver and transmitter may be the same component or different components. When the receiver and transmitter are the same component, this component may be referred to as a transceiver.

[0135] As another possible design, if the communication device 130 is a chip or circuit, the communication interface 1302 may include an input interface and an output interface. The input interface and the output interface may be the same interface or they may be different interfaces.

[0136] Alternatively, the functions of the communication interface 1302 can be implemented by a transceiver circuit or a dedicated transceiver chip.

[0137] The memory 1303 provides storage space, in which data such as the operating system and computer programs can be stored. The memory 1303 can be one or a combination of several of the following: cache, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM), compact disc read-only memory (CD-ROM), synchronous dynamic random access memory (SDRAM), hard disk drive (HDD), solid-state drive (SSD), etc. Memory is any other medium capable of carrying or storing desired program code in the form of instructions or data structures, and accessible by a computer, but is not limited thereto. The memory in this embodiment can also be a circuit or any other device capable of implementing storage functions, used to store computer programs or instructions, and / or data.

[0138] The functions and operations of each module or unit in the communication device 130 listed above are merely illustrative examples.

[0139] Each functional unit in the communication device 130 can be used to implement the aforementioned communication method, for example... Figure 10 The communication method shown is, for example, a method executed by a first communication device, or a method executed by a second communication device.

[0140] Optionally, the processor 1301 may be a processor specifically designed to perform the aforementioned methods (for ease of distinction, referred to as a dedicated processor), or a processor that performs the aforementioned methods by calling a computer program (for ease of distinction, referred to as a dedicated processor). Optionally, at least one processor may include both dedicated processors and general-purpose processors.

[0141] Optionally, if the communication device 130 includes at least one memory 1303, and the processor 1301 implements the aforementioned communication method by calling a computer program, the computer program can be stored in the memory 1303.

[0142] This application also provides a chip, which includes logic circuitry and a communication interface. The communication interface is used to receive or transmit signals; the logic circuitry is used to receive or transmit signals through the communication interface. The chip is used to implement the aforementioned communication method, for example... Figure 10 The communication method shown is, for example, a method executed by a first communication device, or a method executed by a second communication device.

[0143] This application also provides a communication system, which includes a first communication device and a second communication device.

[0144] Optionally, the communication system may also include a third communication device.

[0145] This application also provides a computer-readable storage medium storing instructions that, when executed on at least one processor (or communication device), implement the aforementioned communication method, for example... Figure 10 The communication method shown is, for example, a method executed by a first communication device, or a method executed by a second communication device.

[0146] This application also provides a computer program product, which includes computer instructions for implementing the aforementioned communication method, for example... Figure 10 The communication method shown is, for example, a method executed by a first communication device, or a method executed by a second communication device.

[0147] It should be noted that, in the embodiments of this application, the words "exemplarily" or "for example" are used to indicate examples, illustrations, or explanations. Any embodiment or design scheme described as "exemplarily" or "for example" in this application should not be construed as being more preferred or advantageous than other embodiments or design schemes. Specifically, the use of the words "exemplarily" or "for example" is intended to present the relevant concepts in a specific manner.

[0148] In the embodiments of this application, "at least one" refers to one or more items, and "more than one" refers to two or more items. "At least one of the following" or similar expressions refer to any combination of these items, including any combination of a single item or a plurality of items.

[0149] For example, at least one of a, b, or c can be represented as: 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. "AND / OR" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone, where A and B can be singular or plural. The character " / " generally indicates that the preceding and following related objects have an "OR" relationship.

[0150] Furthermore, unless otherwise stated, the use of ordinal numbers such as "first" and "second" in the embodiments of this application is for distinguishing multiple objects and is not for limiting the order, sequence, priority, or importance of multiple objects. Similarly, terms like "first node" and "second node" are merely for convenience in describing new parameters in different implementations and do not indicate differences in their execution operations, importance, structure, etc.

[0151] In the above embodiments, the term "when..." can be interpreted, depending on the context, as meaning "if...", "before...", "determined...", or "detected...". The above descriptions are merely optional embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the concept and principles of this application should be included within the protection scope of this application.

[0152] Those skilled in the art will understand that all or part of the steps of the above embodiments can be implemented by hardware or by a program instructing related hardware. The program can be stored in a computer-readable storage medium, such as a read-only memory, a disk, or an optical disk.

Claims

1. A communication method, characterized in that, Applied to a first communication device, the method includes: Receive first information, wherein the cyclic redundancy check of the first information is scrambled by the identification information of the first communication device, and the first information includes paging physical downlink control channel (PDCCH) control information, wherein the paging PDCCH control information is used to indicate the time-frequency location of receiving the paging message; The first information is descrambled using its own identification information; The paging message is received based on the first information.

2. The method according to claim 1, characterized in that, The identification information of the first communication device includes any one of the following: The first communication device's subscription permanent identifier (SUPI) and the first communication device's fifth-generation mobile communication technology-system architecture evolution-temporary mobile subscription identifier (5G-S-TMSI) information.

3. The method according to claim 1 or 2, characterized in that, The number of bits of the identification information of the first communication device is less than or equal to the number of bits of the preset scrambled identification information.

4. A communication method, characterized in that, Applied to a second communication device, the method includes: Send first information to a first communication device, wherein the cyclic redundancy check of the first information is scrambled by the identification information of the first communication device, and the first information includes paging physical downlink control channel (PDCCH) control information, wherein the paging PDCCH control information is used to indicate the time-frequency location of receiving the paging message; Send the paging message to the first communication device.

5. The method according to claim 4, characterized in that, The identification information of the first communication device includes any one of the following: The first communication device's subscription permanent identifier (SUPI) and the first communication device's fifth-generation mobile communication technology-system architecture evolution-temporary mobile subscription identifier (5G-S-TMSI) information.

6. The method according to claim 4 or 5, characterized in that, The number of bits of the identification information of the first communication device is less than or equal to the number of bits of the preset scrambled identification information.

7. A communication device, characterized in that, The communication device includes a communication unit and a processing unit, the communication unit and the processing unit being used to perform the method as described in any one of claims 1-3.

8. A communication device, characterized in that, The communication device includes a communication unit and a processing unit, the communication unit and the processing unit being used to perform the method as described in any one of claims 4-6.

9. A communication device, characterized in that, The communication device includes a processor; When the processor invokes a computer program or instruction in memory, it causes the communication device to implement the method as described in any one of claims 1-3.

10. A communication device, characterized in that, The communication device includes a processor; When the processor invokes a computer program or instruction in memory, it causes the communication device to implement the method as described in any one of claims 4-6.

11. A communication device, characterized in that, It includes logic circuits and interfaces, wherein the logic circuits and the interfaces are coupled; The interface is used for inputting and / or outputting information, and the logic circuit is used to enable the communication device to implement the method as described in any one of claims 1-6.

12. The apparatus according to claim 11, characterized in that, The communication device is a chip or chip system.

13. A communication system, characterized in that, The communication system includes the communication device as described in claim 7 and the communication device as described in claim 8; or The communication system includes the communication device as described in claim 9 and the communication device as described in claim 10.

14. A computer-readable storage medium, characterized in that, The computer-readable storage medium is used to store instructions or computer programs; The instructions or the computer program are executed to implement the method as described in any one of claims 1-6.

15. A computer program product, characterized in that, include: Instructions or computer programs; The instructions or the computer program are executed to implement the method as described in any one of claims 1-6.

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