Communication method and related product

Abstract

Disclosed in the present application are a communication method and a related product. The method comprises: a network device sends in a first cell first system information to a UE, the first system information comprising system information of a plurality of cells; and, on the basis of the first system information, the UE initiates random access to a second cell. In the solution used in the present application, the network device sends in the first cell to a terminal device the first system information which comprises the system information of the plurality of cells and, on the basis of the first system information, the terminal device initiates random access to a cell among the plurality of cells, such that the plurality of cells do not need to separately send the system information of the plurality of cells themselves, thus efficiently sending the system information, and reducing the power consumption of the network device.

Description

Communication method and related products

[0001] This application claims priority to the Chinese Patent Application No. 202410720880.3, filed on June 3, 2024, and titled "Communication method and related products", 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 a communication method and related products. BACKGROUND

[0003] The mainstream deployment mode of the fifth generation (5 th Generation, 5G) new radio (NR) system is distributed homogenization deployment, which means that the network devices send system information (SI) of each cell in each cell to enable each cell to independently provide idle state residence and access functions.

[0004] However, the above-mentioned homogenization cell deployment mode is not conducive to improving system energy efficiency and coordinating cell resources, and the energy consumption of the network device is large.

[0005] Therefore, how to efficiently send system information and reduce the energy consumption of the network device is a problem to be solved. SUMMARY

[0006] The present application provides a communication method and related products to efficiently send system information and reduce the energy consumption of the network device.

[0007] In a first aspect, a communication method is provided. Exemplarily, the method can be applied to a terminal device side, for example, the method can be executed by a terminal device, or executed by a module (such as a processor, a chip, a chip system, a circuit, etc.) in the terminal device. The module can be a communication module in the terminal device, or a circuit or chip responsible for communication functions in the terminal device, such as a modem chip, also known as a baseband chip, or a system on chip (SoC) chip or a system in package (SIP) chip containing a modem core.

[0008] The method comprises: receiving, by a terminal device, first system information from a first cell, the first system information comprising system information of a plurality of cells, the plurality of cells comprising the first cell; and initiating, by the terminal device, random access to a second cell based on the first system information, the second cell being one of the plurality of cells.

[0009] With the method, the terminal device receives the first system information sent by the network device on the first cell, the first system information comprising system information of a plurality of cells, and the terminal device initiates random access to one of the plurality of cells based on the first system information, so that the plurality of cells do not need to send their own system information respectively, efficient transmission of system information is achieved, and the power consumption of the network device is reduced; and the terminal device can initiate random access to any one of the plurality of cells based on the first system information, so that the cell resources are coordinated.

[0010] In combination with the first aspect, in a possible implementation, the first system information comprises common system information of at least two cells of the plurality of cells.

[0011] With the method, the first system information comprises system information of at least two cells of the plurality of cells, and the terminal device initiates random access to one of the at least two cells based on the first system information, so that the plurality of cells do not need to send their own system information respectively, efficient transmission of system information is achieved, and the power consumption of the network device is reduced.

[0012] In combination with the first aspect, in another possible implementation, the at least two cells are located at the same frequency point; and / or the at least two cells belong to a first cell list.

[0013] In combination with the first aspect, in another possible implementation, the second cell is one of the at least two cells; and the method further comprises: determining system information of the second cell based on common system information of the at least two cells and a first parameter, the first parameter comprising a cell-specific parameter and / or a frequency point-specific parameter.

[0014] With the method, in addition to the common system information, the at least two cells can each have specific system information, and the UE can determine the system information of the second cell based on the common system information of the at least two cells and the first parameter. Exemplarily, the system information of the second cell can comprise common system information of the second cell and other cells and specific system information of the second cell, or the system information of the second cell comprises specific system information of the second cell.

[0015] With reference to the first aspect, in a further possible implementation of the first aspect, the cell-specific parameter comprises at least one of: an identity of a higher layer cell, an identity of a physical layer cell; and the frequency-specific parameter comprises at least one of: frequency information, frequency raster information.

[0016] With reference to the first aspect, in a further possible implementation of the first aspect, the method further comprises: determining system information of at least one beam of the second cell based on at least one of: common system information of the at least two cells, system information of the second cell, a first parameter, and a beam parameter, the first parameter comprising a cell-specific parameter and / or a frequency-specific parameter.

[0017] With the method of this implementation, one cell comprises at least one beam. Further, the system information of at least one beam of the second cell can be determined based on at least one of: common system information of the at least two cells, system information of the second cell, a first parameter, and a beam parameter.

[0018] With reference to the first aspect, in a further possible implementation of the first aspect, the first system information further comprises system information of the second cell.

[0019] With the method of this implementation, the system information of the second cell can be carried in the first system information, so that the UE can accurately acquire the system information of the second cell.

[0020] With reference to the first aspect, in a further possible implementation of the first aspect, the first system information further comprises system information of at least one beam of the second cell.

[0021] With the method of this implementation, the system information of at least one beam of the second cell can be carried in the first system information, so that the UE can accurately acquire the system information of at least one beam of the second cell.

[0022] With reference to the first aspect, in a further possible implementation of the first aspect, the first system information further comprises common system information of at least one beam of the second cell.

[0023] With reference to the first aspect, in a further possible implementation of the first aspect, the first cell is an anchor cell, and the plurality of cells comprises at least one neighboring anchor cell and / or at least one non-anchor cell.

[0024] With reference to the first aspect, in a further possible implementation of the first aspect, the first cell is a first camped cell currently camped by the terminal device, and the plurality of cells comprises at least one second camped cell currently not camped by the terminal device and / or at least one non-camped cell.

[0025] With reference to the first aspect, in a further possible implementation of the method, the second cell is one of the at least one second camped cell; and before the initiating the random access to the second cell based on the first system information, the method further includes: performing cell reselection to camp on the second cell.

[0026] With reference to the first aspect, in a further possible implementation of the method, the second cell is one of the at least one non-camped cell; and the initiating the random access to the second cell based on the first system information includes: initiating the random access to the second cell based on the first system information while camping on the first cell.

[0027] With reference to the first aspect, in a further possible implementation of the method, the first system information includes at least one of: minimum system information of the at least one second camped cell, on-demand system information of the at least one second camped cell, minimum system information of the at least one non-camped cell, on-demand system information of the at least one non-camped cell.

[0028] With the method of this implementation, by including at least one of: minimum system information of the at least one second camped cell, on-demand system information of the at least one second camped cell, minimum system information of the at least one non-camped cell, on-demand system information of the at least one non-camped cell in the first system information, on-demand wake-up and sleep of the non-camped cell can be realized to improve system energy efficiency, or to increase smooth mobility of cell reselection.

[0029] With reference to the first aspect, in a further possible implementation of the method, the at least one second camped cell has common system information, and / or the at least one non-camped cell has common system information.

[0030] With reference to the first aspect, in a further possible implementation of the method, the first system information includes: on-demand system information and minimum system information of the first cell, the on-demand system information including at least one of: on-demand system information of the first cell, on-demand system information of the at least one camped cell, minimum system information of the at least one camped cell, on-demand system information of the at least one non-camped cell, minimum system information of the at least one non-camped cell.

[0031] With reference to the first aspect, in a further possible implementation of the method, before the initiating the random access to the second cell based on the first system information, the method further includes: determining the second cell based on a second parameter; or determining a first frequency based on a second parameter, the second cell being located at the first frequency; wherein the second parameter includes at least one of: service information, state of a cell, state of a terminal.

[0032] By using the implemented method, the terminal device can determine the second cell based on the second parameter, so that the terminal device can accurately determine the second cell with less overhead.

[0033] Exemplarily, the service information can be a service identifier. The service identifier can be used to identify a type of service. The network device can notify the correspondence between the service and the service identifier through system information or the like, or the correspondence between the service and the service identifier can be predefined by a protocol. The type of service can be defined according to at least one of the dimensions of service data volume, data rate, packet size, latency requirement, etc., or can be defined according to the dimensions of audio, video, telephone, etc., or a combination of the above dimensions.

[0034] In combination with the first aspect, in yet another possible implementation, the first system information is further used to indicate an association relationship between the second cell and the second parameter; and the determining the second cell based on the second parameter comprises determining the second cell based on the second parameter and the association relationship between the second cell and the second parameter.

[0035] In combination with the first aspect, in yet another possible implementation, the method further comprises receiving paging information from the first cell, the paging information being used to indicate at least one of the following parameters: service information, state of a cell; and wherein the paging information comprises at least one of the following: a paging message, scheduling information of the paging message, a paging early indication message, scheduling information of the paging early indication message, a wake-up signal, scheduling information of the wake-up signal, a low-power wake-up signal, and scheduling information of the low-power wake-up signal.

[0036] In combination with the first aspect, in yet another possible implementation, the method further comprises receiving paging information from the first cell, the paging information being used to indicate the second cell; or receiving paging information from the first cell, the paging information being used to indicate a first frequency point, and the second cell being located at the first frequency point; and wherein the paging information comprises at least one of the following: a paging message, scheduling information of the paging message, a paging early indication message, scheduling information of the paging early indication message, a wake-up signal, scheduling information of the wake-up signal, a low-power wake-up signal, and scheduling information of the low-power wake-up signal.

[0037] By using the implemented method, the second cell or the first frequency point can be accurately determined through the explicit indication of the second cell or the first frequency point in the paging information.

[0038] In a second aspect, a communication method is provided. Exemplarily, the method can be applied to a network device side, for example, the method can be performed by a network device, or performed by a module (e.g., a processor, a chip, a chip system, a circuit, etc.) in the network device. The module can be a communication module in the network device, or a circuit or chip responsible for communication functions in the network device, such as a modem chip, also known as a baseband chip, or a SOC chip or SIP chip containing a modem core.

[0039] The method includes: sending, by a network device, first system information on a first cell, the first system information including system information of a plurality of cells, the plurality of cells including the first cell.

[0040] With the method in this aspect, the network device sends the first system information on the first cell to the terminal device, the first system information including system information of a plurality of cells, and the terminal device initiates random access to one of the plurality of cells based on the first system information, so that the plurality of cells do not need to send their own system information respectively, and efficient system information transmission can be achieved, reducing the power consumption of the network device; and the terminal device can initiate random access to any one of the plurality of cells based on the first system information, realizing coordination of cell resources.

[0041] In combination with the second aspect, in a possible implementation, the first system information includes common system information of at least two cells in the plurality of cells.

[0042] In combination with the second aspect, in another possible implementation, the at least two cells are located at the same frequency point; and / or the at least two cells belong to a first cell list.

[0043] In combination with the second aspect, in another possible implementation, the first system information further includes system information of a second cell, the second cell being one of the plurality of cells.

[0044] In combination with the second aspect, in another possible implementation, the first system information further includes system information of at least one beam of a second cell, the second cell being one of the plurality of cells.

[0045] In combination with the second aspect, in another possible implementation, the first system information further includes common system information of at least one beam of a second cell, the second cell being one of the plurality of cells.

[0046] In combination with the second aspect, in another possible implementation, the first cell is a first camped cell, and the plurality of cells include at least one second camped cell and / or at least one non-camped cell.

[0047] With reference to the second aspect, in a further possible implementation of the second aspect, the first system information comprises at least one of: minimum system information of the at least one second camped cell, on-demand system information of the at least one second camped cell, minimum system information of the at least one non-camped cell, on-demand system information of the at least one non-camped cell.

[0048] With reference to the second aspect, in a further possible implementation of the second aspect, the at least one second camped cell has common system information, and / or the at least one non-camped cell has common system information.

[0049] With reference to the second aspect, in a further possible implementation of the second aspect, the first system information comprises: on-demand system information and minimum system information of the first cell, the on-demand system information comprising at least one of: on-demand system information of the first cell, on-demand system information of the at least one camped cell, minimum system information of the at least one camped cell, on-demand system information of the at least one non-camped cell, minimum system information of the at least one non-camped cell.

[0050] With reference to the second aspect, in a further possible implementation of the second aspect, the method further comprises: receiving a random access signal on at least one cell of the plurality of cells.

[0051] With reference to the second aspect, in a further possible implementation of the second aspect, the method further comprises: transmitting, on the first cell, paging information, the paging information being used to indicate a second parameter, the second parameter comprising at least one of: service information, state of a cell; wherein the paging information comprises at least one of: a paging message, scheduling information of the paging message, a paging early indication message, scheduling information of the paging early indication message, a wake-up signal, scheduling information of the wake-up signal, a low-power wake-up signal, scheduling information of the low-power wake-up signal.

[0052] With reference to the second aspect, in a further possible implementation of the second aspect, the first system information further comprises an association relationship between the second parameter and the plurality of cells.

[0053] With reference to the second aspect, in a further possible implementation of the second aspect, the method further comprises: transmitting, on the first cell, paging information, the paging information being used to indicate the second cell; or transmitting, on the first cell, paging information, the paging information being used to indicate a first frequency point, the second cell being located at the first frequency point; wherein the paging information comprises at least one of: a paging message, scheduling information of the paging message, a paging early indication message, scheduling information of the paging early indication message, a wake-up signal, scheduling information of the wake-up signal, a low-power wake-up signal, scheduling information of the low-power wake-up signal.

[0054] With reference to the second aspect, in a further possible implementation, the receiving the random access signal on at least one of the plurality of cells comprises:

[0055] receiving the random access signal on the second cell.

[0056] A third aspect provides a communication apparatus, configured to implement the communication method in the first aspect or any of the possible implementations of the first aspect. The apparatus can be a terminal device, or a module (for example, a processor, a chip, or a chip system, etc.) applied to a terminal device, or a logic node, a logic module, or software capable of realizing all or part of the functions of a terminal device.

[0057] A fourth aspect provides a communication apparatus, configured to implement the communication method in the second aspect or any of the possible implementations of the second aspect. The apparatus can be a network device, or a module (for example, a processor, a chip, or a chip system, etc.) applied to a network device, or a logic node, a logic module, or software capable of realizing all or part of the functions of a network device.

[0058] In a possible implementation, the communication apparatus in the third aspect to the fourth aspect comprises units, modules, or means for performing the methods in any of the first aspect to the second aspect or any of the possible implementations. The units, modules, or means can be implemented by software, or by hardware, or by a combination of software and hardware.

[0059] In another possible implementation, the communication apparatus in the third aspect to the fourth aspect comprises a processor, and the processor is configured to implement the functions of the apparatus in the communication methods.

[0060] Optionally, the processor can be coupled with a memory for storing programs (instructions) and / or data necessary for the apparatus. Optionally, the communication apparatus can further comprise a communication interface for enabling communication between the apparatus and other network elements. Optionally, the memory can be located inside the communication apparatus, or located outside the communication apparatus.

[0061] Optionally, the communication apparatus can further comprise a transceiver, and the processor is coupled to the transceiver, and is configured to execute the computer program or instructions to control the transceiver to receive and send information; when the processor executes the computer program or instructions, the processor is further configured to realize the above method through a logic circuit or an execution code instruction. The transceiver can be a transceiver, a transceiver circuit or an input / output interface, which is configured to receive a signal from another communication apparatus outside the communication apparatus and transmit the signal to the processor, or send a signal from the processor to another communication apparatus outside the communication apparatus. When the communication apparatus is a chip, the transceiver is a transceiver circuit or an input / output interface.

[0062] When the communication apparatus in the third aspect to the fourth aspect is a chip, the sending unit can be an output unit, such as an output circuit or a communication interface; and the receiving unit can be an input unit, such as an input circuit or a communication interface. When the communication apparatus is a terminal device, the sending unit can be a transmitter or a transmitter; and the receiving unit can be a receiver or a receiver.

[0063] In a fifth aspect, a computer readable storage medium is provided, and the computer readable storage medium stores a computer program or instructions, and when the computer program or instructions are executed, the method in the above aspects is realized.

[0064] In a sixth aspect, a computer program product is provided, and the computer program product comprises instructions, and when the instructions are executed on a communication apparatus, the communication apparatus performs the method in the above aspects. BRIEF DESCRIPTION OF DRAWINGS

[0065] FIG. 1 is a schematic diagram of a possible, non-limiting communication system;

[0066] FIG. 2 is a flow diagram of a communication method provided by an embodiment of the present application;

[0067] FIG. 3 is a schematic diagram of a relationship between different types of cells and system information according to an embodiment of the present application;

[0068] FIG. 4 is a schematic diagram of a transmission architecture of first system information according to an embodiment of the present application;

[0069] FIG. 5 is a flow diagram of another communication method provided by an embodiment of the present application;

[0070] FIG. 6 is a schematic diagram of an association between service information and candidate cells according to an embodiment of the present application;

[0071] FIG. 7 is a flow diagram of another communication method provided by an embodiment of the present application;

[0072] Figure 8 is a schematic diagram of the structure of a communication device provided in an embodiment of this application;

[0073] Figure 9 is a schematic diagram of the structure of another communication device provided in an embodiment of this application. Detailed Implementation

[0074] The scheme of this application will be further described below with reference to the accompanying drawings.

[0075] The technical solution provided in this application can be applied to various communication systems, such as fifth-generation (5G) communication systems. th This technology can be applied to various scenarios, including 5G mobile communication systems, future evolution systems, and converged communication systems, as well as existing communication systems. The application scenarios of the technical solutions provided in this application can include multiple areas, such as machine-to-machine (M2M), macro-micro communication, enhanced mobile broadband (eMBB), ultra-reliable and low-latency communication (uRLLC), and massive machine-type communication (mMTC). These scenarios may include, but are not limited to, communication between terminal devices, communication between network devices, and communication between network devices and terminal devices. Network devices include access network devices and core network devices. The following descriptions use examples of communication between network devices and terminal devices.

[0076] Figure 1 illustrates a possible, non-limiting communication system. As shown in Figure 1, the communication system 1000 includes a radio access network (RAN) 100 and a core network (CN) 200. The communication system 1000 may also include an Internet 300. RAN 100 includes at least one RAN node (110a and 110b in Figure 1, collectively referred to as 110) and at least one terminal device (120a-120j in Figure 1, collectively referred to as 120). RAN 100 may also include other RAN nodes, such as wireless relay devices and / or wireless backhaul devices (not shown in Figure 1). Terminal device 120 is wirelessly connected to RAN node 110. RAN node 110 is wirelessly or wired connected to core network 200. The core network devices in core network 200 and RAN node 110 in RAN 100 can be different physical devices, or they can be the same physical device integrating core network logical functions and radio access network logical functions.

[0077] The RAN 100 can be a 3rd generation partnership project (3GPP) -related cellular system, e.g., a 4G, 5G mobile communication system, or a future-oriented evolved system, e.g., a 6G mobile communication system. The RAN 100 can also be an open radio access network (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.

[0078] The RAN node 110 can also be referred to as a network device, an access network device, a RAN entity, or an access node, etc., which constitutes part of the communication system, and is configured to help the terminal device to implement wireless access. The plurality of RAN nodes 110 in the communication system 1000 can be nodes of the same type or nodes of different types. In some scenarios, the roles of the RAN node 110 and the terminal device 120 are relative, for example, the network element 120i in FIG. 1 can be a helicopter or a drone, which can be configured as a mobile base station, and for those terminal devices 120j that access the RAN 100 through 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 node 110 and the terminal device 120 are sometimes collectively referred to as communication apparatuses, for example, the network elements 110a and 110b in FIG. 1 can be understood as communication apparatuses with base station functions, and the network elements 120a-120j can be understood as communication apparatuses with terminal device functions.

[0079] In a possible scenario, the RAN node can be a base station, an evolved NodeB (eNodeB), an access point (AP), a transmission reception point (TRP), a next generation NodeB (gNB), a next generation base station in a 6th generation (6G) mobile communication system, a base station in a future mobile communication system, or an access node in a WiFi system, etc. The RAN node can be a macro base station (such as 110a in FIG. 1), a micro base station or an indoor station (such as 110b in FIG. 1), 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, the network device in a vehicle to everything (V2X) technology can be a road side unit (RSU).

[0080] 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, the RAN node can be a central unit (CU), a distributed unit (DU), a central unit-control plane (CU-CP), a central unit-user plane (CU-UP), or a radio unit (RU), etc. The CU and the DU can be separately arranged, or can be included in the same network element, such as a baseband unit (BBU). The RU can be included in a radio frequency device or a radio frequency unit, such as a radio frequency remote unit (RRU), an active antenna processing unit (AAU), or a remote radio head (RRH).

[0081] The CU (or CU-CP and CU-UP), DU or RU can also have different names in different systems, 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 open-central unit (O-CU), the DU can also be referred to as an open-distributed unit (O-DU), the CU-CP can also be referred to as an open-central unit-control plane (O-CU-CP), the CU-UP can also be referred to as an open-central unit-user plane (O-CU-UP), and the RU can also be referred to as an open-radio unit (O-RU). For the sake of convenience, the CU, CU-CP, CU-UP, DU and RU are taken as examples for description in this application. Any 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.

[0082] The terminal device can also be referred to as a terminal, a user equipment (UE), a mobile station, a mobile terminal device, etc. The terminal device can be widely applied to various scenarios, such as device-to-device (D2D) communication, vehicle to everything (V2X) communication, machine-type communication (MTC), internet of things (IOT), virtual reality, augmented reality, industrial control, automatic driving, remote medical treatment, smart power grid, smart furniture, smart office, smart wear, smart transportation, smart city, etc. The terminal device can be a mobile phone, a tablet computer, a computer with wireless transceiver function, a wearable device, a vehicle, a drone, a helicopter, an airplane, a ship, a robot, a mechanical arm, a smart home device, etc. Embodiments of the present application do not limit the device form of the terminal device.

[0083] The communication between the network device and the terminal device follows a certain protocol layer structure. The protocol layer can include a control plane protocol layer and a user plane protocol layer. The control plane protocol layer can include at least one of a radio resource control (RRC) layer, a packet data convergence protocol (PDCP) layer, a radio link control (RLC) layer, a media access control (MAC) layer, or a physical (PHY) layer, and the like. The user plane protocol layer can include at least one of a service data adaptation protocol (SDAP) layer, a PDCP layer, an RLC layer, a MAC layer, or a physical layer, and the like.

[0084] The base station and the terminal device can be fixed in position or movable. The base station and the terminal device can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; can also be deployed on water; can also be deployed on an airplane, a balloon, and a man-made satellite. The embodiments of the present application do not limit the application scenarios of the base station and the terminal device.

[0085] The roles of the base station and the terminal device can be relative, for example, the helicopter or the unmanned aerial vehicle 120i in FIG. 1 can be configured as a mobile base station, and for the terminal device 120j that accesses the wireless access network 100 through 120i, the terminal device 120i is a base station; but for the base station 110a, 120i is a terminal device, that is, 110a and 120i communicate through a wireless air interface protocol. Of course, 110a and 120i can also communicate through a base station-to-base station interface protocol, at this time, relative to 110a, 120i is also a base station. Therefore, the base station and the terminal device can be collectively referred to as a communication apparatus, 110a and 110b in FIG. 1 can be referred to as a communication apparatus with a base station function, and 120a-120j in FIG. 1 can be referred to as a communication apparatus with a terminal device function.

[0086] In the embodiments of the present application, the base station is also referred to as a network device, and the apparatus for implementing the functions of the network device can be a network device; can also be an apparatus capable of supporting the network device to implement the functions, such as a chip system, a hardware circuit, a software module, or a hardware circuit plus a software module. The apparatus can be installed in the network device or used in combination with the network device. In the embodiments of the present application, only the apparatus for implementing the functions of the network device is taken as an example for description, and the scheme of the embodiments of the present application is not limited.

[0087] In addition, in the embodiments of the present application, the UE is also referred to as a terminal device, and the apparatus for implementing the functions of the terminal device can be a terminal device, or can be an apparatus capable of supporting the terminal device to implement the functions, such as a chip system, a hardware circuit, a software module, or a hardware circuit plus a software module. The apparatus can be installed in the terminal device or used in combination with the terminal device. In the embodiments of the present application, only the apparatus for implementing the functions of the terminal device is taken as an example for description, and the scheme of the embodiments of the present application is not limited in this way.

[0088] It should be understood that the number and types of devices in the communication system shown in FIG. 1 are only illustrative, and the present application is not limited thereto. In actual applications, more terminal devices, more access network devices, and other network elements, such as core network devices and / or network elements for implementing artificial intelligence functions, can also be included in the communication system.

[0089] It can be understood that all or part of the functions implemented by one or more of the terminal device, the access network device, the core network device, or the network element for implementing the artificial intelligence function can be virtualized, that is, implemented by one or more of a special processor or a general processor and a corresponding software module. Among them, the terminal device and the access network device involve the interface of air interface transmission, and the transceiving function of the interface can be realized by hardware. The core network device, such as an operation administration and maintenance (OAM) network element, can be virtualized. Optionally, one or more functions of the virtualized terminal device, access network device, core network device, or network element for implementing the artificial intelligence function can be implemented by a cloud device, such as a cloud device in an over the top (OTT) system.

[0090] 5G NR system compared with the fourth generation (4 th generation,4G) long term evolution (LTE) system, due to the adoption of multi-input multi-output (MIMO) technology, the number of base station channels is greatly improved, such as the typical C-band deployed base station will use 64 or even 128 channels, and in the future in the 6GHz frequency band, 256 or even 512 channels may also be used, which leads to a significant increase in the power consumption of a single base station of 5G compared with 4G. Therefore, base station energy saving is an important problem of 5G.

[0091] The mainstream deployment mode of the 5G NR system is distributed homogeneous deployment, that is, the cellular cells are loosely coupled or not coupled, and each cell transmits synchronization signals, system information, paging, and the like of the cell to enable each cell to independently provide idle-state camping and access functions.

[0092] Under the above distributed homogeneous deployment, the cell camping mechanism is as follows:

[0093] When the UE is powered on or moves between cells, it needs to find a cell for camping, and the process mainly includes cell selection and cell reselection.

[0094] For cell selection, after the UE is powered on or recovers from no coverage, it finds a cell that meets a signal condition (such as reference signal receiving quality (RSRQ) or reference signal receiving power (RSRP) exceeding a certain threshold) by searching for synchronization signals of surrounding cells and based on radio resource management (RRM) measurement results, reads system information of the selected cell, and then monitors paging that may be sent by the network on the cell and initiates random access through the cell, which is called UE camping on the cell.

[0095] For cell reselection, after the UE camps on a cell, it also monitors the signal condition of surrounding cells, and if a better cell is found than the current camping cell, such as meeting certain cell reselection conditions, the UE can perform cell reselection and camp on the better cell.

[0096] Under the above distributed homogeneous deployment, the cell initial access mechanism is as follows:

[0097] After completing cell camping, the idle-state UE continuously performs signal measurement on the camping cell and neighboring cells to ensure possible cell reselection under mobility; the UE also periodically monitors paging that may be sent by the network on the camping cell to discover whether there is downlink service triggering or system information change.

[0098] Once there is service demand, the UE needs to initiate random access from the idle state to the connected state, which specifically includes:

[0099] For downlink service triggering, the network device sends paging to the UE in a larger tracking area, and the UE receives the paging on its own camping cell, and then initiates random access to enter the connected state from the idle state to perform service transmission.

[0100] For uplink service triggering, the UE initiates random access to its camping cell directly, and enters the connected state from the idle state to perform service transmission.

[0101] From the above description, it can be seen that under the above homogeneous cell deployment, each cell needs to independently send the synchronization signal, system information, paging, etc. of the cell to enable each cell to independently provide the camping and access functions of the idle state. This method is not conducive to system high energy efficiency and cell resource coordination, and affects efficient use of resources and service guarantee.

[0102] Therefore, the present application provides a communication scheme. The network device sends first system information to the terminal device on the first cell, the first system information includes system information of multiple cells, and the terminal device initiates random access to one of the multiple cells based on the first system information, so that the multiple cells do not need to send their own system information respectively, and efficient transmission of system information can be achieved, reducing the power consumption of the network device.

[0103] In the embodiments of the present application, the execution subject can be a terminal device (for example, UE), a network device, or a module (for example, a processor, a chip, a chip system, a circuit, etc.) in the terminal device or the network device. Hereinafter, the execution subject is taken as an example of the UE and the network device. When the execution subject is a module in the terminal device or the network device, the receiving / sending can be understood as input / output, that is, the module communicates with other modules or components of the terminal device or the network device. In addition, the processing performed by a single execution subject can also be divided into processing performed by multiple execution subjects, which can be logically and / or physically separated. For example, the processing performed by the network device can be divided into processing performed by at least one of the CU, the DU, the RU, etc.

[0104] As shown in FIG. 2, a flowchart of a communication method provided by an embodiment of the present application is shown. The method can include the following steps:

[0105] S201. The network device sends first system information to the UE on the first cell.

[0106] Correspondingly, the UE receives the first system information.

[0107] The network device sends first system information to the UE on a first cell, which is a cell where the UE currently camps. The camping refers to a series of operations of the UE in an idle state, including RRM measurement, monitoring paging, monitoring system information, etc. In this application, the cell is described as a concept. It can be understood that the cell is a specific description of a resource unit, and other similar descriptions are not excluded as long as it can represent a resource unit. For example, this application does not distinguish the following concepts: cell, carrier, bandwidth part, frequency unit, station, and transceiver point, unless otherwise specified.

[0108] The first system information includes system information of a plurality of cells. The plurality of cells can be referred to as a candidate cell set, which refers to cells that the UE can access, and the candidate cell set includes the plurality of cells. The plurality of cells includes the first cell.

[0109] (1) Common system information

[0110] Exemplarily, the first system information includes common system information of at least two cells of the plurality of cells. The at least two cells can be part of the plurality of cells, or all of the plurality of cells. That is, at least two cells of the plurality of cells can share common system information of a cell, that is, the system information of the at least two cells is the same or common. In the case where the at least two cells are part of the plurality of cells, the first system information can further include common system information of other cells of the plurality of cells.

[0111] The common system information includes at least one of the following information: number of beams, time division duplexing (TDD) configuration, random access channel (RACH) configuration, paging configuration, and downlink wake-up signal configuration (such as used to wake up the UE to receive paging, wake up the main receiver of the UE, etc.).

[0112] In an implementation, at least two cells of the plurality of cells are located on the same or similar frequency point, that is, at least two cells of the plurality of cells located on the same frequency point can share common system information. For example, the plurality of cells are distributed on two frequency points (frequency point 1 and frequency point 2), and 5 cells are deployed on each frequency point. Then, the system information of the 5 cells on the same frequency point can be partially or wholly common. That is, the 5 cells of the frequency point 1 share part or all of the same system information SI1-1; the 5 cells of the frequency point 2 also share part or all of the same system information SI1-2. The system information between the cells on the two frequency points (that is, the system information other than the common system information) can be independently configured.

[0113] In another implementation, at least two of the plurality of cells belong to a first cell list, i.e., at least two cells belonging to the same cell list in the plurality of cells can share common system information. The cells in the first cell list have common system information. For example, the plurality of cells are distributed over two frequency points (frequency point 1 and frequency point 2), and each frequency point has 5 cells deployed. The 5 cells on frequency point 1 are distributed in two cell lists: 3 of the 5 cells on frequency point 1 belong to cell list 1 and share common system information SI-1-1; the remaining 2 cells on the frequency point 1 belong to cell list 2 and share common system information SI-1-2. The 5 cells on frequency point 2 are also distributed in two cell lists: 3 of the 5 cells on frequency point 2 belong to cell list 3 and share common system information SI-2-1; the remaining 2 cells on the frequency point 2 belong to cell list 4 and share common system information SI-2-2. In another example, common system information can also be shared across frequency points, such as 3 of the cells on frequency point 1 and 3 of the cells on frequency point 2 belong to cell list 5 and share common system information SI-3; the remaining 2 cells on the frequency point 1 and 2 belong to cell list 6 and share common system information SI-4. Exemplarily, the cell lists can be configured by the network device or pre-configured in the UE. To avoid excessive overhead, the cells included in a cell list can be determined according to the locations or distances between the cells.

[0114] The two implementations described above can be combined with each other. For example, at least two of the plurality of cells that are located on the same frequency point and belong to the same cell list share common system information. For another example, for some of the plurality of cells, at least two cells located on the same frequency point share common system information, and for another part of the plurality of cells, at least two cells belonging to the same cell list share common system information.

[0115] (2) System information of the second cell

[0116] The above describes that at least two of the plurality of cells can have common system information, which is carried in the first system information. In addition to the common system information, the at least two cells can also have specific system information for each cell. That is, the at least two cells can have cell-specific system information independent of each other. The part of the system information of the at least two cells is independent of each other or carried by independent signaling. Exemplarily, the cell-specific system information can include configuration information of cell selection, cell access, cell reselection, etc., and can also include part or all of RACH configuration, part or all of paging configuration, etc.

[0117] As to how to determine the cell-specific system information, there can be the following two implementations:

[0118] In one implementation, the UE can determine the system information of the second cell based on the common system information of the at least two cells and the first parameter. The second cell can be one of the at least two cells, which can be referred to as a target cell. Exemplarily, the system information of the second cell can be understood as the specific system information of the second cell, or can be understood as including the common system information of the at least two cells and the specific system information of the second cell. That is, the first system information described above can not carry part or all of the specific system information of the second cell, and the UE determines the missing system information based on the common system information described above.

[0119] The first parameter includes a cell-specific parameter (the first parameter can be replaced by the cell-specific parameter), or the first parameter includes a frequency point-specific parameter (the first parameter can be replaced by the frequency point-specific parameter), or the first parameter includes a cell-specific parameter and a frequency point-specific parameter (the first parameter can be replaced by the cell-specific parameter and the frequency point-specific parameter).

[0120] Exemplarily, the cell-specific parameter includes at least one of the following: a high-layer cell identifier, a physical-layer cell identifier. The high-layer cell identifier can be understood as a cell identifier notified by a high-layer signaling, including a non-physical-layer signal carrying identifier that can represent a cell, such as a cell global identity (CGI). The physical-layer cell identifier can be a cell identifier carried by a high-layer signaling and / or a cell synchronization signal.

[0121] Exemplarily, the frequency point-specific parameter includes at least one of the following: frequency point information (or carrier information), frequency grid information. The frequency point information can be, for example, center frequency point information.

[0122] The cell-specific parameter and the frequency point-specific parameter described above can be configured to the UE by a network device through signaling, can be acquired by the UE by detecting a signal (such as a synchronization signal) of the network device, or can be standard predefined, and the present application does not limit this.

[0123] The following describes how the UE determines the system information of the second cell based on the common system information of the at least two cells and the first parameter through several examples:

[0124] In one example, taking the RACH configuration as an example, the cell-common system information can be a RACH common resource pool (including time domain, frequency domain, preamble domain resource), and then the UE can determine the specific system information of the second cell corresponding to the identification information of the second cell from the above RACH common resource pool based on the cell-specific parameter (such as the identification information of the second cell), that is, the RACH resource of the second cell. Specifically, it can be to take the identification of the second cell as a resource in the resource pool to determine the resource starting point, and then combine the cell-common or specific resource amount to determine the RACH resource of the second cell; or it can also be based on the RACH resource starting point of the cell-common, plus the specific resource offset of the second cell (the offset can be calculated from the identification information of the second cell), and then determine the RACH resource starting point of the second cell, and then combine the cell-common or specific resource amount to determine the RACH resource of the second cell.

[0125] In another example, taking the paging configuration information as an example, the cell-common system information can be a paging common resource pool (including paging frame (PF), paging occasion (PO), etc.), and then the UE can determine the specific system information of the second cell corresponding to the identification information of the second cell from the above paging common resource pool based on the cell-specific parameter (such as the identification information of the second cell), that is, the paging resource (such as paging frame, paging occasion, etc.) of the second cell. The specific implementation mode can refer to the embodiment of the RACH configuration described above.

[0126] Similarly, the specific other system information of the second cell can also be determined, such as the indication information of the wake-up paging, the indication information of the wake-up low-power receiver, etc.

[0127] Similarly, the system information of the second cell can also be determined based on the common system information of at least two cells and the frequency point-specific parameter.

[0128] In another implementation, the system information of the second cell is included in the first system information described above, i.e., the first system information includes the system information common to the cells and the specific system information of all or part of the plurality of cells. For example, the plurality of cells are distributed on two frequency points (frequency point 1 and frequency point 2), and 5 cells are deployed on each frequency point. Taking the 5 cells on one frequency point (e.g., frequency point 1) as an example, the first system information includes the system information common to the 5 cells as common SI-1, and the system information common to the 5 cells on another frequency point (e.g., frequency point 2) as common SI-2. In addition, the first system information further includes the specific system information of each cell in the plurality of cells, which are the cell-specific system information of the cells on frequency point 1: {SI-1-1, SI-1-2, SI-1-3, SI-1-4, SI-1-5} and the cell-specific system information of the cells on frequency point 2: {SI-2-1, SI-2-2, SI-2-3, SI-2-4, SI-2-5}.

[0129] The two implementation manners described above can be combined with each other. For example, the first system information described above can include the specific system information of part of the plurality of cells, but not the specific system information of another part of the cells, and the UE determines the missing system information of the cells based on the common system information of the another part of the cells. For another example, the first system information described above can include part of the specific system information of the second cell, but not another part of the specific system information of the second cell, and the UE determines the missing system information of the second cell based on the common system information of at least two cells (including the second cell).

[0130] (3) System information of at least one beam of the second cell

[0131] A cell includes at least one beam. Further, the system information of at least one beam of the second cell can be determined. The second cell is one of the at least two cells.

[0132] Similar to the system information of the cell, the system information of the beams of the second cell can comprise specific system information of each of the at least one beam of the second cell. Further, the system information of the beams of the second cell can also comprise common system information of the at least one beam of the second cell. Wherein, the common system information of the at least one beam of the second cell can be included in the above-mentioned system information of the second cell (the specific system information of the second cell or the common system information of the at least two cells), i.e. the common system information of the beams only means that the system information is common to the at least one beam within the second cell, and does not limit whether the system information is cell-specific or cell-common to multiple cells. For example, the common system information of the at least one beam of the second cell can be the part of the specific system information of the second cell except the specific system information of each of the at least one beam of the second cell, or can be the part of the common system information of the at least two cells except the specific system information of each of the at least one beam of each of the at least two cells.

[0133] Wherein, the specific system information of each of the at least one beam comprises at least one of the following information: power configuration information of the beam (such as power of a synchronization signal or a reference signal), number of beams in different beam directions (such as number of synchronization signals), period of beams in different beam directions (such as period of synchronization signals). The common system information of the at least one beam of the second cell can exemplarily comprise TDD uplink-downlink ratio information, which is common to multiple beams within the second cell, or even common to the second cell and other same-frequency cells, i.e. the information is common to beams and common to cells. Alternatively, the common system information of the at least one beam of the second cell can exemplarily comprise cell selection configuration information specific to the second cell, i.e. the configuration information is second-cell-specific and independent of other cells, but is common to multiple beams within the second cell.

[0134] As to how to determine the system information of the at least one beam of the second cell, there can be two implementations as follows:

[0135] In one implementation, the UE can determine the system information of the at least one beam of the second cell based on at least one of the common system information of the at least two cells, the system information of the second cell, the first parameter, and the beam parameter. The first parameter comprises cell-specific parameter and / or frequency point-specific parameter, and specific meanings are referred to the above description.

[0136] From the above description, the common system information of the at least one beam of the second cell can be included in the system information of the second cell, or included in the common system information of the at least two cells. Then, the UE can determine the system information of each of the at least one beam of the second cell based on the common system information of the at least one beam of the second cell and the beam parameter, which can be divided into two cases as follows.

[0137] In case one, when the common system information of the at least one beam of the second cell is included in the system information of the second cell, the UE can determine the system information of each of the at least one beam of the second cell based on the system information of the second cell and the beam parameter. The indication of one beam can be all or part of the beams of the second cell.

[0138] In case two, when the common system information of the at least one beam of the second cell is included in the common system information of the at least two cells (including the second cell), the UE can determine the system information of each of the at least one beam of the second cell based on the common system information of the at least two cells and the beam parameter, or the UE can determine the system information of each of the at least one beam of the second cell based on the common system information of the at least two cells, the first parameter and the beam parameter.

[0139] The above two cases can be combined with each other. For example, part of the common system information of the at least one beam of the second cell can be included in the system information of the second cell, and another part of the common system information of the at least one beam can be included in the common system information of the at least two cells, and the corresponding part of the system information of each of the at least one beam is determined according to case one and case two respectively. For another example, part of the common system information of the beams of the second cell can be included in the system information of the second cell, and another part of the common system information of the beams of the second cell can be included in the common system information of the at least two cells, and the system information of each of the part of the beams is determined according to case one, and the system information of each of the other part of the beams is determined according to case two.

[0140] The above beam parameter can include at least one of the following: an identifier of the beam, an index of the synchronization signal block, or other parameters that can represent the concept of the beam, such as that the transmission of some information content of the cell needs to be performed by beam sweeping, and each beam sweeping can be based on the beam-specific transmission configuration indicator (TCI).

[0141] The manner in which the UE determines the system information of the at least one beam of the second cell can refer to the manner in which the UE determines the system information of the second cell.

[0142] For example, the power configuration of the beam, the UE determines the specific system information of the beam corresponding to the identification information of the beam from the power configuration of the second cell based on the first parameter and the common system information of the at least two cells.

[0143] For example, the RACH configuration, the UE can determine the specific RACH resource pool of the second cell in the above-mentioned common resource pool based on the cell identification and the beam identification, which can be determined by the above-mentioned modulo operation, the RACH resource offset, or the pre-configured or set association relationship.

[0144] In another implementation, the system information of the at least one beam of the second cell is included in the first system information. For example, the above-mentioned multiple cells are distributed on two frequency points (frequency point 1 and frequency point 2), and 5 cells are deployed on each frequency point. The first system information can include the specific system information of each beam of the multiple beams of cell 1 on frequency point 1: {SI-1-1-1, SI-1-1-2, SI-1-1-3, SI-1-1-4, SI-1-1-5}; the specific system information of each beam of the multiple beams of cell 2 on frequency point 1: {SI-1-2-1, SI-1-2-2, SI-1-2-3, SI-1-2-4, SI-1-2-5}; and the specific system information of the beams of the other cells on frequency point 1 and the cells on frequency point 2 can be determined similarly.

[0145] For example, the system information of the at least one beam of the second cell can be the specific system information of each beam of the at least one beam of the second cell. Further, the first system information can further include the common system information of the at least one beam of the second cell.

[0146] Optionally, the beams in the second cell can also be divided into multiple beam groups, and the beams in the same beam group share the beam SI, and the beams in different beam groups can be independently configured. For example, the second cell includes 8 beams, which are divided into two beam groups {beam 1-4} and {beam 5-8}, and the respective system information is SI-group 1 and SI-group 2, the former is the beam SI shared by beams 1-4, and the latter is the beam SI shared by beams 5-8, and SI-group 1 and SI-group 2 are independently configured.

[0147] S202. The UE initiates random access to the second cell based on the first system information.

[0148] After the UE receives the first system information, the UE can acquire system information of multiple cells. For example, the UE can acquire common system information of at least two cells of the multiple cells. In addition, the UE can determine system information of a second cell based on at least one of the common system information of the at least two cells and the first parameter, or acquire the system information of the second cell in the first system information. In addition, the UE can determine system information of at least one beam of the second cell based on at least one of the common system information of the at least two cells, the system information of the second cell, and the beam parameter, or acquire the system information of the at least one beam of the second cell in the first system information. The second cell is one of the multiple cells.

[0149] After the UE acquires the system information, the UE determines to initiate random access to the second cell.

[0150] The access refers to that, in an idle state, the UE is generally triggered by service, so that the UE needs to initiate a random access process to change from the idle state to the connected state, and then perform service transmission.

[0151] Exemplarily, the random access of the embodiment can be two-step random access (2-step RACH), or four-step random access (4-step RACH).

[0152] The system information includes random access configuration information, such as RACH resource configuration and preamble configuration. When the UE initiates random access, the UE can send random access information, including a RACH preamble and / or a RACH information packet. The RACH information packet can be sent together with the RACH preamble, or the RACH preamble can be sent first, and then the RACH information packet is sent after receiving a response from the network device. The RACH information packet includes identification information of the UE.

[0153] According to the communication method provided in the embodiment of the present application, the network device sends first system information to the terminal device on the first cell, the first system information includes system information of multiple cells, and the terminal device initiates random access to one of the multiple cells based on the first system information. In this way, the multiple cells do not need to send their own system information respectively, the network device can efficiently send system information, and the power consumption of the network device is reduced. In addition, the terminal device can initiate random access to any one of the multiple cells based on the first system information, and the coordination of cell resources is realized.

[0154] In an example communication scenario, the first cell in the above embodiment can be a first camped cell currently camped by the UE, and the multiple cells include at least one second camped cell and / or at least one non-camped cell which are not currently camped by the UE. The at least one second camped cell which is not currently camped by the UE can also be referred to as at least one campable cell of the UE.

[0155] It can be understood that the cell in which the UE of the embodiment currently resides can be replaced by an anchor cell; the cell in which the UE can reside can be replaced by a neighboring anchor cell; and the non-resident cell can be replaced by a non-anchor cell.

[0156] As shown in FIG. 3, it is a schematic diagram of the relationship between different types of cells and system information according to the embodiment of the application. Cell 1 is the cell in which the UE currently resides (i.e., the first resident cell), and cell 3 is the cell in which the UE can reside (i.e., the second resident cell) (cell 1 and cell 3 can also be considered as the anchor and neighboring anchor cells, respectively). In addition, cell 1 and cell 3 can have their own independent non-resident cells (or non-anchor cells): the non-resident cells corresponding to cell 1 include cell 1-1 and cell 1-2; and the non-resident cells corresponding to cell 3 include cell 2-1 and cell 2-2. Each non-resident cell of cell 1 can include at least one beam, for example, non-resident cell 1-1 includes beam 1-1-1 and beam 1-1-2; and non-resident cell 1-2 includes beam 1-2-1 and beam 1-2-2. Each non-resident cell of cell 3 can include at least one beam, for example, non-resident cell 2-1 includes beam 2-1-1 and beam 2-1-2; and non-resident cell 2-2 includes beam 2-2-1 and beam 2-2-2.

[0157] The first resident cell (also referred to as the anchor cell) is responsible for current cell residence, i.e., monitoring paging, and carrying all or part of the system information of at least one second resident cell and / or non-resident cell.

[0158] The non-resident cell (also referred to as the non-anchor cell) does not need to perform cell reselection and / or residence, and can be directly accessed by the UE in the case where the UE resides in the first resident cell. Thus, if the second cell is one of the at least one non-resident cell, the UE initiates random access to the second cell based on the first system information before performing step S202.

[0159] The second resident cell (also referred to as the resident cell or the neighboring anchor cell) needs to perform cell reselection before it can be resident and accessed. Thus, if the second cell is one of the at least one second resident cell, the UE performs cell reselection to reside on the second cell before performing step S202.

[0160] The UE receives first system information from a first camped cell, the first system information including system information of a plurality of cells. The plurality of cells includes at least one second camped cell and / or at least one non-camped cell, i.e., the first system information includes system information of the first camped cell and can also include system information of at least one second camped cell and / or at least one non-camped cell.

[0161] As shown in FIG. 4, it is a schematic diagram of a transmission architecture of first system information according to an embodiment of the present application. In this communication scenario, the UE receives first system information from a first camped cell (i.e., the first cell described above), and the first system information includes: minimum system information (MSI) of the first camped cell and on-demand system information (OSI) (here identified as OSI-1) of the first camped cell. The OSI of the first camped cell further includes at least one of: MSI of at least one second camped cell, OSI (here identified as OSI-2) of at least one second camped cell, MSI of at least one non-camped cell, and OSI of at least one non-camped cell. The MSI includes a synchronization signal block (SSB) and remaining minimum system information (RMSI). The SSB includes a synchronization signal (SS) and a main information block (MIB). Since the first system information described above can include system information of at least one non-camped cell, the transmission of system information of the non-camped cell can be greatly reduced, and the UE can access the cell through the non-camped cell at any time although it is currently camped in the first camped cell, thereby realizing on-demand wake-up and sleep of the non-camped cell and improving system energy efficiency.

[0162] For the multiple second residing cells, the multiple second residing cells have common system information. For example, the multiple cells are distributed on two frequency points (frequency point 1 and frequency point 2), and the frequency point 1 and the frequency point 2 each have multiple second residing cells. The second residing cells on the same frequency point can have common system information, and the system information on the second residing cells of different frequency points is independently configured. In addition, the UE can also determine the specific system information of each second residing cell in the multiple second residing cells based on the common system information of the multiple second residing cells and the first parameter. The meaning of the first parameter can be referred to the above. Alternatively, the specific system information of each second residing cell in the multiple second residing cells can also be carried in the first system information. Further, the UE can also determine the system information of at least one beam of the second residing cell based on at least one of the common system information of the multiple second residing cells, the specific system information of any second residing cell, and the beam parameter. Since the first system information includes the system information of the multiple second residing cells, after the UE performs cell reselection, it is not necessary to temporarily read the system information of the second residing cell, thereby increasing the smooth mobility of cell reselection.

[0163] For the multiple non-residing cells, the multiple non-residing cells have common system information. For example, the multiple cells are distributed on two frequency points (frequency point 1 and frequency point 2), and the frequency point 1 and the frequency point 2 each have multiple non-residing cells. The non-residing cells on the same frequency point can have common system information, and the system information on the non-residing cells of different frequency points is independently configured. In addition, the UE can also determine the specific system information of each non-residing cell in the multiple non-residing cells based on the common system information of the multiple non-residing cells and the first parameter. The meaning of the first parameter can be referred to the above. Alternatively, the specific system information of each non-residing cell in the multiple non-residing cells can also be carried in the first system information. Further, the UE can also determine the system information of at least one beam of the non-residing cell based on at least one of the common system information of the multiple non-residing cells, the specific system information of any non-residing cell, and the beam parameter.

[0164] The beam 1-1-1 and the beam 1-1-2 of the non-residing cell 1-1 of the cell 1 can have common system information. The corresponding common system information of the non-residing cell 1-1 can include the common system information of the beam 1-2-1 and the beam 1-2-2 of the non-residing cell 1-2; or the corresponding specific system information of the non-residing cell 1-1 can include the common system information of the beam 1-2-1 and the beam 1-2-2 of the non-residing cell 1-2. The UE can also determine the specific system information of the beam 1-1-1 and the beam 1-1-2 of the non-residing cell 1-1 respectively according to the description in the above. The case of other non-residing cells is similar.

[0165] There are several ways for the transmission of the system information of the first camped cell, the system information of the at least one second camped cell, and the system information of the at least one non-camped cell.

[0166] In one way, the network device can broadcast the system information of the first camped cell itself, and the UE can periodically monitor the scheduling information of the system information of the first camped cell; the system information of the at least one second camped cell and the system information of the at least one non-camped cell are triggered on demand, i.e., the network device can broadcast the system information or can be triggered by the UE to send the system information on demand.

[0167] In another way, the network device can broadcast the system information of the first camped cell itself and the system information of the at least one second camped cell, and the UE can periodically monitor the scheduling information of the system information of the first camped cell and the at least one second camped cell; the system information of the at least one non-camped cell is triggered on demand, i.e., the network device can broadcast the system information or can be triggered by the UE to send the system information on demand.

[0168] For example, to reduce the transmission overhead of the system information of the above multiple cells, the at least one second camped cell can be on the same frequency as the first camped cell, and the at least one non-camped cell can be on a different frequency from the first camped cell. Alternatively, the requirement for the at least one non-camped cell can be relaxed, and the at least one non-camped cell can be on the same frequency or a different frequency from the first camped cell.

[0169] In addition, the network device can update the system information of the first camped cell, the system information of the at least one second camped cell, and the system information of the at least one non-camped cell. The network device can respectively send an update indication (for example, by carrying the update indication through paging downlink control information (DCI), a downlink wake-up signal, etc.) to update the system information. In one example, the system information of the first camped cell can be updated through update indication information 1, and the system information of the at least one second camped cell and the system information of the at least one non-camped cell can be updated through update indication information 2. In another example, the system information of the first camped cell and the system information of the at least one non-camped cell can be updated through update indication information 1, and the system information of the at least one second camped cell can be updated through update indication information 2. In yet another example, the system information of the first camped cell and the system information of the at least one second camped cell can be updated through update indication information 1, and the system information of the at least one non-camped cell can be updated through update indication information 2. In yet another example, the system information of the first camped cell can be updated through update indication information 1, the system information of the at least one second camped cell can be updated through update indication information 2, and the system information of the at least one non-camped cell can be updated through update indication information 3.

[0170] The above embodiments describe that the first system information can include system information of multiple cells, thereby saving power consumption of the base station, and also achieving on-demand wake-up and sleep of the non-camped cell to improve system energy efficiency, or increasing smooth mobility of reselection of the campable cell. How to determine the second cell (i.e., the target cell) is further described through embodiments as follows:

[0171] As shown in FIG. 5, a flowchart of another communication method provided by an embodiment of the present application is shown. Exemplarily, the method can include the following steps:

[0172] S501. The network device sends first system information to the UE on a first cell.

[0173] Correspondingly, the UE receives the first system information.

[0174] The first system information includes system information of multiple cells. The multiple cells include the first cell.

[0175] The specific implementation of this step can refer to step S201 of the embodiment shown in FIG. 2, which will not be described here.

[0176] S502. The UE determines a second cell based on a second parameter.

[0177] The second parameter includes at least one of the following: service information, state of the cell, and state of the UE. The service information is used to indicate the service to be performed by the UE; the state of the cell is used to indicate the current state of each of the plurality of cells (including the dormant state and the active state); and the state of the UE is used to indicate the current state of the UE (including the moving speed of the UE, the location of the UE, etc.). The UE can determine the second cell based on at least one of the above parameters.

[0178] Further, the network device can also indicate the association between the second cell and the second parameter through the first system information. Thus, the UE can determine the second cell based on the second parameter and the association between the second cell and the second parameter.

[0179] The following will be described respectively:

[0180] In one implementation, the UE determines the second cell based on the service information.

[0181] Exemplarily, the service information can be a service identifier. The service identifier can be used to identify a type of service. The network device can inform the correspondence between the service and the service identifier through system information or the like, or the correspondence between the service and the service identifier can be predefined by a protocol. The type of service can be defined according to at least one of the following dimensions: service data volume, data rate, packet size, latency requirement, etc., or can be defined according to the following dimensions: audio, video, telephone, etc., or a combination of the above dimensions.

[0182] The network device can indicate the association between the second cell and the service information through the first system information. The association can be one-to-one, many-to-one, or one-to-many. One-to-one means that the service is suitable for being performed in the second cell; many-to-one means that the service is suitable for being performed in a plurality of cells including the second cell; and one-to-many means that a plurality of services are suitable for being performed in the second cell.

[0183] Alternatively, the network device can also inform the service information supported by the second cell through the first system information, which also implies that the second cell is associated with the service information supported by the second cell.

[0184] For example, for the scenario of uplink triggered service, i.e., the service triggered by the UE, the UE can determine the second cell based on the service information of the currently triggered uplink service and the above association.

[0185] As shown in FIG. 6, it is a schematic diagram of association between service information and candidate cells in an embodiment of the present application. The UE can determine to perform transmission of service 1 in cell 1 (first camped cell) based on service information of service 1 triggered by current uplink and the association between service information of service 1 and candidate cells; or, cell 2 is co-frequency with cell 1 and both are located at f1 frequency point, and cell 2 is a campable cell. The UE can determine to perform cell reselection to camp in cell 2 (second camped cell) based on service information of service 1 triggered by current uplink and the association between service information of service 1 and candidate cells, and perform transmission of service 1 in cell 2; or, cell 2 is a non-camped cell. The UE can access to cell 2 to perform service 1 based on service information of service 1 triggered by current uplink and the association between service information of service 1 and candidate cells; cell 3 is a non-camped cell, cell 3 is different frequency from cell 1 and cell 2, and cell 3 is located at f2 frequency point. The UE can access to cell 3 (non-camped cell) to perform transmission of service 2 based on service information of service 2 triggered by current uplink and the association between service information of service 2 and candidate cells.

[0186] For example, for the scenario of downlink triggered service, i.e., service triggered by a network device, the UE can receive paging information from a first cell, the paging information being used to indicate service information (as shown in FIG. 6, the paging information is used to indicate service information of downlink triggered service). The paging information includes at least one of the following: a paging message, scheduling information (e.g., paging DCI) of the paging message, a paging advance indication message, scheduling information (e.g., paging advance indication DCI) of the paging advance indication message, a wake-up signal, scheduling information of the wake-up signal, a low-power wake-up signal (e.g., signaling used to wake up a low-power receiver or a receiving waveform (e.g., an on-off keying (OOK) waveform)), and scheduling information of the low-power wake-up signal.

[0187] The UE can determine a second cell based on service information indicated by the paging information and the above association. For example, service identifiers 00 / 01 / 10 / 11 represent service types associated with candidate cells 1 / 2 / 3 / 4 respectively, and the identifier of the current DL triggered service in the paging information is 01. Then, the UE can determine the second cell based on the service identifier in the paging information and the above association.

[0188] Still referring to FIG. 6, the UE can determine to perform transmission of service 1 in cell 1 (first camped cell) based on the service information of service 1 triggered by the current downlink and the association between the service information of service 1 and the candidate cells; or, cell 2 is co-frequency with cell 1 and both are located at f1 frequency point, and cell 2 is a campable cell, the UE can determine to perform cell reselection to camp in cell 2 (second camped cell) based on the service information of service 1 triggered by the current downlink and the association between the service information of service 1 and the candidate cells, and perform transmission of service 1 in cell 2; or, cell 2 is a non-camped cell, the UE can access to cell 2 to perform service 1 based on the service information of service 1 triggered by the current downlink and the association between the service information of service 1 and the candidate cells; cell 3 is a non-camped cell, cell 3 is different frequency from cell 1 and cell 2, and cell 3 is located at f2 frequency point, the UE can access to cell 3 (non-camped cell) to perform transmission of service 2 based on the service information of service 2 triggered by the current downlink and the association between the service information of service 2 and the candidate cells.

[0189] In another implementation, the UE determines the second cell based on a state of the cell and / or a state of the UE.

[0190] The state of the cell includes a dormant state and an active state. In the case that the cell is in the dormant state, it means that the cell temporarily does not receive access of the UE; in the case that the cell is in the active state, it means that the cell can receive access of the UE. Further, the state of the cell can be further divided into several grades, such as high, medium and low grades, and the higher the grade, the higher the access priority; the lower the grade, the lower the access priority.

[0191] In addition, the state of the cell can also include the cell signal quality measured by the UE, such as RSRP, RSRQ, etc.

[0192] The network device can indicate the state of each of the plurality of cells through paging information.

[0193] The state of the UE includes the moving speed of the UE, the location of the UE, and the like. These states of the UE can have certain association with the candidate cells. For example, some candidate cells have large coverage range and accept access of the UE with high moving speed; some candidate cells have small coverage range and do not accept access of the UE with high moving speed. For another example, some candidate cells accept access of the UE within a certain range; some candidate cells do not accept access of the UE within a certain range.

[0194] It can be seen that the state of the cell and / or the state of the UE have association with the candidate cells.

[0195] The UE can determine the second cell based on the state of the second cell and / or the state of the UE, and the association between the state of the cell and / or the state of the UE and the candidate cell. For example, if the second cell is in the on state, the UE can determine the second cell as the target cell. For another example, if the UE has a high moving speed and the second cell can accept the UE with high moving speed to access, the UE can determine the second cell as the target cell. For another example, if the second cell is in the on state and the second cell accepts the UE within a certain range to access, and the UE is within the certain range of the second cell, the UE can determine the second cell as the target cell.

[0196] It can be understood that the above implementation of the UE determining the second cell can be implemented independently or in combination. Taking the UL service trigger as an example, the UE can determine the target cell based on the state of each of the plurality of cells and / or the state of the UE. For example, there are three candidate cells, two of which are in the dormant state, and then one of the other two is selected as the target cell. For another example, there are three candidate cells, one of which is in the dormant state, and then the other two candidate cells that match the UE position or moving speed are selected as the target cell. Or, the target cell is selected as the target cell with the best signal quality from the two cells. Or, one of the two cells is randomly selected as the target cell.

[0197] The plurality of cells can be located on at least one frequency point. Further, before the UE determines the second cell based on the second parameter, the UE can also determine a first frequency point (or referred to as a target frequency point) based on the second parameter, wherein the second cell is located on the first frequency point. For example, there is a certain association between the first frequency point and the second parameter. The UE can determine the first frequency point based on the second parameter and the association between the first frequency point and the second parameter. For details, refer to the above determination of the second cell.

[0198] S503. The UE initiates random access to the second cell based on the first system information.

[0199] The second cell is one of the plurality of cells.

[0200] For details, refer to the step S202 of the embodiment shown in FIG. 2, which will not be repeated here.

[0201] According to the communication method provided in the embodiments of the present application, the network device sends the first system information to the terminal device on the first cell, the first system information comprises system information of multiple cells, and the terminal device initiates random access to one of the multiple cells based on the first system information, so that the multiple cells do not need to send their own system information respectively, the system information can be efficiently sent, and the power consumption of the network device is reduced; and the terminal device can initiate random access to any one of the multiple cells based on the first system information, so that the coordination of cell resources is realized; and the UE can determine the second cell based on the second parameter, so that the UE can accurately determine the second cell with small overhead.

[0202] As shown in FIG. 7, it is a flow diagram of another communication method provided in the embodiments of the present application. Exemplarily, the method can comprise the following steps:

[0203] S701. The network device sends the first system information to the UE on the first cell.

[0204] Correspondingly, the UE receives the first system information.

[0205] The first system information comprises system information of multiple cells. The multiple cells comprise the first cell.

[0206] The specific implementation of this step can refer to step S201 of the embodiment shown in FIG. 2, which will not be described here.

[0207] S702. The network device sends the paging information to the UE on the first cell.

[0208] Correspondingly, the UE receives the paging information from the first cell.

[0209] The paging information is used to indicate the second cell.

[0210] For example, the network device can indicate the second cell as the current target cell on the first cell. Assuming that there are four candidate cells: candidate cells 1 / 2 / 3 / 4, the paging information can comprise 2-bit indication information, and the values of the 2 bits are 00 / 01 / 10 / 11, which are respectively used to indicate the above candidate cells 1 / 2 / 3 / 4.

[0211] The multiple cells can be located on at least one frequency point. Further, the paging information can also be used to indicate the first frequency point. For example, the multiple candidate cells are distributed on two frequency points (frequency point 1 and frequency point 2), and 1-bit indication information can be included in the paging information, and the values 0 / 1 of the 1-bit are respectively used to indicate the frequency points 1 / 2. Alternatively, the UE can determine the first frequency point based on the second parameter, and specific implementation can be referred to the description above. After the UE determines the first frequency point, the UE determines the second cell based on the indication of the paging information. The second cell is located on the first frequency point. Alternatively, after the UE determines the first frequency point, the UE can determine the second cell on the first frequency point by itself, or determine the second cell according to the signal quality (such as RSRP or RSRQ) of the cell.

[0212] The paging information includes at least one of the following: a paging message, scheduling information (such as paging DCI) of the paging message, a paging early indication message, scheduling information (such as paging early indication DCI) of the paging early indication message, a wake-up signal, scheduling information of the wake-up signal, a low-power wake-up signal (such as signaling for downlink wake-up low-power receivers or receiving waveforms (such as on-off keying (OOK) waveforms)), and scheduling information of the low-power wake-up signal.

[0213] S703. The UE initiates random access to the second cell based on the first system information.

[0214] The second cell is one of the multiple cells.

[0215] Specific implementation of this step can be referred to step S202 of the embodiment shown in FIG. 2, which will not be described here.

[0216] According to the communication method provided in the embodiments of the present application, the network device sends the first system information to the terminal device on the first cell, the first system information includes system information of multiple cells, and the terminal device initiates random access to one of the multiple cells based on the first system information. In this way, the multiple cells do not need to send their own system information respectively, the system information can be efficiently sent, and the power consumption of the network device is reduced. Further, the terminal device can initiate random access to any one of the multiple cells based on the first system information, and the coordination of cell resources is realized. Further, the network device indicates the second cell through the paging information, and the target cell of random access can be explicitly indicated.

[0217] It can be understood that the methods and / or steps implemented by the network device in the above embodiments can also be implemented by components (such as chips or circuits) that can be used for the network device, and the methods and / or steps implemented by the UE can also be implemented by components (such as chips or circuits) that can be used for the UE.

[0218] The above describes the scheme provided by the embodiments of the present application mainly from the perspective of interaction between network elements. Correspondingly, the embodiments of the present application further provide a communication apparatus for implementing the above methods. The communication apparatus can be the network device in the above method embodiments, or a component applicable to the network device; or the communication apparatus can be the UE in the above method embodiments, or a component applicable to the UE. It can be understood that the communication apparatus contains the hardware structure and / or software module corresponding to each function in order to implement the above functions. Those skilled in the art should easily realize that, in combination with the units and algorithm steps of the examples described in the embodiments disclosed herein, the present application can be realized in the form of hardware or a combination of hardware and computer software. Whether a certain function is realized in the form of hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the present application.

[0219] The embodiments of the present application can divide the functions of the communication apparatus according to the above method embodiments, for example, divide each function module corresponding to each function, or integrate two or more functions in one processing unit. The above integrated module can be realized in the form of hardware or software function module. It should be noted that the division of the modules in the embodiments of the present application is illustrative, and is only a logical function division. Actual implementation can have another division manner.

[0220] Based on the same concept of the above communication method, the present application further provides a communication apparatus as follows:

[0221] As shown in FIG. 8, it is a structure schematic diagram of a communication apparatus provided by the embodiments of the present application. The communication apparatus 800 includes a transceiver unit 801 and a processing unit 802. Wherein:

[0222] Exemplarily, the above transceiver unit 801 can include a receiving unit and a sending unit, which can be an integral whole or independent units.

[0223] When the communication apparatus 800 is used to implement the functions of the UE, the transceiver unit 801 is configured to perform one or more operations of the UE in steps S201 and S202 of the embodiment shown in FIG. 2; or the transceiver unit 801 is configured to perform one or more operations of the UE in steps S501 and S503 of the embodiment shown in FIG. 5, and the processing unit 802 is configured to perform step S502 of the embodiment shown in FIG. 5; or the transceiver unit 801 is configured to perform one or more operations of the UE in steps S701-S703 of the embodiment shown in FIG. 7.

[0224] The transceiver unit 801 is configured to perform one or more operations of the network device in steps S201 and S202 of the embodiment shown in FIG. 2; or the transceiver unit 801 is configured to perform one or more operations of the network device in steps S501 and S503 of the embodiment shown in FIG. 5; or the transceiver unit 801 is configured to perform one or more operations of the network device in steps S701 to S703 of the embodiment shown in FIG. 7, when the communication device 800 is used to implement the function of the network device.

[0225] The specific implementation of the transceiver unit 801 and the processing unit 802 can refer to the related description in the embodiments shown in FIG. 2, FIG. 5 or FIG. 7.

[0226] The division of the modules in the present application is illustrative, and is only a logical function division. In actual implementation, another division manner can be used. In addition, each function module in each example of the present application can be integrated in one processor, or can be physically separated, or two or more modules can be integrated in one module. The integrated module can be realized in the form of hardware or in the form of a software function module.

[0227] As shown in FIG. 9, FIG. 9 is a structural schematic diagram of another communication device provided by the embodiments of the present application. The communication device 900 includes a processor 901. Optionally, the communication device 900 can further include an interface circuit 902 (indicated by a dashed line in the figure), and the processor 901 and the interface circuit 902 are coupled to each other. It can be understood that the interface circuit 902 can be a transceiver or an input / output interface. Optionally, the communication device 900 can further include a memory 903 (indicated by a dashed line in the figure), and the memory 903 is used to store instructions executed by the processor 901, or to store input data required by the processor 901 to run instructions, or to store data generated after the processor 901 runs instructions.

[0228] The interface circuit 902 is configured to perform one or more operations of the UE in steps S201 and S202 of the embodiment shown in FIG. 2; or the interface circuit 902 is configured to perform one or more operations of the UE in steps S501 and S503 of the embodiment shown in FIG. 5, and the processor 901 is configured to perform step S502 of the embodiment shown in FIG. 5; or the interface circuit 902 is configured to perform one or more operations of the UE in steps S701 to S703 of the embodiment shown in FIG. 7, when the communication device 900 is used to implement the function of the UE.

[0229] When the communication apparatus 900 is used to implement the function of the network device, the interface circuit 902 is configured to perform one or more operations of the network device in steps S201 and S202 of the embodiment shown in FIG. 2; or the interface circuit 902 is configured to perform one or more operations of the network device in steps S501 and S503 of the embodiment shown in FIG. 5; or the interface circuit 902 is configured to perform one or more operations of the network device in steps S701 to S703 of the embodiment shown in FIG. 7.

[0230] The specific implementation of the processor 901, the interface circuit 902 and the memory 903 can refer to the related description in the embodiments shown in FIG. 2, FIG. 5 or FIG. 7.

[0231] When the communication apparatus is a chip applied to the network device, the chip implements the function of the network device in the method embodiments. The chip receives information from other modules (such as a radio frequency module or an antenna) in the network device, and the information is sent by the UE to the network device; or the chip sends information to other modules (such as a radio frequency module or an antenna) in the network device, and the information is sent by the network device to the UE.

[0232] When the communication apparatus is a chip applied to the UE, the chip implements the function of the UE in the method embodiments. The chip receives information from other modules (such as a radio frequency module or an antenna) in the UE, and the information is sent by the network device to the UE; or the chip sends information to other modules (such as a radio frequency module or an antenna) in the UE, and the information is sent by the UE to the network device.

[0233] In addition, it should be noted that the aforementioned transceiver unit and / or processing unit can be implemented by a virtual module, for example, the processing unit can be implemented by a software function unit or a virtual device, and the transceiver unit can be implemented by a software function or a virtual device. Alternatively, the processing unit or the transceiver unit can also be implemented by an entity device, for example, if the device is implemented by a chip / chip circuit, the transceiver unit can be an input / output circuit and / or a communication interface, which performs an input operation (corresponding to the aforementioned receiving operation) and an output operation (corresponding to the aforementioned sending operation); and the processing unit is an integrated processor or a microprocessor or an integrated circuit.

[0234] It can be understood that the processor in the embodiments of the present application can be a central processing unit (CPU), and can also be other general-purpose processors, digital signal processors (DSP), application specific integrated circuits (ASIC), field programmable gate arrays (FPGA) or other programmable logic devices, transistor logic devices, hardware components or any combination thereof. The general-purpose processor can be a microprocessor or any conventional processor.

[0235] The embodiments of the present application further provide a computer readable storage medium, which stores computer programs or instructions, and when the computer programs or instructions are executed, the method in the above embodiments is implemented.

[0236] The embodiments of the present application further provide a computer program product containing instructions, which, when executed on a computer, cause the computer to perform the method in the above embodiments.

[0237] The embodiments of the present application further provide a communication system, which comprises the communication device.

[0238] The embodiments of the present application further provide a circuit, which is coupled with a memory, and is used for executing the method shown in the above embodiments. The circuit can include a chip circuit.

[0239] The embodiments of the present application further provide a chip device, which comprises a processor, and is used for calling computer degrees or computer instructions stored in the memory, so that the processor executes the method provided in any one of the above method embodiments.

[0240] In a possible implementation manner, the input of the chip device corresponds to the receiving operation in any one of the above method embodiments, and the output of the chip device corresponds to the sending operation in any one of the above method embodiments.

[0241] Optionally, the processor is coupled with the memory through an interface.

[0242] Optionally, the chip device further comprises a memory, and the memory stores computer degrees or computer instructions.

[0243] When the communication device is a module applied to a network device, the network device module implements the functions of the network device in the method embodiments. The network device module receives information from other modules (such as a radio frequency module or an antenna) in the network device, and the information is sent by the UE to the network device; or the network device module sends information to other modules (such as a radio frequency module or an antenna) in the network device, and the information is sent by the network device to the UE. The network device module herein can be a baseband chip of the network device, or a CU, a DU or other modules, or a device under the O-RAN architecture, such as an open CU, an open DU, etc.

[0244] It should be noted that one or more of the above units or units can be realized by software, hardware or a combination of both. When any of the above units or units is realized by software, the software exists in the form of computer program instructions and is stored in the memory, and the processor can be used to execute the program instructions and realize the above method flow.

[0245] In this application, the processor can be a general processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component, which can realize or execute the methods, steps and logic block diagrams disclosed in this application. The general processor can be a microprocessor or any conventional processor. The steps of the method disclosed in this application can be directly embodied as hardware processor execution or executed by a combination of hardware and software modules in the processor.

[0246] When the above units or units are realized by hardware, the hardware can be any one or any combination of CPU, microprocessor, digital signal processing (digital signal processing, DSP) chip, microcontroller unit (microcontroller unit, MCU), artificial intelligence processor, ASIC, SoC, FPGA, programmable logic device (programmable logic device, PLD), special digital circuit, hardware accelerator or non-integrated discrete device, which can run necessary software or not dependent on software to execute the above method flow.

[0247] Optionally, the embodiments of the present application also provide a chip system, comprising: at least one processor and an interface, the at least one processor is coupled with the memory through the interface, when the at least one processor runs the computer program or instructions in the memory, so that the chip system executes the method in any of the above method embodiments. Optionally, the chip system can be composed of a chip, or can contain a chip and other discrete devices, and the embodiments of the present application do not make specific limitation to this.

[0248] The memory in the present application can also be a circuit or any other device capable of realizing a storage function, used for storing program instructions and / or data. The memory can be 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. For example, the memory can be a non-volatile memory such as a digital versatile disc (DVD), a hard disk drive (HDD), or a solid-state drive (SSD), etc., and can also be a volatile memory such as a random-access memory (RAM).

[0249] It can be understood that in the present application, "indication" can include direct indication, indirect indication, display indication, and implicit indication. When it is described that certain indication information is used to indicate A, it can be understood that the indication information carries A, directly indicates A, or indirectly indicates A. In the present application, the information indicated by the indication information is referred to as the to-be-indicated information. In the specific implementation process, there are many ways to indicate the to-be-indicated information, for example but not limited to, the to-be-indicated information can be directly indicated, such as the to-be-indicated information itself or an index of the to-be-indicated information, or the to-be-indicated information can be indirectly indicated by indicating other information, where the other information and the to-be-indicated information have an association relationship. The to-be-indicated information can also be indicated only in part, and the other part of the to-be-indicated information is known or agreed in advance. For example, the indication of a specific information can also be realized by means of the arrangement order of each information agreed in advance (for example, a protocol stipulates), thereby reducing the indication overhead to a certain extent. The to-be-indicated information can be sent as a whole, or can be sent separately into multiple sub-information, and the sending period and / or sending occasion of the sub-information can be the same or different. The specific sending method is not limited in the present application. The sending period and / or sending occasion of the sub-information can be pre-defined, for example, pre-defined according to a protocol, or can be configured by the transmitting end device by sending configuration information to the receiving end device.

[0250] At least one of the terms, indicates one or more. More than two, refers to two or more. "And / or", describes the relationship between the associated objects, which means that there can be three relationships, for example, A and / or B, which can represent the existence of A alone, the existence of A and B at the same time, and the existence of B alone. The character " / " generally represents the relationship between the front and rear associated objects as "or". In addition, it should be understood that although the terms first, second, etc. may be used to describe various objects in the present application, these objects should not be limited by these terms. These terms are only used to distinguish each object from each other.

[0251] The terms "comprising" and "having" and any variations thereof mentioned above are intended to cover a non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units, is not limited to the listed steps or units, but can optionally include other steps or units not listed, or can optionally include other steps or units inherent to the process, method, product or device. It should be noted that in the present application, the words "exemplary" or "for example" are used to mean serving as an example, illustration, or description. Any method or design scheme described as "exemplary" or "for example" in the present application should not be interpreted as more preferred or more advantageous than other methods or design schemes. Rather, the use of "exemplary" or "for example" is intended to present the relevant concept in a specific manner.

[0252] A network element in a communication system can send a signal to another network element or receive a signal from another network element. Wherein the signal can include information, signaling or data, etc. Wherein, the network element can also be replaced by entity, network entity, device, UE, communication module, node, communication node, etc. In the present application, the network element is taken as an example for description. For example, the communication system can include at least one UE and at least one network device. The network device can send a downlink signal to the UE, and / or the UE can send an uplink signal to the network device. In addition, it can be understood that if the communication system includes multiple UEs, the multiple UEs can also send signals to each other, that is, the sending network element and the receiving network element of the signal can be UEs.

[0253] In the above embodiments, all or part can be implemented by software, hardware, firmware or any combination thereof. When implemented by software, all or part can be implemented in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of the present application are generated. 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 wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.) mode.

[0254] Although the present application is described herein in conjunction with various embodiments, other variations and modifications of the disclosed embodiments can be understood and implemented by those skilled in the art through viewing the drawings, the disclosure, and the appended claims. In the claims, the word "comprising" does not exclude other components or steps, and "a" or "one" does not exclude a plurality. A single processor or other unit can implement several functions listed in the claims. Some measures described in mutually different dependent claims can be combined and produce a good result.

[0255] It can be understood that various numerical numbers involved in the embodiments of the present application are only for convenient differentiation and do not limit the scope of the embodiments of the present application. The size of the serial number of the above processes does not mean the order of execution, and the execution order of the processes should be determined by its function and inherent logic.

[0256] In the above embodiments, the description of each embodiment has its own focus, and the parts not described in detail in a certain embodiment can refer to the relevant description of other embodiments.

[0257] The components in the device of the embodiments of the present application can be combined, divided and deleted according to actual needs. Those skilled in the art can combine or combine the features of different embodiments and different embodiments described in the specification.

[0258] In this application, under the premise of no logical contradiction, examples can be referred to each other, for example, methods and / or terms between method embodiments can be referred to each other, for example, functions and / or terms between device embodiments can be referred to each other, and for example, functions and / or terms between device examples and method examples can be referred to each other.

Claims

1. A communication method characterized by comprising: The method comprises: receiving first system information from a first cell, the first system information comprising system information of a plurality of cells, the plurality of cells comprising the first cell; initiating random access to a second cell based on the first system information, the second cell being one of the plurality of cells.

2. The method of claim 1, wherein, The first system information comprises common system information of at least two cells of the plurality of cells.

3. The method of claim 2, wherein, The at least two cells are located at a same frequency point; and / or the at least two cells belong to a first cell list.

4. The method of claim 2 or 3, wherein, The second cell is one of the at least two cells; The method further comprises: determining system information of the second cell based on the common system information of the at least two cells, a first parameter, the first parameter comprising a cell-specific parameter and / or a frequency point-specific parameter.

5. The method of claim 4, wherein, The cell-specific parameter comprises at least one of: a high-layer cell identity, a physical-layer cell identity. The frequency point-specific parameter comprises at least one of: frequency point information, frequency raster information.

6. The method of any one of claims 2-5, wherein, The method further comprises: determining system information of at least one beam of the second cell based on at least one of: the common system information of the at least two cells, the system information of the second cell, the first parameter, a beam parameter, the first parameter comprising a cell-specific parameter and / or a frequency point-specific parameter.

7. The method of any one of claims 1-3, wherein, The first system information further comprises the system information of the second cell.

8. The method of any one of claims 1-3, 7, wherein, The first system information further comprises the system information of at least one beam of the second cell.

9. The method of any one of claims 1-8, wherein, The first system information further comprises common system information of at least one beam of the second cell.

10. The method of any one of claims 1-9, wherein, The first cell is a first camped cell in which a terminal device currently camps, the plurality of cells comprising at least one second camped cell and / or at least one non-camped cell in which the terminal device currently does not camp.

11. The method of claim 10, wherein, The second cell is one of the at least one second camped cell; Before the initiating random access to the second cell based on the first system information, the method further comprises: performing cell reselection to camp on the second cell.

12. The method of claim 10, wherein, The second cell is one of the at least one non-camped cell; The initiating random access to the second cell based on the first system information comprises: initiating random access to the second cell based on the first system information while camping on the first cell.

13. The method of any one of claims 10-12, wherein, The first system information comprises at least one of: minimum system information of the at least one second camped cell, on-demand system information of the at least one second camped cell, minimum system information of the at least one non-camped cell, on-demand system information of the at least one non-camped cell.

14. The method of any one of claims 10-13, wherein, The at least one second camped cell has common system information, and / or the at least one non-camped cell has common system information.

15. The method of any one of claims 10-14, wherein, The first system information comprises: on-demand system information and minimum system information of the first cell, the on-demand system information comprising at least one of: on-demand system information of the first cell, on-demand system information of the at least one camped cell, minimum system information of the at least one camped cell, on-demand system information of the at least one non-camped cell, and minimum system information of the at least one non-camped cell.

16. The method of any one of claims 1-15, wherein, Before initiating random access to a second cell based on the first system information, the method further comprises: determining the second cell based on a second parameter; or determining a first frequency point based on a second parameter, the second cell being located at the first frequency point; wherein the second parameter comprises at least one of: service information, a state of a cell, and a state of a terminal.

17. The method of claim 16, wherein, The first system information is further used to indicate an association relationship between the second cell and the second parameter. The determining the second cell based on the second parameter comprises: determining the second cell based on the second parameter and the association relationship between the second cell and the second parameter.

18. The method of claim 16 or 17, wherein, The method further comprises: receiving paging information from the first cell, the paging information being used to indicate at least one of: service information, and a state of a cell; wherein the paging information comprises at least one of: a paging message, scheduling information of the paging message, a paging early indication message, scheduling information of the paging early indication message, a wake-up signal, scheduling information of the wake-up signal, a low-power wake-up signal, and scheduling information of the low-power wake-up signal.

19. The method of any one of claims 1-15, wherein, The method further comprises: receiving paging information from the first cell, the paging information being used to indicate the second cell; or receiving paging information from the first cell, the paging information being used to indicate a first frequency point, the second cell being located at the first frequency point; wherein the paging information comprises at least one of: a paging message, scheduling information of the paging message, a paging early indication message, scheduling information of the paging early indication message, a wake-up signal, scheduling information of the wake-up signal, a low-power wake-up signal, and scheduling information of the low-power wake-up signal.

20. A method of communication, comprising: The method comprises: sending first system information on a first cell, the first system information comprising system information of a plurality of cells, the plurality of cells comprising the first cell.

21. The method of claim 20, wherein, The first system information comprises common system information of at least two cells in the plurality of cells.

22. The method of claim 21, wherein, The at least two cells are located at a same frequency point; and / or the at least two cells belong to a first cell list.

23. The method of any one of claims 20-22, wherein, The first system information further comprises system information of a second cell, the second cell being one of the plurality of cells.

24. The method of any one of claims 20-23, wherein, The first system information further comprises system information of at least one beam of a second cell, the second cell being one of the plurality of cells.

25. The method of any one of claims 20-24, wherein, The first system information further comprises common system information of at least one beam of a second cell, the second cell being one of the plurality of cells.

26. The method of any one of claims 20-25, wherein, The first cell is a first camped cell, and the plurality of cells comprises at least one second camped cell and / or at least one non-camped cell.

27. The method of claim 26, wherein, The first system information comprises at least one of: minimum system information of the at least one second camped cell, on-demand system information of the at least one second camped cell, minimum system information of the at least one non-camped cell, on-demand system information of the at least one non-camped cell.

28. The method of claim 26 or 27, wherein, The at least one second camped cell has common system information, and / or the at least one non-camped cell has common system information.

29. The method of any one of claims 26-28, wherein, The first system information comprises: on-demand system information and minimum system information of the first cell, the on-demand system information comprising at least one of: on-demand system information of the first cell, on-demand system information of the at least one camped cell, minimum system information of the at least one camped cell, on-demand system information of the at least one non-camped cell, minimum system information of the at least one non-camped cell.

30. The method of any one of claims 20-29, wherein, The method further comprises: receiving a random access signal on at least one of the plurality of cells.

31. The method of any one of claims 20-30, wherein, The method further comprises: sending paging information on the first cell, the paging information being used to indicate a second parameter, the second parameter comprising at least one of: service information, a state of a cell; wherein the paging information comprises at least one of: a paging message, scheduling information of the paging message, a paging early indication message, scheduling information of the paging early indication message, a wake-up signal, scheduling information of the wake-up signal, a low-power wake-up signal, scheduling information of the low-power wake-up signal.

32. The method of claim 31, wherein, The first system information further comprises an association relationship between the second parameter and the plurality of cells.

33. The method of any one of claims 20-32, wherein, The method further comprises: sending paging information on the first cell, the paging information being used to indicate the second cell; or sending paging information on the first cell, the paging information being used to indicate a first frequency point, the second cell being located at the first frequency point; wherein the paging information comprises at least one of: a paging message, scheduling information of the paging message, a paging early indication message, scheduling information of the paging early indication message, a wake-up signal, scheduling information of the wake-up signal, a low-power wake-up signal, scheduling information of the low-power wake-up signal.

34. The method of claim 33, wherein, The receiving a random access signal on at least one of the plurality of cells comprises: receiving the random access signal on the second cell.

35. A communications device, characterized by A unit for implementing the method of any one of claims 1-34.

36. A communications device, characterized by A processor, wherein the processor is configured to enable the communication device to implement the method of any one of claims 1-34 when the computer program is executed.

37. A computer-readable storage medium, characterized in that, The storage medium has stored therein a computer program or instructions, which, when executed, cause the method of any one of claims 1-34 to be implemented.

38. A computer program product, characterised in that, The computer program product contains program instructions involved, which, when executed, cause the method of any one of claims 1-34 to be implemented.

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