Communication methods, terminal devices and network devices

Abstract

Provided are communication methods, terminal devices and network devices. A communication method comprises: a terminal device receiving on a first carrier first information sent by a network device, wherein the first information is used for determining one or more second carriers, the second carriers are associated with a cell, and the second carriers are used for camping and / or cell access of the terminal device. A first carrier is not required to be associated with a cell, and therefore it is not necessary to configure a relatively wide range, thereby reducing the complexity of blind detection by a terminal device on the first carrier, and thus reducing the power consumption of the terminal device. Moreover, the terminal device can acquire information of a second carrier in advance by means of first information on the first carrier, and the second carrier is associated with the cell, and therefore the cell for camping and / or access can be found more rapidly, thereby reducing access latency. In addition, a network device can notify the terminal device of the information of the second carrier by means of the first information, and therefore the flexibility of configuring the second carrier by the network device is increased, thereby enabling more efficient deployment. It can be seen that configuring a first carrier and a second carrier that is used for camping and / or cell access, and sending, to a terminal device and by means of the first carrier, first information for determining the second carrier can effectively improve the initial access performance of the terminal device.

Description

Communication methods, terminal equipment and network equipment Technical Field

[0001] This application relates to the field of communication technology, and more specifically, to a communication method, terminal equipment, and network equipment. Background Technology

[0002] Initial access for terminal devices is crucial for ensuring normal communication and access to network resources. Typically, potential cells are deployed across a wide frequency band, causing busy searches during cell discovery and selection, resulting in significant power consumption and increased access latency. Therefore, improving the initial access performance of terminal devices is a problem that needs to be addressed. Summary of the Invention

[0003] This application provides a communication method, a terminal device, and a network device. The various aspects covered by this application are described below.

[0004] In a first aspect, a communication method is provided, comprising: a terminal device receiving first information sent by a network device on a first carrier, the first information being used to determine one or more second carriers, the second carriers being associated with a cell, and the second carriers being used for camping and / or cell access of the terminal device.

[0005] In a second aspect, a communication method is provided, comprising: a network device sending first information to a terminal device on a first carrier, the first information being used to determine one or more second carriers, the second carriers being associated with a cell, and the second carriers being used for camping and / or cell access of the terminal device.

[0006] Thirdly, a terminal device is provided, comprising: a transceiver unit configured to receive first information transmitted by a network device on a first carrier, the first information being used to determine one or more second carriers, the second carriers being associated with a cell, and the second carriers being used for camping and / or cell access of the terminal device.

[0007] Fourthly, a network device is provided, comprising: a device for transmitting first information to a terminal device on a first carrier, the first information being used to determine one or more second carriers, the second carriers being associated with a cell, and the second carriers being used for camping and / or cell access of the terminal device.

[0008] Fifthly, a terminal device is provided, including a transceiver, a memory, and a processor, wherein the memory is used to store a program, and the processor is used to invoke the program in the memory and control the transceiver to receive or send signals so that the terminal device performs the method as described in the first aspect.

[0009] In a sixth aspect, a network device is provided, including a transceiver, a memory, and a processor, wherein the memory is used to store a program, and the processor is used to invoke the program in the memory and control the transceiver to receive or transmit signals so that the network device performs the method as described in the second aspect.

[0010] A seventh aspect provides an apparatus including a processor for calling a program from a memory to cause the apparatus to perform the method as described in any one of the first or second aspects.

[0011] Eighthly, a chip is provided, including a processor for calling a program from memory to cause a device having the chip mounted to perform the method as described in the first or second aspect.

[0012] Ninth aspect, a computer-readable storage medium is provided having a program stored thereon that causes a computer to perform the method as described in the first or second aspect.

[0013] A tenth aspect provides a computer program product, including a program that causes a computer to perform the method as described in the first or second aspect.

[0014] Eleventhly, a computer program is provided that causes a computer to perform the method as described in the first or second aspect.

[0015] In the technical solution provided in this application, the terminal device receives first information sent by the network device on the first carrier and determines the second carrier associated with the cell based on the first information, thereby performing camping and / or cell access on the second carrier. Since the first carrier may not be associated with a cell, a wider setting is unnecessary, reducing the complexity of blind detection on the first carrier for the terminal device and thus reducing its power consumption. Furthermore, since the terminal device can obtain information about the second carrier in advance through the first information on the first carrier, and the second carrier is associated with the cell, it can find the cell for camping and / or access more quickly, reducing access latency. In addition, since the network device can notify the terminal device of the second carrier information through the first information, the flexibility of configuring the second carrier by the network device is increased, enabling more efficient deployment. Therefore, by setting the first carrier and the second carrier for camping and / or cell access, and sending the first information for determining the second carrier to the terminal device through the first carrier, the initial access performance of the terminal device can be effectively improved. Attached Figure Description

[0016] Figure 1 is a system architecture example diagram of a wireless communication system applicable to embodiments of this application.

[0017] Figure 2 is a flowchart illustrating the wireless communication method according to an embodiment of this application.

[0018] Figure 3 is a flowchart illustrating the wireless communication method according to an embodiment of this application.

[0019] Figure 4 is a schematic diagram of the terminal device switching between the first carrier, the second carrier, and the third carrier in different states.

[0020] Figure 5 is a schematic diagram of the structure of the terminal device according to an embodiment of this application.

[0021] Figure 6 is a schematic diagram of the structure of a network device according to an embodiment of this application.

[0022] Figure 7 is a schematic diagram of a communication apparatus according to an embodiment of this application. Detailed Implementation

[0023] The technical solutions in this application will now be described with reference to the accompanying drawings.

[0024] Wireless communication system

[0025] Figure 1 is an example diagram of the system architecture of a wireless communication system 100 to which embodiments of this application can be applied. The wireless communication system 100 may include a network device 110 and a terminal device 120. The network device 110 may be a device that communicates with the terminal device 120. The network device 110 can provide network coverage for a specific geographical area and can communicate with the terminal device 120 located within that coverage area. The terminal device 120 can access a network, such as a wireless network, through the network device 110. Optionally, the wireless communication system 100 may also include other network entities such as a network controller and a mobility management entity; this embodiment of the application does not limit this.

[0026] It should be understood that the technical solutions of the embodiments of this application can be applied to various communication systems, such as: fifth generation (5G) systems, new radio (NR), long term evolution (LTE) systems, LTE frequency division duplex (FDD) systems, LTE time division duplex (TDD) systems, etc. The technical solutions provided in this application can also be applied to future communication systems, such as sixth generation mobile communication systems, satellite communication systems, etc.

[0027] In this application embodiment, the terminal device may also be referred to as user equipment (UE), access terminal, user unit, user station, mobile station, mobile station (MS), mobile terminal (MT), remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent, or user apparatus. The terminal device in this application embodiment can be a device that provides voice and / or data connectivity to a user, and can be used to connect people, objects, and machines, such as a handheld device with wireless connectivity, vehicle-mounted device, etc. Terminal devices can also be mobile phones, tablets, laptops, PDAs, mobile internet devices (MIDs), wearable devices, virtual reality (VR) devices, augmented reality (AR) devices, wireless terminals in industrial control, self-driving, remote medical surgery, smart grids, transportation safety, smart cities, and smart homes. Optionally, terminal devices can act as base stations. For example, a terminal device can act as a dispatching entity, providing sidelink signals between terminal devices in vehicle-to-everything (V2X) or device-to-device (D2D) systems. For instance, cellular phones and cars communicate with each other using sidelink signals. Cellular phones and smart home devices communicate without relaying communication signals through base stations.

[0028] In this embodiment, the network device can be a device used to communicate with a terminal device. The network device can be an access network device or a wireless access network device. For example, the network device can be a base station. The term "base station" can broadly encompass various names as follows, or can be replaced by names such as: NodeB, evolved NodeB (eNB), next-generation NodeB (gNB), relay station, transmitting and receiving point (TRP), transmitting point (TP), master station (MeNB), secondary station (SeNB), multi-mode radio (MSR) node, home base station, network controller, access node, wireless node, access point (AP), transmission node, transceiver node, baseband unit (BBU), remote radio unit (RRU), active antenna unit (AAU), remote radio head (RRH), central unit (CU), distributed unit (DU), positioning node, etc. A base station can be a macro base station, micro base station, relay node, donor node, or similar entity, or a combination thereof. A base station can also refer to a communication module, modem, or chip installed within the aforementioned equipment or apparatus. A base station can also be a mobile switching center, or an entity that performs base station functions in device-to-device (D2D), vehicle-to-everything (V2X), and machine-to-machine (M2M) communications, a network-side device in a 6G network, or an entity that performs base station functions in future communication systems. A base station can support networks using the same or different access technologies. The embodiments of this application do not limit the specific technologies or device forms used in the network equipment.

[0029] The base stations described above can be fixed or mobile. For example, a helicopter or drone can be configured to act as a mobile base station, and one or more cells can move depending on the location of the mobile base station. In other examples, a helicopter or drone can be configured as a device to communicate with another base station. In some deployments, network equipment can refer to either a CU or a DU; or, network equipment may include both CUs and DUs. Base stations may also include AAUs.

[0030] Network devices and terminal devices can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; they can also be deployed on water; and they can also be deployed in the air on airplanes, balloons, and satellites. This application does not limit the scenario in which the network devices and terminal devices are located.

[0031] It should be understood that all or part of the functions of the communication device in this application can also be implemented by software functions running on hardware, or by virtualization functions instantiated on a platform such as a cloud platform.

[0032] In 4G and 5G systems, terminal devices consume significant power during cell search and selection. This is because a large number of potential cells are deployed within a wide frequency band. Since terminal devices have no prior information before accessing the network, they are forced to perform blind searches across this wide frequency band, resulting in substantial power consumption. Furthermore, because network equipment cannot inform terminal devices in advance of their preferred application scenarios within a given cell, the initial access design is uniform for all types of terminal devices. However, 6G systems introduce multiple application scenarios, necessitating a rethinking of cell search, cell selection, and initial access mechanisms suitable for 6G.

[0033] Therefore, this application proposes that a terminal device receives first information sent by a network device on a first carrier and determines a second carrier associated with a cell based on the first information, thereby performing camping and / or cell access on the second carrier. Since the first carrier may not be associated with a cell, a wider configuration is unnecessary, reducing the complexity of blind detection on the first carrier for the terminal device and thus reducing its power consumption. Furthermore, since the terminal device can obtain information about the second carrier in advance through the first information, and the second carrier is associated with a cell, it can find a cell for camping and / or access more quickly, reducing access latency. In addition, since the network device can notify the terminal device of the second carrier information through the first information, the flexibility of configuring the second carrier by the network device is increased, enabling more efficient deployment. It is evident that by setting a first carrier and a second carrier for camping and / or cell access, and sending first information to the terminal device via the first carrier to determine the second carrier, the initial access performance of the terminal device can be effectively improved.

[0034] The technical solutions of the embodiments of this application will be described in detail below with reference to Figure 2.

[0035] Figure 2 is a schematic flowchart of the communication method provided in an embodiment of this application. The method 200 shown in Figure 2 can be executed by a terminal device and a network device. The terminal device can be, for example, the terminal device 120 shown in Figure 1, and the network device can be, for example, the network device 110 shown in Figure 1.

[0036] Referring to Figure 2, in step 210, the network device sends first information to the terminal device on the first carrier.

[0037] Accordingly, in step 220, the terminal device receives the first information sent by the network device on the first carrier.

[0038] This application defines multiple carriers, including a first carrier and a second carrier. The first carrier can also be called the initial carrier, and the first information transmitted on the first carrier is used to determine one or more second carriers. The second carrier can also be called the anchor carrier, and the second carrier is associated with a cell and used for terminal device camping and / or cell access. Since the first information can assist the terminal device in determining one or more second carriers, the first information can also be called auxiliary information.

[0039] For a terminal device in the Radio Resource Control (RRC) Idle (RRC_IDLE) state, during cell selection, it first searches for a first carrier. Once the terminal device finds the first carrier, it can acquire first information on that carrier. This first information could be broadcast information sent by a network device on the first carrier. The first information includes information needed to determine one or more second carriers. The second carriers are associated with the cell; therefore, the user equipment can select one of one or more second carriers for current camping or cell access. For example, the Random Access Channel (RACH) procedure is performed on the second carrier selected by the terminal device.

[0040] After a terminal device accesses the network on the second carrier, it can transmit data with the network device. In one implementation, the second carrier is also used for data transmission between the terminal device and the network device; that is, the terminal device can communicate with the network device on the second carrier. In another implementation, the network device can further configure the terminal device onto a third carrier, enabling the terminal device to communicate with the network device on the third carrier.

[0041] For example, as shown in Figure 3, method 200 also includes steps 230 and 240.

[0042] In step 230, the network device sends second information to the terminal device on the second carrier.

[0043] Accordingly, in step 240, the terminal device receives the second information sent by the network device on the second carrier.

[0044] The second information is used to instruct the terminal device to transmit data with the network device on the third carrier.

[0045] The third carrier is another carrier defined in this application embodiment that is not used for the first and second carriers. The third carrier is used for data transmission between the terminal device and the network device. Therefore, the third carrier can also be called a data carrier. It should be noted that the terminal device can communicate with the network device on the third carrier; that is, the third carrier is used for the terminal device to perform communication operations with the network device, but the terminal device cannot reside on the third carrier. As an example, if the current throughput of the second carrier is sufficient, the terminal device can be configured to communicate on the second carrier; only if the current throughput of the second carrier is insufficient will the third carrier be opened for the terminal device to communicate.

[0046] The carriers that a terminal device is allowed to stay on may differ depending on its RRC state. In one implementation, when the terminal device is in RRC connected state (RRC_CONNECTED), the carriers allowed for staying include the second and third carriers. In another implementation, when the terminal device is in RRC idle state, the carriers allowed for staying include the second carrier. Here, "stay" refers to the terminal device being in RRC connected state but not yet transmitting data with the network device. In this case, the terminal device can stay on either the second or third carrier depending on the network device's configuration. "Camp" refers to the terminal device in RRC idle state, where the terminal device needs to listen for paging signals sent by the network device. That is, for a terminal device in RRC connected state, it can stay on either the second or third carrier depending on the network device's configuration. However, once the terminal device's RRC connected state is released, the terminal device will return to the second carrier to listen for paging messages sent by the network device. In addition, due to cell reselection caused by the mobility of terminal devices, terminal devices may leave the currently camped second carrier and camp on another second carrier.

[0047] As mentioned above, on the one hand, since the first carrier is not associated with any cell and its function is to transmit first information, it does not need to be configured with a wide range. The terminal device only needs to perform a blind search on the first carrier, and multiple cells can share the same first carrier, which greatly reduces the complexity of blind detection on the first carrier and thus reduces the power consumption of the terminal device. On the other hand, by providing the terminal device with information about the second carrier through the first carrier, the terminal device obtains prior information related to the second carrier through the first information transmitted on the first carrier without making additional assumptions. This allows it to find the carrier currently used for camping and / or cell access more quickly, reducing the latency of initial access and cell selection. Furthermore, for the network device, the network device can notify the terminal device of the second carrier information through the first information, increasing the flexibility of the network device in configuring the second carrier and enabling more efficient deployment. It can be seen that the embodiments of this application can effectively improve the initial access performance of the terminal device by defining the first carrier and the second carrier and sending the first information for determining the second carrier to the terminal device through the first carrier. Furthermore, the performance of data transmission between the terminal device and the network device can be improved by defining a third carrier for data transmission between the terminal device and the network device.

[0048] In some implementations, the bandwidth of the second carrier differs from that of the first carrier. For example, the bandwidth of the second carrier may be greater than that of the first carrier, or vice versa. This is because the terminal device needs to perform a blind search on the first carrier; setting the bandwidth of the first carrier to be smaller reduces the complexity of blind detection on the first carrier. Conversely, because the second carrier is associated with the cell, setting its bandwidth to be larger allows for more terminal devices to camp and / or access the cell.

[0049] As an example, Figure 4 illustrates the handover of a terminal device between the first carrier, second carrier, and third carrier in different states. As shown in Figure 4, after power-on, the terminal device (for UE) obtains first information by searching the first carrier and determines one or more second carriers using this first information. It then selects a suitable carrier from among these second carriers for camping and / or cell access. The second carrier allows the terminal device in either RRC connected or RRC idle state to remain on it. Subsequently, the network device can configure the terminal device to communicate on the third carrier through dedicated configuration. The third carrier is only used for data transmission between the terminal device and the network device; therefore, only terminal devices in the RRC connected state are allowed to remain on the third carrier. When the terminal device enters the RRC connected state, it may be configured to remain on the second carrier or move to the third carrier to perform further operations. When the terminal device is released from the RRC connected state to the RRC idle state, it will be moved to the second carrier.

[0050] The network device can transmit a synchronization signal on a first carrier. The bandwidth of the first carrier can be predefined, and the bandwidth of the first carrier may include, for example, the synchronization signal and / or first information. Optionally, the period of the synchronization signal transmitted on the first carrier can be predefined. Optionally, the possible frequency positions of the first carrier can be predefined. When searching for the first carrier, the terminal device searches for the predefined synchronization signal at the possible frequency positions. As an example, the bandwidth of the synchronization signal transmitted on the first carrier may include one resource block (RB) corresponding to 12 subcarriers, where the bandwidth of each subcarrier may be, for example, 15*2^n kHz, n=0, n=1, n=2, ... As another example, the bandwidth of the synchronization signal transmitted on the first carrier may be between 180 kHz and 3 MHz.

[0051] When the terminal device detects the first carrier, it can receive first information on that carrier. The terminal device can obtain resource configurations related to the first information and determine the locations for receiving the first information based on these configurations. These resource configurations may include, for example, resource configurations for the first information itself, or resource configurations for scheduling other information related to the first information. The resource configurations related to the first information can be dynamically scheduled by the network device, pre-configured by the network device (or semi-statically scheduled), or predefined (or protocol-defined).

[0052] In one implementation, when the network device dynamically schedules the first information, it can transmit third information on the first carrier and indicate the resource configuration associated with the first information through the third information. For example, the first information can be scheduled through downlink control messages (DCI) transmitted by the network device on the first carrier, and the third information is used to indicate the resource configuration of the physical downlink control channel (PDCCH) carrying the DCI (e.g., frequency domain resources and / or time domain resources of the PDCCH). The terminal device obtains the resource configuration for listening to the PDCCH from the third information, and then obtains the first information by listening to the PDCCH. Optionally, the third information is associated with a synchronization signal transmitted on the first carrier; for example, the resource position of the third information in the first carrier is associated with the resource position of the synchronization signal in the first carrier. As an example, there is a certain time interval between the time domain position of the third information and the time domain position of the synchronization signal. Assuming that there are N1 time domain symbols between the third information and the synchronization signal, the terminal device can start receiving the third information at the end of the N1 time domain symbols following the synchronization signal.

[0053] In another implementation, the resource configuration associated with the first information can be pre-configured by the network device. The network device can indicate the pre-configured resources through third information. Assume that the network device indicates multiple pre-configured resources to the terminal device through the third information, including pre-configured resource 1, pre-configured resource 2, and pre-configured resource 3. The terminal device detects the synchronization signal block / physical broadcast channel block (SS / PBCH block, SSB) transmitted on the first carrier and obtains system information (e.g., master information base, MIB) based on the SSB. This system information indicates which pre-configured resource among pre-configured resource 1, pre-configured resource 2, and pre-configured resource 3 the terminal device should use to receive the first information. If the system information indicates pre-configured resource 1, the terminal device receives the first information based on pre-configured resource 1; if the system information indicates pre-configured resource 2, the terminal device receives the first information based on pre-configured resource 2; and if the system information indicates pre-configured resource 3, the terminal device receives the first information based on pre-configured resource 3.

[0054] In another implementation, the resource configuration associated with the first information can be predefined (or, protocol-defined). Optionally, the first information is associated with a synchronization signal transmitted on the first carrier; for example, the resource position of the first information on the first carrier is associated with the resource position of the synchronization signal on the first carrier. As an example, there is a certain time interval between the time-domain position of the first information and the time-domain position of the synchronization signal. Assuming that there are N² time-domain symbols between the first information and the synchronization signal, the terminal device can begin receiving the first information after the N² time-domain symbols following the synchronization signal have elapsed.

[0055] In some implementations, the first information is valid for a predetermined duration. This predetermined duration can also be called the validity period of the first information, and the first information is only valid within this predetermined duration. Therefore, the terminal device will assume that the acquired first information is valid within this predetermined duration; if the predetermined duration is exceeded, the terminal device needs to reacquire the first information. This predetermined duration information can be sent by the network device, for example, indicated by the aforementioned third information (i.e., sent to the terminal device along with resource configurations related to the first information); or, the predetermined duration can be predefined (or, as agreed upon by the protocol). The predetermined duration can be represented by a start position and a duration. For example, the network device can configure the terminal device with start position T0 and duration t, then the terminal device can determine that the first information is effective from time T0 and expires after time T0+t. If the network device does not configure one or both of the start position T0 and duration t, the unconfigured parameter can be based on a predefined value. The starting position T0 of the predetermined duration can be associated with the position where the terminal device receives the first information. For example, the first information can take effect immediately after the terminal device receives the first information, or take effect after a certain period of time.

[0056] In other implementations, the first information can remain valid indefinitely, and the terminal device can re-acquire the updated first information when the network device notifies the terminal device to update the first information.

[0057] The following is a detailed description of the content that may be carried in the first piece of information.

[0058] The first information needs to include information related to the search for the second carrier. For example, in some implementations, the first information includes one or more of the following: the communication scenario (or communication service or use case) associated with the second carrier; the resource configuration associated with the second carrier; and the type of terminal device associated with the second carrier.

[0059] The first information includes communication scenarios associated with the second carrier, such as one or more of the following: enhanced mobile broadband (eMBB), ultra-reliable and low-latency communication (URLLC), internet of things (IoT), reduced capability (RedCap), and non-terrestrial network (NTN). The first information may include information about multiple second carriers, where different second carriers can be designed for different communication scenarios. For example, some second carriers are used for eMBB services; some are used for URLLC services; some are used for IoT services; some are used for reduced capability services; and some are used for NTN services. In this case, the first information may include information about multiple second carriers and information about the communication scenario associated with each second carrier. Designing different second carriers for different communication scenarios allows for better adaptation to different application scenarios in future communication networks.

[0060] The resource configuration related to the second carrier included in the first information may include one or more of the following: bandwidth information of the second carrier; information on the synchronization signal transmitted on the second carrier; and information on the payload transmitted on the second carrier. The bandwidth information of the second carrier may include, for example, the bandwidth of the synchronization signal transmitted on the second carrier (e.g., the minimum bandwidth required to transmit the synchronization signal on the second carrier), and / or the bandwidth of the system information transmitted on the second carrier (e.g., the minimum bandwidth required to transmit the system information on the second carrier). In related technologies, the bandwidth of the synchronization signal is predefined (e.g., 3.6MHz), and the bandwidth of the system information can be indicated by MIB information (e.g., 5MHz or 10MHz, etc.). However, in this embodiment, the bandwidth information of the system information can be obtained from the first information transmitted on the first carrier. Therefore, the payload of the MIB information can be saved on the second carrier, allowing for a reduction in the time-domain length of the MIB information. Information about the synchronization signal transmitted on the second carrier may include, for example, one or more of the following: the frequency position of the synchronization signal transmitted on the second carrier; the subcarrier spacing of the synchronization signal transmitted on the second carrier; the period of the synchronization signal transmitted on the second carrier; the beam direction corresponding to the synchronization signal transmitted on the second carrier; the bandwidth of the synchronization signal transmitted on the second carrier; and the pattern of the synchronization signal transmitted on the second carrier. The period of the synchronization signal may, for example, refer to the transmission period of a synchronization signal burst (SSB burst), and the pattern of the synchronization signal may, for example, refer to the resource positional relationship between different SSBs within an SSB burst. As an example, an SSB burst includes multiple SSBs, each corresponding to a different SSB index. In related technologies, the interval between adjacent SSBs is four time-domain symbols. However, in this embodiment, the number of symbols between adjacent SSBs is allowed to vary (e.g., the number of symbols between adjacent SSBs is not limited to four time-domain symbols; other numbers of symbols can also be used), and different numbers of symbols between different SSBs are allowed (e.g., two time-domain symbols between SSB#1 and SSB#2, four time-domain symbols between SSB#1 and SSB#2, etc.). In this case, by carrying a pattern of synchronization signals in the first information, such as the resource location relationship of multiple SSBs in the SSB burst, the terminal device can detect synchronization signals on the second carrier. The information of the payload transmitted on the second carrier may include, for example, the frequency position of the payload transmitted on the second carrier, and / or the subcarrier spacing of the payload transmitted on the second carrier.

[0061] The type of terminal device associated with the second carrier included in the first information may be related to the capabilities of the terminal device, or in other words, the type of terminal device may be determined based on the capabilities of the terminal device. Different types of terminal devices may camp and / or access the cell based on different second carriers. As an example, different types of terminal devices may be terminal devices with different protocol versions, such as high-version terminal devices and low-version terminal devices; or, for example, different types of terminal devices may be different types of terminal devices in a certain communication scenario, such as different types of terminal devices in an eMBB scenario.

[0062] In some implementations, the first information may also include information related to network energy saving. For example, the first information may include second indication information, which indicates whether the second carrier supports on-demand transmission of signals. The on-demand transmission signal may be, for example, on-demand SSB or on-demand system information. If the first information indicates that a second carrier supports on-demand transmission of system information, it means that the second carrier may not systematically transmit system information; instead, the terminal device sends a request message, and the network device transmits the system information based on the terminal device's request. If the first information indicates that a second carrier supports on-demand transmission of synchronization signals, it means that the network device on that second carrier may not transmit synchronization signals based on a traditional period, but rather based on a longer period, or based on a terminal device's request. Further, optionally, the first information may also include resource configuration related to the on-demand transmission signal to inform the terminal device at which resource locations to receive the signal; and / or, include resource configuration for the terminal device to request a request message for the on-demand transmission signal to instruct the terminal device to send the request message on which resources to request the network device to send the on-demand transmission signal (e.g., synchronization signal or system information).

[0063] In some implementations, the first information may further include first indication information, which indicates the types of terminal devices allowed and / or prohibited from camping and accessing the cell via the second carrier. If the first information indicates that a certain second carrier prohibits access for one or more types of terminal devices, then these terminal devices will not camp or access the cell on that second carrier, or even if these terminal devices initiate uplink access on that second carrier, it will be rejected by the network device. If the first information indicates that a certain second carrier allows access for one or more types of terminal devices, then these terminal devices can camp and access the cell on that second carrier. The first indication information may carry only the types of terminal devices allowed by each second carrier, or only the types of terminal devices prohibited by each second carrier, or both the types of terminal devices allowed and prohibited by each second carrier. Here, the type of terminal device may be the type associated with the capabilities of the terminal device mentioned above, or it may be a type of terminal device defined based on other methods.

[0064] After obtaining the first information, the terminal device can select a suitable second carrier from one or more second carriers based on the first information for current camping and / or cell access. For example, the terminal device can determine the carrier for current camping and / or cell access from multiple second carriers based on one or more of the following: the strength of the synchronization signals of the multiple second carriers; the communication scenario associated with the multiple second carriers; and the type of terminal device associated with the multiple second carriers. For example, the terminal device can select the second carrier corresponding to the synchronization signal with the strongest synchronization signal among the multiple second carriers, which is associated with a cell that can be used as the cell for which the terminal device can currently camp and / or access. Another example is that the terminal device determines the usable second carrier based on its type. Assuming that second carrier A prohibits type 1 terminal devices and second carrier B prohibits type 2 terminal devices, if the terminal device is type 1, then the terminal device can camp on second carrier B and initiate random access, but cannot camp on second carrier A and initiate random access. If the terminal device is type 2, then the terminal device can camp on second carrier A and initiate random access, but cannot camp on second carrier B and initiate random access. The terminal device selects a second carrier and associates it with a serving cell. The terminal device can camp on that serving cell by reading the system information transmitted on the second carrier. Alternatively, the terminal device can access the network by performing a RACH procedure on the second carrier.

[0065] The synchronization signals described in this application embodiment may include cell-defined synchronization signals (CD-SSB) and / or non-cell-defined synchronization signals (NCD-SSB). For example, the synchronization signals transmitted on the second carrier may include cell-defined synchronization signals and / or non-cell-defined synchronization signals. As another example, the synchronization signals transmitted on the third carrier may include non-cell-defined synchronization signals. Of course, there may be no synchronization signal on the third carrier. At least one cell-defined synchronization signal is transmitted on the second carrier.

[0066] The method embodiments of this application have been described in detail above with reference to Figures 1 to 4. The apparatus embodiments of this application will be described in detail below with reference to Figures 5 to 7. It should be understood that the descriptions of the method embodiments correspond to the descriptions of the apparatus embodiments; therefore, any parts not described in detail can be referred to the preceding method embodiments.

[0067] Figure 5 is a schematic diagram of the structure of a terminal device provided in an embodiment of this application. The terminal device 500 shown in Figure 5 may include a transceiver unit 510. The transceiver unit 510 is used to receive first information sent by a network device on a first carrier, the first information being used to determine one or more second carriers, the second carriers being associated with a cell, and the second carriers being used for the terminal device to camp and / or access the cell.

[0068] In some implementations, the second carrier is also used for data transmission between the terminal device and the network device.

[0069] In some implementations, the transceiver unit 510 is further configured to: receive second information sent by the network device on the second carrier, the second information being used to instruct the terminal device to perform data transmission with the network device on the third carrier.

[0070] In some implementations, the resource configuration related to the first information is indicated by third information sent by the network device, or by a protocol agreement.

[0071] In some implementations, the first information is scheduled via DCI, and the third information is used to indicate the resource configuration of the PDCCH carrying the DCI.

[0072] In some implementations, the third information is associated with a synchronization signal transmitted on the first carrier.

[0073] In some implementations, the first information is valid for a predetermined period of time, the predetermined period of which is indicated by a third message sent by the network device or by a protocol agreement.

[0074] In some implementations, the first information includes one or more of the following: the communication scenario associated with the second carrier; the resource configuration associated with the second carrier; and the type of terminal device associated with the second carrier.

[0075] In some implementations, the type of the terminal device is related to the capabilities of the terminal device.

[0076] In some implementations, the communication scenario includes one or more of the following: eMBB; URLLC; IoT; lightweight; NTN.

[0077] In some implementations, the resource configuration associated with the second carrier includes one or more of the following: bandwidth information of the second carrier; information of the synchronization signal transmitted on the second carrier; and information of the payload transmitted on the second carrier.

[0078] In some implementations, the bandwidth information of the second carrier includes: the bandwidth of the synchronization signal transmitted on the second carrier; and / or, the bandwidth of the system information transmitted on the second carrier.

[0079] In some implementations, the information of the synchronization signal transmitted on the second carrier includes one or more of the following: the frequency position of the synchronization signal transmitted on the second carrier; the subcarrier spacing of the synchronization signal transmitted on the second carrier; the period of the synchronization signal transmitted on the second carrier; the beam direction corresponding to the synchronization signal transmitted on the second carrier; the bandwidth of the synchronization signal transmitted on the second carrier; and the pattern of the synchronization signal transmitted on the second carrier.

[0080] In some implementations, the information of the payload transmitted on the second carrier includes: the frequency position of the payload transmitted on the second carrier; and / or, the subcarrier spacing of the payload transmitted on the second carrier.

[0081] In some implementations, the first information includes one or more of the following: first indication information for indicating the type of terminal device that is allowed and / or prohibited from camping or accessing the cell via the second carrier; second indication information for indicating whether the second carrier supports on-demand transmission signals; resource configuration related to the on-demand transmission signals; and resource configuration for a request message from the terminal device requesting the on-demand transmission signals; wherein the on-demand transmission signals include on-demand transmission system information and / or on-demand transmission synchronization signals.

[0082] In some implementations, the terminal device 500 further includes a processing unit 520 for determining, from the plurality of second carriers, the carrier currently performing camping and / or cell access based on one or more of the following: the strength of the synchronization signal of the plurality of second carriers; the communication scenario associated with the plurality of second carriers; and the type of terminal device associated with the plurality of second carriers.

[0083] In some implementations, the bandwidth of the second carrier is greater than the bandwidth of the first carrier.

[0084] In some implementations, the synchronization signal transmitted on the second carrier includes a cell-defined synchronization signal and / or a non-cell-defined synchronization signal; and / or, the synchronization signal transmitted on the third carrier includes a non-cell-defined synchronization signal or does not include a synchronization signal.

[0085] In some implementations, the terminal device is in an RRC connected state, and the carriers that allow the terminal device to remain include the second carrier and the third carrier; and / or, the terminal device is in an RRC idle state, and the carriers that allow the terminal device to remain include the second carrier.

[0086] It is understood that the transceiver unit 510 may be, for example, a transceiver 730, and the processing unit 520 may be, for example, a processor 710. Additionally, optionally, the terminal device 500 may also include a memory 720, as detailed in Figure 7.

[0087] Figure 6 is a schematic diagram of the structure of a network device provided in an embodiment of this application. The network device 600 shown in Figure 6 may include a transceiver unit 610. The transceiver unit 610 is used to send first information to a terminal device on a first carrier, the first information being used to determine one or more second carriers, the second carriers being associated with a cell, and the second carriers being used for the terminal device to camp and / or access the cell.

[0088] In some implementations, the second carrier is also used for data transmission between the terminal device and the network device.

[0089] In some implementations, the transceiver unit 610 is further configured to: send second information to the terminal device on the second carrier, the second information being used to instruct the terminal device to perform data transmission with the network device on the third carrier.

[0090] In some implementations, the resource configuration related to the first information is indicated by third information sent by the network device, or by a protocol agreement.

[0091] In some implementations, the first information is scheduled via DCI, and the third information is used to indicate the resource configuration of the PDCCH carrying the DCI.

[0092] In some implementations, the third information is associated with a synchronization signal transmitted on the first carrier.

[0093] In some implementations, the first information is valid for a predetermined period of time, the predetermined period of which is indicated by a third message sent by the network device or by a protocol agreement.

[0094] In some implementations, the first information includes one or more of the following: the communication scenario associated with the second carrier; the resource configuration associated with the second carrier; and the type of terminal device associated with the second carrier.

[0095] In some implementations, the type of the terminal device is related to the capabilities of the terminal device.

[0096] In some implementations, the communication scenario includes one or more of the following: eMBB; URLLC; IoT; lightweight; NTN.

[0097] In some implementations, the resource configuration associated with the second carrier includes one or more of the following: bandwidth information of the second carrier; information of the synchronization signal transmitted on the second carrier; and information of the payload transmitted on the second carrier.

[0098] In some implementations, the bandwidth information of the second carrier includes: the bandwidth of the synchronization signal transmitted on the second carrier; and / or, the bandwidth of the system information transmitted on the second carrier.

[0099] In some implementations, the information of the synchronization signal transmitted on the second carrier includes one or more of the following: the frequency position of the synchronization signal transmitted on the second carrier; the subcarrier spacing of the synchronization signal transmitted on the second carrier; the period of the synchronization signal transmitted on the second carrier; the beam direction corresponding to the synchronization signal transmitted on the second carrier; the bandwidth of the synchronization signal transmitted on the second carrier; and the pattern of the synchronization signal transmitted on the second carrier.

[0100] In some implementations, the information of the payload transmitted on the second carrier includes: the frequency position of the payload transmitted on the second carrier; and / or, the subcarrier spacing of the payload transmitted on the second carrier.

[0101] In some implementations, the first information includes one or more of the following: first indication information for indicating the type of terminal device that is allowed and / or prohibited from camping or accessing the cell via the second carrier; second indication information for indicating whether the second carrier supports on-demand transmission signals; resource configuration related to the on-demand transmission signals; and resource configuration for a request message from the terminal device requesting the on-demand transmission signals; wherein the on-demand transmission signals include on-demand transmission system information and / or on-demand transmission synchronization signals.

[0102] In some implementations, the bandwidth of the second carrier is greater than the bandwidth of the first carrier.

[0103] In some implementations, the synchronization signal transmitted on the second carrier includes a cell-defined synchronization signal and / or a non-cell-defined synchronization signal; and / or, the synchronization signal transmitted on the third carrier includes a non-cell-defined synchronization signal or does not include a synchronization signal.

[0104] In some implementations, the terminal device is in an RRC connected state, and the carriers that allow the terminal device to remain include the second carrier and the third carrier; and / or, the terminal device is in an RRC idle state, and the carriers that allow the terminal device to remain include the second carrier.

[0105] It is understood that the transceiver unit 610 may be, for example, a transceiver 730. Additionally, the network device 600 may optionally include a processor 710 and a memory 720, as detailed in Figure 7.

[0106] Figure 7 is a schematic structural diagram of a communication apparatus according to an embodiment of this application. The dashed lines in Figure 7 indicate that the unit or module is optional. The apparatus 700 can be used to implement the methods described in the above method embodiments. The apparatus 700 may be, for example, a chip, a terminal device, or a network device.

[0107] The apparatus 700 may include one or more processors 710. The processors 710 may support the apparatus 700 in implementing the methods described in the foregoing method embodiments. The processor 710 may be a general-purpose processor or a special-purpose processor. For example, the processor 710 may be a central processing unit (CPU). Alternatively, the processor 710 may also be other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or any conventional processor.

[0108] The apparatus 700 may further include one or more memories 720. The memories 720 store programs that can be executed by the processor 710, causing the processor 710 to perform the methods described in the above method embodiments. The memories 720 may be independent of the processor 710, or they may be integrated into the processor 710.

[0109] The device 700 may also include a transceiver 730. The processor 710 can communicate with other devices or chips via the transceiver 730. For example, the processor 710 can send and receive data with other devices or chips via the transceiver 730.

[0110] This application also provides a communication system. The communication system includes the terminal device and network device described above. In some implementations, the system further includes other devices that interact with the terminal device and network device.

[0111] This application also provides a computer-readable storage medium for storing a program. This computer-readable storage medium can be applied to a terminal device or network device provided in this application, and the program causes a computer to execute the methods performed by the terminal device or network device in various embodiments of this application.

[0112] This application also provides a computer program product. The computer program product includes a program. This computer program product can be applied to a terminal device or network device provided in this application embodiment, and the program causes a computer to execute the methods performed by the terminal device or network device in the various embodiments of this application.

[0113] This application also provides a computer program. This computer program can be applied to the terminal device or network device provided in this application, and the computer program causes the computer to execute the methods performed by the terminal device or network device in the various embodiments of this application.

[0114] It should be understood that the terms "system" and "network" in the embodiments of this application can be used interchangeably. Furthermore, the terminology used in this application is only for explaining specific embodiments of this application and is not intended to limit this application. The terms "first," "second," "third," and "fourth," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish different objects, not to describe a specific order. In addition, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0115] In the embodiments of this application, the term "instruction" can be a direct instruction, an indirect instruction, or an indication of a relationship. For example, A instructing B can mean that A directly instructs B, such as B being able to obtain information through A; it can also mean that A indirectly instructs B, such as A instructing C, so B can obtain information through C; or it can mean that there is a relationship between A and B.

[0116] In the embodiments of this application, "B corresponding to A" means that B is associated with A, and B can be determined based on A. However, it should also be understood that determining B based on A does not mean that B is determined solely based on A; B can also be determined based on A and / or other information.

[0117] In the embodiments of this application, the term "correspondence" can indicate a direct or indirect correspondence between two things, or an association between two things, or a relationship such as instruction and being instructed, configuration and being configured.

[0118] In the embodiments of this application, "predefined" or "preconfigured" can be implemented by pre-storing corresponding codes, tables, or other means that can be used to indicate relevant information in the device (e.g., including terminal devices and network devices). This application does not limit the specific implementation method. For example, predefined can refer to what is defined in the protocol.

[0119] In this application embodiment, the "protocol" may refer to a standard protocol in the field of communication, such as the LTE protocol, the NR protocol, and related protocols applied to future communication systems. This application does not limit this.

[0120] In the embodiments of this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0121] In the various embodiments of this application, the order of the above-mentioned processes does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0122] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between apparatuses or units may be electrical, mechanical, or other forms.

[0123] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0124] In addition, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0125] In the above embodiments, implementation can be achieved entirely or partially through software, hardware, firmware, or any combination thereof. When implemented using software, it can be implemented entirely or partially 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 this application are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium that a computer can read or a data storage device such as a server or data center that integrates one or more available media. The available media may be magnetic media (e.g., floppy disks, hard disks, magnetic tapes), optical media (e.g., digital video discs (DVDs)), or semiconductor media (e.g., solid-state disks (SSDs)).

[0126] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A communication method, characterized in that, include: The terminal device receives first information sent by the network device on a first carrier. The first information is used to determine one or more second carriers, which are associated with a cell and are used for the terminal device to camp and / or access the cell.

2. The method according to claim 1, characterized in that, The second carrier is also used for data transmission between the terminal device and the network device.

3. The method according to claim 1 or 2, characterized in that, The method further includes: The terminal device receives second information sent by the network device on the second carrier, the second information being used to instruct the terminal device to transmit data with the network device on the third carrier.

4. The method according to any one of claims 1 to 3, characterized in that, The resource configuration related to the first information is indicated by the third information sent by the network device, or by the protocol.

5. The method according to claim 4, characterized in that, The first information is scheduled via downlink control information (DCI), and the third information is used to indicate the resource configuration of the physical downlink control channel (PDCCH) carrying the DCI.

6. The method according to claim 4 or 5, characterized in that, The third information is associated with the synchronization signal transmitted on the first carrier.

7. The method according to any one of claims 1 to 6, characterized in that, The first information is valid for a predetermined period of time, which is indicated by a third information sent by the network device or by a protocol agreement.

8. The method according to any one of claims 1 to 7, characterized in that, The first information includes one or more of the following: The communication scenario associated with the second carrier; Resource configuration related to the second carrier; The type of terminal device associated with the second carrier.

9. The method according to claim 8, characterized in that, The type of terminal device is related to the capabilities of the terminal device.

10. The method according to claim 8 or 9, characterized in that, The communication scenarios include one or more of the following: Enhanced Mobile Broadband (eMBB); Ultra-Reliable Low-Latency Communication (URLLC); Internet of Things (IoT); Lightweight; Non-terrestrial network (NTN).

11. The method according to any one of claims 8 to 10, characterized in that, The resource configuration associated with the second carrier includes one or more of the following: The bandwidth information of the second carrier; Information of the synchronization signal transmitted on the second carrier; The information of the payload transmitted on the second carrier.

12. The method according to claim 11, characterized in that, The bandwidth information of the second carrier includes: The bandwidth of the synchronization signal transmitted on the second carrier; and / or, The bandwidth of the system information transmitted on the second carrier.

13. The method according to claim 11 or 12, characterized in that, The information of the synchronization signal transmitted on the second carrier includes one or more of the following: The frequency position of the synchronization signal transmitted on the second carrier; The subcarrier spacing of the synchronization signal transmitted on the second carrier; The period of the synchronization signal transmitted on the second carrier; The beam direction corresponding to the synchronization signal transmitted on the second carrier; The bandwidth of the synchronization signal transmitted on the second carrier; The pattern of the synchronization signal transmitted on the second carrier.

14. The method according to any one of claims 11 to 13, characterized in that, The information of the payload transmitted on the second carrier includes: The frequency position of the payload transmitted on the second carrier; and / or, The subcarrier spacing of the payload transmitted on the second carrier.

15. The method according to any one of claims 1 to 14, characterized in that, The first information includes one or more of the following: The first indication information is used to indicate the type of terminal equipment that is allowed and / or prohibited from camping or accessing the cell via the second carrier; The second indication information is used to indicate whether the second carrier supports on-demand transmission signals; Resource configuration related to the on-demand transmission of signals; Resource configuration for the request message used by the terminal device to request the on-demand transmitted signal; The on-demand transmitted signals include on-demand transmitted system information and / or on-demand transmitted synchronization signals.

16. The method according to any one of claims 1 to 15, characterized in that, The method further includes: The terminal device determines the carrier currently performing camping and / or cell access from the plurality of second carriers based on one or more of the following: The strength of the synchronization signal of the plurality of second carriers; The communication scenarios associated with the multiple second carriers; The types of terminal devices associated with the multiple second carriers.

17. The method according to any one of claims 1 to 16, characterized in that, The bandwidth of the second carrier is greater than the bandwidth of the first carrier.

18. The method according to any one of claims 1 to 17, characterized in that, The synchronization signal transmitted on the second carrier includes cell-defined synchronization signals and / or non-cell-defined synchronization signals; and / or, The synchronization signal transmitted on the third carrier may include or exclude synchronization signals not defined by the cell.

19. The method according to any one of claims 1 to 18, characterized in that, The terminal device is in the Radio Resource Control (RRC) connected state, and the carriers that the terminal device is allowed to stay on include the second carrier and the third carrier; and / or, the terminal device is in the RRC idle state, and the carriers that the terminal device is allowed to stay on include the second carrier.

20. A communication method, characterized in that, include: The network device sends first information to the terminal device on a first carrier. The first information is used to determine one or more second carriers, which are associated with a cell and are used for the terminal device to camp and / or access the cell.

21. The method according to claim 20, characterized in that, The second carrier is also used for data transmission between the terminal device and the network device.

22. The method according to claim 20 or 21, characterized in that, The method further includes: The network device sends second information to the terminal device on the second carrier, the second information being used to instruct the terminal device to transmit data with the network device on the third carrier.

23. The method according to any one of claims 20 to 22, characterized in that, The resource configuration related to the first information is indicated by the third information sent by the network device, or by the protocol.

24. The method according to claim 23, characterized in that, The first information is scheduled via downlink control information (DCI), and the third information is used to indicate the resource configuration of the physical downlink control channel (PDCCH) carrying the DCI.

25. The method according to claim 23 or 24, characterized in that, The third information is associated with the synchronization signal transmitted on the first carrier.

26. The method according to any one of claims 20 to 25, characterized in that, The first information is valid for a predetermined period of time, which is indicated by a third information sent by the network device or by a protocol agreement.

27. The method according to any one of claims 20 to 26, characterized in that, The first information includes one or more of the following: The communication scenario associated with the second carrier; Resource configuration related to the second carrier; The type of terminal device associated with the second carrier.

28. The method according to claim 27, characterized in that, The type of terminal device is related to the capabilities of the terminal device.

29. The method according to claim 27 or 28, characterized in that, The communication scenarios include one or more of the following: Enhanced Mobile Broadband (eMBB); Ultra-Reliable Low-Latency Communication (URLLC); Internet of Things (IoT); Lightweight; Non-terrestrial network (NTN).

30. The method according to any one of claims 27 to 29, characterized in that, The resource configuration associated with the second carrier includes one or more of the following: The bandwidth information of the second carrier; Information of the synchronization signal transmitted on the second carrier; The information of the payload transmitted on the second carrier.

31. The method according to claim 30, characterized in that, The bandwidth information of the second carrier includes: The bandwidth of the synchronization signal transmitted on the second carrier; and / or, The bandwidth of the system information transmitted on the second carrier.

32. The method according to claim 30 or 31, characterized in that, The information of the synchronization signal transmitted on the second carrier includes one or more of the following: The frequency position of the synchronization signal transmitted on the second carrier; The subcarrier spacing of the synchronization signal transmitted on the second carrier; The period of the synchronization signal transmitted on the second carrier; The beam direction corresponding to the synchronization signal transmitted on the second carrier; The bandwidth of the synchronization signal transmitted on the second carrier; The pattern of the synchronization signal transmitted on the second carrier.

33. The method according to any one of claims 30 to 32, characterized in that, The information of the payload transmitted on the second carrier includes: The frequency position of the payload transmitted on the second carrier; and / or, The subcarrier spacing of the payload transmitted on the second carrier.

34. The method according to any one of claims 20 to 33, characterized in that, The first information includes one or more of the following: The first indication information is used to indicate the type of terminal equipment that is allowed and / or prohibited from camping or accessing the cell via the second carrier; The second indication information is used to indicate whether the second carrier supports on-demand transmission signals; Resource configuration related to the on-demand transmission of signals; Resource configuration for the request message used by the terminal device to request the on-demand transmitted signal; The on-demand transmitted signals include on-demand transmitted system information and / or on-demand transmitted synchronization signals.

35. The method according to any one of claims 20 to 34, characterized in that, The bandwidth of the second carrier is greater than the bandwidth of the first carrier.

36. The method according to any one of claims 20 to 35, characterized in that, The synchronization signal transmitted on the second carrier includes cell-defined synchronization signals and / or non-cell-defined synchronization signals; and / or, The synchronization signal transmitted on the third carrier may include or exclude synchronization signals not defined by the cell.

37. The method according to any one of claims 20 to 36, characterized in that, The terminal device is in the Radio Resource Control (RRC) connected state, and the carriers that the terminal device is allowed to stay on include the second carrier and the third carrier; and / or, the terminal device is in the RRC idle state, and the carriers that the terminal device is allowed to stay on include the second carrier.

38. A terminal device, characterized in that, include: The transceiver unit is configured to receive first information sent by a network device on a first carrier, the first information being used to determine one or more second carriers, the second carriers being associated with a cell, and the second carriers being used for camping and / or cell access of the terminal device.

39. The terminal device according to claim 38, characterized in that, The second carrier is also used for data transmission between the terminal device and the network device.

40. The terminal device according to claim 38 or 39, characterized in that, The transceiver unit is also used for: The terminal device receives second information sent by the network device on the second carrier, the second information being used to instruct the terminal device to transmit data with the network device on the third carrier.

41. The terminal device according to any one of claims 38 to 40, characterized in that, The resource configuration related to the first information is indicated by the third information sent by the network device, or by the protocol.

42. The terminal device according to claim 41, characterized in that, The first information is scheduled via downlink control information (DCI), and the third information is used to indicate the resource configuration of the physical downlink control channel (PDCCH) carrying the DCI.

43. The terminal device according to claim 41 or 42, characterized in that, The third information is associated with the synchronization signal transmitted on the first carrier.

44. The terminal device according to any one of claims 38 to 43, characterized in that, The first information is valid for a predetermined period of time, which is indicated by a third information sent by the network device or by a protocol agreement.

45. The terminal device according to any one of claims 38 to 44, characterized in that, The first information includes one or more of the following: The communication scenario associated with the second carrier; Resource configuration related to the second carrier; The type of terminal device associated with the second carrier.

46. ​​The terminal device according to claim 45, characterized in that, The type of terminal device is related to the capabilities of the terminal device.

47. The terminal device according to claim 45 or 46, characterized in that, The communication scenarios include one or more of the following: Enhanced Mobile Broadband (eMBB); Ultra-Reliable Low-Latency Communication (URLLC); Internet of Things (IoT); Lightweight; Non-terrestrial network (NTN).

48. The terminal device according to any one of claims 45 to 47, characterized in that, The resource configuration associated with the second carrier includes one or more of the following: The bandwidth information of the second carrier; Information of the synchronization signal transmitted on the second carrier; The information of the payload transmitted on the second carrier.

49. The terminal device according to claim 48, characterized in that, The bandwidth information of the second carrier includes: The bandwidth of the synchronization signal transmitted on the second carrier; and / or, The bandwidth of the system information transmitted on the second carrier.

50. The terminal device according to claim 48 or 49, characterized in that, The information of the synchronization signal transmitted on the second carrier includes one or more of the following: The frequency position of the synchronization signal transmitted on the second carrier; The subcarrier spacing of the synchronization signal transmitted on the second carrier; The period of the synchronization signal transmitted on the second carrier; The beam direction corresponding to the synchronization signal transmitted on the second carrier; The bandwidth of the synchronization signal transmitted on the second carrier; The pattern of the synchronization signal transmitted on the second carrier.

51. The terminal device according to any one of claims 48 to 50, characterized in that, The information of the payload transmitted on the second carrier includes: The frequency position of the payload transmitted on the second carrier; and / or, The subcarrier spacing of the payload transmitted on the second carrier.

52. The terminal device according to any one of claims 38 to 51, characterized in that, The first information includes one or more of the following: The first indication information is used to indicate the type of terminal equipment that is allowed and / or prohibited from camping or accessing the cell via the second carrier; The second indication information is used to indicate whether the second carrier supports on-demand transmission signals; Resource configuration related to the on-demand transmission of signals; Resource configuration for the request message used by the terminal device to request the on-demand transmitted signal; The on-demand transmitted signals include on-demand transmitted system information and / or on-demand transmitted synchronization signals.

53. The terminal device according to any one of claims 38 to 52, characterized in that, It also includes a processing unit, The processing unit is configured to determine, from the plurality of second carriers, the carrier currently performing camping and / or cell access based on one or more of the following: The strength of the synchronization signal of the plurality of second carriers; The communication scenarios associated with the multiple second carriers; The types of terminal devices associated with the multiple second carriers.

54. The terminal device according to any one of claims 38 to 53, characterized in that, The bandwidth of the second carrier is greater than the bandwidth of the first carrier.

55. The terminal device according to any one of claims 38 to 54, characterized in that, The synchronization signal transmitted on the second carrier includes cell-defined synchronization signals and / or non-cell-defined synchronization signals; and / or, The synchronization signal transmitted on the third carrier may include or exclude synchronization signals not defined by the cell.

56. The terminal device according to any one of claims 38 to 55, characterized in that, The terminal device is in the Radio Resource Control (RRC) connected state, and the carriers that the terminal device is allowed to stay on include the second carrier and the third carrier; and / or, the terminal device is in the RRC idle state, and the carriers that the terminal device is allowed to stay on include the second carrier.

57. A network device, characterized in that, include: A transceiver unit is configured to transmit first information to a terminal device on a first carrier, the first information being used to determine one or more second carriers, the second carriers being associated with a cell, and the second carriers being used for the terminal device to camp and / or access the cell.

58. The network device according to claim 57, characterized in that, The second carrier is also used for data transmission between the terminal device and the network device.

59. The network device according to claim 57 or 58, characterized in that, The transceiver unit is also used for: On the second carrier, a second message is sent to the terminal device, the second message being used to instruct the terminal device to transmit data with the network device on the third carrier.

60. The network device according to any one of claims 57 to 59, characterized in that, The resource configuration related to the first information is indicated by the third information sent by the network device, or by the protocol.

61. The network device according to claim 60, characterized in that, The first information is scheduled via downlink control information (DCI), and the third information is used to indicate the resource configuration of the physical downlink control channel (PDCCH) carrying the DCI.

62. The network device according to claim 60 or 61, characterized in that, The third information is associated with the synchronization signal transmitted on the first carrier.

63. The network device according to any one of claims 57 to 62, characterized in that, The first information is valid for a predetermined period of time, which is indicated by a third information sent by the network device or by a protocol agreement.

64. The network device according to any one of claims 59 to 63, characterized in that, The first information includes one or more of the following: The communication scenario associated with the second carrier; Resource configuration related to the second carrier; The type of terminal device associated with the second carrier.

65. The network device according to claim 64, characterized in that, The type of terminal device is related to the capabilities of the terminal device.

66. The network device according to claim 64 or 65, characterized in that, The communication scenarios include one or more of the following: Enhanced Mobile Broadband (eMBB); Ultra-Reliable Low-Latency Communication (URLLC); Internet of Things (IoT); Lightweight; Non-terrestrial network (NTN).

67. The network device according to any one of claims 64 to 66, characterized in that, The resource configuration associated with the second carrier includes one or more of the following: The bandwidth information of the second carrier; Information of the synchronization signal transmitted on the second carrier; The information of the payload transmitted on the second carrier.

68. The network device according to claim 67, characterized in that, The bandwidth information of the second carrier includes: The bandwidth of the synchronization signal transmitted on the second carrier; and / or, The bandwidth of the system information transmitted on the second carrier.

69. The network device according to claim 67 or 68, characterized in that, The information of the synchronization signal transmitted on the second carrier includes one or more of the following: The frequency position of the synchronization signal transmitted on the second carrier; The subcarrier spacing of the synchronization signal transmitted on the second carrier; The period of the synchronization signal transmitted on the second carrier; The beam direction corresponding to the synchronization signal transmitted on the second carrier; The bandwidth of the synchronization signal transmitted on the second carrier; The pattern of the synchronization signal transmitted on the second carrier.

70. The network device according to any one of claims 67 to 69, characterized in that, The information of the payload transmitted on the second carrier includes: The frequency position of the payload transmitted on the second carrier; and / or, The subcarrier spacing of the payload transmitted on the second carrier.

71. The network device according to any one of claims 57 to 70, characterized in that, The first information includes one or more of the following: The first indication information is used to indicate the type of terminal equipment that is allowed and / or prohibited from camping or accessing the cell via the second carrier; The second indication information is used to indicate whether the second carrier supports on-demand transmission signals; Resource configuration related to the on-demand transmission of signals; Resource configuration for the request message used by the terminal device to request the on-demand transmitted signal; The on-demand transmitted signals include on-demand transmitted system information and / or on-demand transmitted synchronization signals.

72. The network device according to any one of claims 57 to 71, characterized in that, The bandwidth of the second carrier is greater than the bandwidth of the first carrier.

73. The network device according to any one of claims 57 to 72, characterized in that, The synchronization signal transmitted on the second carrier includes cell-defined synchronization signals and / or non-cell-defined synchronization signals; and / or, The synchronization signal transmitted on the third carrier may include or exclude synchronization signals not defined by the cell.

74. The network device according to any one of claims 57 to 73, characterized in that, The terminal device is in the Radio Resource Control (RRC) connected state, and the carriers that the terminal device is allowed to stay on include the second carrier and the third carrier; and / or, the terminal device is in the RRC idle state, and the carriers that the terminal device is allowed to stay on include the second carrier.

75. A terminal device, characterized in that, The device includes a transceiver, a memory, and a processor. The memory stores a program, and the processor invokes the program in the memory and controls the transceiver to receive or send signals so that the terminal device performs the method according to any one of claims 1 to 19.

76. A network device, characterized in that, The device includes a transceiver, a memory, and a processor. The memory stores a program, and the processor invokes the program in the memory and controls the transceiver to receive or transmit signals so that the network device performs the method according to any one of claims 20 to 37.

77. An apparatus, characterized in that, Includes a processor for calling a program from memory to cause the apparatus to perform the method according to any one of claims 1 to 37.

78. A chip, characterized in that, Includes a processor for calling a program from memory, causing a device on which the chip is mounted to perform the method according to any one of claims 1 to 37.

79. A computer-readable storage medium, characterized in that, It contains a program that causes a computer to perform the method according to any one of claims 1 to 37.

80. A computer program product, characterized in that, Includes a program that causes a computer to perform the method according to any one of claims 1 to 37.

81. A computer program, characterized in that, The computer program causes the computer to perform the method according to any one of claims 1 to 37.

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