A signal sending, receiving method and device

Abstract

This application relates to a signal transmission and reception method and apparatus. A terminal device receives configuration information for at least one SUL carrier from a network device, wherein the configuration information for the first SUL carrier includes indication information and a first RSRP threshold. The terminal device determines an uplink carrier based on at least one indication information, a measured RSRP, and at least one RSRP threshold. The uplink carrier is one of at least one SUL carrier or a NUL carrier. The terminal device transmits an uplink signal to the network device on the uplink carrier. Embodiments of this application provide a method for determining the uplink carrier. Regardless of whether the frequency of the SUL carrier is lower or higher than the frequency of the NUL carrier, the UE can determine the uplink carrier using the method provided in this application, thereby improving the success rate of the UE in determining the uplink carrier and enabling the UE to transmit uplink signals normally on the determined uplink carrier.

Description

Technical Field

[0001] This application relates to the field of mobile communication technology, and in particular to a signal transmission and reception method and apparatus. Background Technology

[0002] Currently, to improve coverage performance, especially uplink coverage performance, new radio (NR) cells can be configured with an additional supplementary uplink (SUL) carrier in addition to a normal uplink (NUL) carrier. The SUL carrier's frequency is lower than that of the NUL carrier, which effectively improves NR's uplink coverage performance. For NR cells configured with an SUL carrier, random access resources are configured on both the initial access bandwidth (BWP) of the NUL and SUL carriers. User equipment (UE) can select one uplink carrier from the NUL and SUL carriers to initiate random access based on the reference signal received power (RSRP) threshold included in the system message.

[0003] However, currently, the UE's understanding of the RSRP threshold is based on the premise that the frequency of the SUL carrier is lower than that of the NUL carrier. If the frequency of the SUL carrier is higher than that of the NUL carrier, the UE cannot select an uplink carrier, which prevents the UE from initiating random access. Summary of the Invention

[0004] This application provides a signal transmission and reception method and apparatus for providing a UE with a way to determine the uplink carrier.

[0005] Firstly, a first signal transmission method is provided. A terminal device receives configuration information for at least one SUL carrier from a network device, wherein the configuration information for a first SUL carrier includes indication information and a first RSRP threshold, and the first SUL carrier is any one of the at least one SUL carriers. The terminal device determines an uplink carrier based on at least one indication information, a measured RSRP, and at least one RSRP threshold. The uplink carrier is one of the at least one SUL carriers, or a NUL carrier, wherein if the indication information corresponding to the first SUL carrier indicates a first state, and the measured RSRP is greater than the first RSRP threshold, then the uplink carrier is the first SUL carrier. The terminal device transmits an uplink signal to the network device on the uplink carrier.

[0006] In this embodiment, the network device can indicate a state through indication information, and the state can also be regarded as a selection rule. For example, the first state corresponds to a selection rule. If the indication information corresponding to the first SUL carrier indicates the first state, then if the measured RSRP is greater than the RSRP threshold corresponding to the first SUL carrier, the terminal device can select the first SUL carrier; otherwise, the terminal device will not select the first SUL carrier. In other words, this embodiment provides a method for determining the uplink carrier. Regardless of whether the frequency of the SUL carrier is less than or greater than the frequency of the NUL carrier, the UE can determine the uplink carrier according to the method provided in this embodiment, thereby improving the flexibility of SUL carrier configuration and the success rate of the UE in determining the uplink carrier, enabling the UE to transmit uplink signals normally on the determined uplink carrier.

[0007] In one optional implementation, if the measured RSRP is less than the first RSRP threshold when the indication information corresponding to the first SUL carrier indicates a second state, then the uplink carrier is the first SUL carrier.

[0008] The first state and the second state can also be viewed as two rules. If the indication information of a SUL carrier indicates the first state, the rule corresponding to the first state is applied to that SUL carrier. That is, if the measured RSRP is greater than the RSRP threshold corresponding to the SUL carrier, the terminal device can select the SUL carrier; otherwise, the terminal device will not select the SUL carrier. Conversely, if the indication information of a SUL carrier indicates the second state, the rule corresponding to the second state is applied to that SUL carrier. That is, if the measured RSRP is less than the RSRP threshold corresponding to the SUL carrier, the terminal device can select the SUL carrier; otherwise, the terminal device will not select the SUL carrier. Therefore, regardless of whether the frequency of the SUL carrier is less than or greater than the frequency of the NUL carrier, the UE can determine the uplink carrier according to the method provided in this application embodiment.

[0009] In one optional implementation, the configuration information of the first SUL carrier further includes the priority information of the first SUL carrier.

[0010] The configuration information of a SUL carrier may also include the priority information of the SUL carrier, so that when the terminal device determines the uplink carrier, it can determine it according to the priority of each SUL carrier. For example, it can try to determine the SUL carrier with higher priority as the uplink carrier, so that the signal quality of the uplink carrier selected by the terminal device is better.

[0011] In one optional implementation, the terminal device determines the uplink carrier based on at least one indication information, a measured RSRP, and at least one RSRP threshold. This can be achieved by comparing the measured RSRP with the first RSRP threshold in descending order of priority of the at least one SUL carrier. If the indication information corresponding to the first SUL carrier indicates a first state, and the measured RSRP is greater than the first RSRP threshold, the terminal device determines the first SUL carrier as the uplink carrier; or, if the indication information corresponding to the first SUL carrier indicates a second state, and the measured RSRP is less than the first RSRP threshold, the terminal device determines the first SUL carrier as the uplink carrier.

[0012] In one optional implementation, when the indication information corresponding to the first SUL carrier indicates the first state, if the measured RSRP is less than or equal to the first RSRP threshold, the terminal device compares the measured RSRP with a second RSRP threshold; or, when the indication information corresponding to the first SUL carrier indicates the second state, if the measured RSRP is greater than or equal to the first RSRP threshold, the terminal device compares the measured RSRP with the second RSRP threshold; wherein the second RSRP threshold is a threshold corresponding to the second SUL carrier among the at least one SUL carrier, and the priority of the first SUL carrier is higher than the priority of the second SUL carrier. When the indication information corresponding to the second SUL carrier indicates the first state, if the measured RSRP is greater than the second RSRP threshold, the terminal device determines the second SUL carrier as the uplink carrier; or, when the indication information corresponding to the second SUL carrier indicates the second state, and the measured RSRP is less than the second RSRP threshold, the terminal device determines the second SUL carrier as the uplink carrier.

[0013] When comparing the measured RSRP with at least one RSRP threshold, the terminal device can compare it sequentially with the at least one RSRP threshold in descending order of priority. After comparing an RSRP threshold, if the terminal device determines that the measured RSRP does not satisfy the relationship between the RSRP threshold, the measured RSRP, and the state indicated by the indication information, or in other words, the terminal device cannot select an uplink carrier after comparing an RSRP threshold, the terminal device can continue to compare the measured RSRP with the RSRP threshold corresponding to the next priority SUL carrier in descending order of priority. If, after comparing an RSRP threshold, the terminal device determines that the measured RSRP satisfies the relationship between the RSRP threshold, the measured RSRP, and the state indicated by the indication information, or in other words, the terminal device determines that it can select an uplink carrier after comparing an RSRP threshold, then the terminal device can determine the uplink carrier without performing the remaining comparison process. This method improves the efficiency of the terminal device in determining the uplink carrier, and because it reduces the comparison process, it saves the terminal device's power consumption. In addition, the terminal device may determine a higher-priority SUL carrier, which can also improve the signal quality of the uplink carrier determined by the terminal device.

[0014] In an optional implementation, if the measured RSRP does not satisfy some or all of the relationships in at least one relation, the uplink carrier is the NUL carrier, wherein one of the at least one relations is the relationship between the state indicated by the indication information corresponding to a SUL carrier, the RSRP threshold corresponding to the SUL carrier, and the measured RSRP.

[0015] For example, if for each RSRP threshold included in at least one RSRP threshold, the measured RSRP does not satisfy the relationship between the RSRP threshold, the measured RSRP, and the state indicated by the indication information; that is, for at least one SUL carrier, the terminal device determines that it cannot be selected, then the terminal device can determine the NUL carrier as the uplink carrier. In other words, the terminal device can select the NUL carrier when it is determined that all SUL carriers do not meet the conditions, thus ensuring that the selected uplink carrier is as close to an SUL carrier as possible to improve uplink coverage performance. Alternatively, if for each RSRP threshold included in at least one RSRP threshold, the measured RSRP does not satisfy the relationship between the RSRP threshold, the measured RSRP, and the state indicated by the indication information, then the terminal device can determine the NUL carrier as the uplink carrier. In this case, the terminal device can select the NUL carrier even when it is determined that some SUL carriers do not meet the conditions, reducing the comparison process of the terminal device and saving power consumption.

[0016] Secondly, a signal receiving method is provided. Configuration information for at least one supplementary uplink SUL carrier is sent to a terminal device. This configuration information is used to determine an uplink carrier. The configuration information for a first SUL carrier within the configuration information includes indication information and a first reference signal received power (RSRP) threshold. The first SUL carrier is any one of the at least one SUL carriers. An uplink signal from the terminal device is received on the uplink carrier. If, when the indication information corresponding to the first SUL carrier indicates a first state, the RSRP measured by the terminal device is greater than the first RSRP threshold, then the uplink carrier is the first SUL carrier.

[0017] In one optional implementation, if the measured RSRP is less than the RSRP threshold corresponding to the first SUL carrier when the indication information corresponding to the first SUL carrier indicates a second state, then the uplink carrier is the first SUL carrier.

[0018] In one optional implementation, the configuration information of the first SUL carrier further includes the priority information of the first SUL carrier.

[0019] In an optional implementation, if the measured RSRP does not satisfy some or all of the relationships in at least one relation, the uplink carrier is the NUL carrier, wherein one of the at least one relations is the relationship between the state indicated by the indication information corresponding to a SUL carrier, the RSRP threshold corresponding to the SUL carrier, and the measured RSRP.

[0020] For the technical effects of the second aspect or corresponding implementation method, please refer to the introduction of the technical effects of the first aspect or corresponding implementation method.

[0021] Thirdly, a second signal transmission method is provided. A terminal device determines the frequency of at least one SUL carrier and the frequency of a NUL carrier. The terminal device determines an uplink carrier based on the frequency of the at least one SUL carrier, the frequency of the NUL carrier, a measured RSRP, and at least one RSRP threshold, wherein the uplink carrier is one of the at least one SUL carrier or the NUL carrier, and the at least one RSRP threshold is received by the terminal device from a network device and corresponds to the at least one SUL carrier. The terminal device transmits an uplink signal to the network device on the uplink carrier.

[0022] In this embodiment, the network device does not need to indicate selection rules; the terminal device can determine the selection rules based on the frequencies of the SUL carrier and the NUL carrier, thereby selecting the uplink carrier. In other words, this embodiment provides a method for determining the uplink carrier. Regardless of whether the frequency of the SUL carrier is lower or higher than the frequency of the NUL carrier, the terminal device can determine the uplink carrier using the method provided in this embodiment, thus improving the success rate of uplink carrier determination and enabling the terminal device to transmit uplink signals normally on the determined uplink carrier. Furthermore, since the network device does not need to indicate selection rules, signaling overhead is also saved.

[0023] In one optional implementation, the terminal device determines the uplink carrier based on the frequency of the at least one SUL carrier, the frequency of the NUL carrier, the measured RSRP, and the RSRP threshold. This can be achieved as follows: if the frequency of the first SUL carrier among the at least one SUL carrier is greater than the frequency of the NUL carrier, and if the measured RSRP is greater than the RSRP threshold corresponding to the first SUL carrier, then the uplink carrier determined by the terminal device is the first SUL carrier.

[0024] In one optional implementation, the terminal device determines the uplink carrier based on the frequency of the at least one SUL carrier, the frequency of the NUL carrier, the measured RSRP, and the RSRP threshold. This can be achieved as follows: if the frequency of the first SUL carrier among the at least one SUL carrier is less than the frequency of the NUL carrier, and if the measured RSRP is less than the RSRP threshold corresponding to the first SUL carrier, then the uplink carrier determined by the terminal device is the first SUL carrier.

[0025] It can be assumed that the terminal device anticipates two rules. If the frequency of a SUL carrier is greater than the frequency of a NUL carrier, one rule is applied to that SUL carrier: if the measured RSRP is greater than the corresponding RSRP threshold, the terminal device can select that SUL carrier; otherwise, the terminal device will not select that SUL carrier. Conversely, if the frequency of a SUL carrier is less than the frequency of a NUL carrier, the other rule is applied: if the measured RSRP is less than the corresponding RSRP threshold, the terminal device can select that SUL carrier; otherwise, the terminal device will not select that SUL carrier. Therefore, regardless of whether the frequency of the SUL carrier is less than or greater than the frequency of the NUL carrier, the UE can determine the uplink carrier according to the method provided in this application.

[0026] In an alternative implementation, the terminal device further receives first information from the network device, the first information being used to indicate the priority of the at least one SUL carrier.

[0027] In one optional implementation, the terminal device determines the uplink carrier based on the frequency of the at least one SUL carrier, the frequency of the NUL carrier, the measured RSRP, and at least one RSRP threshold. This can be achieved by the terminal device comparing the measured RSRP with the first RSRP threshold in descending order of priority of the at least one SUL carrier. If the frequency of the first SUL carrier is greater than the frequency of the NUL carrier, and the measured RSRP is greater than the RSRP threshold corresponding to the first SUL carrier, the terminal device determines the first SUL carrier as the uplink carrier; or, if the frequency of the first SUL carrier is less than the frequency of the NUL carrier, and the measured RSRP is less than the RSRP threshold corresponding to the first SUL carrier, the terminal device determines the first SUL carrier as the uplink carrier.

[0028] In one optional implementation, if the frequency of the first SUL carrier is greater than the frequency of the NUL carrier, and the measured RSRP is less than or equal to the RSRP threshold corresponding to the first SUL carrier, the terminal device compares the measured RSRP with a second RSRP threshold; or, if the frequency of the first SUL carrier is less than the frequency of the NUL carrier, and the measured RSRP is greater than or equal to the RSRP threshold corresponding to the first SUL carrier, the terminal device compares the measured RSRP with a second RSRP threshold; wherein the second RSRP threshold is a threshold corresponding to the second SUL carrier among the at least one SUL carrier, and the first SUL carrier has a higher priority than the second SUL carrier. If the frequency of the second SUL carrier is greater than the frequency of the NUL carrier, and the measured RSRP is greater than the RSRP threshold corresponding to the second SUL carrier, the terminal device determines the second SUL carrier as the uplink carrier; or, if the frequency of the second SUL carrier is less than the frequency of the NUL carrier, and the measured RSRP is less than the RSRP threshold corresponding to the second SUL carrier, the terminal device determines the second SUL carrier as the uplink carrier.

[0029] In an optional implementation, if the measured RSRP does not satisfy some or all of the relationships in at least one relation, the uplink carrier is the NUL carrier, wherein one of the at least one relations is the relationship between the frequency of a SUL carrier, the frequency of the NUL carrier, the RSRP threshold corresponding to the SUL carrier, and the measured RSRP.

[0030] For the technical effects of the corresponding implementation of the third aspect, please refer to the introduction of the technical effects of the first aspect or the corresponding implementation.

[0031] Fourthly, a communication device is provided. This communication device may be a terminal device as described in any of the first to third aspects above, an electronic device configured in the terminal device, or a larger device including the terminal device. The terminal device includes corresponding means or modules for performing the above-described methods. For example, the communication device includes a processing unit (sometimes also called a processing module) and a transceiver unit (sometimes also called a transceiver module).

[0032] The processing unit is configured to receive configuration information of at least one SUL carrier from a network device through the transceiver unit, determine an uplink carrier based on at least one indication information, a measured RSRP and at least one RSRP threshold, and also to transmit an uplink signal to the network device on the uplink carrier through the transceiver unit.

[0033] Alternatively, the processing unit is configured to determine the frequency of at least one SUL carrier and the frequency of an NUL carrier, determine an uplink carrier based on the frequency of the at least one SUL carrier, the frequency of the NUL carrier, a measured RSRP, and at least one RSRP threshold, and transmit an uplink signal to the network device on the uplink carrier via the transceiver unit.

[0034] For example, the communication device includes a processor coupled to a memory for executing instructions in the memory to implement the method performed by the terminal device in any of the first to third aspects described above. Optionally, the communication device may also include other components, such as an antenna, input / output modules, interfaces, etc. These components may be hardware, software, or a combination of software and hardware.

[0035] Fifthly, a communication device is provided. The communication device can be a network device as described in any of the first to third aspects above. The communication device possesses the functions of the aforementioned network device. The network device is, for example, a base station, or a baseband device within a base station. In one optional implementation, the communication device includes a baseband device and a radio frequency device. In another optional implementation, the communication device includes a processing unit (sometimes also called a processing module) and a transceiver unit (sometimes also called a transceiver module).

[0036] The processing unit is configured to send configuration information of at least one supplementary uplink SUL carrier to the terminal device through the transceiver unit, and the processing unit is also configured to receive uplink signals from the terminal device on the uplink carrier.

[0037] In another optional implementation, the communication device includes a storage unit and a processing unit, wherein the processing unit is coupled to the storage unit and executes programs or instructions in the storage unit to enable the communication device to perform the functions of the aforementioned network device.

[0038] In a sixth aspect, a computer-readable storage medium is provided for storing a computer program or instructions that, when executed, cause the methods performed by the terminal device or network device in the above aspects to be implemented.

[0039] In a seventh aspect, a computer program product containing instructions is provided, which, when run on a computer, enables the methods described in the above aspects to be implemented. Attached Figure Description

[0040] Figure 1 This is a schematic diagram illustrating a scenario where a single cell is configured with a single SUL carrier.

[0041] Figure 2 This is a schematic diagram illustrating an application scenario according to an embodiment of this application;

[0042] Figure 3 A flowchart illustrating the first signal transmission and reception method provided in this application embodiment;

[0043] Figure 4 This is a schematic diagram illustrating how configuration information is included in supplementary uplink parameters and sent in an embodiment of this application;

[0044] Figure 5 This is a schematic diagram illustrating that the configuration information in this embodiment also includes priority information;

[0045] Figure 6 This is a schematic diagram illustrating a scenario where multiple SUL carriers are configured in a single cell, as described in this application embodiment.

[0046] Figure 7 A flowchart illustrating the second signal transmission and reception method provided in this application embodiment;

[0047] Figure 8 A schematic block diagram of a communication device provided in an embodiment of this application;

[0048] Figure 9 A schematic block diagram of a terminal device provided in an embodiment of this application;

[0049] Figure 10 This is a schematic block diagram of a network device provided in an embodiment of this application. Detailed Implementation

[0050] The technology provided in this application can be applied to communication systems, where communication devices (e.g., terminal devices) connect to one or more core network (CN) devices via one or more access network (AN) devices to enable communication between multiple communication devices. The communication system may, for example, support 2G, 3G, 4G, or 5G (sometimes also called NR) access technologies, wireless fidelity (WiFi) systems, 3GPP-related cellular systems, communication systems supporting the convergence of multiple wireless technologies, or future-oriented evolution systems.

[0051] The following explanations of some terms used in the embodiments of this application are provided to facilitate understanding by those skilled in the art.

[0052] In this embodiment, the terminal device is a device with wireless transceiver capabilities, which can be a fixed device, mobile device, handheld device, wearable device, vehicle-mounted device, or a wireless device (e.g., a communication module or chip system) built into the aforementioned devices. The terminal device is used to connect people, objects, machines, etc., and can be widely used in various scenarios, including but not limited to the following: cellular communication, device-to-device (D2D) communication, vehicle-to-everything (V2X) communication, machine-to-machine / machine-type communication (M2M / MTC) communication, Internet of Things (IoT), virtual reality (VR), augmented reality (AR), industrial control, self-driving, remote medical care, smart grid, smart furniture, smart office, smart wearables, smart transportation, smart city, drones, robots, and other scenarios. The terminal device may sometimes be referred to as user equipment (UE), terminal, access station, UE station, remote station, wireless communication equipment, or user device, etc. For ease of description, the terminal device in this application embodiment will be described using UE as an example.

[0053] In this application embodiment, the device for implementing the UE's function can be the UE itself, or it can be a device capable of supporting the UE in implementing that function, such as a chip system, which can be installed in the UE. In the technical solutions provided in this application embodiment, the UE is used as an example to describe the technical solutions provided in this application embodiment.

[0054] The network devices in this application embodiment include, for example, access network devices and / or core network devices. The access network device is a device with wireless transceiver capabilities, used to communicate with the terminal device. The access network device includes, but is not limited to, base stations (BTS, Node B, eNodeB / eNB, or gNodeB / gNB), transmission reception points (TRPs), 3GPP subsequent evolution base stations, access nodes, wireless relay nodes, and wireless backhaul nodes in WiFi systems. The base station can be: macro base station, micro base station, pico base station, small cell, relay station, etc. Multiple base stations can support networks using the same access technology mentioned above, or they can support networks using different access technologies mentioned above. A base station can contain one or more co-located or non-co-located transmission and reception points. The network device can also be a radio controller, centralized unit (CU), and / or distributed unit (DU) in a cloud radio access network (CRAN) scenario. The network device can also be a server, wearable device, or vehicle-mounted device, etc. For example, network devices in V2X technology can be roadside units (RSUs). The following description of access network devices uses a base station as an example. Multiple network devices in the communication system can be base stations of the same type or different types. A base station can communicate with a UE, or it can communicate with a UE through a relay station. A UE can communicate with multiple base stations in different access technologies. The core network devices are used to implement functions such as mobility management, data processing, session management, policy and charging. The names of the devices implementing core network functions may differ in systems using different access technologies; this application does not limit this. Taking a 5G system as an example, the core network devices include: access and mobility management function (AMF), session management function (SMF), or user plane function (UPF), etc.

[0055] In this application embodiment, the device for implementing the function of the network device can be the network device itself, or it can be a device capable of supporting the network device in implementing that function, such as a chip system, which can be installed in the network device. In the technical solutions provided in this application embodiment, the example of a network device being used to implement the function of the network device is used to describe the technical solutions provided in this application embodiment.

[0056] In this application, the number of nouns, unless otherwise specified, refers to "singular nouns or plural nouns," i.e., "one or more." "At least one" means one or more, and "more than one" means two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can mean: A alone, A and B simultaneously, or B alone, where A and B can be singular or plural. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. For example, A / B means: A or B. "At least one of the following" or similar expressions refer to any combination of these items, including any combination of singular or plural items. For example, at least one of a, b, or c means: a, b, c, a and b, a and c, b and c, or a and b and c, where a, b, and c can be single or multiple.

[0057] Furthermore, unless otherwise stated, the ordinal numbers such as "first" and "second" mentioned in the embodiments of this application are used to distinguish multiple objects and are not used to limit the size, content, order, timing, priority, or importance of multiple objects. For example, the first SUL carrier and the second SUL carrier can be the same SUL carrier or different SUL carriers, and such names do not indicate that the two SUL carriers are different in frequency, priority, or importance.

[0058] Compared to Long Term Evolution (LTE) and Long Term Evolution Advanced (LTE-A) wireless communication systems, 5G NR wireless communication systems are deployed at higher frequency bands to obtain greater communication bandwidth. However, higher frequency bands lead to greater path loss and penetration loss, making NR's coverage performance far inferior to LTE and LTE-A.

[0059] Currently, to improve coverage performance, especially the uplink coverage performance, in addition to configuring a NUL carrier, an NR cell can also be additionally configured with a SUL carrier, and the frequency of the SUL carrier is lower than that of the NUL carrier, which can effectively improve the uplink coverage performance of NR. For an NR cell configured with a SUL carrier, random access resources are configured on the initial access BWP of both the NUL carrier and the SUL carrier. The UE can select an uplink carrier from the NUL carrier and the SUL carrier to initiate random access according to the RSRP threshold in the system message.

[0060] As Figure 1 shown, it is a scenario where a single cell is configured with a SUL carrier and the frequency of the SUL carrier is lower than that of the NUL carrier. Before initiating random access, the UE first measures the synchronization signal block (SSB) or the channel state information reference signal (CSI-RS) to obtain the RSRP, and then the UE compares this RSRP with the RSRP threshold (rsrp-ThresholdSSB-SUL) in the system message. If this RSRP is less than the RSRP threshold (RSRP < rsrp-ThresholdSSB-SUL), the UE selects the random access resources on the SUL carrier to send the preamble; otherwise, the UE selects the random access resources on the NUL carrier to send the preamble. For example Figure 1 in, if the UE is located in the left elliptical area, the distance between the UE and the base station is relatively close, and the RSRP measured by the UE may be greater than or equal to the RSRP threshold; while if the UE is located in the right elliptical area, the distance between the UE and the base station is relatively far, for example, the UE may be at the cell edge, and the RSRP measured by the UE may be less than the RSRP threshold.

[0061] It can be seen that currently the UE's understanding of the RSRP threshold is based on the fact that the frequency of the SUL carrier is lower than that of the NUL carrier. If the frequency of the SUL carrier is higher than that of the NUL carrier, the UE cannot select an uplink carrier, resulting in the UE being unable to initiate random access.

[0062] Therefore, the technical solution of this application embodiment is provided. In this application embodiment, the network device can indicate the state through indication information, and the state can also be regarded as a selection rule. For example, the first state corresponds to a selection rule. If the indication information corresponding to the first SUL carrier indicates the first state, then if the measured RSRP is greater than the RSRP threshold corresponding to the first SUL carrier, the UE can select the first SUL carrier; otherwise, the UE will not select the first SUL carrier. That is to say, this application embodiment provides a method for determining the uplink carrier. Regardless of whether the frequency of the SUL carrier is less than or greater than the frequency of the NUL carrier, according to the method provided in this application embodiment, the UE can determine the uplink carrier, thereby improving the flexibility of SUL carrier configuration and the success rate of the UE in determining the uplink carrier, enabling the UE to normally transmit uplink signals on the determined uplink carrier.

[0063] The technical solutions provided in this application can be applied to 4G systems, such as LTE systems, or to 5G systems, such as NR systems, or to next-generation mobile communication systems or other similar communication systems, without specific limitations. Furthermore, the technical solutions provided in this application can be applied to device-to-device (D2D) scenarios, such as NR-D2D scenarios, or to vehicle-to-everything (V2X) scenarios, such as NR-V2X scenarios. For example, they can be applied to vehicle-to-everything (V2X) networks, vehicle-to-vehicle (V2V) networks, or to fields such as intelligent driving, assisted driving, or intelligent connected vehicles. In the following description, the application of the technical solutions provided in this application to LTE or NR systems will be used as an example.

[0064] Please see Figure 2 This is one application scenario of an embodiment of this application. Figure 2 This includes access network equipment, core network equipment, and UE. Figure 2 Taking a single UE as an example, there may actually be multiple UEs. The UE is configured with an NUL carrier and at least one SUL carrier. The UE can select an uplink carrier from at least one SUL carrier and the NUL carrier, and then transmit an uplink signal on the uplink carrier. The access network equipment receives the uplink signal.

[0065] The access network device operates, for example, in an evolved UMTS terrestrial radio access (E-UTRA) system, an NR system, a next-generation communication system, or another communication system. This access network device is, for example, a base station. The access network device corresponds to different devices in different systems; for example, in a 4G system it may correspond to an eNB, and in a 5G system it may correspond to a 5G access network device, such as a gNB. Of course, the technical solutions provided in this application embodiment can also be applied to future mobile communication systems. Figure 2 The access network equipment in this context can also correspond to the network equipment in future mobile communication systems. Figure 2 Taking a base station as an example of access network equipment, as mentioned earlier, access network equipment can also include devices such as RSUs (Remote Units). Furthermore, Figure 2 The UE in this application is a mobile phone, but as can be seen from the previous introduction of the UE, the UE in this application is not limited to mobile phones.

[0066] The method provided by the embodiments of this application is described below with reference to the accompanying drawings. In the drawings corresponding to the various embodiments of this application, all steps indicated by dashed lines are optional steps. In the various embodiments of this application, the UE can be configured with one NUL carrier and at least one SUL carrier (or one or more SUL carriers). If the number of at least one SUL carrier is 1, then the frequency of the SUL carrier can be greater than the frequency of the NUL carrier, or the frequency of the SUL carrier can be less than the frequency of the NUL carrier. If the number of at least one SUL carrier is greater than 1, then the frequencies of all SUL carriers in the at least one SUL carrier can be greater than the frequency of the NUL carrier, or the frequencies of all SUL carriers in the at least one SUL carrier can be less than the frequency of the NUL carrier, or the frequencies of some SUL carriers in the at least one SUL carrier are greater than the frequency of the NUL carrier, and the frequencies of the remaining SUL carriers are less than the frequency of the SUL carrier.

[0067] This application provides a first method for transmitting and receiving signals; please refer to [link to relevant documentation]. Figure 3 Here is a flowchart of the method. In the following description, this method will be applied to... Figure 2 The network architecture shown is an example.

[0068] For ease of explanation, the following description will use the example of this method being executed by a network device and a UE. This is because the embodiments of this application are based on applications in… Figure 2 The network architecture shown is an example. Therefore, the network devices described below are, for example, [examples of network devices]. Figure 2 In the network architecture shown, the access network device, referred to below as the UE, can be... Figure 2 The UE in the network architecture shown.

[0069] S31. The network device sends configuration information for at least one SUL carrier, and correspondingly, the UE receives the configuration information for at least one SUL carrier from the network device. The configuration information for at least one SUL carrier can be used to determine the uplink carrier. Specifically, the network device can send the configuration information for at least one SUL carrier via unicast, in which case the UE can receive the configuration information for at least one SUL carrier; alternatively, the network device may also send the configuration information for at least one SUL carrier via broadcast, in which case multiple UEs may be able to receive the configuration information for at least one SUL carrier, and the UE mentioned in S31 is one of those UEs.

[0070] Network devices can send configuration information for at least one SUL carrier, where one SUL carrier corresponds to one configuration information, or one configuration information can be used to configure one SUL carrier; that is, there is a one-to-one correspondence between configuration information and SUL carriers. For example, at least one SUL carrier includes a first SUL carrier, which may be any one of the at least one SUL carriers. The configuration information for the first SUL carrier may include indication information and a first RSRP threshold. The indication information may indicate a first state or a second state, with different states corresponding to different selection rules. The first RSRP threshold is the RSRP threshold corresponding to the first SUL carrier. In the configuration information for at least one SUL carrier, different configuration information may include corresponding indication information and corresponding RSRP thresholds. That is, the parameters included in the configuration information for at least one SUL carrier (here, the parameters include indication information and RSRP thresholds) may be the same, only the values ​​of the parameters (e.g., the state indicated by the indication information and / or the value of the RSRP threshold) may be different. For example, at least one SUL carrier may also include a second SUL carrier. The configuration information of the second SUL carrier may also include indication information and RSRP threshold. To distinguish them, the indication information included in the configuration information of the first SUL carrier is called indication information 1, and the RSRP threshold included in the configuration information of the first SUL carrier is called RSRP threshold 1. The indication information included in the configuration information of the second SUL carrier is called indication information 2, and the RSRP threshold included in the configuration information of the second SUL carrier is called RSRP threshold 2. Then RSRP threshold 1 and RSRP threshold 2 may be different. The state indicated by indication information 1 and the state indicated by indication information 2 may be the same or different. For example, both indication information 1 and indication information 2 indicate the first state or both indicate the second state. Another example is that indication information 1 indicates the first state and indication information 2 indicates the second state, or indication information 1 indicates the second state and indication information 2 indicates the first state.

[0071] For a single SUL carrier, the network device sends the corresponding supplementary uplink parameter. For example, the configuration information described in this embodiment is included in the supplementary uplink parameter corresponding to the SUL carrier. One SUL carrier corresponds to one supplementary uplink parameter. Therefore, when there are N SUL carriers in at least one SUL carrier, the network device sends N supplementary uplink parameters, which is equivalent to sending N configuration information. For example, the network device sends at least one supplementary uplink parameter through a system message, such as a system information block (SIB) message. That is, at least one configuration information, or at least one supplementary uplink parameter, can be included in one message. Thus, when there are N SUL carriers in at least one SUL carrier, the N SUL carriers correspond to only one supplementary uplink parameter message. In this case, this message includes N sub-information, which are independent of each other. One sub-information corresponds to one SUL carrier. That is, one supplementary uplink parameter corresponding to one SUL carrier can be regarded as one sub-information included in this message. For example, N supplementary uplink parameters are included in N information elements of the system message, with each information element containing one supplementary uplink parameter, so that the UE will not confuse different supplementary uplink parameters. The information element mentioned here is, for example, an information element (IE).

[0072] Network devices need to include configuration information in the supplementary uplink parameters corresponding to a SUL carrier. For example, one approach is for the network device to include this configuration information in the random access configuration parameter (RACH-ConfigCommon) within the supplementary uplink parameters. See, for example, [reference needed]. Figure 4 This diagram illustrates supplementary uplink parameters for a SUL carrier. These supplementary uplink parameters include random access configuration parameters, which contain configuration information corresponding to the SUL carrier. This configuration information includes the RSRP threshold for the SUL carrier and indication information corresponding to the SUL carrier. For example, the threshold for the SUL carrier can be represented as rsrp-ThresholdSSB-SUL, and the indication information can be represented as rsrp-ConditionSSB-SUL. Of course, network devices can also include configuration information in other parameters included in the supplementary uplink parameters, or they can add new parameters or information cells within the supplementary uplink parameters to include configuration information.

[0073] The indication information can indicate the selection rule corresponding to a SUL carrier. In the embodiments of this application, the indication information can indicate a first state or a second state, which can be understood as two selection rules. These two states are, for example:

[0074] In the first state, if the measured RSRP is greater than the RSRP threshold corresponding to the SUL carrier, then the SUL carrier is selected; otherwise, the SUL carrier is not selected.

[0075] In the second state, if the measured RSRP is less than the RSRP threshold corresponding to the SUL carrier, then the SUL carrier is selected; otherwise, the SUL carrier is not selected.

[0076] In this embodiment, if the indication information corresponding to a SUL carrier indicates a first state, it can be understood that if the RSRP measured by the UE is greater than the RSRP threshold corresponding to that SUL carrier, then the SUL carrier is selected; otherwise, it is not selected. Similarly, if the indication information corresponding to a SUL carrier indicates a second state, it can be understood that if the RSRP measured by the UE is less than the RSRP threshold corresponding to that SUL carrier, then the SUL carrier is selected; otherwise, it is not selected. Therefore, in this embodiment, the network device can indicate the corresponding selection rules, or the corresponding states, without requiring the UE to determine the selection rules for a SUL carrier itself. This reduces the workload of the UE and allows the method provided in this embodiment to be applied to more capability-limited UEs. For example, UEs with capability limitations due to reduced bandwidth, reduced antenna count, or half-duplex mode performance issues.

[0077] Generally, the higher the uplink carrier frequency, the higher the corresponding RSRP threshold. Therefore, if the frequency of a SUL carrier is greater than the frequency of a NUL carrier, the indication information corresponding to that SUL carrier will indicate the first state; while if the frequency of a SUL carrier is less than the frequency of a NUL carrier, the indication information corresponding to that SUL carrier will indicate the second state. In other words, these two states may actually be related to the frequencies of the SUL and NUL carriers, but the UE is not aware of the frequencies of the SUL and NUL carriers; it only needs to make a judgment based on the corresponding state. The UE needs to perceive relatively little information, making the implementation relatively simple.

[0078] The indication information can include the content of the indicated state. For example, if the indication information is to indicate a first state, it would include information indicating that the measured RSRP is greater than the RSRP threshold corresponding to the SUL carrier. This approach makes the indication more explicit. Alternatively, the content of the first and second states can be pre-configured in the UE or specified by the protocol, in which case the indication information does not need to include the specific state content. In this case, the indication information can include one or more bits, and different state values ​​of the one or more bits are used to indicate different states. Taking an indication information including one bit as an example, for instance, if the bit is "1", it indicates the first state; if the bit is "0", it indicates the second state. This approach can save the overhead of the indication information.

[0079] As an optional implementation, the network device may also transmit priority information for at least one SUL carrier. For example, the priority information for one SUL carrier may also be included in the configuration information of that SUL carrier. That is, the configuration information for at least one SUL carrier transmitted by the network device includes priority information for at least one SUL carrier, wherein each configuration information includes priority information, and the priority information included in each configuration information is used to indicate the priority of the SUL carrier corresponding to that configuration information. For example, if at least one SUL carrier includes a first SUL carrier, the configuration information for the first SUL carrier may include priority information for the first SUL carrier.

[0080] If priority information is included in the configuration information, and the configuration information is included in the random access configuration parameters supplemented by uplink parameters, then the priority information is effectively also included in the random access configuration parameters. Therefore, the network device can send the RSRP threshold of the SUL carrier, the indication information corresponding to the SUL carrier, and the priority information of the SUL carrier simultaneously through the supplemented uplink parameters of the SUL carrier, allowing the UE to obtain this information all at once. For example, see [reference needed]. Figure 5This diagram illustrates the supplementary uplink parameters for a SUL carrier. These supplementary uplink parameters include random access configuration parameters, which contain configuration information corresponding to the SUL carrier. This configuration information includes the RSRP threshold, indication information, and priority information for the SUL carrier. For example, the threshold for the SUL carrier can be represented as rsrp-ThresholdSSB-SUL, the indication information as rsrp-ConditionSSB-SUL, and the priority information as rsrp-PrioritySSB-SUL. Alternatively, the network device can include priority information in other parameters included in the supplementary uplink parameters, or it can add new parameters or cells within the supplementary uplink parameters to include priority information.

[0081] In this approach, a configuration information can include the priority of a SUL carrier, with different configuration information corresponding to different SUL carriers, making the indication of the priority of each SUL carrier more explicit.

[0082] Another possibility is that the priority of at least one SUL carrier can be the default or specified by the protocol, in which case the network device does not need to send priority information. Alternatively, a priority may not be set for at least one SUL carrier, in which case the network device also does not need to send priority information.

[0083] S32. The UE determines the uplink carrier based on at least one indication information, the measured RSRP, and at least one RSRP threshold. For example, the uplink carrier determined by the UE is referred to as the first uplink carrier.

[0084] The network device also sends a reference signal, which the UE can receive from the network device. This reference signal may be, for example, a synchronization signal block (SSB) or a channel state information reference signal (CSI-RS). The step of the network device sending the reference signal may occur before, after, or simultaneously with S31.

[0085] After receiving the reference signal, the UE can measure the reference signal to obtain the measured RSRP. If at least one SUL carrier does not correspond to a priority (e.g., the network device does not send at least one priority information, or there is no default priority for at least one SUL carrier, and the protocol does not specify a priority for at least one SUL carrier), the UE can determine the first uplink carrier based on at least one indication information, the measured RSRP, and at least one RSRP threshold. Alternatively, if at least one SUL carrier corresponds to a priority (e.g., the UE receives at least one priority information, or the priority of at least one SUL carrier is determined through a default method or a method specified by the protocol), the UE can determine the first uplink carrier based on at least one indication information, the measured RSRP, the priority of at least one SUL carrier, and at least one RSRP threshold.

[0086] Whether a UE can select a SUL carrier is determined by comparing the measured RSRP with the RSRP threshold of the SUL carrier. If the UE determines the first uplink carrier without considering the priority of the SUL carrier, the UE can compare the measured RSRP with some or all of the RSRP thresholds in any order and determine the first uplink carrier based on the comparison results.

[0087] For example, the UE can compare the measured RSRP with all RSRP thresholds in at least one RSRP threshold in any order. After all comparisons are completed, the first uplink carrier is determined based on all comparison results. For example, at least one SUL carrier includes SUL0, SUL1, and SUL2. SUL0 corresponds to RSRP threshold 0, SUL1 corresponds to RSRP threshold 1, and SUL2 corresponds to RSRP threshold 2. The indication information corresponding to SUL0 indicates the first state, the indication information corresponding to SUL1 indicates the second state, and the indication information corresponding to SUL2 indicates the third state. Because there is no priority, each uplink carrier should have an equal chance of being selected. Therefore, the UE can compare the measured RSRP with these three RSRP thresholds separately, and there is no restriction on the execution order during the comparison. For example, the UE compares the measured RSRP with RSRP threshold 0 to determine whether the measured RSRP is greater than RSRP threshold 0. If the measured RSRP is greater than RSRP threshold 0, the UE can select SUL0; otherwise, the UE does not select SUL0. The UE compares the measured RSRP with RSRP threshold 1 to determine if the measured RSRP is less than RSRP threshold 1. If the measured RSRP is less than RSRP threshold 1, the UE can select SUL1; otherwise, the UE does not select SUL1. The UE compares the measured RSRP with RSRP threshold 2 to determine if the measured RSRP is less than RSRP threshold 2. If the measured RSRP is less than RSRP threshold 2, the UE can select SUL2; otherwise, the UE does not select SUL2.

[0088] For example, such as Figure 6 The diagram illustrates a scenario where multiple SUL carriers are configured in a single cell. For example, multiple SUL carriers include SUL0 and SUL1, where the frequency of SUL0 is greater than the frequency of NUL, and the frequency of SUL1 is less than the frequency of NUL. The network device configures the indication information for SUL0 to indicate a first state, and the indication information configured for SUL1 to indicate a second state. Before initiating random access, the UE first measures the SSB or CSI-RS to obtain the measured RSRP. Then, the UE compares this measured RSRP with the RSRP threshold 0. If the measured RSRP is greater than the RSRP threshold 0, the UE can select SUL0 as the first uplink carrier; otherwise, the UE does not select SUL0. Additionally, the UE compares this measured RSRP with the RSRP threshold 1. If the measured RSRP is less than the RSRP threshold 1, the UE can select SUL1 as the first uplink carrier; otherwise, the UE does not select SUL1. For example, if the measured RSRP threshold is less than RSRP threshold 0 and less than RSRP threshold 1, then the UE determines SUL1 as the first uplink carrier; or, if the measured RSRP threshold is less than RSRP threshold 0 and greater than RSRP threshold 1, then the UE determines NUL as the first uplink carrier.

[0089] For example Figure 6 If the UE is located in the elliptical area on the left, the distance between the UE and the base station is relatively close, and the measured RSRP of the UE may be greater than the RSRP threshold 0. If the UE is located in the elliptical area in the middle, the distance between the UE and the base station is moderate, and the measured RSRP of the UE may be greater than the RSRP threshold 0 and less than the RSRP threshold 1. If the UE is located in the elliptical area on the right, the distance between the UE and the base station is relatively far. For example, the UE may be located at the cell edge, and the measured RSRP of the UE may be less than the RSRP threshold 1.

[0090] If the RSRP measured by the UE only satisfies the selection rule of one of the SUL carriers, then the UE can determine that SUL carrier as the first uplink carrier. For example, at least one SUL carrier includes SUL0, SUL1, and SUL2. SUL0 corresponds to RSRP threshold 0, SUL1 corresponds to RSRP threshold 1, and SUL2 corresponds to RSRP threshold 2. Furthermore, the indication information corresponding to SUL0 indicates a first state, and the indication information corresponding to SUL1 and SUL2 indicates a second state. If the RSRP measured by the UE at this time satisfies that it is greater than RSRP threshold 0, but not less than RSRP threshold 1 or RSRP threshold 2, then the UE determines that SUL0 is the first uplink carrier.

[0091] Alternatively, the RSRP measured by the UE may satisfy the selection rules for multiple SUL carriers. In this case, the UE can determine one of the SUL carriers as the first uplink carrier, for example, by random selection, or by selecting the SUL carrier with a higher or lower frequency as the first uplink carrier. For instance, if the RSRP measured by the UE does not meet the condition of being greater than the RSRP threshold 0, but is less than both the RSRP threshold 1 and RSRP threshold 2, then the UE can randomly select either SUL1 or SUL2 as the first uplink carrier, or the UE can select the higher or lower frequency SUL1 or SUL2 as the first uplink carrier.

[0092] Alternatively, the RSRP measured by the UE may not satisfy the selection rules for all SUL carriers, in which case the UE can determine the NUL carrier as the first uplink carrier. The selection rule for a SUL carrier can also be viewed as the relationship between the measured RSRP, the RSRP threshold corresponding to the SUL carrier, and the state indicated by the indication information corresponding to the SUL carrier. For example, if the UE determines that it does not select SUL0, SUL1, and SUL2 after comparing RSRP thresholds 0, 1, and 2, the UE can select the NUL carrier as the first uplink carrier.

[0093] In the above example, the UE determines the first uplink carrier only after comparing the measured RSRP with all of the at least one RSRP thresholds. Or it is also possible that the UE can determine the first uplink carrier just by comparing the measured RSRP with some of the at least one RSRP thresholds.

[0094] For example, the at least one SUL carrier includes SUL0, SUL1, and SUL2. SUL0 corresponds to RSRP threshold 0, SUL1 corresponds to RSRP threshold 1, and SUL2 corresponds to RSRP threshold 2, where RSRP threshold 0 > RSRP threshold 2 > RSRP threshold 1. The indication information corresponding to SUL0 indicates the first state, the indication information corresponding to SUL1 indicates the second state, and the indication information corresponding to SUL2 indicates the first state. Since this is a case where there is no priority, the chances of each uplink carrier being selected should be equal. Therefore, when making comparisons, there is no restriction on the execution order of the UE. For example, the UE first compares the measured RSRP with RSRP threshold 0 to determine whether the measured RSRP is greater than RSRP threshold 0. If the measured RSRP is greater than RSRP threshold 0, the UE can select SUL0; otherwise, the UE does not select SUL0. For example, the comparison result is that the measured RSRP is less than RSRP threshold 0. Then, the UE compares the measured RSRP with RSRP threshold 1 to determine whether the measured RSRP is less than RSRP threshold 1. If the measured RSRP is less than RSRP threshold 1, the UE can select SUL1; otherwise, the UE does not select SUL1. For example, the comparison result is that the measured RSRP is less than RSRP threshold 1, and the selection rule corresponding to SUL2 is that SUL2 is selected only if the measured RSRP is greater than RSRP threshold 2. Then, since RSRP threshold 1 < RSRP threshold 2 and the measured RSRP is already less than RSRP threshold 1, it is impossible for it to be greater than RSRP threshold 2. Therefore, the UE does not need to compare the measured RSRP with RSRP threshold 2 anymore and can determine SUL1 as the first uplink carrier.

[0095] In this case, the RSRP measured by the UE may only meet the selection rule of one of the SUL carriers, or it may also meet the selection rules of multiple SUL carriers. Then, if it meets the selection rules of multiple SUL carriers, as to how the UE determines the first uplink carrier, reference can be made to the introduction above.

[0096] In the example above, although the UE may be able to determine the first uplink carrier by comparing the measured RSRP with a portion of the RSRP thresholds, if the first uplink carrier is a NUL carrier, the UE still needs to compare the measured RSRP with all RSRP thresholds. Only if none of them meet the selection rules can the NUL carrier be determined as the first uplink carrier. However, this application provides another method where, if the UE determines the first uplink carrier without considering the priority of the SUL carrier, the UE can also determine the NUL carrier as the first uplink carrier by comparing the measured RSRP with a portion of at least one RSRP threshold, without comparing all RSRP thresholds.

[0097] For example, the UE designates all SUL carriers indicating the first state as Class A SUL carriers, and designates the SUL carrier with the smallest corresponding RSRP threshold among the Class A SUL carriers as SUL_A carrier. Conversely, it designates all SUL carriers indicating the second state as Class B carriers, and designates the SUL carrier with the largest corresponding RSRP threshold among the Class B SUL carriers as SUL_B carrier. The UE compares the measured RSRP with at least one RSRP threshold in any order. After comparing the measured RSRP with the RSRP threshold corresponding to the SUL_A carrier, and after comparing the measured RSRP with the RSRP threshold corresponding to the SUL_B carrier, if the measured RSRP does not satisfy the relationship between the RSRP threshold corresponding to the SUL_A carrier, the measured RSRP, and the corresponding state, and if the measured RSRP also does not satisfy the relationship between the RSRP threshold corresponding to the SUL_B carrier, the measured RSRP, and the corresponding state, then the UE can determine the NUL carrier as the first uplink carrier. If there are still uncompared RSRP thresholds, no further comparison is necessary.

[0098] For example, at least one SUL carrier includes SUL0, SUL1, SUL2, and SUL3. SUL0 corresponds to RSRP threshold 0, SUL1 corresponds to RSRP threshold 1, SUL2 corresponds to RSRP threshold 2, and SUL3 corresponds to RSRP threshold 3. The indication information corresponding to SUL0 indicates a first state, the indication information corresponding to SUL1 indicates a second state, the indication information corresponding to SUL2 indicates a first state, and the indication information corresponding to SUL3 indicates a second state. The UE then designates SUL0 and SUL2 as Class A carriers and SUL1 and SUL3 as Class B carriers. For example, if RSRP threshold 0 > RSRP threshold 2 and RSRP threshold 1 > RSRP threshold 3, the UE designates SUL2 as a SUL_A carrier and SUL1 as a SUL_B carrier. The UE compares the measured RSRP with at least one RSRP threshold in any order. For example, the UE first compares the measured RSRP with RSRP threshold 0. If the comparison result is that the measured RSRP is less than RSRP threshold 0, the UE does not select SUL0 and compares the measured RSRP with RSRP threshold 1. For example, if the comparison result shows that the measured RSRP is greater than RSRP threshold 1, then the UE will not select SUL1 and will compare the measured RSRP with RSRP threshold 2. If the comparison result shows that the measured RSRP is less than RSRP threshold 2, then both SUL_A carrier and SUL_B carrier have been compared and neither meets the selection rule, so the UE can determine the NUL carrier as the first uplink carrier and there is no need to compare RSRP threshold 3 again.

[0099] If the UE determines the first uplink carrier while considering the priority of the SUL carrier, the UE can compare the measured RSRP with some or all of the RSRP thresholds in descending order of priority, and determine the first uplink carrier based on the comparison results. In this approach, the UE may determine the first uplink carrier by comparing the measured RSRP with all of the at least one RSRP thresholds, or it may determine the first uplink carrier by comparing the measured RSRP with some of the at least one RSRP thresholds.

[0100] For example, at least one SUL carrier includes SUL0, SUL1, and SUL2. SUL0 corresponds to RSRP threshold 0, SUL1 corresponds to RSRP threshold 1, and SUL2 corresponds to RSRP threshold 2, where the priority of SUL0 > the priority of SUL1 > the priority of SUL2. The indication information corresponding to SUL0 indicates the first state, the indication information corresponding to SUL1 indicates the second state, and the indication information corresponding to SUL2 indicates the second state. Because this is a priority case, during comparison, the UE can compare the measured RSRP with the RSRP threshold in descending order of priority. For example, since SUL0 has the highest priority, the UE first compares the measured RSRP with RSRP threshold 0 to determine whether the measured RSRP is greater than RSRP threshold 0. If the measured RSRP is greater than RSRP threshold 0, the UE can select SUL0; otherwise, the UE does not select SUL0. For example, the comparison result may be that the measured RSRP is less than RSRP threshold 0. Next, the UE compares the measured RSRP with RSRP threshold 1 to determine if the measured RSRP is less than RSRP threshold 1. If the measured RSRP is less than RSRP threshold 1, the UE can select SUL1; otherwise, the UE does not select SUL1. For example, if the comparison result is that the measured RSRP is less than RSRP threshold 1, then the UE can determine SUL1 as the first uplink carrier, without needing to compare the measured RSRP with RSRP threshold 2. By setting priorities, the UE can select higher-priority uplink carriers as much as possible, improving the UE's communication quality and saving the UE's comparison process, thus reducing the UE's power consumption. In this case, the UE's measured RSRP may not meet the selection rules for all SUL carriers, in which case the UE can determine the NUL carrier as the first uplink carrier. For example, if the UE determines that it will not select SUL0, SUL1, and SUL2 after comparing RSRP thresholds 0, 1, and 2, the UE can select the NUL carrier as the first uplink carrier.

[0101] In the example above, although the UE may be able to determine the first uplink carrier by comparing the measured RSRP with a portion of the RSRP thresholds, if the first uplink carrier is a NUL carrier, the UE still needs to compare the measured RSRP with all RSRP thresholds. Only if none of them meet the selection rules can the NUL carrier be determined as the first uplink carrier. However, this application provides another method where, if the UE determines the first uplink carrier considering the priority of the SUL carrier, the UE can also determine the NUL carrier as the first uplink carrier by comparing the measured RSRP with at least a portion of the RSRP thresholds, without comparing all RSRP thresholds.

[0102] For example, the UE designates all SUL carriers indicating the first state as Class A SUL carriers, and designates the SUL carrier with the smallest corresponding RSRP threshold among the Class A SUL carriers as SUL_A carrier. Conversely, it designates all SUL carriers indicating the second state as Class B carriers, and designates the SUL carrier with the largest corresponding RSRP threshold among the Class B SUL carriers as SUL_B carrier. The UE compares the measured RSRP with at least one RSRP threshold sequentially, from highest to lowest priority. After comparing the measured RSRP with the RSRP threshold corresponding to the SUL_A carrier, and after comparing the measured RSRP with the RSRP threshold corresponding to the SUL_B carrier, if the measured RSRP does not satisfy the relationship between the RSRP threshold corresponding to the SUL_A carrier, the measured RSRP, and the corresponding state, and if the measured RSRP also does not satisfy the relationship between the RSRP threshold corresponding to the SUL_B carrier, the measured RSRP, and the corresponding state, then the UE can determine the NUL carrier as the first uplink carrier. If there are still uncompared RSRP thresholds, no further comparison is necessary. For an example of this, please refer to the previous text. The difference is that in the previous example, the UEs were compared in any order, while here the UEs are compared in order of priority from high to low.

[0103] Furthermore, consider another scenario: network devices may misconfigure RSRP thresholds. For example, generally, higher-frequency SUL carriers are configured with larger RSRP thresholds. However, if the network device errs, it might configure a lower-frequency SUL carrier with a higher RSRP threshold than the higher-frequency SUL carrier. In this case, if the UE selects the uplink carrier according to the normal selection process described above, errors may occur, such as the inability to select an uplink carrier. To address this, embodiments of this application provide a fault-tolerant mechanism that allows the UE to select an uplink carrier even in the event of a network device configuration error.

[0104] If this fault-tolerant mechanism is adopted, regardless of how many RSRP thresholds are configured on the network device, the UE will only compare the measured RSRP with one of the RSRP thresholds and determine the first uplink carrier based on the comparison result. For example, if the network device is configured with at least one RSRP threshold, the UE will select one RSRP threshold and compare the measured RSRP with that threshold. If at least one SUL carrier corresponds to priority information, the UE can select the RSRP threshold corresponding to the highest priority SUL carrier when selecting an RSRP threshold from at least one RSRP threshold. If at least one SUL carrier does not correspond to priority information, the UE can randomly select an RSRP threshold. If the configuration information of the RSRP threshold selected by the UE includes an indication that indicates a first state, then if the measured RSRP is greater than the RSRP threshold, the UE determines the SUL carrier corresponding to that RSRP threshold as the first uplink carrier; otherwise, the UE determines the second uplink carrier as the first uplink carrier, which is one of the other SUL carriers besides the selected SUL carrier. Alternatively, if the configuration information containing the RSRP threshold indicates a second state, then if the measured RSRP is less than the RSRP threshold, the UE determines the SUL carrier corresponding to the RSRP threshold as the first uplink carrier; otherwise, the UE determines the second uplink carrier as the first uplink carrier. Wherein, if at least one SUL carrier does not correspond to priority information, then the second uplink carrier can be any SUL carrier other than the first uplink carrier among the at least one SUL carriers; or, if at least one SUL carrier corresponds to priority information, then the second uplink carrier can be the highest priority SUL carrier among the at least one SUL carriers other than the first uplink carrier.

[0105] For example, at least one SUL carrier includes SUL0 and SUL1, where SUL0 is referred to as the first SUL carrier and SUL1 as the second uplink carrier. The network device configures an RSRP threshold of 0 for SUL0 and an RSRP threshold of 1 for SUL1; for example, RSRP threshold 0 is referred to as the first RSRP threshold and RSRP threshold 1 as the second RSRP threshold. Since the frequency of SUL0 is greater than the frequency of SUL1, RSRP threshold 0 should ideally be greater than RSRP threshold 1, but the network device configures RSRP threshold 0 to be less than RSRP threshold 1. When comparing, if both SUL0 and SUL1 correspond to priority information, for example, if the priority of SUL0 is greater than the priority of SUL1, the UE can choose to compare RSRP threshold 0 with the measured RSRP. If the indication information corresponding to SUL0 indicates the first state, then if the measured RSRP is greater than the RSRP threshold 0, the UE determines SUL0 as the first uplink carrier; otherwise, it determines SUL1 as the first uplink carrier. Alternatively, if the indication information corresponding to SUL0 indicates the second state, then if the measured RSRP is less than the RSRP threshold 0, the UE determines SUL0 as the first uplink carrier; otherwise, it determines SUL1 as the first uplink carrier. Alternatively, when comparing, if neither SUL0 nor SUL1 corresponds to priority information, the UE can choose RSRP threshold 0 or RSRP threshold 1 to compare with the measured RSRP; for example, the UE might choose RSRP threshold 1. If the indication information corresponding to SUL1 indicates the first state, then if the measured RSRP is greater than the RSRP threshold 1, the UE determines SUL1 as the first uplink carrier; otherwise, it determines SUL0 as the first uplink carrier. Alternatively, if the indication information corresponding to SUL1 indicates the second state, then if the measured RSRP is less than the RSRP threshold 1, the UE determines SUL1 as the first uplink carrier; otherwise, it determines SUL0 as the first uplink carrier.

[0106] Through this fault-tolerance mechanism, even if the RSRP threshold configured by the network device is incorrect, the UE can still select the first uplink carrier, thereby enabling the subsequent transmission of uplink signals.

[0107] S33. The UE transmits an uplink signal on the first uplink carrier, and the network device receives the uplink signal from the UE on the first uplink carrier.

[0108] After determining the first uplink carrier, the UE can transmit uplink signals via that carrier. Since the network device cannot determine which uplink carrier the UE has selected, it can perform blind detection on at least one SUL carrier and one NUL carrier to receive the uplink signal. For example, if the network device successfully detects the signal on one uplink carrier, it receives the uplink signal on that carrier; in this case, that one uplink carrier is the first uplink carrier. This uplink signal can be, for example, a preamble signal during random access, or other uplink signals, such as other uplink signals during random access or other uplink signals after successful random access.

[0109] In this embodiment, the network device can indicate a state through indication information, and the state can also be regarded as a selection rule. For example, the first state corresponds to a selection rule. If the indication information corresponding to the first SUL carrier indicates the first state, then if the measured RSRP is greater than the RSRP threshold corresponding to the first SUL carrier, the UE can select the first SUL carrier; otherwise, the UE will not select the first SUL carrier. In other words, this embodiment provides a method for determining the uplink carrier. Regardless of whether the frequency of the SUL carrier is less than or greater than the frequency of the NUL carrier, the UE can determine the uplink carrier according to the method provided in this embodiment, thereby improving the success rate of the UE in determining the uplink carrier and enabling the UE to transmit uplink signals normally on the determined uplink carrier.

[0110] Next, this application provides a second method for transmitting and receiving signals; please refer to [link to relevant documentation]. Figure 7 Here is a flowchart of the method. In the following description, this method will be applied to... Figure 2 The network architecture shown is an example.

[0111] For ease of explanation, the following description will use the example of this method being executed by a network device and a UE. This is because the embodiments of this application are based on applications in… Figure 2 The network architecture shown is an example. Therefore, the network devices described below are, for example, [examples of network devices]. Figure 2 In the network architecture shown, the access network device, referred to below as the UE, can be... Figure 2 The UE in the network architecture shown.

[0112] S71. The network device sends configuration information for at least one SUL carrier, and correspondingly, the UE receives configuration information for at least one SUL carrier from the network device. The network device may send the configuration information for at least one SUL carrier via unicast, in which case the UE can receive the configuration information for at least one SUL carrier; alternatively, the network device may also send the configuration information for at least one SUL carrier via broadcast, in which case multiple UEs may be able to receive the configuration information for at least one SUL carrier, and the UE mentioned in S71 is one of those UEs.

[0113] Network devices can send configuration information for at least one SUL carrier, where one SUL carrier corresponds to one configuration information, or one configuration information can be used to configure one SUL carrier; that is, there is a one-to-one correspondence between configuration information and SUL carriers. For example, at least one SUL carrier includes a first SUL carrier, which may be any one of the at least one SUL carriers. The configuration information for the first SUL carrier may include a first RSRP threshold, which is the RSRP threshold corresponding to the first SUL carrier. Different configuration information for at least one SUL carrier can include an RSRP threshold; that is, the parameters (including the RSRP threshold) included in the configuration information for at least one SUL carrier can be the same, only the values ​​of the parameters (e.g., the value of the RSRP threshold) may differ. For example, at least one SUL carrier may also include a second SUL carrier, and the configuration information of the second SUL carrier may also include an RSRP threshold. To distinguish them, the RSRP threshold included in the configuration information of the first SUL carrier is called RSRP threshold 1, and the RSRP threshold included in the configuration information of the second SUL carrier is called RSRP threshold 2. Then RSRP threshold 1 and RSRP threshold 2 may be different.

[0114] For a single SUL carrier, the network device will send supplementary uplink parameters corresponding to that SUL carrier. For example, the configuration information described in this embodiment is included in the supplementary uplink parameters corresponding to the SUL carrier. One SUL carrier corresponds to one supplementary uplink parameter, so for at least one SUL carrier, the network device sends at least one supplementary uplink parameter, which is equivalent to sending at least one configuration information. For details on how the network device includes configuration information in the supplementary uplink parameters, please refer to [link to relevant documentation]. Figure 3 The description of S31 in the illustrated embodiment is only applicable to this embodiment, where the configuration information does not include... Figure 3 The indicated information is shown in the embodiment.

[0115] As an optional implementation, the network device may also transmit priority information for at least one SUL carrier. For example, the priority information for one SUL carrier may also be included in the configuration information of that SUL carrier. That is, the configuration information for at least one SUL carrier transmitted by the network device includes priority information for at least one SUL carrier, wherein each configuration information includes one priority information, and the priority information included in each configuration information is used to indicate the priority of the SUL carrier corresponding to that configuration information. For example, if at least one SUL carrier includes a first SUL carrier, the configuration information for the first SUL carrier may include the priority information for the first SUL carrier. For details regarding how the network device includes priority information in the configuration information, please refer to [link to relevant documentation]. Figure 3 The description of S31 in the illustrated embodiment is only applicable to this embodiment, where the configuration information does not include... Figure 3 The indicated information is shown in the embodiment.

[0116] Another possibility is that the priority of at least one SUL carrier can be the default or specified by the protocol, in which case the network device does not need to send priority information. Alternatively, a priority may not be set for at least one SUL carrier, in which case the network device also does not need to send priority information.

[0117] S72, the UE determines the frequency of at least one SUL carrier and the frequency of the NUL carrier.

[0118] For example, a network device may configure the frequency of at least one SUL carrier and the frequency of one NUL carrier via signaling. The UE can then determine the frequencies of at least one SUL carrier and one NUL carrier based on the signaling from the network device. Alternatively, the network device may include the SUL carrier frequency information in the configuration information. In this case, the at least one configuration message sent by the network device in S71 would include the frequency information of at least one SUL carrier, where there is a one-to-one correspondence between the configuration information and the frequency information.

[0119] Alternatively, the network device may not include the SUL carrier frequency information in the configuration information, but instead send the SUL carrier frequency information through other information. In this case, the network device can send the frequency information of at least one SUL carrier, which can be sent in a single message. This message could be a system message, or another type of message. If the message is a system message, it can be the same system message as the system message containing the at least one configuration information, or it can be a different system message. If the network device sends at least one configuration information and at least one SUL carrier frequency information through different messages, the step of sending the frequency information of at least one SUL carrier can occur before, after, or simultaneously with S71.

[0120] For NUL carriers, network devices can also send configuration information. To distinguish this information, the configuration information sent by the network device to the NUL carrier can be called the first information. The first information may include the frequency of the NUL carrier. For example, the configuration information and the first information for at least one SUL carrier may be included in the same message, or they may be included in different messages.

[0121] S73. The UE determines the uplink carrier based on the frequency of at least one SUL carrier, the frequency of the NUL carrier, the measured RSRP, and at least one RSRP threshold. For example, the uplink carrier determined by the UE is referred to as the first uplink carrier, which may be one of at least one SUL carrier or an NUL carrier.

[0122] The network device also sends a reference signal, which the UE can receive from the network device. This reference signal may be, for example, an SSB or CSI-RS. After receiving the reference signal, the UE can measure it to obtain the RSRP. If at least one SUL carrier does not correspond to a priority (e.g., the network device does not send at least one priority information, or there is no default priority for at least one SUL carrier, and the protocol does not specify a priority for at least one SUL carrier), the UE can determine the first uplink carrier based on the frequency of at least one SUL carrier, the frequency of the NUL carrier, the measured RSRP, and at least one RSRP threshold. Alternatively, if at least one SUL carrier corresponds to a priority (e.g., the UE receives at least one priority information, or the priority of at least one SUL carrier is determined by a default method or a method specified by the protocol), the UE can determine the first uplink carrier based on the frequency of at least one SUL carrier, the frequency of the NUL carrier, the measured RSRP, the priority of at least one SUL carrier, and at least one RSRP threshold.

[0123] In this application embodiment, selection rules can be pre-configured for the UE, or the selection rules can be default, or the selection rules can be specified by a protocol. For example, this application embodiment includes two selection rules, which are as follows:

[0124] Rule 1: If the frequency of the SUL carrier is greater than the frequency of the NUL carrier, and the measured RSRP is greater than the RSRP threshold corresponding to the SUL carrier, then the SUL carrier is selected; otherwise, the SUL carrier is not selected.

[0125] Rule 2: If the frequency of the SUL carrier is less than the frequency of the NUL carrier and the measured RSRP is less than the RSRP threshold corresponding to the SUL carrier, then the SUL carrier is selected; otherwise, the SUL carrier is not selected.

[0126] For the UE, to determine whether a SUL carrier can be used as the first uplink carrier, the frequencies of the SUL carrier and NUL carrier can be determined. If the frequency of the SUL carrier is greater than the frequency of the NUL carrier, rule 1 applies. Under rule 1, if the RSRP measured by the UE is greater than the RSRP threshold corresponding to the SUL carrier, the SUL carrier is selected; otherwise, it is not selected. Alternatively, if the frequency of the SUL carrier is less than the frequency of the NUL carrier, rule 2 applies. Under rule 2, if the RSRP measured by the UE is less than the RSRP threshold corresponding to the SUL carrier, the SUL carrier is selected; otherwise, it is not selected. Therefore, in this embodiment, the selection rule is known to the UE, and there is no need for the network device to indicate the corresponding selection rule. The UE can determine the selection rule applicable to a SUL carrier based on the frequencies of the SUL carrier and NUL carrier, which can reduce the signaling overhead caused by the network device indicating the selection rule.

[0127] Whether a UE can select a SUL carrier is determined by comparing the measured RSRP with the RSRP threshold of the SUL carrier. If the UE determines the first uplink carrier without considering the priority of the SUL carrier, the UE can compare the measured RSRP with some or all of the RSRP thresholds in any order and determine the first uplink carrier based on the comparison results.

[0128] For example, the UE can compare the measured RSRP with all RSRP thresholds in at least one RSRP threshold in any order. After all comparisons are completed, the first uplink carrier is determined based on all comparison results. For example, at least one SUL carrier includes SUL0, SUL1, and SUL2. SUL0 corresponds to RSRP threshold 0, SUL1 corresponds to RSRP threshold 1, and SUL2 corresponds to RSRP threshold 2. The frequency of SUL0 is greater than the frequency of the NUL carrier, the frequency of SUL1 is less than the frequency of the NUL carrier, and the frequency of SUL2 is less than the frequency of the NUL carrier. Because there is no priority, each uplink carrier should have an equal chance of being selected. Therefore, the UE can compare the measured RSRP with these three RSRP thresholds separately, and there is no restriction on the order of comparison. For example, the UE compares the measured RSRP with RSRP threshold 0 to determine whether the measured RSRP is greater than RSRP threshold 0. If the measured RSRP is greater than RSRP threshold 0, the UE can select SUL0; otherwise, the UE does not select SUL0. The UE compares the measured RSRP with RSRP threshold 1 to determine if the measured RSRP is less than RSRP threshold 1. If the measured RSRP is less than RSRP threshold 1, the UE can select SUL1; otherwise, the UE does not select SUL1. The UE compares the measured RSRP with RSRP threshold 2 to determine if the measured RSRP is less than RSRP threshold 2. If the measured RSRP is less than RSRP threshold 2, the UE can select SUL2; otherwise, the UE does not select SUL1. See the example for further details. Figure 6 .

[0129] The RSRP measured by the UE may only satisfy the selection rule for one of the SUL carriers, in which case the UE can determine that SUL carrier as the first uplink carrier. Alternatively, the RSRP measured by the UE may satisfy the selection rule for multiple SUL carriers. For details on how the UE determines the first uplink carrier, please refer to [reference needed]. Figure 3 The embodiment shown describes S32.

[0130] Alternatively, the RSRP measured by the UE may not satisfy the selection rules for all SUL carriers. In this case, the UE can determine the NUL carrier as the first uplink carrier. A selection rule for an SUL carrier can also be viewed as the relationship between the measured RSRP, the RSRP threshold corresponding to the SUL carrier, the frequency of the SUL carrier, and the frequency of the NUL carrier. For example, if the UE determines that it will not select SUL0, SUL1, and SUL2 after comparing RSRP thresholds 0, 1, and 2, the UE can select the NUL carrier as the first uplink carrier.

[0131] In the above example, the UE determines the first uplink carrier only after comparing the measured RSRP with all of the at least one RSRP thresholds. Or, it is also possible that the UE can determine the first uplink carrier only by comparing the measured RSRP with some of the at least one RSRP thresholds.

[0132] For example, the at least one SUL carrier includes SUL0, SUL1, and SUL2. SUL0 corresponds to the RSRP threshold 0, SUL1 corresponds to the RSRP threshold 1, and SUL2 corresponds to the RSRP threshold 2. Among them, RSRP threshold 0 > RSRP threshold 2 > RSRP threshold 1. The frequency of SUL0 is greater than the frequency of the NUL carrier, the frequency of SUL1 is less than the frequency of the NUL carrier, and the frequency of SUL2 is greater than the frequency of the NUL carrier. Since this is a case where there is no priority, the chances of each uplink carrier being selected should be equal. Therefore, when making comparisons, there is no restriction on the execution order of the UE. For example, the UE first compares the measured RSRP with the RSRP threshold 0 to determine whether the measured RSRP is greater than the RSRP threshold 0. If the measured RSRP is greater than the RSRP threshold 0, the UE can select SUL0; otherwise, the UE does not select SUL0. For example, the comparison result shows that the measured RSRP is less than the RSRP threshold 0. Then, the UE compares the measured RSRP with the RSRP threshold 1 to determine whether the measured RSRP is less than the RSRP threshold 1. If the measured RSRP is less than the RSRP threshold 1, the UE can select SUL1; otherwise, the UE does not select SUL1. For example, the comparison result shows that the measured RSRP is less than the RSRP threshold 1, and the selection rule for SUL2 is that SUL2 is selected only if the measured RSRP is greater than the RSRP threshold 2. Then, since RSRP threshold 1 < RSRP threshold 2 and the measured RSRP is already less than the RSRP threshold 1, it is impossible for the measured RSRP to be greater than the RSRP threshold 2. Therefore, the UE does not need to compare the measured RSRP with the RSRP threshold 2 anymore, but can determine that SUL1 is the first uplink carrier.

[0133] In this case, the RSRP measured by the UE may only satisfy the selection rule of one of the SUL carriers, or it may also satisfy the selection rules of multiple SUL carriers. If it satisfies the selection rules of multiple SUL carriers, for how the UE determines the first uplink carrier, reference can be made to the previous introduction.

[0134] In the example above, although the UE may be able to determine the first uplink carrier by comparing the measured RSRP with a portion of the RSRP thresholds, if the first uplink carrier is a NUL carrier, the UE still needs to compare the measured RSRP with all RSRP thresholds. Only if none of them meet the selection rules can the NUL carrier be determined as the first uplink carrier. However, this application provides another method where, if the UE determines the first uplink carrier without considering the priority of the SUL carrier, the UE can also determine the NUL carrier as the first uplink carrier by comparing the measured RSRP with a portion of at least one RSRP threshold, without comparing all RSRP thresholds.

[0135] For example, the UE designates all SUL carriers with frequencies higher than the NUL carrier as Class A SUL carriers, and designates the SUL carrier with the smallest corresponding RSRP threshold among the Class A SUL carriers as SUL_A carrier. Conversely, all SUL carriers with frequencies lower than the NUL carrier are designated as Class B carriers, and the SUL carrier with the largest corresponding RSRP threshold among the Class B SUL carriers is designated as SUL_B carrier. The UE compares the measured RSRP with at least one RSRP threshold in any order. After comparing the measured RSRP with the RSRP threshold corresponding to the SUL_A carrier, and after comparing the measured RSRP with the RSRP threshold corresponding to the SUL_B carrier, if the measured RSRP does not satisfy the relationship between the RSRP threshold corresponding to the SUL_A carrier, the measured RSRP, the frequency of the SUL_A carrier, and the frequency of the NUL carrier, and if the measured RSRP also does not satisfy the relationship between the RSRP threshold corresponding to the SUL_B carrier, the measured RSRP, the frequency of the SUL_B carrier, and the frequency of the NUL carrier, then the UE can determine the NUL carrier as the first uplink carrier. If there are still uncompared RSRP thresholds, no further comparison is necessary. For an example of this, please refer to Figure 3 The embodiment shown differs in that the network device does not indicate the state in this embodiment, and the UE can determine the judgment method based on the frequency of the SUL carrier and the frequency of the NUL carrier.

[0136] If the UE determines the first uplink carrier while considering the priority of the SUL carrier, the UE can compare the measured RSRP with some or all of the RSRP thresholds in descending order of priority, and determine the first uplink carrier based on the comparison results. In this approach, the UE may determine the first uplink carrier by comparing the measured RSRP with all of the at least one RSRP thresholds, or it may determine the first uplink carrier by comparing the measured RSRP with some of the at least one RSRP thresholds.

[0137] For example, at least one SUL carrier includes SUL0, SUL1, and SUL2. SUL0 corresponds to RSRP threshold 0, SUL1 corresponds to RSRP threshold 1, and SUL2 corresponds to RSRP threshold 2. The priority of SUL0 is greater than that of SUL1, which is greater than that of SUL2. The frequency of SUL0 is greater than that of the NUL carrier, the frequency of SUL1 is less than that of the NUL carrier, and the frequency of SUL2 is less than that of the NUL carrier. Because this involves priorities, during comparison, the UE can compare the measured RSRP with the RSRP threshold in descending order of priority. For example, since SUL0 has the highest priority, the UE first compares the measured RSRP with RSRP threshold 0 to determine if the measured RSRP is greater than RSRP threshold 0. If the measured RSRP is greater than RSRP threshold 0, the UE can select SUL0; otherwise, the UE will not select SUL0. For example, the comparison result might be that the measured RSRP is less than RSRP threshold 0. Next, the UE compares the measured RSRP with RSRP threshold 1 to determine if the measured RSRP is less than RSRP threshold 1. If the measured RSRP is less than RSRP threshold 1, the UE can select SUL1; otherwise, the UE does not select SUL1. For example, if the comparison result is that the measured RSRP is less than RSRP threshold 1, then the UE can determine SUL1 as the first uplink carrier, without needing to compare the measured RSRP with RSRP threshold 2. By setting priorities, the UE can select higher-priority uplink carriers as much as possible, improving the UE's communication quality and also saving the UE's comparison process, thus reducing the UE's power consumption.

[0138] In this situation, the RSRP measured by the UE may not meet the selection rules for all SUL carriers. In this case, the UE can determine the NUL carrier as the first uplink carrier. For example, if the UE determines that it does not select SUL0, SUL1, and SUL2 after comparing RSRP thresholds 1, 2, and 3, the UE can select the NUL carrier as the first uplink carrier.

[0139] Additionally, embodiments of this application can also provide a fault-tolerance mechanism for incorrect RSRP threshold configurations in network devices; details regarding this can be found in [reference needed]. Figure 3 The following is a description of the embodiments shown.

[0140] In the example above, although the UE may be able to determine the first uplink carrier by comparing the measured RSRP with a portion of the RSRP thresholds, if the first uplink carrier is a NUL carrier, the UE still needs to compare the measured RSRP with all RSRP thresholds. Only if none of them meet the selection rules can the NUL carrier be determined as the first uplink carrier. However, this application provides another method where, if the UE determines the first uplink carrier considering the priority of the SUL carrier, the UE can also determine the NUL carrier as the first uplink carrier by comparing the measured RSRP with at least a portion of the RSRP thresholds, without comparing all RSRP thresholds.

[0141] For example, the UE designates all SUL carriers with frequencies higher than the NUL carrier as Class A SUL carriers, and designates the SUL carrier with the lowest corresponding RSRP threshold among the Class A SUL carriers as SUL_A carrier. Conversely, all SUL carriers with frequencies lower than the NUL carrier are designated as Class B carriers, and the SUL carrier with the highest corresponding RSRP threshold among the Class B SUL carriers is designated as SUL_B carrier. The UE then compares the measured RSRP with at least one RSRP threshold sequentially, in descending order of priority. After comparing the measured RSRP with the RSRP threshold corresponding to the SUL_A carrier, and after comparing the measured RSRP with the RSRP threshold corresponding to the SUL_B carrier, if the measured RSRP does not satisfy the relationship between the RSRP threshold corresponding to the SUL_A carrier, the measured RSRP, the frequency of the SUL_A carrier, and the frequency of the NUL carrier, and also does not satisfy the relationship between the RSRP threshold corresponding to the SUL_B carrier, the measured RSRP, the frequency of the SUL_B carrier, and the frequency of the NUL carrier, then the UE can determine the NUL carrier as the first uplink carrier. If there are still uncompared RSRP thresholds, no further comparison is needed. An example of this can be found in [reference needed]. Figure 3 The embodiment shown differs in that the network device does not indicate the state in this embodiment, and the UE can determine the judgment method based on the frequency of the SUL carrier and the frequency of the NUL carrier.

[0142] S74. The UE transmits an uplink signal on the first uplink carrier, and the network device receives the uplink signal from the UE on the first uplink carrier.

[0143] For more information about the S74, please refer to [link / reference]. Figure 3 The embodiment shown describes S33.

[0144] In this embodiment, the network device does not need to indicate selection rules; the UE can determine the selection rules based on the frequencies of the SUL and NUL carriers, thereby selecting the uplink carrier. In other words, this embodiment provides a method for determining the uplink carrier. Regardless of whether the SUL carrier frequency is lower or higher than the NUL carrier frequency, the UE can determine the uplink carrier using the method provided in this embodiment, thus improving the success rate of uplink carrier determination and enabling the UE to transmit uplink signals normally on the determined uplink carrier. Furthermore, since the network device does not need to indicate selection rules, signaling overhead is also saved.

[0145] Figure 8 A schematic diagram of a communication device according to an embodiment of this application is provided. The communication device 800 may be... Figure 2 The terminal device in the above method embodiments is used to implement the method for the terminal device in the above method embodiments. The communication device can also be... Figure 2 The network device in the above method embodiments is used to implement the method corresponding to the network device. For specific functions, please refer to the description in the above method embodiments.

[0146] The communication device 800 includes one or more processors 801. The processor 801, also called a processing unit, can implement certain control functions. The processor 801 can be a general-purpose processor or a dedicated processor, etc. For example, it includes: a baseband processor, a central processing unit (CPU), an application processor, a modem processor, a graphics processor, an image signal processor, a digital signal processor, a video codec processor, a controller, a memory, and / or a neural network processor, etc. The baseband processor can be used to process communication protocols and communication data. The CPU can be used to control the communication device 800, execute software programs, and / or process data. Different processors can be independent devices or integrated into one or more processors, for example, integrated on one or more application-specific integrated circuits (ASICs).

[0147] Optionally, the communication device 800 includes one or more memories 802 for storing instructions 804, which can be executed on the processor to cause the terminal device 800 to perform the methods described in the above method embodiments. Optionally, the memories 802 may also store data. The processor and memories can be configured separately or integrated together.

[0148] Optionally, one or more processors 801 may include instructions 803 (sometimes also referred to as code or program) that can be executed on the processor 801 to cause the communication device 800 to perform the methods described in the above embodiments. Data may be stored in the processor 801.

[0149] Optionally, the communication device 800 may also include a transceiver 805 and an antenna 806. The transceiver 805 may be referred to as a transceiver unit, transceiver, transceiver circuit, transceiver, input / output interface, etc., and is used to realize the transmission and reception functions of the communication device 800 through the antenna 806.

[0150] Optionally, the communication device 800 may also include one or more of the following components: a wireless communication module, an audio module, an external memory interface, internal memory, a universal serial bus (USB) interface, a power management module, an antenna, a speaker, a microphone, an input / output module, a sensor module, a motor, a camera, or a display screen, etc. It is understood that in some embodiments, the UE 800 may include more or fewer components, or some components may be integrated, or some components may be separated. These components may be implemented in hardware, software, or a combination of software and hardware.

[0151] The processor 801 and transceiver 805 described in this application embodiment can be implemented on integrated circuits (ICs), analog ICs, radio frequency identification (RFID) integrated circuits, mixed-signal ICs, application-specific integrated circuits (ASICs), printed circuit boards (PCBs), or electronic devices. The communication device described herein can be a standalone device (e.g., a standalone integrated circuit, a mobile phone, etc.) or a part of a larger device (e.g., a module embedded in other devices). For details, please refer to the foregoing descriptions of terminal devices and network devices; further details will not be repeated here.

[0152] This application provides a terminal device (referred to as UE for convenience) that can be used in the foregoing embodiments. The terminal device includes components for implementing... Figure 2 , Figure 3 , Figure 6 , and / or Figure 7 The embodiments shown include corresponding means, units, and / or circuits for the UE functions described. For example, a terminal device includes a transceiver module to support the terminal device in implementing transceiver functions, and a processing module to support the terminal device in processing signals.

[0153] Figure 9 A schematic diagram of the structure of a terminal device provided in an embodiment of this application is given.

[0154] This terminal device 900 is applicable to Figure 2 In the architecture shown. For ease of explanation, Figure 9 Only the main components of terminal device 900 are shown. (For example...) Figure 9 As shown, the terminal device 900 includes a processor, memory, control circuitry, antenna, and input / output devices. The processor is primarily used to process communication protocols and data, control the entire terminal device 900, execute software programs, and process the data from those programs. The memory is mainly used to store software programs and data. The control circuitry is primarily used for converting baseband signals to radio frequency signals and processing radio frequency signals. The antenna is primarily used for transmitting and receiving radio frequency signals in the form of electromagnetic waves. Input / output devices, such as touchscreens, displays, microphones, and keyboards, are primarily used to receive user input data and output data to the user.

[0155] Taking terminal device 900 as an example (like a mobile phone), after terminal device 900 is powered on, the processor can read the software program in the storage unit, interpret and execute the instructions of the software program, and process the data of the software program. When data needs to be transmitted wirelessly, the processor performs baseband processing on the data to be transmitted and outputs the baseband signal to the control circuit. The control circuit performs radio frequency processing on the baseband signal and transmits the radio frequency signal outward in the form of electromagnetic waves through the antenna. When data is sent to terminal device 900, the control circuit receives the radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor. The processor converts the baseband signal back into data and processes the data.

[0156] Those skilled in the art will understand that, for ease of explanation, Figure 9 Only one memory and processor are shown. In some embodiments, the terminal device 900 may include multiple processors and memories. Memory may also be referred to as storage medium or storage device, etc., and this embodiment of the invention does not limit this.

[0157] As an optional implementation, the processor may include a baseband processor and a central processing unit. The baseband processor is mainly used to process communication protocols and communication data, while the central processing unit is mainly used to control the entire terminal device 900, execute software programs, and process the data of the software programs. Figure 9The processor in the terminal device 900 integrates the functions of a baseband processor and a central processing unit (CPU). Those skilled in the art will understand that the baseband processor and CPU can also be independent processors interconnected via technologies such as buses. The terminal device 900 may include multiple baseband processors to adapt to different network standards, and multiple CPUs to enhance its processing capabilities. The various components of the terminal device 900 can be connected via various buses. The baseband processor can also be described as a baseband processing circuit or a baseband processing chip. The CPU can also be described as a central processing circuit or a central processing chip. The function of processing communication protocols and communication data can be built into the processor or stored in the storage unit as a software program, with the processor executing the software program to implement the baseband processing function.

[0158] In one example, the antenna and control circuit with transceiver functions can be considered as the transceiver unit 910 of the terminal device 900, and the processor with processing functions can be considered as the processing unit 920 of the terminal device 900. For example... Figure 9 As shown, the terminal device 900 includes a transceiver unit 910 and a processing unit 920. The transceiver unit can also be referred to as a transceiver, transceiver device, or transceiver apparatus. Optionally, the device in the transceiver unit 910 used to implement the receiving function can be considered as a receiving unit, and the device in the transceiver unit 910 used to implement the transmitting function can be considered as a transmitting unit; that is, the transceiver unit 910 includes a receiving unit and a transmitting unit. For example, the receiving unit can also be referred to as a receiver, receiver circuit, or receiving device, and the transmitting unit can be referred to as a transmitter, transmitter, or transmitting circuit.

[0159] This application also provides a network device that can be used in the foregoing embodiments. The network device includes components for implementing... Figure 2 , Figure 3 , Figure 6 , and / or Figure 7 The network device described in the illustrated embodiments includes means, units, and / or circuits for its functions. For example, the network device includes a transceiver module to support terminal devices in implementing transceiver functions, and a processing module to support the network device in processing signals.

[0160] Figure 10 A schematic diagram of the structure of a network device provided in an embodiment of this application is given. Figure 10 As shown, network device 20 can be applied to Figure 2In the illustrated architecture, the network device includes a baseband unit 201, a radio frequency (RF) unit 202, and an antenna 203. In the uplink direction, the RF unit 202 receives information transmitted by the terminal device via the antenna 203 and then transmits the information to the baseband unit 201 for processing. In the downlink direction, the baseband unit 201 processes the information from the terminal device and transmits it to the RF unit 202, which then processes the information and transmits it to the terminal device via the antenna 201.

[0161] The baseband device 201 includes one or more processing units 2011, a storage unit 2012, and an interface 2013. The processing unit 2011 supports the network device in performing the functions of the network device in the above method embodiments. The storage unit 2012 stores software programs and / or data. The interface 2013 interacts with the radio frequency device 202, and includes interface circuitry for information input and output. In one implementation, the processing unit is an integrated circuit, such as one or more ASICs, or one or more DSPs, or one or more FPGAs, or a combination of these integrated circuit types. These integrated circuits can be integrated together to form a chip. The storage unit 2012 and the processing unit 2011 can reside on the same chip, i.e., on-chip storage elements. Alternatively, the storage unit 2012 and the processing unit 2011 can be located on different chips, i.e., off-chip storage elements. The storage unit 2012 can be a single memory or a collective term for multiple memories or storage elements.

[0162] Network devices can implement some or all of the steps in the above method embodiments through one or more processing unit schedulers. For example, implementing... Figure 3 and / or Figure 7 The corresponding functions of the network equipment. The one or more processing units can support the same type of wireless access technology or different types of wireless access technologies.

[0163] Those skilled in the art will recognize that the units and steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software 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 this application.

[0164] 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. Units described as separate components may or may not be physically separated, and components shown as units may or may not be physical units, i.e., 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.

[0165] If the aforementioned functions are implemented as software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or a portion of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned computer-readable storage medium can be any available medium that a computer can access. For example, but not limited to: computer-readable media may include random access memory (RAM), read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), compact disc read-only memory (CD-ROM), universal serial bus flash disk, portable hard disk, or other optical disc storage, magnetic disk storage media, or other magnetic storage devices, or any other medium capable of carrying or storing desired program code having the form of instructions or data structures and accessible by a computer. Additionally, by way of example but not limitation, many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDRSDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), or direct rambus RAM (DR RAM).

[0166] The above description is merely a specific embodiment of this application, but the protection scope of the embodiments of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the embodiments of this application should be included within the protection scope of the embodiments of this application. Therefore, the protection scope of the embodiments of this application should be determined by the protection scope of the claims.

Claims

1. A signal transmission method, characterized in that, include: The network device receives configuration information for at least one supplementary uplink SUL carrier, wherein the configuration information of the first SUL carrier in the configuration information of the at least one SUL carrier includes indication information and a first reference signal received power (RSRP) threshold, the first SUL carrier is any one of the at least one SUL carrier, and the frequency of the first SUL carrier is greater than the frequency of the ordinary uplink NUL carrier or less than the frequency of the NUL carrier. An uplink carrier is determined based on at least one indication information, a measured RSRP, and at least one RSRP threshold. The uplink carrier is one of the at least one SUL carriers or a normal uplink NUL carrier. If the measured RSRP is greater than the first RSRP threshold when the indication information corresponding to the first SUL carrier indicates a first state, then the uplink carrier is the first SUL carrier. Uplink signals are sent to the network device on the uplink carrier.

2. The method according to claim 1, characterized in that, If the indication information corresponding to the first SUL carrier indicates a second state, and the measured RSRP is less than the first RSRP threshold, then the uplink carrier is the first SUL carrier.

3. The method according to claim 1 or 2, characterized in that, The configuration information of the first SUL carrier also includes the priority information of the first SUL carrier.

4. The method according to claim 3, characterized in that, The step of determining the uplink carrier based on at least one indication information, a measured RSRP, and at least one RSRP threshold includes: The measured RSRP is compared with the first RSRP threshold in descending order of priority of the at least one SUL carrier. If the indication information corresponding to the first SUL carrier indicates the first state, and the measured RSRP is greater than the first RSRP threshold, the first SUL carrier is determined to be the uplink carrier; or, if the indication information corresponding to the first SUL carrier indicates the second state, and the measured RSRP is less than the first RSRP threshold, the first SUL carrier is determined to be the uplink carrier.

5. The method according to claim 4, characterized in that, The method further includes: When the indication information corresponding to the first SUL carrier indicates the first state, if the measured RSRP is less than or equal to the first RSRP threshold, the measured RSRP is compared with the second RSRP threshold; or, when the indication information corresponding to the first SUL carrier indicates the second state, if the measured RSRP is greater than or equal to the first RSRP threshold, the measured RSRP is compared with the second RSRP threshold; wherein, the second RSRP threshold is the threshold corresponding to the second SUL carrier among the at least one SUL carrier, and the priority of the first SUL carrier is higher than the priority of the second SUL carrier; If the indication information corresponding to the second SUL carrier indicates the first state, and the measured RSRP is greater than the second RSRP threshold, the second SUL carrier is determined to be the uplink carrier; or, if the indication information corresponding to the second SUL carrier indicates the second state, and the measured RSRP is less than the second RSRP threshold, the second SUL carrier is determined to be the uplink carrier.

6. The method according to any one of claims 1, 2, 4, and 5, characterized in that, If the measured RSRP does not satisfy some or all of the relationships in at least one relation, the uplink carrier is the NUL carrier, wherein one of the at least one relations is the relationship between the state indicated by the indication information corresponding to a SUL carrier, the RSRP threshold corresponding to the SUL carrier, and the measured RSRP.

7. A signal receiving method, characterized in that, include: The configuration information of at least one supplementary uplink SUL carrier is sent to the terminal device. The configuration information of the at least one SUL carrier is used to determine the uplink carrier. The configuration information of the first SUL carrier in the configuration information of the at least one SUL carrier includes indication information and a first reference signal received power (RSRP) threshold. The first SUL carrier is any one of the at least one SUL carrier. The frequency of the first SUL carrier is greater than the frequency of the NUL carrier or less than the frequency of the NUL carrier. The uplink signal from the terminal device is received on the uplink carrier, wherein if the indication information corresponding to the first SUL carrier indicates a first state, and the RSRP measured by the terminal device is greater than the first RSRP threshold, then the uplink carrier is the first SUL carrier.

8. The method according to claim 7, characterized in that, If the indication information corresponding to the first SUL carrier indicates a second state, and the measured RSRP is less than the RSRP threshold corresponding to the first SUL carrier, then the uplink carrier is the first SUL carrier.

9. The method according to claim 7 or 8, characterized in that, The configuration information of the first SUL carrier also includes the priority information of the first SUL carrier.

10. The method according to claim 7 or 8, characterized in that, If the measured RSRP does not satisfy some or all of the relationships in at least one relation, the uplink carrier is an NUL carrier, wherein one of the at least one relations is the relationship between the state indicated by the indication information corresponding to a SUL carrier, the RSRP threshold corresponding to the SUL carrier, and the measured RSRP.

11. A signal transmission method, characterized in that, include: The frequency of at least one supplementary uplink SUL carrier and the frequency of a normal uplink NUL carrier are determined, wherein the frequency of the first SUL carrier in the at least one SUL carrier is greater than the frequency of the NUL carrier or less than the frequency of the NUL carrier. An uplink carrier is determined based on the frequency of the at least one SUL carrier, the frequency of the NUL carrier, the measured reference signal received power (RSRP), and at least one RSRP threshold, wherein the uplink carrier is one of the at least one SUL carrier or the NUL carrier, and the at least one RSRP threshold is received by the terminal device from the network device and corresponds to the at least one SUL carrier. Uplink signals are sent to the network device on the uplink carrier.

12. The method according to claim 11, characterized in that, The step of determining the uplink carrier based on the frequency of the at least one SUL carrier, the frequency of the NUL carrier, the measured RSRP, and the RSRP threshold includes: When the frequency of the first SUL carrier in the at least one SUL carrier is greater than the frequency of the NUL carrier. If the measured RSRP is greater than the RSRP threshold corresponding to the first SUL carrier, then the determined uplink carrier is the first SUL carrier.

13. The method according to claim 11 or 12, characterized in that, The step of determining the uplink carrier based on the frequency of the at least one SUL carrier, the frequency of the NUL carrier, the measured RSRP, and the RSRP threshold includes: When the frequency of the first SUL carrier in the at least one SUL carrier is less than the frequency of the NUL carrier. If the measured RSRP is less than the RSRP threshold corresponding to the first SUL carrier, then the determined uplink carrier is the first SUL carrier.

14. The method according to claim 11 or 12, characterized in that, The method further includes: Receive first information from the network device, the first information being used to indicate the priority of the at least one SUL carrier.

15. The method according to claim 14, characterized in that, The step of determining the uplink carrier based on the frequency of the at least one SUL carrier, the frequency of the NUL carrier, the measured RSRP, and at least one RSRP threshold includes: The measured RSRP is compared with the RSRP threshold corresponding to the first SUL carrier in descending order of priority of the at least one SUL carrier. If the frequency of the first SUL carrier is greater than the frequency of the NUL carrier, and the measured RSRP is greater than the RSRP threshold corresponding to the first SUL carrier, then the first SUL carrier is determined to be the uplink carrier; or, if the frequency of the first SUL carrier is less than the frequency of the NUL carrier, and the measured RSRP is less than the RSRP threshold corresponding to the first SUL carrier, then the first SUL carrier is determined to be the uplink carrier.

16. The method according to claim 15, characterized in that, The method further includes: If the frequency of the first SUL carrier is greater than the frequency of the NUL carrier, and the measured RSRP is less than or equal to the RSRP threshold corresponding to the first SUL carrier, the measured RSRP is compared with a second RSRP threshold; or, if the frequency of the first SUL carrier is less than the frequency of the NUL carrier, and the measured RSRP is greater than or equal to the RSRP threshold corresponding to the first SUL carrier, the measured RSRP is compared with a second RSRP threshold; wherein the second RSRP threshold is the threshold corresponding to the second SUL carrier among the at least one SUL carriers, and the priority of the first SUL carrier is higher than the priority of the second SUL carrier; If the frequency of the second SUL carrier is greater than the frequency of the NUL carrier, and the measured RSRP is greater than the RSRP threshold corresponding to the second SUL carrier, the second SUL carrier is determined to be the uplink carrier; or, if the frequency of the second SUL carrier is less than the frequency of the NUL carrier, and the measured RSRP is less than the RSRP threshold corresponding to the second SUL carrier, the second SUL carrier is determined to be the uplink carrier.

17. The method according to any one of claims 11, 12, 15, and 16, characterized in that, If the measured RSRP does not satisfy some or all of the relationships in at least one relation, the uplink carrier is the NUL carrier, wherein one of the at least one relations is the relationship between the frequency of a SUL carrier, the frequency of the NUL carrier, the RSRP threshold corresponding to the SUL carrier, and the measured RSRP.

18. A communication device, characterized in that, It includes a unit or module for performing the method as described in any one of claims 1 to 6, or includes a unit or module for performing the method as described in any one of claims 7 to 10, or includes a unit or module for performing the method as described in any one of claims 11 to 17.

19. A communication device, characterized in that, It includes a processor and a memory; the memory is used to store one or more computer programs that, when the one or more computer programs are run, cause the method as described in any one of claims 1 to 6 to be executed, or cause the method as described in any one of claims 7 to 10 to be executed, or cause the method as described in any one of claims 11 to 17 to be executed.

20. A computer-readable storage medium, characterized in that, The computer-readable storage medium is used to store a computer program that, when run on a computer, causes the computer to perform the method as described in any one of claims 1 to 6, or causes the computer to perform the method as described in any one of claims 7 to 10, or causes the computer to perform the method as described in any one of claims 11 to 17.

21. A chip system, characterized in that, The device includes a processor coupled to a memory, the processor being configured to execute instructions in the memory to implement the method as described in any one of claims 1 to 6, or the method as described in any one of claims 7 to 10, or the method as described in any one of claims 11 to 17.

22. A computer program product, characterized in that, When the computer program product is run on a computer, it causes the method as described in any one of claims 1 to 6 to be executed, or causes the method as described in any one of claims 7 to 10 to be executed, or causes the method as described in any one of claims 11 to 17 to be executed.

Images