WO2022067583A1

WO2022067583A1 - Signal sending and receiving methods and apparatuses

Info

Publication number: WO2022067583A1
Application number: PCT/CN2020/119090
Authority: WO
Inventors: 陆绍中; 谢信乾; 郭志恒
Original assignee: 华为技术有限公司
Priority date: 2020-09-29
Filing date: 2020-09-29
Publication date: 2022-04-07
Also published as: CN116195342A

Abstract

The present application relates to signal sending and receiving methods and apparatuses. A terminal device receives configuration information of at least one SUL carrier from a network device, the configuration information of a first SUL carrier comprising indication information and a first RSRP threshold. The terminal device determines an uplink carrier according to at least one piece of indication information, a measured RSRP and at least one RSRP threshold, the uplink carrier being one of the at least one SUL carrier or being an NUL carrier. The terminal device sends an uplink signal to the network device on the uplink carrier. The embodiments of the present application provide a method for determining an uplink carrier. Regardless of whether the frequency of an SUL carrier is less than or greater than the frequency of an NUL carrier, according to the method provided in the embodiments of the present application, UE can determine an uplink carrier, thereby improving the success rate of UE determining an uplink carrier, so that the UE can normally send an uplink signal on the determined uplink carrier.

Description

A kind of signal transmission and reception method and device

technical field

The present application relates to the field of mobile communication technologies, and in particular, to a method and apparatus for transmitting and receiving signals.

Background technique

At present, in order to improve the coverage performance, especially the uplink coverage performance, a new radio (NR) cell can be configured with a supplementary uplink (SUL) carrier in addition to a normal uplink (NUL) carrier. 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 bandwidth part (BWP) of the NUL carrier and the SUL carrier respectively. The reference signal received power (reference signal received power, RSRP) threshold is included, and an uplink carrier is selected from the NUL carrier and the SUL carrier to initiate random access.

However, at present, the UE's understanding of the RSRP threshold is based on the fact that the frequency of the SUL carrier is lower than the frequency of the NUL carrier. If the frequency of the SUL carrier is higher than the frequency of the NUL carrier, the UE cannot select the uplink carrier, resulting in the UE unable to initiate random access. enter.

SUMMARY OF THE INVENTION

Embodiments of the present application provide a method and apparatus for transmitting and receiving signals, which are used to provide a way for a UE to determine an uplink carrier.

In a first aspect, a first signal sending method is provided. The terminal device receives configuration information of at least one SUL carrier from the network device, 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 RSRP threshold, and the first SUL carrier is Any one of the at least one SUL carrier. The terminal device determines an uplink carrier according to at least one indication information, measured RSRP and at least one RSRP threshold, and the uplink carrier is one of the at least one SUL carrier, or is a NUL carrier, wherein, in the first When the indication information corresponding to the SUL carrier indicates the first state, and the measured RSRP is greater than the first RSRP threshold, the uplink carrier is the first SUL carrier. The terminal device sends an uplink signal to the network device on the uplink carrier.

In this embodiment of the present application, the network device may indicate the state through indication information, and the state may 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 does not select the first SUL carrier. That is to say, the embodiment of the present application provides a method for determining the uplink carrier. Regardless of whether the frequency of the SUL carrier is less than the frequency of the NUL carrier or greater than the frequency of the NUL carrier, according to the method provided by the embodiment of the present application, the UE can determine the uplink carrier, Thus, the flexibility of the SUL carrier configuration and the success rate of the UE in determining the uplink carrier are improved, so that the UE can normally send the uplink signal on the determined uplink carrier.

In an optional implementation manner, when 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 uplink carrier is the The first SUL carrier.

The first state and the second state can also be regarded as two kinds of rules. If the indication information of a SUL carrier indicates the first state, the rule corresponding to the first state is used for the SUL carrier, that is, if the measured RSRP is greater than the SUL The RSRP threshold corresponding to the carrier, the terminal equipment can select the SUL carrier, otherwise the terminal equipment will not select the SUL carrier; and if the indication information of a SUL carrier indicates the second state, the SUL carrier uses the rules corresponding to the second state 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 does not select the SUL carrier. It can be seen that, regardless of whether the frequency of the SUL carrier is lower than the frequency of the NUL carrier or greater than the frequency of the NUL carrier, the UE can determine the uplink carrier according to the method provided by the embodiment of the present application.

In an optional implementation manner, the configuration information of the first SUL carrier further includes priority information of the first SUL carrier.

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 be determined according to the priority of each SUL carrier, for example, try to determine the SUL carrier with higher priority as the above-mentioned SUL carrier. The uplink carrier makes the signal quality of the uplink carrier selected by the terminal device better.

In an optional implementation manner, the terminal device determines the uplink carrier according to at least one indication information, measured RSRP, and at least one RSRP threshold, which may be implemented in the following manner: the terminal device determines the uplink carrier according to the at least one SUL carrier In order of priority from high to low, the measured RSRP is compared with the first RSRP threshold. In the case that the indication information corresponding to the first SUL carrier indicates the first state, if the measured RSRP is greater than the first RSRP threshold, the terminal device determines that the first SUL carrier is the uplink or, if the indication information corresponding to the first SUL carrier indicates the second state, if the measured RSRP is less than the first RSRP threshold, the terminal device determines that the first SUL carrier is the the upstream carrier.

In an optional implementation manner, in the case that 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 The device compares the measured RSRP with the second RSRP threshold; or, in the case that 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 a second RSRP threshold; wherein, the second RSRP threshold is a threshold corresponding to the second SUL carrier in the at least one SUL carrier, and the first SUL carrier The priority is higher than the priority of the second SUL carrier. In the case that 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 that the second SUL carrier is the uplink carrier, or, when the indication information corresponding to the second SUL carrier indicates the second state, the measured RSRP is less than the second RSRP threshold, and the terminal device determines that the second SUL carrier is the Upstream carrier.

When the terminal device compares the measured RSRP with the at least one RSRP threshold, it can compare the measured RSRP with the RSRP threshold in the at least one RSRP threshold in order of priority. Then, if it is determined that the measured RSRP does not meet the relationship between the RSRP threshold, the measured RSRP and the state indicated by the indication information, or 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 SUL carrier of the next priority in the order of priority from high to low. If 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 after comparing an RSRP threshold, or, in other words, after comparing an RSRP threshold, the terminal device determines that it has been able to After selecting the uplink carrier, the terminal device can determine the uplink carrier without performing the remaining comparison process. In this way, the efficiency of determining the uplink carrier by the terminal device can be improved, and because the comparison process can be reduced, the power consumption of the terminal device can be saved. In addition, the SUL carrier with higher priority may be determined by the terminal device, so the signal quality of the uplink carrier determined by the terminal device can also be improved in this way.

In an optional implementation manner, when the measured RSRP does not satisfy some or all of the at least one relationship, the uplink carrier is the NUL carrier, wherein the at least one relationship is the NUL carrier. One relationship is the relationship between the state indicated by the indication information corresponding to one SUL carrier, the RSRP threshold corresponding to the one SUL carrier, and the measured RSRP.

For example, for each RSRP threshold in all RSRP thresholds included in the 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 If the terminal device determines that the carrier cannot be selected, the terminal device may determine that the NUL carrier is the uplink carrier. That is to say, the terminal device can select the NUL carrier when it is determined that all SUL carriers do not meet the condition, and can make the selected uplink carrier be the SUL carrier as much as possible, so as to improve the uplink coverage performance. Or, for each RSRP threshold in the partial RSRP thresholds included in the 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 The carrier is the uplink carrier. In this case, the terminal device can select the NUL carrier when it is determined that some of the SUL carriers do not meet the conditions, thereby reducing the comparison process of the terminal device and saving the power consumption of the terminal device.

In a second aspect, a signal receiving method is provided. Sending configuration information of at least one supplementary uplink SUL carrier to the terminal device, where the configuration information of the at least one SUL carrier is used to determine the uplink 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. Receive an uplink signal from the terminal device on the uplink carrier, wherein, in the case that 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, the uplink carrier is the first SUL carrier.

In an optional implementation manner, when the indication information corresponding to the first SUL carrier indicates the second state, and the measured RSRP is less than the RSRP threshold corresponding to the first SUL carrier, the uplink The carrier is the first SUL carrier.

Regarding the technical effect brought by the second aspect or the corresponding embodiment, reference may be made to the introduction to the technical effect of the first aspect or the corresponding embodiment.

In a third aspect, a second signal sending method is provided. The terminal device determines the frequency of at least one SUL carrier and determines the frequency of the NUL carrier. The terminal device determines an uplink carrier according to the frequency of the at least one SUL carrier, the frequency of the NUL carrier, the 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, the at least one RSRP threshold is received by the terminal device from the network device, and the at least one RSRP threshold corresponds to the at least one SUL carrier. The terminal device sends an uplink signal to the network device on the uplink carrier.

In the embodiment of the present application, the network device does not need to indicate the selection rule, and the terminal device can determine the selection rule according to the frequency of the SUL carrier and the frequency of the NUL carrier, so as to select the uplink carrier. That is to say, the embodiment of the present application provides a method for determining the uplink carrier. Regardless of whether the frequency of the SUL carrier is lower than the frequency of the NUL carrier or greater than the frequency of the NUL carrier, according to the method provided by the embodiment of the present application, the terminal device can determine the uplink carrier. , thereby improving the success rate of the terminal device in determining the uplink carrier, so that the terminal device can normally send the uplink signal on the determined uplink carrier. Moreover, since the network device does not need to indicate the selection rule, signaling overhead can also be saved.

In an optional implementation manner, the terminal device determines the uplink carrier according to the frequency of the at least one SUL carrier, the frequency of the NUL carrier, the measured RSRP, and the RSRP threshold, which may be implemented in the following manner: In the case where 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, the The uplink carrier is the first SUL carrier.

In an optional implementation manner, the terminal device determines the uplink carrier according to the frequency of the at least one SUL carrier, the frequency of the NUL carrier, the measured RSRP, and the RSRP threshold, which may be implemented in the following manner: In the case where 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, the The uplink carrier is the first SUL carrier.

It can be considered that the terminal equipment predicts two rules. If the frequency of a SUL carrier is greater than the frequency of the NUL carrier, one of the rules is used for the SUL carrier, that is, if the measured RSRP is greater than the RSRP threshold corresponding to the SUL carrier, then the terminal equipment The SUL carrier can be selected, otherwise the terminal device does not select the SUL carrier; and if the frequency of a SUL carrier is less than the frequency of the NUL carrier, the other rule is used for the SUL carrier, that is, if the measured RSRP is less than the SUL carrier The RSRP threshold corresponding to the carrier, the terminal equipment can select the SUL carrier, otherwise the terminal equipment will not select the SUL carrier. It can be seen that, regardless of whether the frequency of the SUL carrier is lower than the frequency of the NUL carrier or greater than the frequency of the NUL carrier, the UE can determine the uplink carrier according to the method provided by the embodiment of the present application.

In an optional implementation manner, the terminal device further receives first information from the network device, where the first information is used to indicate the priority of the at least one SUL carrier.

In an optional implementation manner, the terminal device determines the uplink carrier according to the frequency of the at least one SUL carrier, the frequency of the NUL carrier, the measured RSRP, and at least one RSRP threshold, which may be implemented in the following manner: The terminal device compares the measured RSRP with the first RSRP threshold according to the priority of the at least one SUL carrier from high to low. In the case where the frequency of the first 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, the terminal device determines that the first SUL carrier is the uplink carrier; or, in the case where the frequency of the first 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, the terminal device determines The first SUL carrier is the uplink carrier.

In an optional implementation manner, when the frequency of the first SUL carrier is greater than the frequency of the NUL carrier, if 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, if 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 the second RSRP threshold; wherein the second RSRP threshold is the threshold corresponding to the second SUL carrier in the at least one SUL carrier , the priority of the first SUL carrier is higher than the priority of the second SUL carrier. In the case that the frequency of the second SUL carrier is greater than the frequency of the NUL carrier, if the measured RSRP is greater than the RSRP threshold corresponding to the second SUL carrier, the terminal device determines that the second SUL carrier is The uplink carrier, or, when the frequency of the second SUL carrier is less than the frequency of the NUL carrier, the measured RSRP is less than the RSRP threshold corresponding to the second SUL carrier, and the terminal device determines that the The second SUL carrier is the uplink carrier.

In an optional implementation manner, when the measured RSRP does not satisfy some or all of the at least one relationship, the uplink carrier is the NUL carrier, wherein the at least one relationship is the NUL carrier. One relationship is the relationship between the frequency of one SUL carrier, the frequency of the NUL carrier, the RSRP threshold corresponding to the one SUL carrier, and the measured RSRP.

Regarding the technical effects brought by the corresponding embodiments of the third aspect, reference may be made to the introduction to the technical effects of the first aspect or the corresponding embodiments.

In a fourth aspect, a communication device is provided. The communication device may be the terminal device described in any one of the first to third aspects above, or 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 method. For example, the communication device includes a processing unit (sometimes also referred to as a processing module) and a transceiving unit (sometimes also referred to as a transceiving module).

The processing unit is configured to receive configuration information of at least one SUL carrier from the network device through the transceiver unit, determine the uplink carrier according to the at least one indication information, the measured RSRP and the at least one RSRP threshold, and also use for sending an uplink signal to the network device on the uplink carrier through the transceiver unit.

Alternatively, the processing unit is configured to determine the frequency of at least one SUL carrier and determine the frequency of the NUL carrier, according to the frequency of the at least one SUL carrier, the frequency of the NUL carrier, the measured RSRP, and at least one RSRP threshold, An uplink carrier is determined, and an uplink signal is sent to the network device on the uplink carrier by the transceiver unit.

For another example, the communication apparatus includes: a processor, coupled to the memory, for executing instructions in the memory, so as to implement the method executed by the terminal device in any one of the first to third aspects above. Optionally, the communication device further includes other components, such as an antenna, an input and output module, an interface, and the like. These components may be hardware, software, or a combination of software and hardware.

In a fifth aspect, a communication device is provided. The communication apparatus may be the network device described in any one of the first to third aspects above. The communication device has the function of the above-mentioned network device. The network equipment is, for example, a base station, or a baseband device in a base station. In an optional implementation manner, the communication device includes a baseband device and a radio frequency device. In another optional implementation manner, the communication apparatus includes a processing unit (sometimes also called a processing module) and a transceiver unit (sometimes also called a transceiver module).

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 further configured to receive information from the terminal device on the uplink carrier up signal.

In yet another optional implementation manner, the communication device includes a storage unit and a processing unit, and the processing unit is configured to couple with the storage unit and execute programs or instructions in the storage unit to enable the communication device to perform the above The functionality of the network device.

In a sixth aspect, a computer-readable storage medium is provided, the computer-readable storage medium is used to store a computer program or instruction, and when it is executed, the method performed by the terminal device or the network device in the above aspects is realized. .

In a seventh aspect, there is provided a computer program product comprising instructions which, when run on a computer, cause the methods of the above aspects to be implemented.

Description of drawings

1 is a schematic diagram of a scenario in which one SUL carrier is configured for a single cell;

FIG. 2 is a schematic diagram of an application scenario of an embodiment of the present application;

3 is a flowchart of a first signal sending and receiving method provided by an embodiment of the present application;

FIG. 4 is a schematic diagram of including configuration information in the supplementary uplink parameters and sending in an embodiment of the present application;

5 is a schematic diagram of the configuration information further including priority information in an embodiment of the present application;

6 is a schematic diagram of a scenario in which multiple SUL carriers are configured for a single cell in an embodiment of the present application;

FIG. 7 is a flowchart of a second method for sending and receiving signals according to an embodiment of the present application;

FIG. 8 is a schematic block diagram of a communication apparatus provided by an embodiment of the present application;

FIG. 9 is a schematic block diagram of a terminal device provided by an embodiment of the present application;

FIG. 10 is a schematic block diagram of a network device provided by an embodiment of the present application.

Detailed ways

The technologies provided in the embodiments of the present application can be applied to a communication system, where a communication device (such as a terminal device) is connected to one or more core networks (CN) via one or more access network (AN) devices device to enable communication between multiple communication devices. The communication system may, for example, support 2G, 3G, 4G, or 5G (also sometimes referred to as NR) access technology communication systems, wireless fidelity (WiFi) systems, 3rd generation partnership project, 3GPP) related cellular system, a communication system that supports the fusion of multiple wireless technologies, or a future-oriented evolution system.

Hereinafter, some terms in the embodiments of the present application will be explained, so as to facilitate the understanding of those skilled in the art.

In this embodiment of the present application, a terminal device is a device with a wireless transceiver function, which may be a fixed device, a mobile device, a handheld device, a wearable device, a vehicle-mounted device, or a wireless device (for example, a communication module or a wireless device) built into the above-mentioned device. system-on-chip, etc.). The terminal device is used to connect people, things, machines, etc., and can be widely used in various scenarios, such as but not limited to the following scenarios: cellular communication, device-to-device communication (device-to-device, D2D), vehicle-to-everything (vehicle to everything, V2X), machine-to-machine/machine-type communications (M2M/MTC), Internet of things (internet of things, IoT), virtual reality (virtual reality, VR) , Augmented reality (AR), industrial control (industrial control), unmanned driving (self driving), telemedicine (remote medical), smart grid (smart grid), smart furniture, smart office, smart wear, smart transportation , terminal equipment for smart city, drone, robot and other scenarios. The terminal equipment may sometimes be referred to as user equipment (user equipment, UE), a terminal, an access station, a UE station, a remote station, a wireless communication device, or a user equipment, etc. The device is described by taking the UE as an example.

In this embodiment of the present application, the apparatus for implementing the function of the UE may be the UE, or may be an apparatus capable of supporting the UE to implement the function, such as a chip system, and the apparatus may be installed in the UE. In the technical solutions provided by the embodiments of the present application, the technical solutions provided by the embodiments of the present application are described by taking the UE as an example as the apparatus for implementing the functions of the UE.

The network devices in the embodiments of the present application include, for example, access network devices and/or core network devices. The access network device is a device with a wireless transceiver function, and is used to communicate with the terminal device. The access network equipment includes, but is not limited to, the base station (BTS, Node B, eNodeB/eNB, or gNodeB/gNB), the transmission reception point (TRP), the 3GPP subsequent evolution base station, and the WiFi system in the above-mentioned communication system. access nodes, wireless relay nodes, wireless backhaul nodes, etc. The base station may be: a macro base station, a micro base station, a pico base station, a small base station, a relay station, and the like. Multiple base stations may support the aforementioned networks of the same access technology, or may support the aforementioned networks of different access technologies. A base station may contain one or more co-sited or non-co-sited transmission reception points. The network device may also be a wireless controller, a centralized unit (centralized unit, CU), and/or a distributed unit (distributed unit, DU) in a cloud radio access network (cloud radio access network, CRAN) scenario. The network device can also be a server, a wearable device, or a vehicle-mounted device. For example, a network device in the V2X technology may be a road side unit (RSU). The following description will be given by taking the access network device as a base station as an example. The multiple network devices in the communication system may be base stations of the same type, or may be base stations of different types. The base station can communicate with the UE, and can also communicate with the UE through the relay station. A UE may communicate with multiple base stations in different access technologies. The core network equipment is used to implement functions such as mobility management, data processing, session management, policy and charging. The names of devices implementing core network functions in systems with different access technologies may be different, which are not limited in this embodiment of the present application. Taking the 5G system as an example, the core network equipment includes: an access and mobility management function (AMF), a session management function (SMF), or a user plane function (UPF) Wait.

In this embodiment of the present application, the apparatus for implementing the function of the network device may be the network device, or may be an apparatus capable of supporting the network device to implement the function, such as a chip system, and the apparatus may be installed in the network device. In the technical solutions provided by the embodiments of the present application, the technical solutions provided by the embodiments of the present application are described by taking the device for realizing the function of the network device being a network device as an example.

In this application, the number of nouns, unless otherwise specified, means "singular nouns or plural nouns", ie "one or more". "At least one" means one or more, and "plurality" means two or more. "And/or", which describes the relationship of the associated objects, indicates that there can be three kinds of relationships, for example, A and/or B, it can indicate that A exists alone, A and B exist at the same time, and B exists alone, where A, B can be singular or plural. The character "/" generally indicates that the associated objects are an "or" relationship. For example, A/B, means: A or B. "At least one item(s) below" or similar expressions thereof refer to any combination of these items, including any combination of single item(s) or plural items(s). 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, c Can be single or multiple.

And, unless otherwise stated, ordinal numbers such as “first” and “second” mentioned in the embodiments of the present application are used to distinguish multiple objects, and are not used to limit the size, content, order, and timing of multiple objects , priority or importance, etc. For example, the first SUL carrier and the second SUL carrier may be the same SUL carrier or different SUL carriers, and this name does not indicate the frequency, priority or importance of the two SUL carriers, etc. s difference.

Compared with long term evolution (LTE) and long term evolution advanced (LTE-A) wireless communication systems, 5G NR wireless communication systems are deployed in higher frequency bands to obtain larger communication bandwidth. However, high frequency bands will lead to larger path loss, penetration loss, etc., making the coverage performance of NR far inferior to that of LTE and LTE-A.

At present, in order to improve the coverage performance, especially the uplink coverage performance, in addition to a NUL carrier, an NR cell can also be configured with an additional SUL carrier, and the frequency of the SUL carrier is lower than that of the NUL carrier, which can effectively improve the uplink of NR. Override performance. For an NR cell configured with a SUL carrier, random access resources are configured on the initial access BWP of the NUL carrier and the SUL carrier, respectively. The UE can select an uplink from the NUL carrier and the SUL carrier according to the RSRP threshold in the system message. The carrier initiates random access.

As shown in FIG. 1 , it is a scenario in which one SUL carrier is configured for a single cell, and the frequency of the SUL carrier is lower than the frequency 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 combines the RSRP with the system message compared to the RSRP threshold (rsrp-ThresholdSSB-SUL). If the RSRP is less than the RSRP threshold (RSRP<rsrp-ThresholdSSB-SUL), the UE selects the random access resource on the SUL carrier to send the preamble, otherwise, the UE selects the random access resource on the NUL carrier to send the preamble. For example, in Figure 1, if the UE is located in the ellipse area to the left, 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; and if the UE is located in the ellipse area to the right, then The distance between the UE and the base station is relatively far, for example, the UE may be at the edge of a cell, and the RSRP measured by the UE may be less than the RSRP threshold.

It can be seen that the current UE's understanding of the RSRP threshold is based on the fact that the frequency of the SUL carrier is lower than the frequency of the NUL carrier. If the frequency of the SUL carrier is higher than the frequency of the NUL carrier, the UE cannot select the uplink carrier, so that the UE cannot initiate random access.

In view of this, the technical solutions of the embodiments of the present application are provided. In this embodiment of the present application, the network device may indicate the state through indication information, and the state may 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 does not select the first SUL carrier. That is to say, the embodiment of the present application provides a method for determining the uplink carrier. Regardless of whether the frequency of the SUL carrier is less than the frequency of the NUL carrier or greater than the frequency of the NUL carrier, according to the method provided by the embodiment of the present application, the UE can determine the uplink carrier, Thus, the flexibility of the SUL carrier configuration and the success rate of the UE in determining the uplink carrier are improved, so that the UE can normally send the uplink signal on the determined uplink carrier.

The technical solutions provided in the embodiments of this application can be applied to 4G systems, such as LTE systems, or can be applied to 5G systems, such as NR systems, or can also be applied to next-generation mobile communication systems or other similar communication systems. No restrictions. In addition, the technical solutions provided in the embodiments of the present application can be applied to a device-to-device (D2D) scenario, such as an NR-D2D scenario, or can be applied to a vehicle to everything (V2X) scenario, such as NR-V2X scenarios, etc., for example, can be applied to the Internet of Vehicles, such as V2X, vehicle-to-vehicle (V2V), etc., or can be used in fields such as intelligent driving, assisted driving, or intelligent networked vehicles. In the following introduction process, the application of the technical solutions provided by the embodiments of the present application to the LTE system or the NR system is taken as an example.

Please refer to FIG. 2 , which is an application scenario of the embodiment of the present application. FIG. 2 includes access network equipment, core network equipment and UE. FIG. 2 takes one UE as an example, and there may actually be multiple UEs. The UE is configured with a NUL carrier and is also configured with at least one SUL carrier. The UE can select an uplink carrier from at least one SUL carrier and the NUL carrier, and then send an uplink signal on the uplink carrier, and the access network device receives the uplink carrier. Signal.

The access network device, for example, works in the Evolved UMTS terrestrial radio access (E-UTRA) system, or works in the NR system, or works in the next generation communication system or other communication systems middle. The access network device is, for example, a base station. The access network equipment corresponds to different equipment in different systems, for example, in a 4G system, it may correspond to an eNB, and in a 5G system, it corresponds to an access network equipment in 5G, such as a gNB. Of course, the technical solutions provided in the embodiments of the present application can also be applied to future mobile communication systems, so the access network equipment in FIG. 2 can also correspond to network equipment in future mobile communication systems. FIG. 2 takes the access network device being a base station as an example. In fact, referring to the foregoing introduction, the access network device may also be a device such as an RSU. In addition, the UE in FIG. 2 takes a mobile phone as an example. In fact, according to the foregoing description of the UE, it can be known that the UE in the embodiment of the present application is not limited to the mobile phone.

The methods provided by the embodiments of the present application are described below with reference to the accompanying drawings. In the drawings corresponding to the various embodiments of the present application, all steps represented by dotted lines are optional steps. In various embodiments of the present application, the UE may be configured with one NUL carrier, and may be configured with at least one SUL carrier (or may be configured with one or more SUL carriers). If the number of at least one SUL carrier is 1, the frequency of the SUL carrier may be higher than the frequency of the NUL carrier, or the frequency of the SUL carrier may also be lower than the frequency of the NUL carrier. If the number of at least one SUL carrier is greater than 1, the frequencies of all SUL carriers in at least one SUL carrier may be greater than the frequency of the NUL carrier, or the frequencies of all SUL carriers in at least one SUL carrier may be lower than the frequency of the NUL carrier or, the frequency of part of the SUL carriers in at least one SUL carrier is 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.

Embodiments of the present application provide a first method for sending and receiving signals. Please refer to FIG. 3 , which is a flowchart of the method. In the following introduction process, the method is applied to the network architecture shown in FIG. 2 as an example.

For the convenience of introduction, in the following, the method is performed by the network device and the UE as an example. This is because the embodiment of the present application is applied to the network architecture shown in FIG. 2 as an example. Therefore, the network device described below is, for example, an access network device in the network architecture shown in FIG. 2 , and the UE described below may be a UE in the network architecture shown in FIG. 2 .

S31. The network device sends configuration information of at least one SUL carrier, and correspondingly, the UE receives configuration information of at least one SUL carrier from the network device. The configuration information of at least one SUL carrier can be used to determine the uplink carrier. Wherein, the network device can send the configuration information of at least one SUL carrier by unicast, then the UE can receive the configuration information of at least one SUL carrier; or, the network device may also send the configuration information of at least one SUL carrier by broadcast, then There may be multiple UEs that can receive the configuration information of at least one SUL carrier, and the UE described in S31 is one of the UEs.

The network device may send configuration information of at least one SUL carrier, where one SUL carrier corresponds to one configuration information, or in other words, one configuration information can be used to configure one SUL carrier, that is, the configuration information and the SUL carrier are in a one-to-one correspondence . For example, the at least one SUL carrier includes a first SUL carrier, and the first SUL carrier is, for example, any one SUL carrier in the at least one SUL carrier. The configuration information of the first SUL carrier may include indication information, and may also include the first RSRP threshold. The indication information may indicate the first state or the second state. Different states correspond to different selection rules. The first RSRP threshold is the first SUL carrier. Corresponding RSRP threshold. In the configuration information of at least one SUL carrier, different configuration information may include corresponding indication information, and include corresponding RSRP thresholds, that is, parameters included in the configuration information of at least one SUL carrier (the parameters here include indication information and RSRP). Threshold) may be the same, but the value of the parameter (for example, 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 further includes a second SUL carrier, and the configuration information of the second SUL carrier may also include indication information and an RSRP threshold. In order to distinguish, the indication information included in the configuration information of the first SUL carrier is called indication information 1 , 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 is RSRP threshold 2, then RSRP threshold 1 and RSRP threshold 2 may be different, and the state indicated by indication information 1 and the state indicated by indication information 2 may be the same or different. For example, indication information 1 and indication information 2 both indicate the first state or Both indicate the second state. For another example, the indication information 1 indicates the first state and the indication information 2 indicates the second state, or the indication information 1 indicates the second state and the indication information 2 indicates the first state.

For one SUL carrier, the network device will send the supplementary uplink parameters corresponding to the SUL carrier. For example, the configuration information described in the embodiments of this application is included in the supplementary uplink parameters corresponding to the SUL carrier, and one SUL carrier corresponds to one SUL carrier. The uplink parameters are supplemented, so that when at least one SUL carrier includes N SUL carriers, the network device sends N supplementary uplink parameters, which is equivalent to sending N pieces of configuration information. For example, the network device sends at least one supplementary uplink parameter through a system message, such as a system information block (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, so that when at least one SUL carrier includes N SUL carriers, the N SUL carriers correspond to only one message for supplementing the uplink parameter, In this case, this message includes N pieces of sub-information, which are independent of each other, and one sub-information corresponds to one SUL carrier, that is, one supplementary uplink parameter corresponding to one SUL carrier can be regarded as a piece of information included in this message sub information. For example, N supplementary uplink parameters are included in N information elements of the system message, and one information element includes one supplementary uplink parameter, so that the UE will not confuse different supplementary uplink parameters. The information element described here is, for example, an information element (information element, IE).

The network device should include a configuration information in the supplementary uplink parameter corresponding to a SUL carrier. For example, one way is that the network device includes the configuration information in the random access configuration parameter (RACH-ConfigCommon) in the supplementary uplink parameter. . For example, reference may be made to FIG. 4 , which is a schematic diagram of supplementary uplink parameters corresponding to one SUL carrier. The supplementary uplink parameters include random access configuration parameters, and the random access configuration parameters include configuration information corresponding to the SUL carrier, the configuration information including the RSRP threshold corresponding to the SUL carrier, and the indication information corresponding to the SUL carrier. For example, the threshold corresponding to the SUL carrier may be represented as rsrp-ThresholdSSB-SUL, and the indication information corresponding to the SUL carrier may be represented as rsrp-ConditionSSB-SUL. Of course, the network device may also include the configuration information in other parameters included in the supplementary uplink parameters, or the network device may also add a new parameter, or a new cell, in the supplementary uplink parameter, and the configuration information is included by the newly added parameter .

The indication information may indicate the selection rule corresponding to one SUL carrier. In this embodiment of the present application, the indication information may indicate the first state or the second state, and the first state and the second state may be understood as two selection rules. These two states are, for example:

In the first state, when the measured RSRP is greater than the RSRP threshold corresponding to the SUL carrier, the SUL carrier is selected; otherwise, the SUL carrier is not selected.

In the second state, when the measured RSRP is less than the RSRP threshold corresponding to the SUL carrier, the SUL carrier is selected, otherwise the SUL carrier is not selected.

Wherein, if the indication information corresponding to a SUL carrier indicates the first state, it can be understood that if the RSRP measured by the UE is greater than the RSRP threshold corresponding to the SUL carrier, the SUL carrier is selected, otherwise, the SUL carrier is not selected. Similarly, if the indication information corresponding to a SUL carrier indicates the second state, it can be understood that if the RSRP measured by the UE is less than the RSRP threshold corresponding to the SUL carrier, the SUL carrier is selected, otherwise, the SUL carrier is not selected. It can be seen that in the embodiment of the present application, the network device can indicate the corresponding selection rule, or the corresponding state, without the need for the UE to determine the selection rule corresponding to a SUL carrier, which can reduce the workload of the UE, and can make the present application implement The method provided in this example is applied to more UEs with limited capabilities. For example, UEs with limited capabilities due to reduced bandwidth, reduced number of antennas, or performance impacts such as half-duplex mode.

Generally speaking, the higher the frequency of the uplink carrier, the higher the corresponding RSRP threshold. Therefore, if the frequency of a SUL carrier is greater than the frequency of the NUL carrier, the indication information corresponding to the SUL carrier will indicate the first state; and if the frequency of a SUL carrier is less than the frequency of the NUL carrier, the indication information corresponding to the SUL carrier will be Indicates the second state. That is to say, these two states may actually be related to the frequency of the SUL carrier and the frequency of the NUL carrier, but the UE may not perceive the frequency of the SUL carrier and the frequency of the NUL carrier, and only needs to judge according to the corresponding state. For the UE, less information needs to be perceived, and the implementation is relatively simple.

The indication information may include the content of the indicated state. For example, if the indication information is to indicate the first state, the indication information includes information used to indicate that the measured RSRP is greater than the RSRP threshold corresponding to the SUL carrier. In this way, the instructions can be made clearer. Alternatively, the content of the first state and the content of the second state may be pre-configured in the UE, or specified by a protocol, and the indication information does not need to include the specific content of the state. In this case, for example, the indication information may include one or more bits, and different state values of the one or more bits are used to indicate different states. Taking the indication information including one bit as an example, for example, if the bit takes a value of "1", it indicates that the first state is indicated, and if the bit takes a value of "0", it indicates that the second state is indicated. In this way, the overhead caused by the indication information can be saved.

As an optional implementation manner, the network device may also send priority information of at least one SUL carrier. For example, the priority information of one SUL carrier may also be included in the configuration information of the SUL carrier, that is, the configuration information of at least one SUL carrier sent by the network device includes the priority information of at least one SUL carrier, of which one The configuration information includes priority information, and the priority information included in the configuration information is used to indicate the priority of the SUL carrier corresponding to the configuration information. For example, the at least one SUL carrier includes the first SUL carrier, and the configuration information of the first SUL carrier may include priority information of the first SUL carrier.

If the priority information is included in the configuration information, and the configuration information is included in the random access configuration parameters supplementing the uplink parameters, then the equivalent priority information is also included in the random access configuration parameters. Then, 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 together through the supplementary uplink parameters of the SUL carrier, so that the UE can obtain these information together. For example, reference may be made to FIG. 5 , which is a schematic diagram of supplementary uplink parameters corresponding to one SUL carrier. The supplementary uplink parameters include random access configuration parameters, and the random access configuration parameters include configuration information corresponding to the SUL carrier, and the configuration information includes the RSRP threshold corresponding to the SUL carrier, the indication information corresponding to the SUL carrier, and the SUL carrier. Carrier priority information. For example, the threshold corresponding to the SUL carrier may be represented as rsrp-ThresholdSSB-SUL, the indication information corresponding to the SUL carrier may be represented as rsrp-ConditionSSB-SUL, and the priority information of the SUL carrier may be represented as rsrp-PrioritySSB-SUL. Of course, the network device may also include the priority information in other parameters included in the supplementary uplink parameters, or the network device may also add new parameters or new cells in the supplementary uplink parameters. cells to include priority information.

In this manner, one configuration information may include the priority of one SUL carrier, and different configuration information corresponds to different SUL carriers, so that the indication of the priority of each SUL carrier is clearer.

There is also a possibility that the priority of at least one SUL carrier may be default or specified by a protocol, so the network device does not need to send priority information. Alternatively, the priority may not be set for at least one SUL carrier, and the network device does not need to send priority information.

S32. The UE determines the uplink carrier according to at least one indication information, the measured RSRP and at least one RSRP threshold. For example, the uplink carrier determined by the UE is called the first uplink carrier.

The network device also sends a reference signal, which the UE can then receive from the network device. The reference signal is, for example, a synchronization signal block (synchronization signal block, SSB) or a channel state information reference signal (channel state information reference signal, CSI-RS), etc. The step of sending the reference signal by the network device may occur before S31, or occur at After S31, or at the same time as S31.

After receiving the reference signal, the UE may measure the reference signal to obtain the measured RSRP. Then, if at least one SUL carrier does not correspond to a priority, for example, the network device does not send at least one priority information, or the priority of at least one SUL carrier is not defaulted, and the protocol does not specify the priority of at least one SUL carrier, the UE can according to The first uplink carrier is determined by 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, for example, the UE receives at least one priority information, or determines the priority of at least one SUL carrier by a default method or a method specified in a protocol, etc., the UE may, according to the at least one indication information , the measured RSRP, the priority of at least one SUL carrier, and the at least one RSRP threshold to determine the first uplink carrier.

For a SUL carrier, whether the UE can select the 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 may compare the measured RSRP with some or all of the RSRP thresholds in the at least one RSRP threshold in any order, and determine the first uplink carrier according to the comparison result. an upstream carrier.

For example, the UE may compare the measured RSRPs with all RSRP thresholds in at least one RSRP threshold in any order, and after all the comparisons are completed, determine the first uplink carrier according to all the 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, SUL2 corresponds to RSRP threshold 2, the indication information corresponding to SUL0 indicates the first state, and the indication information corresponding to SUL1 indicates the second state, The indication information corresponding to SUL2 indicates the second state. Because this is the case where there is no priority, the chances of each uplink carrier being selected should be equal, so the UE can compare the measured RSRP with the three RSRP thresholds respectively. limit. For example, the UE 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 may select SUL0, otherwise, the UE does not select SUL0. 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. The UE compares the measured RSRP with the RSRP threshold 2 to determine whether the measured RSRP is less than the RSRP threshold 2. If the measured RSRP is less than the RSRP threshold 2, the UE may select SUL2, otherwise, the UE does not select SUL2.

For example, as shown in FIG. 6 , for a scenario in which multiple SUL carriers are configured for a single cell, for example, the multiple SUL carriers include SUL0 and SUL1, where the frequency of SUL0 is higher than that of NUL, and the frequency of SUL1 is lower than that of NUL. Then, the indication information configured for SUL0 by the network device indicates the first state, and the indication information configured for SUL1 indicates the second state. Before initiating random access, the UE first measures the SSB or CSI-RS to obtain the measured RSRP, and then the UE compares the measured RSRP with an RSRP threshold of 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. In addition, the UE compares this measured RSRP to an RSRP threshold of 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 the RSRP threshold 0 and less than the RSRP threshold 1, the UE determines that SUL1 is the first uplink carrier, or the measured RSRP threshold is less than the RSRP threshold 0 and greater than the RSRP threshold 1, then the UE determines that the NUL is the first uplink carrier Upstream carrier.

For example, in Figure 6, if the UE is located in the ellipse area on the left, the distance between the UE and the base station is relatively close, and the RSRP measured by the UE may be greater than the RSRP threshold 0; if the UE is located in the middle ellipse area, the UE and the base station If the distance from the base station is moderate, the RSRP measured by the UE may be greater than the RSRP threshold of 0 and less than the RSRP threshold of 1; and if the UE is located in the ellipse area to the right, the distance between the UE and the base station is relatively long, for example, the UE may be at the edge of the cell , the RSRP measured by the UE may be less than the RSRP threshold 1.

The RSRP measured by the UE may only satisfy the selection rule of one of the SUL carriers, then the UE may determine that the SUL carrier is 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, SUL2 corresponds to RSRP threshold 2, and the indication information corresponding to SUL0 indicates the first state, and the indication information corresponding to SUL1 and SUL2 Indicates the second state. If the RSRP measured by the UE is greater than the RSRP threshold 0, and does not meet the RSRP threshold 1 or less than the RSRP threshold 2, then the UE determines that SUL0 is the first uplink carrier.

Alternatively, the RSRP measured by the UE may also satisfy the selection rules of multiple SUL carriers, so the UE may determine one of the SUL carriers as the first uplink carrier, for example, by random determination, or it may also determine that the frequency is higher or lower SUL carrier is the first uplink carrier. For example, if the RSRP measured by the UE is not greater than the RSRP threshold 0, and less than the RSRP threshold 1, and less than the RSRP threshold 2, then the UE may randomly determine SUL1 or SUL2 as the first uplink carrier, or the UE may determine the frequency between SUL1 and SUL2 The higher or lower is the first uplink carrier.

Alternatively, the RSRP measured by the UE may not satisfy the selection rules of all SUL carriers, and the UE may determine the NUL carrier as the first uplink carrier. The selection rule of a SUL carrier can also be regarded 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 none of SUL0, SUL1 and SUL2 is selected after comparing RSRP threshold 0, RSRP threshold 1 and RSRP threshold 2, the UE can select the NUL carrier as the first uplink carrier.

In the above example, the UE determines the first uplink carrier 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 a part of the at least one RSRP threshold.

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 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. Because this is the case where there is no priority, the chances of each uplink carrier being selected should be equal, so when comparing, 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 is that the measured RSRP is less than the RSRP threshold 0. Next, 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 is that the measured RSRP is less than the RSRP threshold 1, and the selection rule corresponding to SUL2 is to select SUL2 if the measured RSRP is greater than the RSRP threshold 2, then, since the RSRP threshold 1 < RSRP threshold 2, since the measured RSRP is already less than the RSRP threshold 1, it is impossible to be greater than the RSRP threshold 2, so the UE does not need to compare the measured RSRP with the RSRP threshold 2, but can determine SUL1 as the first uplink carrier.

In this case, the RSRP measured by the UE may only satisfy the selection rule of one of the SUL carriers, or may also satisfy the selection rule of multiple SUL carriers. If the selection rule of multiple SUL carriers is satisfied, how does the UE determine For the first uplink carrier, reference may be made to the foregoing introduction.

In the above example, although the UE may be able to determine the first uplink carrier after comparing the measured RSRP with a partial RSRP threshold, if the first uplink carrier is a NUL carrier, the UE still needs to compare the measured RSRP with the full RSRP After the thresholds are compared, if none of the selection rules are met, it can be determined that the NUL carrier is the first uplink carrier. In addition, the embodiment of the present application provides another way. In this way, if the UE determines the first uplink carrier without considering the priority of the SUL carrier, the UE may also measure the It can be determined that the NUL carrier is the first uplink carrier after the RSRP is compared with a part of the RSRP thresholds in at least one RSRP threshold, without comparing all the RSRP thresholds.

For example, the UE records all SUL carriers whose corresponding indication information indicates the first state as a class A SUL carrier, and records the SUL carrier with the smallest corresponding RSRP threshold among the class A SUL carriers as a SUL_A carrier. In addition, the SUL carriers whose corresponding indication information indicates the second state are all denoted as B-type carriers, and the SUL carrier with the largest corresponding RPRP threshold among the B-type SUL carriers is denoted as SUL_B carrier. The UE sequentially 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 comparing the measured RSRP with the RSRP threshold corresponding to the SUL_B carrier, if the measurement The RSRP does not meet the relationship between the RSRP threshold corresponding to the SUL_A carrier, the measured RSRP and the corresponding state, and the measured RSRP does not meet the RSRP threshold corresponding to the SUL_B carrier, the measured RSRP and the relationship between the corresponding states, then The UE may determine that the NUL carrier is the first uplink carrier, and if there is an uncompared RSRP threshold, no further comparison is required.

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, SUL3 corresponds to RSRP threshold 3, the indication information corresponding to SUL0 indicates the first state, and SUL1 The corresponding indication information indicates the second state, the indication information corresponding to SUL2 indicates the first state, and the indication information corresponding to SUL3 indicates the second state. Then the UE records SUL0 and SUL2 as class A carriers, and records SUL1 and SUL3 as class B carriers. For example, RSRP threshold 0>RSRP threshold 2, and RSRP threshold 1>RSRP threshold 3, the UE records SUL2 as the SUL_A carrier and SUL1 as the SUL_B carrier. The UE sequentially compares the measured RSRP with at least one RSRP threshold in any order. For example, the UE first compares the measured RSRP with the RSRP threshold 0. For example, the comparison result is that the measured RSRP is less than the RSRP threshold 0, then the UE does not select SUL0, and will The measured RSRP is compared to an RSRP threshold of 1. For example, the comparison result is that the measured RSRP is greater than the RSRP threshold 1, the UE does not select SUL1, and compares the measured RSRP with the RSRP threshold 2. For example, the comparison result is that the measured RSRP is less than the RSRP threshold 2. At this time, the comparison between the SUL_A carrier and the SUL_B carrier has ended, and neither of them conforms to the selection rule. The UE can determine that the NUL carrier is the first uplink carrier. No need to compare the RSRP threshold 3.

If the UE determines the first uplink carrier in consideration of the priority of the SUL carrier, the UE may compare the measured RSRP with some or all of the RSRP thresholds in the at least one RSRP threshold in the order of priority from high to low, respectively. , and determine the first uplink carrier according to the comparison result. In this manner, the UE may determine the first uplink carrier after comparing the measured RSRP with all of the at least one RSRP threshold, or may compare the measured RSRP with a part of the at least one RSRP threshold After the comparison, the first uplink carrier can be determined.

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 the case of the existence of priorities, when comparing, the UE may compare the measured RSRP with the RSRP threshold in order from high to low priority. For example, because SUL0 has the highest priority, 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 is that the measured RSRP is less than the RSRP threshold 0. Next, 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 is that the measured RSRP is less than the RSRP threshold 1, then the UE can determine that SUL1 is the first uplink carrier, and there is no need to compare the measured RSRP with the RSRP threshold 2. By setting the priority, the UE can select a high-priority uplink carrier as much as possible to improve the communication quality of the UE, and also can save the comparison process of the UE and reduce the power consumption of the UE. In this case, the RSRP measured by the UE may not satisfy the selection rules of all SUL carriers, and the UE may determine the NUL carrier as the first uplink carrier. For example, if the UE determines that none of SUL0, SUL1 and SUL2 is selected after comparing RSRP threshold 0, RSRP threshold 1 and RSRP threshold 2, the UE can select the NUL carrier as the first uplink carrier.

In the above example, although the UE may be able to determine the first uplink carrier after comparing the measured RSRP with a partial RSRP threshold, if the first uplink carrier is a NUL carrier, the UE still needs to compare the measured RSRP with the full RSRP After the thresholds are compared, if none of the selection rules are met, it can be determined that the NUL carrier is the first uplink carrier. In addition, the embodiment of the present application provides another way. In this way, if the UE determines the first uplink carrier in consideration of the priority of the SUL carrier, the UE may also measure the RSRP It can be determined that the NUL carrier is the first uplink carrier after comparing with a part of the RSRP thresholds in the at least one RSRP threshold, without comparing all the RSRP thresholds.

For example, the UE records all SUL carriers whose corresponding indication information indicates the first state as a class A SUL carrier, and records the SUL carrier with the smallest corresponding RSRP threshold among the class A SUL carriers as a SUL_A carrier. In addition, the SUL carriers whose corresponding indication information indicates the second state are all marked as B-type carriers, and the SUL carrier with the largest corresponding RSRP threshold among the B-type SUL carriers is marked as SUL_B carrier. The UE sequentially compares the measured RSRP with at least one RSRP threshold in order of priority from high to low. After comparing the measured RSRP with the RSRP threshold corresponding to the SUL_A carrier, and comparing the measured RSRP with the RSRP threshold corresponding to the SUL_B carrier, if the measured RSRP does not meet the RSRP threshold corresponding to the SUL_A carrier, the measured RSRP and the corresponding The relationship between the states, and the measured RSRP does not meet the RSRP threshold corresponding to the SUL_B carrier, the relationship between the measured RSRP and the corresponding state, then the UE can determine that the NUL carrier is the first uplink carrier. RSRP threshold, no need to compare. For an example of this, please refer to the foregoing. The difference from the foregoing is that in the foregoing example, the UEs are compared in any order, but here the UEs are compared in descending order of priority.

In addition, consider another situation, when the network device configures the RSRP threshold, a configuration error may occur. For example, generally speaking, the RSRP threshold configured for a SUL carrier with a higher frequency is larger, but if the network equipment makes an error, it may occur that the RSRP threshold configured for a SUL carrier with a lower frequency is greater than that configured for a SUL carrier with a higher frequency. The case of the RSRP threshold. In this case, if the UE selects the uplink carrier according to the normal selection process as described above, an error may occur, for example, the uplink carrier may not be selected. To this end, the embodiments of the present application provide a fault tolerance mechanism, so that the UE can select an uplink carrier even when the network device is configured incorrectly.

If this fault tolerance mechanism is adopted, no matter how many RSRP thresholds are configured by the network device, the UE only compares the measured RSRP with one of the RSRP thresholds, and determines the first uplink carrier according to the comparison result. For example, if the network device is configured with at least one RSRP threshold, the UE selects one RSRP threshold from it, and compares the measured RSRP with the RSRP threshold. Wherein, if at least one SUL carrier corresponds to priority information, when selecting an RSRP threshold from at least one RSRP threshold, the UE can select the RSRP threshold corresponding to the SUL carrier with the highest priority, and if at least one SUL carrier does not correspond priority information, the UE can randomly select an RSRP threshold. If the indication information included in the configuration information where the RSRP threshold selected by the UE is located indicates the first state, then, if the measured RSRP is greater than the RSRP threshold, the UE determines that the SUL carrier corresponding to the RSRP threshold is the first uplink carrier; otherwise, the UE determines that the SUL carrier corresponding to the RSRP threshold is the first uplink carrier. It is determined that the second uplink carrier is the first uplink carrier, and the second uplink carrier is one SUL carrier among other SUL carriers except the SUL carrier. Or, if the indication information included in the configuration information where the RSRP threshold is located indicates the second state, then, if the measured RSRP is less than the RSRP threshold, the UE determines that the SUL carrier corresponding to the RSRP threshold is the first uplink carrier, otherwise, the UE determines The second uplink carrier is the first uplink carrier. Wherein, if at least one SUL carrier does not correspond to priority information, the second uplink carrier may be any SUL carrier other than the first uplink carrier in the at least one SUL carrier; or, if at least one SUL carrier corresponds to priority information, Then the second uplink carrier may be the SUL carrier with the highest priority other than the first uplink carrier in the at least one SUL carrier.

For example, the at least one SUL carrier includes SUL0 and SUL1, for example, SUL0 is also referred to as the first SUL carrier, and SUL1 is referred to as the second uplink carrier. The network device configures RSRP threshold 0 for SUL0 and RSRP threshold 1 for SUL1. For example, RSRP threshold 0 is also referred to as the first RSRP threshold, and RSRP threshold 1 is referred to as the second RSRP threshold. The frequency of SUL0 is greater than the frequency of SUL1, and the RSRP threshold 0 should be greater than the RSRP threshold 1, but the RSRP threshold 0 configured by the network device is less than the RSRP threshold 1. When the UE compares, if both SUL0 and SUL1 correspond to priority information, for example, the priority of SUL0 is greater than the priority of SUL1, the UE may select an RSRP threshold of 0 to compare 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 that SUL0 is the first uplink carrier, otherwise, determines that SUL1 is the first uplink carrier; or, if the indication information corresponding to SUL0 The second state is indicated, then, if the measured RSRP is less than the RSRP threshold 0, the UE determines that SUL0 is the first uplink carrier, otherwise, determines that SUL1 is the first uplink carrier. Alternatively, when the UE compares, if neither SUL0 nor SUL1 corresponds to priority information, the UE may select RSRP threshold 0 or RSRP threshold 1 to compare with the measured RSRP, for example, the UE selects RSRP threshold 1. Then, 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 that SUL1 is the first uplink carrier, otherwise, determines that SUL0 is the first uplink carrier; The indication information indicates the second state, then, if the measured RSRP is less than the RSRP threshold 1, the UE determines that SUL1 is the first uplink carrier, otherwise, determines that SUL0 is the first uplink carrier.

Through this fault tolerance mechanism, even if the RSRP threshold configured by the network device is wrong, the UE can still select the first uplink carrier, so that the subsequent uplink signal transmission can be completed.

S33. The UE sends an uplink signal on the first uplink carrier, and the network device receives the uplink signal from the UE on the first uplink carrier.

After determining the first uplink carrier, the UE may send the uplink signal through the first uplink carrier. Since the network device cannot determine which uplink carrier the UE has selected, the network device may perform blind detection on at least one SUL carrier and NUL carrier to receive the uplink signal. For example, if the network device can successfully detect on one uplink carrier, the network device receives the uplink signal on the one uplink carrier, and at this time, the one uplink carrier is the first uplink carrier. The uplink signal is, for example, a preamble in the random access process, or other uplink signals, such as other uplink signals in the random access process, or other uplink signals after successful random access.

In this embodiment of the present application, the network device may indicate the state through indication information, and the state may 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 does not select the first SUL carrier. That is to say, the embodiment of the present application provides a method for determining the uplink carrier. Regardless of whether the frequency of the SUL carrier is less than the frequency of the NUL carrier or greater than the frequency of the NUL carrier, according to the method provided by the embodiment of the present application, the UE can determine the uplink carrier, Thus, the success rate of the UE in determining the uplink carrier is improved, so that the UE can normally send the uplink signal on the determined uplink carrier.

Next, an embodiment of the present application provides a second method for sending and receiving signals. Please refer to FIG. 7 , which is a flowchart of the method. In the following introduction process, the method is applied to the network architecture shown in FIG. 2 as an example.

S71. The network device sends configuration information of at least one SUL carrier, and accordingly, the UE receives configuration information of at least one SUL carrier from the network device. Wherein, the network device can send the configuration information of at least one SUL carrier by unicast, then the UE can receive the configuration information of at least one SUL carrier; or, the network device may also send the configuration information of at least one SUL carrier by broadcast, then There may be multiple UEs that can receive the configuration information of at least one SUL carrier, and the UE described in S71 is one of the UEs.

The network device may send configuration information of at least one SUL carrier, where one SUL carrier corresponds to one configuration information, or in other words, one configuration information may be used to configure one SUL carrier, that is, the configuration information and the SUL carrier are in a one-to-one correspondence. For example, the at least one SUL carrier includes a first SUL carrier, and the first SUL carrier is, for example, any one SUL carrier in the at least one SUL carrier. The configuration information of the first SUL carrier may include a first RSRP threshold, and the first RSRP threshold is an RSRP threshold corresponding to the first SUL carrier. In the configuration information of at least one SUL carrier, different configuration information may include the RSRP threshold, that is, the parameters included in the configuration information of at least one SUL carrier (the parameters here include the RSRP threshold) may be the same, but the values of the parameters (for example, The value of the RSRP threshold) may be different. For example, at least one SUL carrier further includes a second SUL carrier, and the configuration information of the second SUL carrier may also include an RSRP threshold. In order to distinguish, the RSRP threshold included in the configuration information of the first SUL carrier is called RSRP threshold 1, and the first The RSRP threshold included in the configuration information of the two SUL carriers is called RSRP threshold 2, so RSRP threshold 1 and RSRP threshold 2 may be different.

For one SUL carrier, the network device will send the supplementary uplink parameters corresponding to the SUL carrier. For example, the configuration information described in the embodiments of this application is included in the supplementary uplink parameters corresponding to the SUL carrier, and one SUL carrier corresponds to one supplementary uplink parameter , so that 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. Regarding the manner in which the network device includes the configuration information in the supplementary uplink parameters, please refer to the description of S31 in the embodiment shown in FIG. 3 , but in the embodiment of the present application, the configuration information does not include the implementation shown in FIG. 3 the instructions described in the example.

As an optional implementation manner, the network device may also send priority information of at least one SUL carrier. For example, the priority information of one SUL carrier may also be included in the configuration information of the SUL carrier, that is, the configuration information of at least one SUL carrier sent by the network device includes the priority information of at least one SUL carrier, of which one The configuration information includes priority information, and the priority information included in the configuration information is used to indicate the priority of the SUL carrier corresponding to the configuration information. For example, the at least one SUL carrier includes the first SUL carrier, and the configuration information of the first SUL carrier may include priority information of the first SUL carrier. For content such as the manner in which the network device includes the priority information in the configuration information, please refer to the description of S31 in the embodiment shown in FIG. 3 , but in this embodiment of the present application, the configuration information does not include the implementation shown in FIG. 3 the instructions described in the example.

S72. The UE determines the frequency of at least one SUL carrier, and determines the frequency of the NUL carrier.

For example, the network device configures the frequency of at least one SUL carrier and the frequency of the NUL carrier through signaling, and the UE can determine the frequency of at least one SUL carrier and the frequency of the NUL carrier according to the signaling from the network device. For example, the network device may also include the frequency information of the SUL carrier in the configuration information, then at least one configuration information sent by the network device in S71 includes the frequency information of at least one SUL carrier, wherein the configuration information and the frequency information are in a one-to-one correspondence Relationship.

Alternatively, the network device may not include the frequency information of the SUL carrier in the configuration information, but send the frequency information of the SUL carrier through other information. Then the network device can send frequency information of at least one SUL carrier, and the frequency information of at least one SUL carrier can be sent in a message, such as a system message, or other messages. If the message is a system message, the message The system message and the system message where the at least one configuration information is located may be the same system message, or may be different system messages. If the network device sends the at least one configuration information and the frequency information of the at least one SUL carrier through different messages, the step of sending the frequency information of the at least one SUL carrier by the network device may occur before S71, or may also occur after S71, or also Can occur simultaneously with S71.

For the NUL carrier, the network device may also send configuration information. To distinguish, the configuration information sent by the network device to the NUL carrier may be referred to as first information, and the first information may include the frequency of the NUL carrier. For example, the configuration information of at least one SUL carrier and the first information may be included in the same message, or may also be included in different messages.

S73: The UE determines the uplink carrier according to the frequency of the at least one SUL carrier, the frequency of the NUL carrier, the measured RSRP, and the at least one RSRP threshold. For example, the uplink carrier determined by the UE is referred to as the first uplink carrier, and the first uplink carrier is, for example, one of at least one SUL carrier, or a NUL carrier.

The network device also sends a reference signal, which the UE can then receive from the network device. The reference signal is, for example, SSB or CSI-RS. After receiving the reference signal, the UE may measure the reference signal to obtain the RSRP. Then, if at least one SUL carrier does not correspond to a priority, for example, the network device does not send at least one priority information, or the priority of at least one SUL carrier is not defaulted, and the protocol does not specify the priority of at least one SUL carrier, the UE can according to The frequency of the at least one SUL carrier, the frequency of the NUL carrier, the measured RSRP, and at least one RSRP threshold determine the first uplink carrier. Alternatively, if at least one SUL carrier corresponds to a priority, for example, the UE receives at least one priority information, or determines the priority of at least one SUL carrier by a default method or a method specified in a protocol, etc., the UE can determine the priority of at least one SUL carrier according to the at least one SUL carrier The frequency of the NUL carrier, the measured RSRP, the priority of at least one SUL carrier, and the at least one RSRP threshold, determine the first uplink carrier.

In this embodiment of the present application, a selection rule may be preconfigured for the UE, or the selection rule may also be a default, or the selection rule may also be specified through a protocol. For example, the embodiment of the present application includes two selection rules, and the two selection rules are:

Rule 1. 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.

Rule 2: 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.

For the UE, to determine whether a SUL carrier can be used as the first uplink carrier, the frequency of the SUL carrier and the frequency of the NUL carrier can be determined. If the frequency of the SUL carrier is greater than the frequency of the NUL carrier, then rule 1 applies. In step 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, the SUL carrier is not selected. Or, if the frequency of the SUL carrier is less than the frequency of the NUL carrier, then 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, the SUL carrier is not selected carrier. It can be seen that, in this embodiment of the present application, the selection rules are known to the UE, and the UE can determine the selection rules applicable to a SUL carrier according to the frequency of the SUL carrier and the frequency of the NUL carrier without the need for the network device to indicate the corresponding selection rules. The signaling overhead caused by the network device due to the indication selection rule is reduced.

For example, the UE may compare the measured RSRPs with all RSRP thresholds in at least one RSRP threshold in any order, and after all the comparisons are completed, determine the first uplink carrier according to all the 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, SUL2 corresponds to RSRP threshold 2, the frequency of SUL0 is greater than that of the NUL carrier, the frequency of SUL1 is less than the frequency of the NUL carrier, and the frequency of SUL2 The frequency is less than the frequency of the NUL carrier. Because this is the case where there is no priority, the chances of each uplink carrier being selected should be equal, so the UE can compare the measured RSRP with the three RSRP thresholds respectively. limit. For example, the UE 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 may select SUL0, otherwise, the UE does not select SUL0. 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. The UE compares the measured RSRP with the RSRP threshold 2 to determine whether the measured RSRP is less than the RSRP threshold 2. If the measured RSRP is less than the RSRP threshold 2, the UE can select SUL2, otherwise, the UE does not select SUL1. An example of this may continue to refer to FIG. 6 .

The RSRP measured by the UE may only satisfy the selection rule of one of the SUL carriers, then the UE may determine that the SUL carrier is the first uplink carrier. Alternatively, the RSRP measured by the UE may also satisfy the selection rules of multiple SUL carriers, so how the UE determines the first uplink carrier can refer to the introduction to S32 in the embodiment shown in FIG. 3 .

Alternatively, the RSRP measured by the UE may not satisfy the selection rules of all SUL carriers, and the UE may determine the NUL carrier as the first uplink carrier. The selection rule of a SUL carrier can also be regarded 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 none of SUL0, SUL1 and SUL2 is selected after comparing RSRP threshold 0, RSRP threshold 1 and RSRP threshold 2, the UE can select the NUL carrier as the first uplink carrier.

In the above example, the UE determines the first uplink carrier after comparing the measured RSRP with all of the at least one RSRP threshold, or it is also possible that the UE only needs to compare the measured RSRP with the at least one RSRP threshold The first uplink carrier can be determined by comparing some of the thresholds in the .

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 RSRP threshold 0>RSRP threshold 2>RSRP threshold 1. The frequency of SUL0 is higher than the frequency of the NUL carrier, the frequency of SUL1 is lower than the frequency of the NUL carrier, and the frequency of SUL2 is higher than the frequency of the NUL carrier. Because this is the case where there is no priority, the chances of each uplink carrier being selected should be equal, so when comparing, 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 is that the measured RSRP is less than the RSRP threshold 0. Next, 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 is that the measured RSRP is less than the RSRP threshold 1, and the selection rule corresponding to SUL2 is to select SUL2 if the measured RSRP is greater than the RSRP threshold 2, then, since the RSRP threshold 1 < RSRP threshold 2, since the measured RSRP is already less than the RSRP threshold 1, it is impossible to be greater than the RSRP threshold 2, so the UE does not need to compare the measured RSRP with the RSRP threshold 2, but can determine SUL1 as the first uplink carrier.

For example, the UE records all SUL carriers whose frequency is higher than that of the NUL carrier as a class A SUL carrier, and records the SUL carrier with the smallest corresponding RSRP threshold among the class A SUL carriers as a SUL_A carrier. In addition, the SUL carriers whose frequency is lower than the frequency of the NUL carrier are all recorded as B-type carriers, and the SUL carrier with the largest corresponding RPRP threshold among the B-type SUL carriers is recorded as SUL_B carrier. The UE sequentially 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 comparing the measured RSRP with the RSRP threshold corresponding to the SUL_B carrier, if the measurement The RSRP does not meet the RSRP threshold corresponding to the SUL_A carrier, the relationship between the measured RSRP, the frequency of the SUL_A carrier, and the frequency of the NUL carrier, and the measured RSRP does not meet the RSRP threshold corresponding to the SUL_B carrier, the measured RSRP, the SUL_B carrier and the relationship between the frequency of the NUL carrier and the frequency of the NUL carrier, the UE can determine that the NUL carrier is the first uplink carrier, and if there is an uncompared RSRP threshold, no further comparison is required. For an example of this, refer to the embodiment shown in FIG. 3 . The difference is that the network device in the embodiment of the present application does not indicate a state, and the UE can determine the judgment method according to the frequency of the SUL carrier and the frequency of the NUL 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, where the priority of SUL0>the priority of SUL1>the priority of SUL2. The frequency of SUL0 is higher than the frequency of the NUL carrier, the frequency of SUL1 is lower than that of the NUL carrier, and the frequency of SUL2 is lower than the frequency of the NUL carrier. Because this is the case of the existence of priorities, when comparing, the UE may compare the measured RSRP with the RSRP threshold in order from high to low priority. For example, because SUL0 has the highest priority, 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 is that the measured RSRP is less than the RSRP threshold 0. Next, 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 is that the measured RSRP is less than the RSRP threshold 1, then the UE can determine that SUL1 is the first uplink carrier, and there is no need to compare the measured RSRP with the RSRP threshold 2. By setting the priority, the UE can select a high-priority uplink carrier as much as possible to improve the communication quality of the UE, and also can save the comparison process of the UE and reduce the power consumption of the UE.

In this case, the RSRP measured by the UE may not satisfy the selection rules of all SUL carriers, and the UE may determine the NUL carrier as the first uplink carrier. For example, if the UE determines that none of SUL0, SUL1 and SUL2 is selected after comparing RSRP threshold 1, RSRP threshold 2 and RSRP threshold 3, the UE can select the NUL carrier as the first uplink carrier.

In addition, the embodiment of the present application may also provide a fault tolerance mechanism for the case where the network device configures the RSRP threshold incorrectly. For the content of this part, reference may be made to the related introduction of the embodiment shown in FIG. 3 .

For example, the UE records all SUL carriers whose frequency is higher than that of the NUL carrier as a class A SUL carrier, and records the SUL carrier with the smallest corresponding RSRP threshold among the class A SUL carriers as a SUL_A carrier. In addition, the SUL carriers whose frequency is lower than the frequency of the NUL carrier are all recorded as B-type carriers, and the SUL carrier with the largest corresponding RPRP threshold among the B-type SUL carriers is recorded as SUL_B carrier. The UE sequentially compares the measured RSRP with at least one RSRP threshold in order of priority from high to low. After comparing the measured RSRP with the RSRP threshold corresponding to the SUL_A carrier, and comparing the measured RSRP with the RSRP threshold corresponding to the SUL_B carrier, if the measured RSRP does not meet the RSRP threshold corresponding to the SUL_A carrier, the measured RSRP, the SUL_A carrier The relationship between the frequency of the SUL_B carrier and the frequency of the NUL carrier, and the measured RSRP does not meet the RSRP threshold corresponding to the SUL_B carrier, the measured RSRP, the frequency of the SUL_B carrier, and the relationship between the frequency of the NUL carrier, then the UE can determine The NUL carrier is the first uplink carrier, and if there is an uncompared RSRP threshold, no further comparison is required. For an example of this, refer to the embodiment shown in FIG. 3 . The difference is that the network device in the embodiment of the present application does not indicate a state, and the UE can determine the judgment method according to the frequency of the SUL carrier and the frequency of the NUL carrier.

S74: The UE sends an uplink signal on the first uplink carrier, and the network device receives the uplink signal from the UE on the first uplink carrier.

For more content of S74, reference may be made to the introduction to S33 in the embodiment shown in FIG. 3 .

In the embodiment of the present application, the network device does not need to indicate the selection rule, and the UE can determine the selection rule according to the frequency of the SUL carrier and the frequency of the NUL carrier, so as to select the uplink carrier. That is to say, the embodiment of the present application provides a method for determining the uplink carrier. Regardless of whether the frequency of the SUL carrier is less than the frequency of the NUL carrier or greater than the frequency of the NUL carrier, according to the method provided by the embodiment of the present application, the UE can determine the uplink carrier, Thus, the success rate of the UE in determining the uplink carrier is improved, so that the UE can normally send the uplink signal on the determined uplink carrier. Moreover, since the network device does not need to indicate the selection rule, signaling overhead can also be saved.

FIG. 8 is a schematic structural diagram of a communication apparatus provided by an embodiment of the present application. The communication apparatus 800 may be the terminal device shown in FIG. 2 , and is configured to implement the method for the terminal device in the foregoing method embodiments. The communication apparatus may also be the network device in FIG. 2 , for implementing the method corresponding to the network device in the foregoing method embodiments. For specific functions, refer to the descriptions in the foregoing method embodiments.

Communication device 800 includes one or more processors 801 . The processor 801 may also be referred to as a processing unit, and may implement certain control functions. The processor 801 may be a general-purpose processor or a special-purpose processor or the like. For example, including: baseband processors, central processing units, application processors, modem processors, graphics processors, image signal processors, digital signal processors, video codec processors, controllers, memories, and/or Neural network processors, etc. The baseband processor may be used to process communication protocols and communication data. The central processing unit may be used to control the communication device 800, execute software programs and/or process data. The different processors can be stand-alone devices, or they can be integrated in one or more processors, for example, on one or more application specific integrated circuits.

Optionally, the communication apparatus 800 includes one or more memories 802 for storing instructions 804, and the instructions can be executed on the processor, so that the terminal device 800 executes the methods described in the above method embodiments. Optionally, the memory 802 may also store data. The processor and the memory can be provided separately or integrated together.

Optionally, one or more processors 801 may include instructions 803 (sometimes also referred to as codes or programs), and the instructions 803 may be executed on the processors 801 to cause the communication apparatus 800 to perform the above implementation method described in the example. Data may be stored in the processor 801 .

Optionally, the communication apparatus 800 may further include a transceiver 805 and an antenna 806 . The transceiver 805 may be referred to as a transceiver unit, a transceiver, a transceiver circuit, a transceiver, an input/output interface, etc., and is used to implement the transceiver function of the communication device 800 through the antenna 806 .

Optionally, the communication device 800 may further include one or more of the following components: a wireless communication module, an audio module, an external memory interface, an internal memory, a universal serial bus (universal serial bus, USB) interface, a power management module, an antenna, Speakers, microphones, I/O modules, sensor modules, motors, cameras, or displays, etc. It can be understood that, in some embodiments, the UE 800 may include more or less components, or some components may be integrated, or some components may be split. These components may be implemented in hardware, software, or a combination of software and hardware.

The processor 801 and the transceiver 805 described in the embodiments of the present application may be implemented in an integrated circuit (IC), an analog IC, a radio frequency identification (RFID), a mixed-signal IC, and an application specific integrated circuit (application specific integrated circuit). integrated circuit, ASIC), printed circuit board (printed circuit board, PCB), or electronic equipment, etc. To implement the communication apparatus described herein, it may be an independent device (eg, an independent integrated circuit, a mobile phone, etc.), or may be a part of a larger device (eg, a module that can be embedded in other devices). The description of the terminal device and the network device will not be repeated here.

The embodiments of the present application provide a terminal device (for convenience of description, referred to as UE), which can be used in the foregoing embodiments. The terminal device includes corresponding means, units and/or circuits for implementing the UE functions described in the embodiments shown in FIG. 2 , FIG. 3 , FIG. 6 , and/or FIG. 7 . For example, a terminal device includes a transceiver module, which is used to support the terminal device to implement a transceiver function, and a processing module, which is used to support the terminal device to process signals.

FIG. 9 is a schematic structural diagram of a terminal device provided by an embodiment of the present application.

The terminal device 900 can be applied to the architecture shown in FIG. 2 . For convenience of explanation, FIG. 9 only shows the main components of the terminal device 900 . As shown in FIG. 9 , the terminal device 900 includes a processor, a memory, a control circuit, an antenna, and an input and output device. The processor is mainly used to process communication protocols and communication data, and to control the entire terminal device 900, execute software programs, and process data of the software programs. The memory is mainly used to store software programs and data. The control circuit is mainly used for the conversion of the baseband signal and the radio frequency signal and the processing of the radio frequency signal. Antennas are mainly used to send and receive radio frequency signals in the form of electromagnetic waves. Input and output devices, such as touch screens, display screens, microphones, keyboards, etc., are mainly used to receive data input by users and output data to users.

Taking the terminal device 900 as a mobile phone as an example, when the 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 the data needs to be sent wirelessly, the processor performs baseband processing on the data to be sent, and outputs the baseband signal to the control circuit. The control circuit performs radio frequency processing on the baseband signal and sends the radio frequency signal through the antenna in the form of electromagnetic waves. When data is sent to the 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, which converts the baseband signal into data and processes the data .

Those skilled in the art can understand that, for the convenience of description, FIG. 9 only shows one memory and a processor. In some embodiments, terminal device 900 may include multiple processors and memories. The memory may also be referred to as a storage medium or a storage device, etc., which is not limited in this embodiment of the present invention.

As an optional implementation manner, 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, and the central processing unit is mainly used to control the entire terminal device 900. The software program is executed, and the data of the software program is processed. The processor in FIG. 9 integrates the functions of the baseband processor and the central processing unit. Those skilled in the art can understand that the baseband processor and the central processing unit may also be independent processors, interconnected by technologies such as a bus. The terminal device 900 may include multiple baseband processors to adapt to different network standards, the terminal device 900 may include multiple central processors to enhance its processing capability, and various components of the terminal device 900 may be connected through various buses. The baseband processor may also be expressed as a baseband processing circuit or a baseband processing chip. The central processing unit can also be expressed as a central processing circuit or a central processing chip. The function of processing the communication protocol and communication data may be built in the processor, or may be stored in the storage unit in the form of a software program, and the processor executes the software program to realize the baseband processing function.

In one example, the antenna and control circuit with a transceiving function can be regarded as the transceiving unit 910 of the terminal device 900 , and the processor having a processing function can be regarded as the processing unit 920 of the terminal device 900 . As shown in FIG. 9 , the terminal device 900 includes a transceiver unit 910 and a processing unit 920 . The transceiving unit may also be referred to as a transceiver, a transceiver, a transceiving device, or the like. Optionally, the device for implementing the receiving function in the transceiver unit 910 may be regarded as a receiving unit, and the device for implementing the sending function in the transceiver unit 910 may be regarded as a transmitting unit, that is, the transceiver unit 910 includes a receiving unit and a transmitting unit. Exemplarily, the receiving unit may also be referred to as a receiver, a receiver, a receiving circuit, and the like, and the transmitting unit may be referred to as a transmitter, a transmitter, or a transmitting circuit, or the like.

The embodiment of the present application also provides a network device, and the network device can be used in each of the foregoing embodiments. The network device includes means, units and/or circuits for implementing the functions of the network device described in the embodiments shown in FIG. 2 , FIG. 3 , FIG. 6 , and/or FIG. 7 . For example, the network device includes a transceiver module to support the terminal device to implement a transceiver function, and a processing module to support the network device to process signals.

FIG. 10 is a schematic structural diagram of a network device provided by an embodiment of the present application. As shown in FIG. 10 , the network device 20 can be applied to the architecture shown in FIG. 2 . The network equipment includes: a baseband device 201 , a radio frequency device 202 , and an antenna 203 . In the uplink direction, the radio frequency apparatus 202 receives the information sent by the terminal equipment through the antenna 203, and sends the information sent by the terminal equipment to the baseband apparatus 201 for processing. In the downlink direction, the baseband apparatus 201 processes the information of the terminal equipment and sends it to the radio frequency apparatus 202 , and the radio frequency apparatus 202 processes the information of the terminal equipment and sends it to the terminal equipment through the antenna 201 .

The baseband device 201 includes one or more processing units 2011 , storage units 2012 and interfaces 2013 . The processing unit 2011 is configured to support the network device to perform the functions of the network device in the foregoing method embodiments. The storage unit 2012 is used to store software programs and/or data. The interface 2013 is used for exchanging information with the radio frequency device 202, and the interface includes an interface circuit for inputting and outputting information. 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 types of integrated circuits. These integrated circuits can be integrated together to form chips. The storage unit 2012 and the processing unit 2011 may be located in the same chip, that is, an on-chip storage element. Alternatively, the storage unit 2012 and the processing unit 2011 may also be located on different chips from the processing element 2011, that is, an off-chip storage element. The storage unit 2012 may be a memory, or may be a collective term for multiple memories or storage elements.

The network device may implement some or all of the steps in the foregoing method embodiments in the form of one or more processing unit schedulers. For example, the corresponding functions of the network device in FIG. 3 and/or FIG. 7 are implemented. The one or more processing units may support wireless access technologies of the same standard, or may support wireless access standards of different standards.

Those of ordinary skill in the art can realize that the units and steps of each example 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 performed in hardware or software depends on the specific application and design constraints of the technical solution. Skilled artisans may implement the described functionality using different methods for each particular application, but such implementations should not be considered beyond the scope of this application.

In the several embodiments provided in this application, it should be understood that the disclosed system, apparatus and method may be implemented in other manners. For example, the apparatus embodiments described above are only illustrative. For example, the division of the units is only a logical function division. The units described as separate components may or may not be physically separated. The components shown may or may not be physical units, ie may be located in one place, or may be distributed over multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution in this embodiment.

The functions, if implemented in the form of software functional units and sold or used as independent products, may be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application can be embodied in the form of a software product in essence, or the part that contributes to the prior art or the part of the technical solution. The computer software product is stored in a storage medium, including Several instructions are used 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 the present application. The aforementioned computer-readable storage medium can be any available medium that can be accessed by a computer. Taking this as an example but not limited to: the computer-readable medium may include random access memory (RAM), read-only memory (ROM), programmable read-only memory (PROM), Erasable programmable read only memory (erasable PROM, EPROM), electrically erasable programmable read only memory (electrically erasable programmable read only memory, EEPROM), compact disc read-only memory (compact disc read-only memory, CD- ROM), universal serial bus flash disk, removable hard disk, or other optical disk storage, magnetic disk storage medium, or other magnetic storage device, or capable of carrying or storing desired data in the form of instructions or data structures program code and any other medium that can be accessed by a computer. Additionally, by way of example and not limitation, many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous link dynamic random access memory (synchlink DRAM) , SLDRAM) or direct memory bus random access memory (direct rambus RAM, DR RAM).

The above are only specific implementations of the present application, but the protection scope of the embodiments of the present application is not limited thereto. Any person skilled in the art who is familiar with the technical field can easily think of changes within the technical scope disclosed in the embodiments of the present application. Or alternatives, all should be covered within the protection scope of the embodiments of the present application. Therefore, the protection scope of the embodiments of the present application should be based on the protection scope of the claims.

Claims

A method for sending a signal, comprising:

Receive configuration information of at least one supplementary uplink SUL carrier from a network device, 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 A SUL carrier is any one of the at least one SUL carrier;

Determine an uplink carrier according to at least one indication information, measured RSRP and at least one RSRP threshold, where the uplink carrier is one of the at least one SUL carrier, or is a common uplink NUL carrier, wherein the first SUL carrier When the corresponding indication information indicates the first state, and the measured RSRP is greater than the first RSRP threshold, the uplink carrier is the first SUL carrier;

Send an uplink signal to the network device on the uplink carrier.
The method according to claim 1, wherein, when 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 uplink carrier is the first SUL carrier.
The method according to claim 1 or 2, wherein the configuration information of the first SUL carrier further includes priority information of the first SUL carrier.
The method according to claim 3, wherein the determining the uplink carrier according to at least one indication information, measured RSRP and at least one RSRP threshold comprises:

comparing the measured RSRP with the first RSRP threshold according to the priority of the at least one SUL carrier from high to low;

In the case that the indication information corresponding to the first SUL carrier indicates the first state, if the measured RSRP is greater than the first RSRP threshold, determine that the first SUL carrier is the uplink carrier; or, In the case that the indication information corresponding to the first SUL carrier indicates the second state, if the measured RSRP is less than the first RSRP threshold, it is determined that the first SUL carrier is the uplink carrier.
The method according to claim 4, wherein the method further comprises:

In the case that 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, comparing the measured RSRP with a second RSRP threshold; Or, if 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, compare the measured RSRP with the second RSRP threshold; The second RSRP threshold is a threshold corresponding to the second SUL carrier in the at least one SUL carrier, and the priority of the first SUL carrier is higher than the priority of the second SUL carrier;

In the case that the indication information corresponding to the second SUL carrier indicates the first state, if the measured RSRP is greater than the second RSRP threshold, determine that the second SUL carrier is the uplink carrier, or, When the indication information corresponding to the second SUL carrier indicates the second state, the measured RSRP is less than the second RSRP threshold, and it is determined that the second SUL carrier is the uplink carrier.
The method according to any one of claims 1 to 5, wherein, in the case that the measured RSRP does not satisfy some or all of the at least one relationship, the uplink carrier is the NUL carrier, wherein , one of the at least one relationship is a relationship between the state indicated by the indication information corresponding to one SUL carrier, the RSRP threshold corresponding to the one SUL carrier, and the measured RSRP.
A signal receiving method, comprising:

Sending configuration information of at least one supplementary uplink SUL carrier to the terminal device, where the configuration information of the at least one SUL carrier is used to determine the uplink 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;

Receive an uplink signal from the terminal device on the uplink carrier, wherein, in the case that 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, the uplink carrier is the first SUL carrier.
The method according to claim 7, wherein when the indication information corresponding to the first SUL carrier indicates the 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.
The method according to claim 7 or 8, wherein the configuration information of the first SUL carrier further includes priority information of the first SUL carrier.
The method according to any one of claims 7 to 9, wherein, in the case that the measured RSRP does not satisfy some or all of the at least one relationship, the uplink carrier is a NUL carrier, wherein the One of the at least one relationship is a relationship between the state indicated by the indication information corresponding to one SUL carrier, the RSRP threshold corresponding to the one SUL carrier, and the measured RSRP.
A method for sending a signal, comprising:

determining the frequency of at least one supplementary uplink SUL carrier, and determining the frequency of the normal uplink NUL carrier;

Determine an uplink carrier according to 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, where the uplink carrier is one of the at least one SUL carrier , or the NUL carrier, the at least one RSRP threshold is received by the terminal device from the network device, and the at least one RSRP threshold corresponds to the at least one SUL carrier;

Send an uplink signal to the network device on the uplink carrier.
The method according to claim 11, wherein the determining the uplink carrier according to the frequency of the at least one SUL carrier, the frequency of the NUL carrier, the measured RSRP and the RSRP threshold value comprises:

In the case where 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, the determined uplink carrier is the first SUL carrier.
The method according to claim 11 or 12, wherein the determining the uplink carrier according to the frequency of the at least one SUL carrier, the frequency of the NUL carrier, the measured RSRP, and the RSRP threshold comprises:

In the case where 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, the determined uplink carrier is the first SUL carrier.
The method according to any one of claims 11 to 13, wherein the method further comprises:

First information is received from the network device, the first information is used to indicate the priority of the at least one SUL carrier.
The method according to claim 14, wherein the determining the uplink carrier according to the frequency of the at least one SUL carrier, the frequency of the NUL carrier, the measured RSRP and at least one RSRP threshold comprises:

comparing the measured RSRP with the first RSRP threshold according to the priority of the at least one SUL carrier from high to low;

In the case that the frequency of the first 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, determine that the first SUL carrier is the uplink carrier Or, in the case that the frequency of the first 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, determine that the first SUL carrier is the the upstream carrier.
The method of claim 15, wherein the method further comprises:

In the case where the frequency of the first SUL carrier is greater than the frequency of the NUL carrier, if the measured RSRP is less than or equal to the RSRP threshold corresponding to the first SUL carrier, compare the measured RSRP with the second RSRP threshold comparison; or, in the case that the frequency of the first SUL carrier is less than the frequency of the NUL carrier, if the measured RSRP is greater than or equal to the RSRP threshold corresponding to the first SUL carrier, the measured RSRP RSRP is compared with a second RSRP threshold; wherein, the second RSRP threshold is a threshold corresponding to a second SUL carrier in the at least one SUL carrier, and the priority of the first SUL carrier is higher than that of the second SUL carrier the priority;

In the case that the frequency of the second SUL carrier is greater than the frequency of the NUL carrier, if the measured RSRP is greater than the RSRP threshold corresponding to the second SUL carrier, determine that the second SUL carrier is the uplink carrier , or, when the frequency of the second SUL carrier is less than the frequency of the NUL carrier, the measured RSRP is less than the RSRP threshold corresponding to the second SUL carrier, and the second SUL carrier is determined to be the Upstream carrier.
The method according to any one of claims 11 to 16, wherein, in the case that the measured RSRP does not satisfy some or all of at least one relationship, the uplink carrier is the NUL carrier, wherein , one of the at least one relationship is the relationship between the frequency of one SUL carrier, the frequency of the NUL carrier, the RSRP threshold corresponding to the one SUL carrier, and the measured RSRP.
A communication device is characterized by comprising a processing unit and a transceiver unit, wherein,

The processing unit is configured to receive configuration information of at least one SUL carrier from a network device through the transceiver unit, 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 SUL carrier. RSRP threshold, the first SUL carrier is any one of the at least one SUL carrier;

The processing unit is further configured to determine an uplink carrier according to at least one indication information, measured RSRP and at least one RSRP threshold, where the uplink carrier is one of the at least one SUL carrier, or is a NUL carrier, where the When 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 uplink carrier is the first SUL carrier;

The processing unit is further configured to send an uplink signal to the network device on the uplink carrier through the transceiver unit.
The communication device according to claim 18, wherein, when 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 uplink The carrier is the first SUL carrier.
The communication apparatus according to claim 18 or 19, wherein the configuration information of the first SUL carrier further includes priority information of the first SUL carrier.
The communication device according to claim 20, wherein the processing unit is configured to determine the uplink carrier according to the at least one indication information, the measured RSRP and the at least one RSRP threshold in the following manner:

comparing the measured RSRP with the first RSRP threshold according to the priority of the at least one SUL carrier from high to low;

In the case that the indication information corresponding to the first SUL carrier indicates the first state, if the measured RSRP is greater than the first RSRP threshold, determine that the first SUL carrier is the uplink carrier; or, In the case that the indication information corresponding to the first SUL carrier indicates the second state, if the measured RSRP is less than the first RSRP threshold, it is determined that the first SUL carrier is the uplink carrier.
The communication device according to claim 21, wherein:

The processing unit is further configured to, 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, send the measured RSRP to the first state. The RSRP is compared with the second RSRP threshold; or, in the case that 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 RSRP is compared with a second RSRP threshold; wherein, the second RSRP threshold is a threshold corresponding to a second SUL carrier in the at least one SUL carrier, and the priority of the first SUL carrier is higher than that of the second SUL carrier the priority;

The processing unit is further configured to determine the second SUL carrier if the measured RSRP is greater than the second RSRP threshold when the indication information corresponding to the second SUL carrier indicates the first state is the uplink carrier, or, when the indication information corresponding to the second SUL carrier indicates the second state, the measured RSRP is less than the second RSRP threshold, and the second SUL carrier is determined to be the Upstream carrier.
The communication device according to any one of claims 18 to 22, wherein, in the case that the measured RSRP does not satisfy part or all of at least one relationship, the uplink carrier is the NUL carrier, Wherein, one of the at least one relationship is a relationship between the state indicated by the indication information corresponding to one SUL carrier, the RSRP threshold corresponding to the one SUL carrier, and the measured RSRP.
A communication device is characterized by comprising a processing unit and a transceiver unit, wherein,

The processing unit is configured to send configuration information of at least one SUL carrier to the terminal device through the transceiver unit, where the configuration information of the at least one SUL carrier is used to determine an uplink carrier, wherein the configuration information of the at least one SUL carrier The configuration information of the first SUL carrier in includes indication information and a first RSRP threshold, and the first SUL carrier is any one of the at least one SUL carrier;

The processing unit is further configured to receive the uplink signal from the terminal device on the uplink carrier through the transceiver unit, wherein, in the case that the indication information corresponding to the first SUL carrier indicates the first state, If the RSRP measured by the terminal device is greater than the first RSRP threshold, the uplink carrier is the first SUL carrier.
The communication device according to claim 24, wherein, in the case that the indication information corresponding to the first SUL carrier indicates the second state, the measured RSRP is less than the RSRP threshold corresponding to the first SUL carrier, Then the uplink carrier is the first SUL carrier.
The communication apparatus according to claim 24 or 25, wherein the configuration information of the first SUL carrier further includes priority information of the first SUL carrier.
The communication device according to any one of claims 24 to 26, wherein, in the case that the measured RSRP does not satisfy some or all of the at least one relationship, the uplink carrier is a NUL carrier, wherein: One of the at least one relationship is a relationship between the state indicated by the indication information corresponding to one SUL carrier, the RSRP threshold corresponding to the one SUL carrier, and the measured RSRP.
A communication device is characterized by comprising a processing unit and a transceiver unit, wherein,

the processing unit, configured to determine the frequency of at least one SUL carrier, and determine the frequency of the NUL carrier;

The processing unit is further configured to determine an uplink carrier according to the frequency of the at least one SUL carrier, the frequency of the NUL carrier, the measured RSRP and at least one RSRP threshold, wherein the uplink carrier is the at least one SUL one of the carriers, or the NUL carrier, the at least one RSRP threshold is received by the communication apparatus from a network device, and the at least one RSRP threshold corresponds to the at least one SUL carrier;

The processing unit is further configured to send an uplink signal to the network device on the uplink carrier through the transceiver unit.
The communication device according to claim 28, wherein the processing unit is configured to determine the uplink carrier according to the frequency of the at least one SUL carrier, the frequency of the NUL carrier, the measured RSRP and the RSRP threshold in the following manner :

In the case where 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, the determined uplink carrier is the first SUL carrier.
The communication device according to claim 28 or 29, wherein the processing unit is configured to determine, according to the frequency of the at least one SUL carrier, the frequency of the NUL carrier, the measured RSRP and the RSRP threshold, in the following manner Upstream carrier:

In the case where 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, the determined uplink carrier is the first SUL carrier.
The communication device according to any one of claims 28 to 30, wherein the processing unit is further configured to receive first information from the network device through the transceiver unit, where the first information is used to indicate The priority of the at least one SUL carrier.
The communication device according to claim 31, wherein the processing unit is configured to determine, according to the frequency of the at least one SUL carrier, the frequency of the NUL carrier, the measured RSRP, and at least one RSRP threshold, in the following manner: Upstream carrier:

comparing the measured RSRP with the first RSRP threshold according to the priority of the at least one SUL carrier from high to low;

In the case that the frequency of the first 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, determine that the first SUL carrier is the uplink carrier Or, in the case that the frequency of the first 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, determine that the first SUL carrier is the the upstream carrier.
The communication device of claim 32, wherein:

The processing unit is further configured to, when the frequency of the first SUL carrier is greater than the frequency of the NUL carrier, if the measured RSRP is less than or equal to the RSRP threshold corresponding to the first SUL carrier, set the The measured RSRP is compared with the second RSRP threshold; or, in the case that the frequency of the first SUL carrier is less than the frequency of the NUL carrier, if the measured RSRP is greater than or equal to the corresponding first SUL carrier RSRP threshold, comparing the measured RSRP with a second RSRP threshold; wherein, the second RSRP threshold is a threshold corresponding to the second SUL carrier in the at least one SUL carrier, the priority of the first SUL carrier higher priority than the second SUL carrier;

The processing unit is further configured to, in the case that the frequency of the second SUL carrier is greater than the frequency of the NUL carrier, if the measured RSRP is greater than the RSRP threshold corresponding to the second SUL carrier, determine the first SUL carrier. The second SUL carrier is the uplink carrier, or, in the case that the frequency of the second SUL carrier is less than the frequency of the NUL carrier, the measured RSRP is less than the RSRP threshold corresponding to the second SUL carrier. The second SUL carrier is the uplink carrier.
The communication device according to any one of claims 28 to 33, wherein, in the case that the measured RSRP does not satisfy part or all of the at least one relationship, the uplink carrier is the NUL carrier, Wherein, one of the at least one relationship is the relationship between the frequency of one SUL carrier, the frequency of the NUL carrier, the RSRP threshold corresponding to the one SUL carrier, and the measured RSRP.
A communication device, characterized in that it comprises a processor and a memory; the memory is used to store one or more computer programs, when the one or more computer programs are executed, the computer program according to any one of claims 1 to 6 is executed. A method according to any one of claims 7-10 is performed, or a method according to any one of claims 11-17 is performed.
A computer-readable storage medium, characterized in that, the computer-readable storage medium is used to store a computer program, and when the computer program runs on a computer, the computer is made to execute any one of claims 1 to 6. The method described in item 1, or the computer is caused to perform the method according to any one of claims 7 to 10, or the computer is caused to perform the method according to any one of claims 11 to 17.