Communication method and apparatus

Abstract

A communication method and apparatus. A terminal determines a first transmission parameter, and the terminal supports the first transmission parameter and a second transmission parameter, wherein the first transmission parameter includes one or more of a first maximum transmission power, a first transmission waveform, a first transmission link, and a first link indicator; the second transmission parameter includes one or more of a second maximum transmission power, a second transmission waveform, a second transmission link, and a second link indicator; and at least one of the first transmission parameters is different from at least one of the second transmission parameters. The terminal sends a first uplink signal on the basis of the first transmission parameter. The terminal supports multiple sets of transmission parameters, so that during signal transmission, corresponding transmission parameters can be selected from among the multiple sets of transmission parameters, and the selected transmission parameters can meet corresponding signal requirements. Moreover, by configuring multiple sets of transmission parameters, the signal transmission process of a terminal apparatus is more flexible.

Description

Communication method and apparatus

[0001] Cross-reference to Related Applications

[0002] This application claims priority to the Chinese Patent Application No. 202410662316.0, filed on May 25, 2024, and entitled "A Communication Method and Apparatus", the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0003] The present application relates to the field of communication technology, and in particular, to a communication method and apparatus. BACKGROUND

[0004] When performing uplink transmission, a fifth generation (5G) user equipment (UE) generally transmits signals through a transmitter in the UE. Different signals may have different requirements for transmission parameters, but the transmitter of the UE processes different signals in the same way, which cannot meet the needs of different signals. SUMMARY

[0005] Embodiments of the present application provide a communication method and apparatus for meeting the needs of different signals through different transmission parameters.

[0006] In a first aspect, a first communication method is provided, which can be applied to a terminal-side apparatus, for example, also referred to as a terminal apparatus. The terminal apparatus is, for example, a terminal device, or other equipment including the function of a terminal device, or a circuit, or a chip system (or, a chip, for example, a modem chip, also referred to as a baseband chip, or a system on chip (SoC) chip or a system in package (SIP) chip containing a modem core, or other functional modules) capable of realizing the function of a terminal device, which is, for example, arranged in a terminal device. The method comprises: determining a first transmission parameter, wherein the terminal supports the first transmission parameter and a second transmission parameter, wherein the first transmission parameter comprises one or more of a first maximum transmission power, a first transmission waveform, a first transmission chain, or a first link indicator, the second transmission parameter comprises one or more of a second maximum transmission power, a second transmission waveform, a second transmission chain, or a second link indicator, and at least one included in the first transmission parameter is different from at least one included in the second transmission parameter; and transmitting a first uplink signal according to the first transmission parameter.

[0007] In the embodiments of the present application, the terminal device can support multiple sets of transmission parameters, for example, a first transmission parameter and a second transmission parameter, so that when transmitting a signal, the corresponding transmission parameter can be selected from the multiple sets of transmission parameters, so that the selected transmission parameter can meet the requirements of the corresponding signal. And because multiple sets of transmission parameters are set, the sending process of the terminal device is more flexible.

[0008] In an optional implementation, the first maximum transmission power is the maximum transmission power corresponding to a first power class, and the maximum transmission power corresponding to the first power class is less than the maximum transmission power corresponding to a second power class, wherein the first power class corresponds to the first transmission parameter, and the second power class corresponds to the second transmission parameter, and the maximum transmission power corresponding to the second power class is 23 dBm, 26 dBm or 29 dBm. The first power class is, for example, a power class defined in the embodiments of the present application. By defining a new power class to achieve the first maximum transmission power, the terminal device can not have to perform an additional calculation process, and the implementation of the terminal device can be simplified.

[0009] In an optional implementation, the first maximum transmission power is 0 dBm, 10 dBm or 15 dBm. Alternatively, the first maximum transmission power can also be other values less than the maximum transmission power corresponding to the second power class, which is not limited.

[0010] In an optional implementation, the first maximum transmission power is determined according to a first value and the maximum transmission power corresponding to the second power class, and the maximum transmission power corresponding to the second power class is 23 dBm, 26 dBm or 29 dBm. In this way, a new power class does not have to be additionally defined, but the first maximum transmission power can be determined according to an existing power class (for example, the first power class), which is beneficial to compatibility with existing technologies.

[0011] In an optional implementation, the first transmission waveform is a single-carrier frequency domain equalization waveform; or, the first transmission waveform is a single-carrier modulation symbol waveform; or, the first transmission waveform is an MSK waveform; or, the first transmission waveform is a GMSK waveform. The first transmission waveform can be a single-carrier waveform, which has a lower PAPR, is beneficial to improving the efficiency of the power amplifier of the terminal device, and is also beneficial to suppressing the nonlinearity of the waveform.

[0012] In an optional implementation, the power consumption of the first transmission chain is lower than the power consumption of the second transmission chain; and / or, the first transmission chain includes fewer types of devices than the second transmission chain. The power consumption of the first transmission chain can be relatively small, which is beneficial to reducing the uplink transmission power consumption.

[0013] In an alternative implementation, the first link metric has a less stringent limit on the transmit link than the second link metric. Alternatively, the first link metric is more relaxed than the second link metric. As the first link metric is more relaxed, it is beneficial to reduce the transmit link power consumption, and thus the uplink transmit power consumption.

[0014] In an alternative implementation, the method further comprises determining first information, the first information being used to indicate a resource corresponding to the first transmit parameter, the resource being used to transmit the first uplink signal; and / or determining second information, the second information being used to indicate a resource corresponding to the second transmit parameter. The first information is configured or scheduled by the network device, or can be pre-configured information, and the terminal device can determine the resource corresponding to the first transmit parameter according to the first information. The second information is configured or scheduled by the network device, or can be pre-configured information, and the terminal device can determine the resource corresponding to the second transmit parameter according to the second information.

[0015] In an alternative implementation, the method further comprises transmitting an uplink reference signal; and receiving third information, the third information being used to indicate the first transmit parameter or the second transmit parameter. For example, the network device can determine the first transmit parameter or the second transmit parameter according to the uplink reference signal from the terminal device, and thus the network device can transmit the third information to the terminal device to indicate the first transmit parameter or the second transmit parameter. By determining the transmit parameter by the network device, the terminal device does not have to perform an excessive determination process, and thus the implementation of the terminal device can be simplified.

[0016] In an alternative implementation, before transmitting the uplink reference signal, the method further comprises receiving fourth information, the fourth information being used to indicate a transmit power of the uplink reference signal; or transmitting the fourth information, the fourth information being used to indicate the transmit power of the uplink reference signal. The transmit power of the uplink reference signal can be determined by the network device or the terminal device, and both the network device and the terminal device can know the transmit power, and thus the terminal device can transmit the uplink reference signal according to the transmit power, and the network device can determine the transmit parameter according to the transmit power and a received power of the uplink reference signal.

[0017] In an alternative implementation, the third information is further used to schedule the first uplink signal. For example, the network device can carry the third information through a channel used to schedule the first uplink signal, and thus the network device does not have to additionally transmit a channel carrying the third information, and it is beneficial to save the signaling overhead.

[0018] In an optional implementation, the method further includes: sending fifth information, the fifth information being used to indicate that the terminal expects to use the first transmission parameter to send an uplink signal, or the fifth information being used to indicate the first parameter. The terminal device can indicate the transmission parameter determined by the terminal device (i.e., the transmission parameter expected or requested by the terminal device) through the fifth information, so that the network device can refer to the opinion from the terminal device when determining the transmission parameter for the terminal device, so that the finally determined transmission parameter meets the requirement of the terminal device.

[0019] In an optional implementation, the first parameter includes path loss and / or power headroom, the power headroom being used to indicate the difference between the reference transmission power and the maximum transmission power. The first parameter can also include other parameters, which are not limited.

[0020] In an optional implementation, the sending of the fifth information includes: periodically sending the fifth information; or, sending the fifth information when the first condition is met. The fifth information can be periodically sent, or can be sent when the first condition is met, or can be sent in other cases, which are not limited.

[0021] In an optional implementation, the first condition includes one or more of the following: the reference transmission power is less than or equal to a first threshold; or, the power headroom is greater than or equal to a second threshold; or, the path loss is less than or equal to a third threshold; or, a first distance is less than or equal to a fourth threshold, the first distance indicating the distance between the terminal and the network device. Optionally, if the first condition is met, it can be considered that the terminal device expects or requests to use the first transmission parameter. For example, the terminal device generally uses the second transmission parameter in the traditional way, and if the first condition is met, the terminal device can expect or request to use (or switch to) the first transmission parameter. Therefore, the first condition can also be understood as a condition for changing the transmission mode or the transmission parameter. Or, because the terminal device can expect or request to use the first transmission parameter when the first condition is met, the first condition can also be understood as the use or triggering condition of the first transmission parameter.

[0022] In a second aspect, a second communication method is provided, which can be applied to a network-side device, for example, also referred to as a network device. The network device is, for example, a network equipment, or other equipment including the function of the network equipment, or a circuit, or a chip system (or, chip) or other functional module capable of implementing the function of the network equipment, for example, arranged in the network equipment. The network equipment includes, for example, a core network equipment and / or an access network equipment. The network equipment is, for example, a serving network equipment of a terminal device. The method includes: sending third information, the third information corresponding to a first transmission parameter or a second transmission parameter, wherein the first transmission parameter includes one or more of a first maximum transmission power, a first transmission waveform, a first transmission link, or a first link indicator, the second transmission parameter includes one or more of a second maximum transmission power, a second transmission waveform, a second transmission link, or a second link indicator, and at least one included in the first transmission parameter is different from at least one included in the second transmission parameter; and receiving a first uplink signal sent by a terminal device in the first transmission parameter or the second transmission parameter.

[0023] In an optional implementation, the first maximum transmission power is a maximum transmission power corresponding to a first power class, and the maximum transmission power corresponding to the first power class is less than a maximum transmission power corresponding to a second power class, wherein the first power class corresponds to the first transmission parameter, and the second power class corresponds to the second transmission parameter, and the maximum transmission power corresponding to the second power class is 23 dBm, 26 dBm, or 29 dBm.

[0024] In an optional implementation, the first maximum transmission power is 0 dBm, 10 dBm, or 15 dBm.

[0025] In an optional implementation, the first maximum transmission power is determined according to a first value and a maximum transmission power corresponding to a second power class, and the maximum transmission power corresponding to the second power class is 23 dBm, 26 dBm, or 29 dBm.

[0026] In an optional implementation, the first transmission waveform is a single-carrier frequency domain equalization waveform; or, the first transmission waveform is a single-carrier modulation symbol waveform; or, the first transmission waveform is an MSK waveform; or, the first transmission waveform is a GMSK waveform.

[0027] In an optional implementation, the first transmission link has lower power consumption than the second transmission link; and / or, the first transmission link includes fewer types of devices than the second transmission link.

[0028] In an optional implementation, the first link metric has a smaller limit on the transmit link than the second link metric.

[0029] In an optional implementation, the method further comprises: sending first information, the first information being used to indicate a resource corresponding to the first transmit parameter, the resource being used to send the first uplink signal; and / or sending second information, the second information being used to indicate a resource corresponding to the second transmit parameter.

[0030] In an optional implementation, the method further comprises: receiving an uplink reference signal.

[0031] In an optional implementation, before receiving the uplink reference signal, the method further comprises: sending fourth information, the fourth information being used to indicate a transmit power of the uplink reference signal; or, before receiving the uplink reference signal, the method further comprises: receiving fourth information, the fourth information being used to indicate a transmit power of the uplink reference signal.

[0032] In an optional implementation, the method further comprises: receiving fifth information, the fifth information being used to indicate that the terminal expects to send an uplink signal by using the first transmit parameter, or the fifth information being used to indicate the first parameter.

[0033] In an optional implementation, the first parameter comprises a path loss and / or a power headroom, the power headroom being used to indicate a difference between a reference transmit power and a maximum transmit power.

[0034] As to the technical effects brought by the second aspect or various optional implementations, reference can be made to the introduction of the technical effects of the first aspect or corresponding implementations.

[0035] In a third aspect, a communication apparatus is provided. The communication apparatus can be the terminal device of any one of the first aspect to the second aspect. The communication apparatus has the functions of the terminal device. For example, the communication apparatus has the functions of any one of the first aspect to the second aspect, e.g., the communication apparatus includes modules or units or means for performing the operations of any one of the first aspect to the second aspect, which can be implemented in software and / or hardware. The communication apparatus can be a terminal device, or another device with terminal device functions, or a chip system (or chip or circuit) or another functional module that can implement the functions of the terminal device, e.g., the chip system or functional module is arranged in a terminal device. In an optional implementation, the communication apparatus includes a baseband device and a radio frequency device. In another optional implementation, the communication apparatus includes a processing unit (also sometimes referred to as a processing module) and a transceiver unit (also sometimes referred to as a transceiver module). The transceiver unit can implement the sending function and the receiving function. When the transceiver unit implements the sending function, it can be referred to as a sending unit (also sometimes referred to as a sending module). When the transceiver unit implements the receiving function, it can be referred to as a receiving unit (also sometimes referred to as a receiving module). The sending unit and the receiving unit can be the same functional module, which is referred to as a transceiver unit and can implement the sending function and the receiving function. Alternatively, the sending unit and the receiving unit can be different functional modules, and the transceiver unit refers to these functional modules in general.

[0036] In an optional implementation, the processing unit is configured to determine a first transmission parameter, wherein the terminal supports the first transmission parameter and a second transmission parameter, wherein the first transmission parameter includes one or more of a first maximum transmission power, a first transmission waveform, a first transmission chain, or a first link indicator, the second transmission parameter includes one or more of a second maximum transmission power, a second transmission waveform, a second transmission chain, or a second link indicator, and at least one included in the first transmission parameter is different from at least one included in the second transmission parameter; and the transceiver unit (or the sending unit) is configured to send a first uplink signal according to the first transmission parameter.

[0037] In an optional implementation, the communication apparatus further includes a storage unit (also sometimes referred to as a storage module), and the processing unit is configured to be coupled with the storage unit and execute programs or instructions in the storage unit to enable the communication apparatus to perform the functions of the terminal device of any one of the first aspect to the second aspect.

[0038] In a fourth aspect, a communication apparatus is provided. The communication apparatus can be the network apparatus of any of the first aspect to the third aspect. The communication apparatus has the functions of the network apparatus. For example, the communication apparatus has the functions of any of the first aspect to the third aspect, e.g., the communication apparatus includes modules or units or means for performing the functions of any of the first aspect to the third aspect, which can be implemented in software, or in hardware, or in a combination of software and hardware. The communication apparatus can be a network device, or another device with network device functions, or a chip system (or chip or circuitry) or another functional module that can implement the functions of the network device, e.g., the chip system or functional module is arranged in the network device. In an optional implementation, the communication apparatus includes a baseband device and a radio frequency device. In another optional implementation, the communication apparatus includes a processing unit (also sometimes referred to as a processing module) and a transceiver unit (also sometimes referred to as a transceiver module). The transceiver unit can be implemented as described in the third aspect.

[0039] In an optional implementation, the transceiver unit (or the sending unit) is configured to send third information, the third information corresponding to a first transmission parameter or a second transmission parameter, wherein the first transmission parameter includes one or more of a first maximum transmission power, a first transmission waveform, a first transmission chain, or a first link indicator, the second transmission parameter includes one or more of a second maximum transmission power, a second transmission waveform, a second transmission chain, or a second link indicator, and at least one included in the first transmission parameter is different from at least one included in the second transmission parameter; and the transceiver unit (or the receiving unit) is configured to receive a first uplink signal sent by the terminal using the first transmission parameter or the second transmission parameter.

[0040] In an optional implementation, the communication apparatus further includes a storage unit (also sometimes referred to as a storage module), and the processing unit is configured to be coupled to the storage unit and execute programs or instructions in the storage unit, so that the communication apparatus can perform the functions of the network apparatus of any of the first aspect to the third aspect.

[0041] In a fifth aspect, a communication apparatus is provided, which includes a memory and one or more processors. The memory is configured to store part or all of the necessary computer programs or instructions for implementing the functions related to the first aspect or the second aspect. The one or more processors can execute the computer programs or instructions, which, when executed, cause the communication apparatus to implement the method in any possible design or implementation of the first aspect or the second aspect.

[0042] In a possible design of the communication apparatus, the communication apparatus further includes an interface circuit, and the processor is configured to communicate with other apparatuses or components through the interface circuit.

[0043] In a possible design of the communication apparatus, the communication apparatus further includes the memory.

[0044] The communication apparatus can be a terminal, a communication module in the terminal, or a chip responsible for communication functions in the terminal, such as a modem chip (also referred to as a baseband chip) or an SoC or SIP chip including a modem module.

[0045] In a sixth aspect, a communication apparatus is provided, which includes a memory and one or more processors. The memory is configured to store part or all of a computer program or instructions necessary for implementing the functions related to the first aspect or the second aspect. The one or more processors are configured to execute the computer program or instructions, and when the computer program or instructions are executed, the communication apparatus implements the method in any possible design or implementation manner of the first aspect or the second aspect.

[0046] In a possible design of the communication apparatus, the communication apparatus further includes an interface circuit, and the processor is configured to communicate with other apparatuses or components through the interface circuit.

[0047] In a possible design of the communication apparatus, the communication apparatus further includes the memory.

[0048] The communication apparatus can be a network device, a communication module in the network device, or a chip responsible for communication functions in the network device, such as a modem chip (also referred to as a baseband chip) or an SoC or SIP chip including a modem module.

[0049] In a seventh aspect, a communication system is provided, which includes a network-side apparatus. The network-side apparatus is configured to perform the method performed by the network apparatus in any of the first aspect to the second aspect. For example, the network-side apparatus can be implemented by the communication apparatus in the fourth aspect or the sixth aspect.

[0050] Optionally, the communication system further includes a terminal-side apparatus. The terminal-side apparatus is configured to perform the method performed by the terminal apparatus in any of the first aspect to the second aspect. For example, the terminal-side apparatus can be implemented by the communication apparatus in the third aspect or the fifth aspect.

[0051] In an eighth aspect, a computer-readable storage medium is provided, which is configured to store a computer program or instructions. When the computer program or instructions are run, the method performed by the terminal apparatus or the network apparatus in the above aspects is implemented.

[0052] In a ninth aspect, a computer program product including instructions, which when executed on a computer, cause the method of any of the aspects to be implemented.

[0053] In a tenth aspect, a chip system is provided, including a processor and an interface, the processor being configured to call and execute instructions from the interface, so that the chip system implements the method of any of the aspects. BRIEF DESCRIPTION OF DRAWINGS

[0054] FIG. 1 is a schematic diagram of a network architecture to which embodiments of the present application are applied;

[0055] FIG. 2 is a flowchart of a communication method according to an embodiment of the present application;

[0056] FIG. 3 is a schematic diagram of a second transmission link according to an embodiment of the present application;

[0057] FIG. 4 is a schematic diagram of an apparatus according to an embodiment of the present application;

[0058] FIG. 5 is a schematic diagram of another apparatus according to an embodiment of the present application. DETAILED DESCRIPTION

[0059] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the embodiments of the present application will be further described in detail below with reference to the drawings.

[0060] In the embodiments of the present application, the number of a noun, unless otherwise specified, represents "a singular noun or a plural noun", i.e. "one or more". "At least one" means one or more, and "a plurality of" means two or more. "And / or" describes the association relationship of the associated objects, which means that there can be three kinds of relationships, for example, A and / or B, which can represent the following cases: A exists alone, A and B exist together, B exists alone, where A and B can be singular or plural. The character " / " generally represents an "or" relationship between the associated objects. For example, A / B means A or B. "At least one of the following" or the like means any combination of these items, including any combination of single item or multiple items. For example, at least one of a, b, or c means a, b, c, a and b, a and c, b and c, or a and b and c, where a, b, and c can be single or multiple.

[0061] The ordinal numbers such as "first", "second", and the like used in the embodiments of the present application are used to distinguish a plurality of objects, and are not used to limit the size, content, order, time sequence, priority, or importance of the plurality of objects. In addition, the numbering of steps in each embodiment introduced in the present application is only to distinguish different steps, and is not used to limit the order of the steps.

[0062] In the following, some terms or concepts in the embodiments of the present application are explained and described, so as to facilitate the understanding of those skilled in the art.

[0063] In the embodiments of the present application, the terminal device is a device with wireless transceiving function, which can be a fixed device, a mobile device, a handheld device (for example, a mobile phone), a wearable device, a vehicle-mounted device, or a wireless device (for example, a communication module, a modem, or a chip system, etc.) built in the above devices. The terminal device is used to connect people, things, machines, etc., and can be widely used in various scenarios, for example, including but not limited to the following scenarios: sensing scenarios, cellular communication, device-to-device (D2D) communication, vehicle to everything (V2X) communication, machine-to-machine / machine-type communications (M2M / MTC), internet of things (IoT), virtual reality (VR), augmented reality (AR), industrial control, self driving, remote medical, smart grid, smart furniture, smart office, smart wear, smart transportation, smart city, unmanned aerial vehicle, robot, indoor commercial scenarios (such as mobile phone screen projection, file sharing, mobile phone to VR glasses video transmission) and other scenarios. When the terminal device is applied to V2X, it can also be referred to as a V2X device, for example, a smart car, a digital car, an unmanned car, a self-driving car, a pure EV, a hybrid electric vehicle (HEV), a range extended EV (REEV), a plug-in HEV (PHEV), a new energy vehicle, a road site unit (RSU), etc. The terminal device can also be a device in D2D communication, for example, a water meter, a gas meter, etc.

[0064] In addition, in the embodiments of the present application, the terminal device can also be a terminal device in an internet of things (IoT) system. The IoT is an important part of future information technology development, and its main technical feature is to connect objects through communication technology and network, so as to realize the intelligent network of man-machine interconnection and object-object interconnection.

[0065] As introduced above, various terminal devices can be considered as vehicle-mounted terminal devices if they are located on a vehicle (for example, placed in or installed in a vehicle), and the vehicle-mounted terminal device is also referred to as an on-board unit (OBU). The terminal device of the present application can also be a vehicle-mounted module, a vehicle-mounted module group, a vehicle-mounted component, a vehicle-mounted chip or a vehicle-mounted unit built in a vehicle as one or more components or units, and the vehicle can implement the method of the present application through the built-in vehicle-mounted module, vehicle-mounted module group, vehicle-mounted component, vehicle-mounted chip or vehicle-mounted unit.

[0066] The terminal device can also be referred to as a UE, a terminal, an access station, a UE station, a remote station, a wireless communication device, or a user device, etc.

[0067] In the embodiments of the present application, the communication device for implementing the function of the terminal device can be a terminal device, which can be a terminal device or a device capable of supporting the terminal device to implement the function, such as a chip system, which can be installed in the terminal device. In the technical solutions provided in the embodiments of the present application, the terminal device is taken as an example to describe the technical solutions provided in the embodiments of the present application.

[0068] The network device in the embodiments of the present application, for example, includes an access network device (or an access network network element) and / or a core network device (or a core network network element). The access network device is a device with wireless transceiving function, used for communicating with the terminal device. The access network device includes but is not limited to a base station (a base transceiver station (BTS), a Node B, an evolved Node B (eNodeB) / eNB, or a next generation Node B (gNodeB) / gNB), a transmission reception point (TRP), a base station evolved in the future of the 3rd generation partnership project (3GPP), an access node in a wireless fidelity (Wi-Fi) system, a wireless relay node, a wireless backhaul node, and the like. The base station can be a macro base station, a micro base station, a pico base station, a small station, a relay station, and the like. A plurality of base stations can support a network of the same access technology or a network of different access technologies. A base station can include one or more co-sited or non-co-sited transmission reception points. The access network device can also be a wireless controller, a centralized unit (CU), and / or a distributed unit (DU) in a cloud radio access network (CRAN) scenario. The access network device can also be a server and the like. For example, the network device in the V2X technology can be a road side unit (RSU). The access network device is described below by taking a base station as an example. The base station can communicate with the terminal device or communicate with the terminal device through a relay station. The terminal device can communicate with a plurality of base stations in different access technologies. The core network device is used to implement mobile management, data processing, session management, policy and charging, and the like. The names of devices implementing core network functions in systems of different access technologies can be different, and the embodiments of the present application do not limit this.Taking a 5th generation (5G) system as an example, the core network device includes, for example, an access and mobility management function (AMF), a session management function (SMF), a policy control function (PCF), a user plane function (UPF), and the like.

[0069] In the CU-DU architecture, or in an open RAN (ORAN) system, the access network device can include one or more of a central unit (CU), a distributed unit (DU), a CU-control plane (CP), a CU-user plane (UP), or a radio unit (RU), and the like. The CU and the DU can be separately arranged, or can be included in the same network element, such as a baseband unit (BBU). The RU can be included in a radio frequency device or a radio frequency unit, such as a remote radio unit (RRU), an active antenna unit (AAU), or a remote radio head (RRH).

[0070] In different systems, the CU (or CU-CP and CU-UP), DU, or RU can also have different names, but those skilled in the art can understand their meanings. For example, in an ORAN system, the CU can also be referred to as an open CU (O-CU), the DU can also be referred to as an open DU (O-DU), the CU-CP can also be referred to as an open CU-CP (O-CU-CP), the CU-UP can also be referred to as an open CU-UP (O-CU-UP), and the RU can also be referred to as an open RU (O-RU). For the convenience of description, the CU, CU-CP, CU-UP, DU, and RU are taken as examples for description in the embodiments of the present application. Any one of the CU (or CU-CP, CU-UP), DU, and RU in the embodiments of the present application can be implemented by a software module, a hardware module, or a combination of a software module and a hardware module.

[0071] The CU and the DU can be configured according to protocol layer functions of the wireless network that they implement. For example, the CU is configured to implement functions of a packet data convergence protocol (PDCP) layer and above protocol layers (e.g., a radio resource control (RRC) layer and / or a service data adaption protocol (SDAP) layer, etc.). The DU is configured to implement functions of a PDCP layer and below protocol layers (e.g., one or more of a radio link control (RLC) layer, a media access control (MAC) layer, or a physical (PHY) layer). For another example, the CU is configured to implement functions of a PDCP layer and above protocol layers (e.g., an RRC layer and / or an SDAP layer), and the DU is configured to implement functions of a PDCP layer and below protocol layers (e.g., one or more of an RLC layer, a MAC layer, or a PHY layer).

[0072] The above configuration of the CU and the DU is merely an example, and the CU and the DU can be configured to have other functions as needed. For example, the CU or the DU can be configured to have functions of more protocol layers, or the CU or the DU can be configured to have partial processing functions of protocol layers. For example, partial functions of an RLC layer and functions of protocol layers above the RLC layer are configured in the CU, and remaining functions of the RLC layer and functions of protocol layers below the RLC layer are configured in the DU. For another example, the functions of the CU or the DU can be divided according to service types or other system requirements. For example, functions that require a shorter latency can be configured in the DU, and functions that do not require the shorter latency can be configured in the CU.

[0073] The DU and the RU can cooperate to implement functions of a PHY layer. One DU can be connected to one or more RUs. The DU and the RU can be configured in various manners according to design. For example, the DU is configured to implement baseband functions, and the RU is configured to implement intermediate radio frequency functions. For another example, the DU is configured to implement high layer functions in the PHY layer, and the RU is configured to implement low layer functions in the PHY layer or to implement the low layer functions and radio frequency functions. The high layer functions in the PHY layer can include a portion of functions of the PHY layer that are closer to a MAC layer. The low layer functions in the PHY layer can include another portion of functions of the PHY layer that are closer to the intermediate radio frequency side.

[0074] In the embodiments of the present application, the communication device for implementing the function of the network device can be referred to as a network device (for example, the device for implementing the function of the access network device is an access network device, and the device for implementing the function of the core network device is a core network device), which can be a network element or a network device, and can also be a device capable of supporting the network device or the network element to implement the function, such as a chip system, which can be installed in the network device. In the technical solutions provided in the embodiments of the present application, the network device is taken as an example to describe the technical solutions provided in the embodiments of the present application.

[0075] Different signals can have different requirements for transmission parameters, but the transmitter of the UE cannot meet the requirements of different signals because the processing manner of the transmitter for different signals is the same. Therefore, in the embodiments of the present application, the terminal device can support multiple sets of transmission parameters, for example, a first transmission parameter and a second transmission parameter, so that the corresponding transmission parameter can be selected from the multiple sets of transmission parameters when the signal is transmitted, so that the selected transmission parameter can meet the requirements of the corresponding signal. Moreover, because multiple sets of transmission parameters are set, the transmission process of the terminal device is more flexible.

[0076] The technical solutions provided in the embodiments of the present application can be applied in the fourth generation (4G) system, for example, the long term evolution (LTE) system, or can be applied in the 5G system, for example, the new radio (NR) system, or can also be applied in the next generation mobile communication system or other similar communication systems, for example, the sixth generation (6G) system, and the like, and the specific system is not limited. In addition, the technical solutions provided in the embodiments of the present application can also be applied in the D2D scenario, for example, the NR-D2D scenario, or applied in the V2X scenario, for example, the NR-V2X scenario. For example, the embodiments of the present application can be used in the fields of factory manufacturing, whole-house intelligence, intelligent driving, assisted driving, intelligent networked vehicles, or indoor commercial scenarios, and the like.

[0077] Please refer to FIG. 1, which is a schematic diagram of an application scenario of the embodiments of the present application. FIG. 1 includes a network device and a UE, and the UE can send an uplink signal to the network device.

[0078] The method provided by the embodiments of the present application is described below with reference to the drawings. In various embodiments of the present application, the "transmission parameter" and the "transmission mode" can be the same feature, and can be replaced with each other, for example, the "transmission parameter" described below can be replaced with the "transmission mode"; or the "transmission mode" and the "transmission parameter" can correspond to each other, for example, the "transmission parameter" described below can correspond to the corresponding "transmission mode". For example, the "first transmission parameter" can be replaced with the "first transmission mode", or the "first transmission mode" can correspond to the "first transmission parameter"; for another example, the "second transmission parameter" can be replaced with the "second transmission mode", or the "second transmission mode" can correspond to the "second transmission parameter". Or the "transmission mode" can include the "transmission parameter", and the "transmission parameter" described below can be included in the corresponding "transmission mode". For example, the "first transmission parameter" is included in the "first transmission mode", and the "second transmission parameter" is included in the "second transmission mode". In addition, the "transmission mode" can also have other names, such as "transmission manner" or "transmission type", and the like, which can be replaced with each other. In the description herein, the "transmission parameter" is taken as an example for description. The various embodiments herein can be applied to the network architecture shown in FIG. 1. For example, the UE described in the various embodiments herein can be the UE in FIG. 1, and the network device described in the various embodiments herein can be the network device in FIG. 1. In the corresponding drawings of the various embodiments herein, the steps represented by the dashed line are optional steps.

[0079] The embodiments of the present application provide a communication method, and FIG. 2 is a flowchart of the method.

[0080] S201, the UE determines a first transmission parameter.

[0081] The first transmission parameter is supported by the UE. For example, the UE supporting the first transmission parameter can be understood as that the UE can transmit a signal according to the first transmission parameter; or can be understood as that the transmission link included in the UE enables the UE to have the ability to transmit a signal according to the first transmission parameter; or can be understood as that the UE has the ability to transmit a signal according to the first transmission parameter; or can be understood as that the hardware resource and / or software resource possessed by the UE enables the UE to transmit a signal according to the first transmission parameter, and the like. For example, the first transmission parameter includes one or more of the following: a first maximum transmission power, a first transmission waveform, a first transmission link, or a first link index.

[0082] In addition, the UE also supports a second transmission parameter. The UE supporting the second transmission parameter can be understood as that the UE can transmit signals according to the second transmission parameter, or that the UE includes a transmission link that enables the UE to transmit signals according to the second transmission parameter, or that the UE has the ability to transmit signals according to the second transmission parameter, or that the UE has hardware resources and / or software resources that enable the UE to transmit signals according to the second transmission parameter, and the like. The second transmission parameter can include one or more of the following: a second maximum transmission power, a second transmission waveform, a second transmission link, or a second link indicator.

[0083] The UE supports the first transmission parameter and the second transmission parameter, which can be understood as that the UE can transmit signals according to the first transmission parameter and can also transmit signals according to the second transmission parameter, or that the UE includes a transmission link that enables the UE to transmit signals according to the first transmission parameter and enables the UE to transmit signals according to the second transmission parameter, or that the UE has the ability to transmit signals according to the first transmission parameter and has the ability to transmit signals according to the second transmission parameter, or that the UE has hardware resources and / or software resources that enable the UE to transmit signals according to the first transmission parameter and enable the UE to transmit signals according to the second transmission parameter, and the like. Optionally, at the same time, the UE can use one of the first transmission parameter and the second transmission parameter, that is, the two transmission parameters can not be used at the same time. For example, for a UE that has both low-power transmission requirements and high-power transmission requirements, the first transmission parameter and the second transmission parameter can be supported; for example, for a UE that has energy saving requirements, the first transmission parameter and the second transmission parameter can be supported. The specific UE that can support the two transmission parameters is not limited by the embodiments of the present application.

[0084] The first transmission parameter is different from the second transmission parameter. For example, the first transmission parameter includes at least one parameter different from at least one parameter included in the second transmission parameter. For example, the first transmission parameter includes a parameter different from a parameter included in the second transmission parameter, e.g., the type of the parameter included in the first transmission parameter is partially or completely different from the type of the parameter included in the second transmission parameter, e.g., the first transmission parameter includes a waveform parameter, and the value of the waveform parameter corresponds to a first transmission waveform, and the second transmission parameter does not include the waveform parameter, e.g., the second transmission parameter does not limit the transmission waveform corresponding to the second transmission parameter. For example, the first transmission parameter includes a parameter with a value different from a corresponding parameter included in the second transmission parameter, e.g., the first transmission parameter includes a first maximum transmission power different from a second maximum transmission power included in the second transmission parameter. Optionally, the first transmission parameter includes a parameter with a value different from a corresponding parameter included in the second transmission parameter, which can include that the first transmission parameter includes a parameter with an actual value different from an actual value of a corresponding parameter included in the second transmission parameter, and / or that the first transmission parameter includes a parameter with a candidate value completely or partially different from a candidate value of a corresponding parameter included in the second transmission parameter.

[0085] For example, when the UE uses the first transmission parameter, the first transmission parameter includes a first maximum transmission power with an actual value of 10 dBm; when the UE uses the second transmission parameter, the second transmission parameter includes a second maximum transmission power with an actual value of 23 dBm, and it can be seen that the first maximum transmission power is different from the second maximum transmission power. For example, the first transmission parameter includes a first maximum transmission power with a candidate value including 0 dBm, 10 dBm, and 15 dBm; the second transmission parameter includes a second maximum transmission power with a candidate value including 23 dBm, 26 dBm, and 29 dBm, and in this example, the candidate value of the first maximum transmission power is completely different from the candidate value of the second maximum transmission power, which indicates that the first maximum transmission power is different from the second maximum transmission power. For example, the first transmission parameter includes a first maximum transmission power with a candidate value including 10 dBm, 15 dBm, and 23 dBm; the second transmission parameter includes a second maximum transmission power with a candidate value including 23 dBm, 26 dBm, and 29 dBm, and in this example, the candidate value of the first maximum transmission power is partially different from the candidate value of the second maximum transmission power, which indicates that the first maximum transmission power is different from the second maximum transmission power.

[0086] Optionally, the first transmission parameter, for example, also referred to as a low-power consumption transmission parameter, etc., is not limited in name. In other words, the embodiments of the present application introduce a new transmission parameter, which can be suitable for low-power consumption transmission, and the signal transmission performed by using the transmission parameter can reduce the uplink transmission power consumption of the UE. In order to facilitate understanding, before introducing the first transmission parameter, the uplink transmission power consumption related content of the UE is introduced.

[0087] The power consumption of the 5G UE is high, and therefore, the UE energy saving is one of the hot topics. At present, the UE energy saving scheme designed on the standard mainly reduces the downlink reception power consumption of the UE, including reducing the downlink reception time or using a low-power consumption receiver. However, the uplink transmission power consumption of the UE is rarely discussed at present, and the embodiments of the present application expect to reduce the uplink transmission power consumption of the UE.

[0088] The uplink transmission power consumption of the UE can include the power consumption of the power amplifier and the transmission link power consumption. The power consumption of the power amplifier is related to the uplink transmission power and the efficiency of the power amplifier, for example, the power consumption of the power amplifier satisfies the following relationship:

[0089] According to formula 1, reducing the uplink transmission power can reduce the power consumption of the power amplifier, and increasing the efficiency of the power amplifier can also reduce the power consumption of the power amplifier.

[0090] When the uplink transmission power is large, the efficiency of the power amplifier is high, for example, about 40% to 50%, and when the uplink transmission power is small, the efficiency of the power amplifier is low, for example, about 10%. It can be seen that if the uplink transmission power is small, the efficiency of the power amplifier will also decrease, which is not conducive to saving the uplink transmission power consumption.

[0091] The transmission link power consumption can include the digital domain calculation power consumption and the device power consumption, and the device can include the device constituting the transmission link. For example, the transmission link of the UE can refer to FIG. 3, the digital domain calculation power consumption is, for example, the power consumption caused by the digital processing module in FIG. 3, which can perform one or more of the processing processes such as digital pre-distortion, signal correction, modulation and coding, fast Fourier transform (FFT) or inverse fast Fourier transform (IFFT). The device power consumption, for example, includes the power consumption caused by the devices such as the crystal oscillator, the frequency mixer, the digital-to-analog converter, etc. in FIG. 3. Among them, if the uplink transmission power is low, the proportion of the transmission link power consumption in the uplink transmission power consumption will be large.

[0092] According to the above introduction, when the uplink transmit power is low, the efficiency of the power amplifier is low, resulting in large power consumption of the power amplifier. In addition, when the uplink transmit power is low, the proportion of the transmit link power consumption is also large. Therefore, the first transmit parameter is introduced in the embodiments of the present application, which can be applicable to low uplink transmit power. Through the first transmit parameter, even if the uplink transmit power is low, the uplink transmit power consumption can be reduced, for example, the power consumption of the power amplifier and / or the transmit link power consumption is reduced, thereby realizing UE energy saving.

[0093] The first transmit parameter includes the following items.

[0094] 1. The first maximum transmit power.

[0095] The first maximum transmit power can have different implementation manners. As an optional implementation manner of the first maximum transmit power, the first maximum transmit power can be the maximum transmit power corresponding to the first power class, for example, the power class defined in the embodiments of the present application. The first power class can also have other names, for example, low-power-consumption power class, etc., and the embodiments of the present application do not limit the name. By defining a new power class to realize the first maximum transmit power, the UE does not need to perform an additional calculation process, and the implementation of the UE can be simplified.

[0096] The first power class can be different from the power class corresponding to the second maximum transmit power. The power class corresponding to the second maximum transmit power is called the second power class, for example, power class 1, power class 2 or power class 3. Among them, the maximum transmit power corresponding to the power class 1 is 29dBm, the maximum transmit power corresponding to the power class 2 is 26dBm, and the maximum transmit power corresponding to the power class 3 is 23dBm, that is, the second maximum transmit power is, for example, 23dBm, 26dBm or 29dBm. The first power class introduced in the embodiments of the present application is different from the three power classes, for example, the first power class can be defined as power class 4 or power class 5, or there can be other definition manners. Optionally, the maximum transmit power corresponding to the first power class (that is, the first maximum transmit power) can be less than the second maximum transmit power. For example, the second maximum transmit power is 23dBm, and the first maximum transmit power can be less than 23dBm; for example, the second maximum transmit power is 26dBm, and the first maximum transmit power can be less than 26dBm; for example, the second maximum transmit power is 29dBm, and the first maximum transmit power can be less than 29dBm. As an optional implementation manner, the first maximum transmit power is, for example, 0dBm, 10dBm or 15dBm, or it can also be other values less than the second maximum transmit power.

[0097] As another alternative implementation of the first maximum transmit power, the first maximum transmit power can be determined according to a first value and a second maximum transmit power, where the second maximum transmit power corresponds to a second power class, e.g., the second maximum transmit power is 23 dBm, 26 dBm or 29 dBm. The first value can also be referred to as a power back-off value, or can also have other names, without limitation. For example, the first value can have a physical meaning of a power back-off term for performing power back-off; or the first value can have no substantial physical meaning, or its physical meaning is just to obtain the first maximum transmit power, or its physical meaning is corresponding to the first transmit parameter, in which case the first value can not be configured as a power back-off term, but as a parameter for determining the first maximum transmit power. Alternatively, the first maximum transmit power can satisfy the following relationship: P CMAX,L,f,c ≤ P CMAX,f,c ≤ P CMAX,H,f,c (Equation 2) P CMAX,L,f,c = min{P EMAX,c - ΔT C,c , (P PowerClass - ΔP PowerClass )- max(max(MPR c , AMPR c )+ ΔT IB,c + ΔT C,c + ΔT RxSRS , PMPR c )} (Equation 3) P CMAX,H,f,c = min{P EMAX,c , P PowerClass - ΔP PowerClass} (Equation 4)

[0098] where P CMAX,f,c denotes the first maximum transmit power, e.g., the first maximum transmit power corresponds to a carrier f and a cell c. P CMAX,L,f,c denotes a lower limit of a value of the first maximum transmit power, P CMAX,H,f,c denotes an upper limit of a value of the first maximum transmit power. P PowerClass denotes the second maximum transmit power. MPR c , AMPR c and PMPR c denote the first value, e.g., MPR c is a maximum power back-off value, AMPR c denotes an additional power back-off value, and PMPR c denotes a power management corresponding power back-off value. ΔT C,c and ΔTIB,c represents an additional tolerance, e.g., an additional tolerance power backoff amount. ΔT RxSRS represents an additional tolerance when considering a sounding reference signal (SRS). P EMAX,c represents a maximum transmit power configured by the network (e.g., configured through system message or other signaling). ΔP PowerClass represents a power backoff value related to an uplink symbol ratio. min(x, y) represents taking the smaller value of x and y. max(x, y) represents taking the larger value of x and y.

[0099] For example, the UE can determine P CMAX,L,f,c according to Equation 3, and determine P CMAX,H,f,c according to Equation 4, so that according to Equation 2, the UE can determine a value from the values less than or equal to P CMAX,H,f,c and greater than or equal to P CMAX,L,f,c as the first maximum transmit power. For example, the UE can randomly determine a value from the values as the first maximum transmit power, or the UE can also determine the first maximum transmit power according to the first transmit parameter or the capability of the UE, etc.

[0100] As another optional implementation of the first maximum transmit power, the first maximum transmit power can be the maximum transmit power configured by the network corresponding to the newly introduced first transmit parameter, e.g., P EMAX,c . For example, the network device can configure independent P EMAX,c for the first transmit parameter and the second transmit parameter, respectively. Optionally, P EMAX,c corresponding to the first transmit parameter of the low-power transmission can be less than P EMAX,c corresponding to the second transmit parameter.

[0101] Regardless of the implementation of the first maximum transmit power as above, optionally, the first maximum transmit power can be less than the second maximum transmit power. According to the foregoing introduction of the uplink transmission power consumption, it can be known that by reducing the uplink transmission power, the power consumption of the power amplifier of the UE is reduced, which is equivalent to reducing the uplink transmission power consumption.

[0102] 2, the first transmit waveform.

[0103] Optionally, the first transmit waveform is a single carrier waveform, for example, the single carrier waveform is a single carrier-frequency domain equalization waveform, the single carrier-frequency domain equalization waveform can not need to be processed by a discrete fourier transform (DFT) and an inverse fast fourier transform (IFFT), or the number of points of the DFT and the IFFT is the same, so that the peak to average power ratio (PAPR) of the single carrier-frequency domain equalization waveform is relatively low, which is beneficial to improving the efficiency of the power amplifier of the UE and is also beneficial to suppressing the nonlinearity of the waveform. Optionally, in order to counter the multipath channel, a cyclic prefix (CP) can be added before a plurality of time domain modulation symbols included in each time domain symbol occupied by a signal using the first transmit waveform, which is beneficial to equalization processing in the frequency domain after the signal is subjected to FFT at the receiving end of the signal, so as to improve the demodulation performance of the signal.

[0104] Alternatively, the single carrier waveform is, for example, a single carrier modulation symbol waveform, for example, a CP is not added before a plurality of time domain modulation symbols included in each time domain symbol occupied by a signal using the first transmit waveform, and the single carrier modulation symbol waveform is obtained. The single carrier modulation waveform is beneficial to improving the spectral efficiency compared with the single carrier-frequency domain equalization waveform, but the single carrier modulation waveform needs a relatively complex receiving algorithm to remove the symbol level interference.

[0105] Alternatively, the first transmit waveform can also be a constant modulus waveform, for example, a minimum shift keying (MSK) or a Gaussian minimum-shift-keying (GMSK). The PAPR of the constant modulus waveform can be lower, which is beneficial to improving the efficiency of the power amplifier of the UE and is also beneficial to suppressing the nonlinearity of the waveform.

[0106] The first transmit waveform and the second transmit waveform can be different, for example, the second transmit waveform is a DFT-spread-orthogonal frequency division multiplexing (DFT-s-OFDM) waveform or a CP-OFDM waveform.

[0107] According to the foregoing introduction of the uplink transmit power consumption, it can be known that by improving the efficiency of the power amplifier of the UE, the power consumption of the power amplifier of the UE is reduced, which is equivalent to reducing the uplink transmit power consumption.

[0108] 3. The first transmit chain.

[0109] Optionally, the first transmission chain and the second transmission chain can satisfy one or more of the following: the first transmission chain has lower power consumption than the second transmission chain, the first transmission chain includes fewer types of devices than the second transmission chain, or the first transmission chain includes fewer devices than the second transmission chain.

[0110] The first transmission chain has lower power consumption, for example, by one or more of the following: the first transmission chain includes fewer types of devices, the first transmission chain includes fewer devices, or the first transmission chain includes devices with lower specifications. The first transmission chain includes fewer types of devices, for example, relative to the second transmission chain, i.e., the first transmission chain includes fewer types of devices than the second transmission chain. Similarly, the first transmission chain includes fewer devices, for example, relative to the second transmission chain, i.e., the first transmission chain includes fewer devices than the second transmission chain. The first transmission chain includes devices with lower specifications, for example, relative to the second transmission chain, i.e., at least one device included in the first transmission chain can have lower specifications than a corresponding device included in the second transmission chain.

[0111] Referring to FIG. 3, the second transmission chain includes a digital processing module, a digital-to-analog conversion module, a baseband filter, a mixer, a crystal oscillator, a power amplifier, a radio frequency filter, and an antenna. Optionally, the first transmission chain can include fewer types of devices than the second transmission chain, for example, the first transmission chain can not include a mixer and / or a digital-to-analog conversion module, etc., which is equivalent to the first transmission chain removing some modules relative to the second transmission chain. If the first transmission chain removes the mixer and / or the digital-to-analog conversion module, etc., the UE can use radio frequency modulation when transmitting signals using the first transmission chain. In addition, if the first transmission chain removes some modules relative to the second transmission chain, the first transmission chain includes fewer types of devices than the second transmission chain.

[0112] The first transmission chain and the second transmission chain can comprise modules or devices of the same type, for example both comprise crystal oscillators, but the specifications of the modules or devices of the same type comprised by the first transmission chain and the second transmission chain can be different, for example the specifications of at least one module or device comprised by the first transmission chain can be lower than the specifications of the modules or devices of the same type comprised by the second transmission chain. For example, the first transmission chain and the second transmission chain both comprise crystal oscillators, but the precision of the crystal oscillators comprised by the second transmission chain can be higher, and the precision of the crystal oscillators comprised by the first transmission chain can be lower than the precision of the crystal oscillators comprised by the second transmission chain. For another example, the first transmission chain and the second transmission chain both comprise digital-to-analog converters, but the precision of the digital-to-analog converters comprised by the second transmission chain can be higher, and the precision of the digital-to-analog converters comprised by the first transmission chain can be lower than the precision of the digital-to-analog converters comprised by the second transmission chain.

[0113] By reducing the number and / or the type of the modules or devices comprised by the first transmission chain, and / or by reducing the specifications of the modules or devices comprised by the first transmission chain, the first transmission chain can be simplified, thereby reducing the power consumption of the first transmission chain, and thus the uplink transmission power consumption of the UE can be reduced.

[0114] 4. The first link metric.

[0115] Optionally, the limitation of the first link metric on the transmission chain can be less than the limitation of the second link metric on the transmission chain. Optionally, the first link metric can correspond to the first transmission chain, or it can also be considered that the first link metric corresponds to the first transmission parameter; the second link metric can correspond to the second transmission chain, or it can also be considered that the second link metric corresponds to the second transmission parameter. If the first link metric corresponds to the first transmission chain, and the second link metric corresponds to the second transmission chain, then the limitation of the first link metric on the transmission chain can be specifically the limitation of the first link metric on the first transmission chain, and the limitation of the second link metric on the transmission chain can be specifically the limitation of the second link metric on the second transmission chain.

[0116] It can be seen that the limitation of the first link metric on the transmission chain is smaller, or it can also be understood that the first link metric is more relaxed relative to the second link metric, thereby the power consumption of the first transmission chain can be reduced, or the power consumption of the UE when using the first transmission parameter can be reduced.

[0117] The first link metric, for example, comprises one or more of a frequency error, an in-band metric, or an out-of-band metric, and the second link metric, for example, comprises one or more of a frequency error, an in-band metric, or an out-of-band metric, and the parameters comprised by the first link metric and the parameters comprised by the second link metric can be completely the same or partially the same.

[0118] Optionally, the first link metric may include in-band metrics such as one or more of the following: error vector magnitude (EVM), carrier leakage, or in-band emissions. The second link metric may also include one or more of the above-mentioned in-band metrics. For example, both the first and second link metrics may include the above-mentioned items, or the items included in the first link metric may be partially the same as those included in the second link metric, with the remaining items differing, or they may be completely different.

[0119] The first link metric includes out-of-band metrics such as one or more of the following: spectrum emission mask, adjacent channel leakage ratio, spurious emissions, or transmit intermodulation. The second link metric also includes out-of-band metrics such as one or more of the above. For example, both the first and second link metrics may include the above items, or the items included in the first link metric may be partially the same as those included in the second link metric and the remaining items may be different, or they may be completely different.

[0120] The limitations imposed on the transmission link by the first link metric can be reflected by the values ​​included in the first link metric; similarly, the limitations imposed on the transmission link by the second link metric can be reflected by the values ​​included in the second link metric. The limitations imposed on the transmission link by the first link metric are less than those imposed by the second link metric. For example, this can be achieved by ensuring that the value of at least one parameter included in the first link metric differs from the value of the corresponding parameter included in the second link metric, and that the value of at least one parameter included in the first link metric is more lenient than the value of the corresponding parameter included in the second link metric. An example is provided below for clarity.

[0121] 1. Frequency error, also known as transmission frequency error.

[0122] The frequency error included in the second link metric is, for example, ±0.1 parts per million (PPM). The frequency error included in the first link metric can be greater than the frequency error included in the second link metric, in order to relax the first link metric. For example, the frequency error included in the first link metric is ±1 PPM, ±5 PPM, ±10 PPM, or ±20 PPM, etc.

[0123] 2. In-band indicators.

[0124] (1) EVM.

[0125] The second link metric, for example, includes EVM, which can be referenced to Table 1.

[0126] Table 1

[0127] In Table 1, for example, when the modulation is BPSK, the corresponding EVM is 30%; when the modulation is QPSK, the corresponding EVM is 17.5%, and so on.

[0128] If the first link metric includes EVM, the EVM included by the first link metric can be looser than the EVM included by the second link metric. For example, for the same modulation, the EVM included by the first link metric can be greater than the EVM included by the second link metric. For example, the EVM included by the first link metric can satisfy one or more of the following: when the modulation is BPSK, the EVM included by the second link metric is 30%, and the EVM included by the first link metric can be greater than 30%; when the modulation is QPSK, the EVM included by the second link metric is 17.5%, and the EVM included by the first link metric can be greater than 17.5%; when the modulation is 16QAM, the EVM included by the second link metric is 12.5%, and the EVM included by the first link metric can be greater than 12.5%; when the modulation is 64QAM, the EVM included by the second link metric is 8%, and the EVM included by the first link metric can be greater than 8%; or, when the modulation is 256QAM, the EVM included by the second link metric is 3.5%, and the EVM included by the first link metric can be greater than 3.5%. Please refer to Table 2 for an example of the EVM included by the first link metric.

[0129] Table 2

[0130] In Table 2, no example is given for the EVM when the modulation is 16QAM, 64QAM, or 256QAM. Alternatively, the EVM under these modulations can also be greater than the corresponding EVM included by the second link metric. Alternatively, the first transmission parameters can also not support high order modulations, for example, can not support one or more of 16QAM, 64QAM, or 256QAM.

[0131] (2) Carrier leakage.

[0132] The second link metric, for example, includes carrier leakage, which can be referenced to Table 3.

[0133] Table 3

[0134]

[0135] ​​In Table 3, for example, when the output power is greater than 10 dBm, the corresponding carrier leakage is -28 dBc; when the output power is less than or equal to 10 dBm and greater than or equal to 0 dBm, the corresponding carrier leakage is -25 dBc, and so on. Here, the output power is, for example, the uplink transmit power.

[0136] If the first link metric includes carrier leakage, the carrier leakage included in the first link metric can be looser than the carrier leakage included in the second link metric. For example, when the output power belongs to the same range, the value of the carrier leakage included in the first link metric can be greater than the value of the carrier leakage included in the second link metric. For example, the carrier leakage included in the first link metric can satisfy one or more of the following: when the output power is greater than 10 dBm, the carrier leakage included in the second link metric is -28 dBc, while the carrier leakage included in the first link metric can be greater than -28 dBc; when the output power is less than or equal to 10 dBm and greater than or equal to 0 dBm, the carrier leakage included in the second link metric is -25 dBc, while the carrier leakage included in the first link metric can be greater than -25 dBc; when the output power is less than or equal to 0 dBm and greater than or equal to -30 dBm, the carrier leakage included in the second link metric is -20 dBc, while the carrier leakage included in the first link metric can be greater than -20 dBc; or, when the output power is less than or equal to -30 dBm and greater than or equal to -40 dBm, the carrier leakage included in the second link metric is -10 dBc, while the carrier leakage included in the first link metric can be greater than -10 dBc.

[0137] For an example of the carrier leakage included in the first link metric, please refer to Table 4.

[0138] Table 4

[0139] In Table 4, no example is given for the carrier leakage when the output power is greater than 10 dBm. Optionally, since the first link metric corresponds to the first transmit parameter, and the first transmit parameter is used for the low-power-consumption transmit mode, the uplink transmit power of the UE can be low when the first transmit parameter is used, for example, can not be greater than 10 dBm. Or, if the uplink transmit power of the UE can be greater than 10 dBm when the first transmit parameter is used, the corresponding carrier leakage can be greater than -28 dBc.

[0140] (3) In-band spurs.

[0141] The second link metric includes, for example, in-band spurs, which can refer to Table 5.

[0142] Table 5

[0143] In Table 5, max(x, y) represents taking the larger value of x and y. NRB L represents the number of resource blocks (RBs) corresponding to the total transmit bandwidth configuration. CRB This indicates the number of Relay Blocks (RBs) within the actual transmit bandwidth, and ΔRB represents the number of RBs separating the allocated RBs from the unallocated RBs. This represents the average transmit power. Sub-carrier spacing (SCS) represents the subcarrier spacing. I represents the in-phase component of the signal, and Q represents the quadrature component of the signal.

[0144] If the first link metric includes in-band spurious emissions, the in-band spurious emissions included in the first link metric can be less severe than those included in the second link metric. The in-band spurious emissions include multiple parameters, such as general, IQ image, and carrier leakage. The fact that the in-band spurious emissions included in the first link metric are less severe than those included in the second link metric means, for example, that at least one parameter included in the in-band spurious emissions of the first link metric is less severe than the corresponding parameter included in the in-band spurious emissions of the second link metric. For instance, the in-band spurious emissions of the first link metric satisfy one or more of the following: the general spurious emissions included in the first link metric are less severe than the general spurious emissions included in the second link metric; the IQ image included in the in-band spurious emissions of the first link metric is less severe than the IQ image included in the in-band spurious emissions of the second link metric; or, the carrier leakage included in the in-band spurious emissions of the first link metric is less severe than the carrier leakage included in the in-band spurious emissions of the second link metric.

[0145] The generality of the in-band spurious emissions in the first link metric is more relaxed than that in the second link metric. For example, the generality of the in-band spurious emissions in the first link metric satisfies the following relationship:

[0146] Where a can be greater than -25, and / or b can be greater than -57. For example, a is -22 and b is -54. Taking a = -22 and b = -54 as an example, formula 5 can be replaced with:

[0147] The IQ image included in the in-band spurious emissions of the first link metric is more relaxed than the IQ image included in the in-band spurious emissions of the second link metric. For example, it can be implemented such that when the output power is >10dBm, the image frequency corresponding to the first link metric can be greater than -28dB; and / or, when the output power is ≤10dBm, the image frequency corresponding to the first link metric can be greater than -25dB.

[0148] The carrier leakage included in the first link metric can be less than that included in the second link metric, as can be seen in the introduction of item (3) above.

[0149] Please refer to Table 6 for an example of carrier leakage included in the first link metric.

[0150] Table 6

[0151] 3. Out-of-band indicators.

[0152] (1) Spectrum emission template.

[0153] The second link metric includes, for example, a spectrum emission template, which can be found in Table 7.

[0154] Table 7

[0155] [Corrected according to Rule 91, March 27, 2025] In Table 7, Δf OOB Indicates the distance between in-band and out-of-band. (BW) channel This represents the channel bandwidth. For example, the channel bandwidth is 3MHz, the measurement bandwidth is 1% of the channel bandwidth, and Δf... OOB When the value is ±0-1, the corresponding spectral emission limit is -13dBm; the channel bandwidth is 50MHz, the measurement bandwidth is 30kHz, and Δf OOB When the value is ±0-1, the corresponding spectral emission limit is -24dBm, and so on.

[0156] If the first link metric includes a spectrum emission template, then the spectrum emission template included in the first link metric can be more lenient than the spectrum emission template included in the second link metric. For example, in Δf OOB When the spectrum emission limit of the first link indicator is greater than that of the second link indicator, and the measurement bandwidth and channel bandwidth are within the same range, the spectrum emission limit of the first link indicator can be greater than that of the second link indicator. For example, the spectrum emission template included in the first link indicator can satisfy one or more of the following: channel bandwidth is 3MHz, measurement bandwidth is 1% of channel bandwidth, Δf OOB When the range is ±0-1, the spectral emission limit corresponding to the second link indicator is -13dBm, while the spectral emission limit corresponding to the first link indicator can be greater than -13dBm; the channel bandwidth is 5MHz, the measurement bandwidth is 1% of the channel bandwidth, and Δf OOBWhen the range is ±0-1, the spectral emission limit corresponding to the second link indicator is -13dBm, while the spectral emission limit corresponding to the first link indicator can be greater than -13dBm; the channel bandwidth is 10MHz, 15MHz, 20MHz, 25MHz, 30MHz, 35MHz, 40MHz, or 45MHz; the measurement bandwidth is 1% of the channel bandwidth; Δf OOB When the range is ±0-1, the spectral emission limit corresponding to the second link indicator is -13dBm, while the spectral emission limit corresponding to the first link indicator can be greater than -13dBm; the channel bandwidth is 50MHz, 60MHz, 70MHz, 80MHz, 90MHz, or 100MHz; the measurement bandwidth is 30kHz; Δf OOB When the range is ±0-1, the spectral emission limit corresponding to the second link indicator is -24dBm, while the spectral emission limit corresponding to the first link indicator can be greater than -24dBm; the channel bandwidth is 3MHz, the measurement bandwidth is 1MHz, and Δf OOB When the range is ±1-5, the spectral emission limit corresponding to the second link indicator is -10dBm, while the spectral emission limit corresponding to the first link indicator can be greater than -10dBm; the channel bandwidth is 5MHz, the measurement bandwidth is 1MHz, and Δf OOB When the value is ±1-5, the spectral emission limit corresponding to the second link indicator is -10dBm, and the spectral emission limit corresponding to the first link indicator can be greater than -10dBm; the channel bandwidth is 10MHz or 15MHz or 20MHz or 25MHz or 30MHz or 35MHz or 40MHz or 45MHz, the measurement bandwidth is 1MHz, and Δf OOB When the range is ±1-5, the spectral emission limit corresponding to the second link indicator is -10dBm, while the spectral emission limit corresponding to the first link indicator can be greater than -10dBm; the channel bandwidth is 3MHz, the measurement bandwidth is 1MHz, and Δf OOB When the value is ±5-6, the spectral emission limit corresponding to the second link indicator is -25dBm, while the spectral emission limit corresponding to the first link indicator can be greater than -25dBm; the channel bandwidth is 5MHz, the measurement bandwidth is 1MHz, and Δf OOB When the value is ±5-6, the spectral emission limit corresponding to the second link indicator is -13dBm, while the spectral emission limit corresponding to the first link indicator can be greater than -13dBm; the channel bandwidth is 5MHz, the measurement bandwidth is 1MHz, and Δf OOB When the value is ±6-10, the spectral emission limit corresponding to the second link indicator is -25dBm, and the spectral emission limit corresponding to the first link indicator can be greater than -25dBm; the channel bandwidth is 10MHz or 15MHz or 20MHz or 25MHz or 30MHz or 35MHz or 40MHz or 45MHz, the measurement bandwidth is 1MHz, and Δf OOBWhen the value is ±1-5, the spectral emission limit corresponding to the second link indicator is -10dBm, and the spectral emission limit corresponding to the first link indicator can be greater than -10dBm; the channel bandwidth is 10MHz or 15MHz or 20MHz or 25MHz or 30MHz or 35MHz or 40MHz or 45MHz, the measurement bandwidth is 1MHz, and Δf OOB ±5-BW channel At that time, the spectral emission limit corresponding to the second link indicator is -13dBm, and the spectral emission limit corresponding to the first link indicator can be greater than -13dBm; or, the channel bandwidth is 10MHz or 15MHz or 20MHz or 25MHz or 30MHz or 35MHz or 40MHz or 45MHz, the measurement bandwidth is 1MHz, and Δf OOB ±BW channel -(BW channel When +5), the spectrum emission limit corresponding to the second link indicator is -25dBm, and the spectrum emission limit corresponding to the first link indicator can be greater than -25dBm.

[0157] Please refer to Table 8 for an example of the spectrum transmission templates included in the first link metrics.

[0158] Table 8

[0159] (2) Adjacent channel leakage power ratio.

[0160] The second link metric includes, for example, the adjacent channel leakage power ratio, which can be found in Table 9.

[0161] Table 9

[0162] Table 9 shows that the NR ACLR differs for different power categories. For example, the NR ACLR for power category 1 is 37 dB, the NR ACLR for power category 2 is 31 dB, and so on.

[0163] If the first link metric includes a spectrum emission template, the spectrum emission template included in the first link metric can be more lenient than the spectrum emission template included in the second link metric. For example, for the same power class, the NR ACLR corresponding to the first link metric can be greater than the NR ACLR corresponding to the second link metric. Alternatively, embodiments of this application introduce a first power class, and the NR ACLR corresponding to the first power class can be less than all the NR ACLRs in Table 9.

[0164] Please refer to Table 10 for an example of the adjacent channel leakage power ratio included in the first link metric.

[0165] Table 10

[0166] Table 10 uses a maximum transmit power of less than or equal to 10 dBm for the first power category as an example. If the maximum transmit power for the first power category is other values, such as less than 23 dBm, 26 dBm, or 29 dBm, then the NR ACLR for the first power category in Table 10 may also be different.

[0167] (3) Stray radiation.

[0168] The second link indicator includes, for example, stray radiation, which can be found in Table 11.

[0169] Table 11

[0170] [Correction 27.03.2025 according to Rule 91] In Table 11, for example, when the frequency range is greater than or equal to 9kHz and less than 150kHz and the measurement bandwidth is 1kHz, the maximum level of spurious radiation is -36dBm; for another example, when the frequency range is greater than or equal to 150kHz and less than 30MHz and the measurement bandwidth is 10kHz, the maximum level of spurious radiation is -36dBm, and so on.

[0171] If the first link metric includes spurious emissions, the spurious emissions included in the first link metric can be more lenient than those included in the second link metric. For example, with the same frequency range and measurement bandwidth, the maximum spurious emissions level corresponding to the first link metric can be greater than the maximum spurious emissions level corresponding to the second link metric. For example, the spurious emissions included in the first link metric satisfy one or more of the following: when the frequency range is greater than or equal to 9kHz and less than 150kHz, and the measurement bandwidth is 1kHz, the maximum spurious emissions level corresponding to the second link metric is -36dBm, while the maximum spurious emissions level corresponding to the first link metric can be greater than -36dBm; when the frequency range is greater than or equal to 150kHz and less than 30MHz, and the measurement bandwidth is 10kHz, the maximum spurious emissions level corresponding to the second link metric is -36dBm, while the maximum spurious emissions level corresponding to the first link metric can be greater than -36dBm; when the frequency range is greater than or equal to 30MHz and less than 1000MHz, and the measurement bandwidth is 100kHz, the spurious emissions level included in the second link metric can be more lenient than those included in the second link metric. The maximum spurious radiation level for the second link indicator is -36 dBm, while the maximum spurious radiation level for the first link indicator can be greater than -36 dBm; when the frequency range is greater than or equal to 1 GHz and less than 12.75 GHz, and the measurement bandwidth is 1 MHz, the maximum spurious radiation level for the second link indicator is -30 dBm, while the maximum spurious radiation level for the first link indicator can be greater than -30 dBm; when the frequency range is greater than or equal to 1 GHz and less than 12.75 GHz, and the measurement bandwidth is 1 MHz, the maximum spurious radiation level for the second link indicator is -25 dBm, while the maximum spurious radiation level for the first link indicator can be greater than -25 dBm; when the frequency range is greater than or equal to 12.75 GHz and less than 5 MHz, the maximum spurious radiation level for the second link indicator is -25 dBm, while the maximum spurious radiation level for the first link indicator can be greater than -25 dBm; when the frequency range is greater than or equal to 12.75 GHz and less than 5 MHz, the maximum spurious radiation level for the second link indicator is -30 ...30 dBm. th When the harmonic of the upper frequency edge of the UL operating band in GHz and the measurement bandwidth is 1MHz, the maximum level of spurious radiation corresponding to the second link indicator is -30dBm, while the maximum level of spurious radiation corresponding to the first link indicator can be greater than -30dBm; or, when the frequency range is greater than 12.75GHz and less than 26GHz and the measurement bandwidth is 1MHz, the maximum level of spurious radiation corresponding to the second link indicator is -30dBm, while the maximum level of spurious radiation corresponding to the first link indicator can be greater than -30dBm.

[0172] Please refer to Table 12 for an example of stray radiation included in the first link index.

[0173] Table 12

[0174] (4) Transmission intermodulation.

[0175] Second link metrics include, for example, transmit intermodulation, which can be found in Table 13.

[0176] Table 13

[0177] Table 6.5.2.4.1-1 represents the NR ACLR measurement bandwidth.

[0178] Table 6.5.2.4.1-1: NR ACLR measurement bandwidth

[0179] In Table 13, BW channel Indicates the channel bandwidth.

[0180] If the first link metric includes transmit intermodulation, the transmit intermodulation included in the first link metric can be less restrictive than that included in the second link metric. Transmit intermodulation includes multiple parameters, such as wanted signal channel bandwidth, interference signal frequency offset from channel center, interference CW signal level, intermodulation product, measurement bandwidth, and measurement offset from channel center. The transmit intermodulation included in the first link metric is less restrictive than that included in the second link metric. For example, at least one parameter included in the transmit intermodulation of the first link metric is less restrictive than the corresponding parameter included in the transmit intermodulation of the second link metric. For instance, the transmit intermodulation of the first link metric satisfies one or more of the following: the interference CW signal level included in the transmit intermodulation of the first link metric is less restrictive than the interference CW signal level included in the in-band spurious emissions of the second link metric; or, the intermodulation product included in the in-band spurious emissions of the first link metric is less restrictive than the intermodulation product included in the in-band spurious emissions of the second link metric.

[0181] In this context, the transmit intermodulation of the first link indicator includes a less restrictive CW signal level than the transmit intermodulation of the second link indicator. For example, the transmit intermodulation of the first link indicator includes a greater CW signal level than the transmit intermodulation of the second link indicator.

[0182] The intermodulation product included in the transmit intermodulation of the first link metric is less than that included in the transmit intermodulation of the second link metric. For example, when the out-of-band frequency offset is the same as the in-band frequency offset, the intermodulation product included in the transmit intermodulation of the first link metric is greater than that included in the transmit intermodulation of the second link metric.

[0183] Please refer to Table 14 for an example of transmit intermodulation included in the first link metrics.

[0184] Table 14

[0185] The first transmission parameter has been described above. The UE can determine the first transmission parameter, or determine whether to use the first or second transmission parameter, in different ways, as illustrated below.

[0186] As an optional implementation for the UE to determine the first transmission parameter, the UE determines the first transmission parameter itself. For example, the network device can transmit a downlink reference signal, and the UE can measure the downlink reference signal to determine the first parameter. The UE can then determine whether to use the first transmission parameter or the second transmission parameter based on the first parameter. The downlink reference signal may include, for example, a channel state information reference signal (CSI-RS), and / or, a synchronization signal and a physical broadcast channel (PBCH) block (SSB), or other downlink reference signals. The first parameter may include, for example, path loss and / or power headroom (PHR), or may also include other parameters that can be used to determine the transmission parameters.

[0187] For example, the first parameter includes path loss (PL), which is the downlink path loss between the UE and the network device measured by the UE based on the downlink reference signal. For instance, if the path loss is less than or equal to a third threshold, the first transmission parameter can be used; or, if the path loss is greater than the third threshold, the second transmission parameter can be used. If the path loss is small (e.g., less than or equal to the third threshold), it indicates that the large-scale loss between the UE and the network device is small or the channel conditions are good. In this case, the first transmission parameter can be considered because even if the uplink transmission power is low, the impact on signal transmission quality may be minimal due to the good channel conditions. Conversely, if the path loss is large (e.g., greater than or equal to the third threshold), it indicates that the large-scale loss between the UE and the network device is large or the channel conditions are poor. Therefore, the second transmission parameter can be considered to improve signal transmission quality through higher uplink transmission power. The third threshold can be predefined by the protocol, configured by the network device, or pre-configured in the UE.

[0188] For example, the first parameter includes a power margin, which can indicate the difference between a reference transmit power and a maximum transmit power. This maximum transmit power could be, for example, the first maximum transmit power or the second maximum transmit power described above.

[0189] The reference transmit power can be, for example, the transmit power corresponding to the uplink transmission steps already performed by the UE. For instance, if the UE performed an uplink transmission process before determining the first parameter, the reference transmit power could be the uplink transmit power used by the UE during that process. If the UE performed multiple uplink transmission processes before determining the first parameter, the reference transmit power could be the uplink transmit power of the UE's most recent uplink transmission process, or it could be the average uplink transmit power used by the UE over a period of time. Alternatively, the reference transmit power could be, for example, the uplink transmit power that the UE intends to use. For instance, if the UE did not perform an uplink transmission process before determining the first parameter, but the UE can determine an uplink transmit power that it might use if it performs an uplink transmission process in the future, then that uplink transmit power could also be used as the reference transmit power.

[0190] For example, if the power margin is greater than or equal to the second threshold, the first transmission parameter can be used; or, if the power margin is less than the second threshold, the second transmission parameter can be used. Alternatively, if the power margin is greater than the second threshold, the first transmission parameter can be used; or, if the power margin is less than or equal to the second threshold, the second transmission parameter can be used. If the power margin is large (e.g., greater than or equal to the second threshold), it indicates that the large-scale loss between the UE and the network device is small or the channel conditions are good, and the UE's uplink transmission does not need to use a large transmission power; in this case, the first transmission parameter can be considered. Conversely, if the power margin is small (e.g., less than or equal to the second threshold), it indicates that the large-scale loss between the UE and the network device is large or the channel conditions are poor; therefore, the second transmission parameter can be considered to improve signal transmission quality through higher uplink transmission power. The second threshold can be predefined by the protocol, configured by the network device, or pre-configured in the UE. Optionally, the second threshold may not be an existing power margin reporting threshold, but a separately configured threshold, such as a threshold configured or defined to trigger the power margin reporting of the first or second transmission parameter. Similarly, the other thresholds mentioned above (e.g., one or more of the first, third, or fourth thresholds) may also be configured or defined to determine the reporting of the first or second transmission parameter.

[0191] Optionally, if the UE determines itself to use either the first or second transmission parameters, the UE can send a fifth message to the network device. This fifth message indicates that the UE expects (or requests) to use either the first or second transmission parameters to send uplink signals. Based on the fifth message, the network device can determine whether the UE expects or requests to use the first or second transmission parameters to send uplink signals. Therefore, the network device can decide on the transmission parameters the UE should use based on the fifth message and / or other factors (such as network status). The transmission parameters decided by the network device may be the same as or different from the transmission parameters expected by the UE. The fifth information may be included, for example, in higher-layer signaling, such as radio resource control (RRC) signaling or media access control (MAC) control element (CE), for example, in a buffer state report (BSR); or, the fifth information may be included, for example, in physical layer signaling, such as carried through a physical uplink control channel (PUCCH), for example, in a schedule request (SR), or in a channel state information (CSI) report, or the fifth information may also be sent separately via physical layer signaling.

[0192] Optionally, the UE can periodically send a fifth message to the network device, allowing the UE and network device to periodically determine the transmission parameters the UE should use. Alternatively, the UE can also send a fifth message to the network device when a first condition is met. The first condition may include one or more of the following: the reference transmission power is less than or equal to a first threshold, or the power margin is greater than or equal to a second threshold, or the path loss is less than or equal to a third threshold, or the first distance is less than or equal to a fourth threshold. The first distance may indicate the distance between the UE and the network device. For information on parameters such as reference transmission power, power margin, and path loss, please refer to the preceding description. Optionally, if the first condition is met, it can be assumed that the UE expects or requests to use the first transmission parameter. For example, the UE typically uses the second transmission parameter in the traditional way; if the first condition is met, the UE may expect or request to use (or switch to) the first transmission parameter. Therefore, the first condition can also be understood as a condition for changing the transmission mode. Alternatively, because the UE may expect or request to use the first transmission parameter when the first condition is met, the first condition can also be understood as a condition for using or triggering the first transmission parameter.

[0193] As another optional implementation of the UE determining the first transmission parameter, the network device determines the first transmission parameter. As another optional implementation of the network device determining the first transmission parameter, the network device can determine the first transmission parameter based on an uplink reference signal. For example, the UE can transmit an uplink reference signal, the network device can measure the uplink reference signal to determine a second parameter, and the network device can determine whether to use the first or second transmission parameter based on the second parameter. The uplink reference signal may include, for example, SRS, or other uplink reference signals. The second parameter may include, for example, path loss, or may also include other parameters that can be used to determine the transmission parameter.

[0194] For example, the second parameter includes path loss, which the network device measures based on the uplink reference signal, for example, the uplink path loss between the UE and the network device. Optionally, the network device can know the UE's transmit power for the uplink reference signal, and the network device can also measure and determine the receive power of the uplink reference signal, so that the network device can determine the path loss based on the transmit power and the receive power. For example, the path loss is the difference between the transmit power and the receive power. Optionally, the UE's transmit power for the uplink reference signal can be determined by the network device, which can send fourth information to the UE, indicating the transmit power; upon receiving the fourth information, the UE can determine the transmit power, and thus the UE can use that transmit power to transmit the uplink reference signal. The fourth information sent by the network device is included, for example, in RRC signaling, MAC CE, or physical layer signaling. Alternatively, the UE can determine the transmit power for the uplink reference signal. The UE can send fourth information to the network device, which indicates the transmit power. Upon receiving the fourth information, the network device can determine the transmit power, and the UE will then use that transmit power to transmit the uplink reference signal. The fourth information sent by the UE may be included, for example, in RRC signaling, MAC CE, or physical layer signaling.

[0195] For example, if the path loss is less than or equal to the third threshold, the first transmission parameter can be used; or, if the path loss is greater than the third threshold, the second transmission parameter can be used. (See the previous section for more details.)

[0196] As another alternative implementation for the network device to determine the first transmission parameter, the network device can determine the first transmission parameter based on a first parameter, such as one obtained from the UE. For example, the UE can determine the first parameter (e.g., by measuring a downlink reference signal, as described above) and send it to the network device, allowing the network device to determine the first transmission parameter based on it. For a description of the content of the first parameter and how to determine the first transmission parameter based on it, please refer to the preceding text.

[0197] Optionally, the UE can send a fifth piece of information to the network device. This fifth piece of information may indicate the first parameter (as mentioned above, in this embodiment, the fifth piece of information may indicate that the UE expects or requests to send an uplink signal using the first or second transmission parameters, or indicate the first parameter). The network device can determine the first parameter based on the fifth piece of information, and thus the network device can decide on the transmission parameters that the UE should use based on the first parameter. For details on the signaling method used to send the fifth piece of information, please refer to the preceding text.

[0198] Optionally, the UE can periodically send the fifth information to the network device, allowing the UE and network device to periodically determine the transmission parameters the UE should use. Alternatively, the UE can also send the fifth information to the network device if the first condition is met. For details regarding the first condition, please refer to the preceding text.

[0199] Optionally, if the network device determines to use either the first or second transmission parameters, the network device may send third information to the UE, which may indicate whether to use the first or second transmission parameters to transmit the uplink signal. Based on the third information, the UE can determine whether to use the first or second transmission parameters to transmit the uplink signal, and thus the UE can transmit the uplink signal according to the transmission parameters indicated by the third information. The third information may be included, for example, in RRC signaling, MAC CE, or physical layer signaling.

[0200] S202, the UE sends a first uplink signal according to the first transmission parameters. Correspondingly, the network device receives the first uplink signal.

[0201] This embodiment of the application takes the UE using the first transmission parameters as an example. Therefore, the UE can send a first uplink signal according to the first transmission parameters. The network device has also determined that the UE is sending the first uplink signal using the first transmission parameters, and the network device can receive the first uplink signal.

[0202] Optionally, the UE can send a first uplink signal on the resource corresponding to the first transmission parameter according to the first transmission parameter, thus determining the resource corresponding to the first transmission parameter. As an optional implementation for the UE to determine the resource corresponding to the first transmission parameter, the UE can determine first information, which indicates the resource corresponding to the first transmission parameter. The UE can use this resource to send the first uplink signal. The first information indicates the resource corresponding to the first transmission parameter. For example, one indication method is configuration, i.e., the first information is used to configure the resource corresponding to the first transmission parameter, and this first information can also be called first configuration information; or, another indication method is scheduling, i.e., the first information is used to schedule the resource corresponding to the first transmission parameter. The first information is, for example, sent to the UE by the network device, i.e., the resource corresponding to the first transmission parameter is configured or scheduled by the network device. The first information is, for example, included in radio resource control (RRC) signaling, media access control (MAC) control element (CE), or physical layer signaling; or, the first information is, for example, information pre-configured within the UE, i.e., the resource corresponding to the first transmission parameter is pre-configured.

[0203] Additionally, if the UE determines to use the second transmission parameter, optionally, the UE can also send the corresponding uplink signal on the resource corresponding to the second transmission parameter according to the second transmission parameter. Therefore, the UE can also determine the resource corresponding to the second transmission parameter. As an optional implementation for the UE to determine the resource corresponding to the second transmission parameter, the UE can determine second information, which can indicate the resource corresponding to the second transmission parameter. The UE can use this resource to send uplink signals. The second information indicates the resource corresponding to the second transmission parameter. For example, one indication method is configuration, that is, the second information is used to configure the resource corresponding to the second transmission parameter, and this second information can also be called second configuration information; or, another indication method is scheduling, that is, the second information is used to schedule the resource corresponding to the second transmission parameter. The second information is, for example, sent to the UE by the network device, that is, the resource corresponding to the second transmission parameter is configured or scheduled by the network device, and the second information is, for example, included in RRC signaling, MAC CE, or physical layer signaling; or, the second information is, for example, information pre-configured in the UE, that is, the resource corresponding to the second transmission parameter is pre-configured.

[0204] The first information and the second information are independently configured or scheduled; "independent" means they can be configured to be the same or different. Specifically, the first information and the second information can be the same information, indicating both the resources corresponding to the first transmission parameter and the resources corresponding to the second transmission parameter; or they can be different information. If the first information originates from a network device, it can be included in RRC signaling, MAC CE, or physical layer signaling; similarly, if the second information originates from a network device, it can be included in RRC signaling, MAC CE, or physical layer signaling.

[0205] The following examples, using specific signals, illustrate the solutions of this application.

[0206] 1) The first uplink signal is the random access channel (RACH).

[0207] The first transmission parameter corresponds to a first RACH resource, and the second transmission parameter corresponds to a second RACH resource. The first RACH resource and the second RACH resource are different. The first RACH resource is, for example, a preamble resource, and the second RACH resource is, for example, a preamble resource. The preamble resource may include one or more of time-domain resources, frequency-domain resources, or code-domain resources. Optionally, the first RACH resource and the second RACH resource can be pre-configured resources. For example, the UE can determine the first RACH resource by combining pre-configured first information, and determine the second RACH resource by combining pre-configured second information.

[0208] Optionally, the UE can determine the transmission parameters itself. For example, the UE can determine the transmission mode based on the measured path loss by measuring the downlink reference signal. For details on how the UE determines the transmission mode based on path loss, please refer to the previous text.

[0209] If the UE determines to use the first transmission mode, the UE can use the first RACH resource corresponding to the first transmission mode to transmit uplink signals, which may include, for example, message 1 (Msg1) or message 3 (Msg3) in the random access procedure. Alternatively, if the UE determines to use the second transmission mode, the UE can use the second RACH resource corresponding to the second transmission mode to transmit uplink signals, which may include, for example, Msg1 or Msg3 in the random access procedure. Msg1 may include a random access channel (RACH) preamble, and Msg3 may be carried, for example, through the physical uplink shared channel (PUSCH).

[0210] 2) The first uplink signal is a dynamic indication or dynamic scheduling signal. The dynamic indication or scheduling signal is, for example, a signal indicated or scheduled via physical layer signaling.

[0211] As an optional implementation of the first uplink signal for dynamic indication or scheduling, the first uplink signal may be, for example, a dynamically scheduled PUSCH, or a dynamically triggered CSI or SRS. For instance, the network device may schedule the first uplink signal via the physical downlink control channel (PDCCH) of an uplink scheduling grant (e.g., uplink grant, UL grant), which is carried through the PUSCH. Optionally, the PUSCH may belong to a resource corresponding to a first transmission parameter. This resource can be configured using first information, and the network device may then schedule the corresponding resource for the UE from the resources corresponding to the first transmission parameter. Furthermore, the resource corresponding to a second transmission parameter can be configured using second information, and the network device may then schedule the corresponding resource for the UE from the resources corresponding to the second transmission parameter.

[0212] Optionally, the transmission parameters can be determined by the network device. For example, the network device can determine a first transmission parameter or a second transmission parameter based on an uplink reference signal from the UE, or the network device can determine the first transmission parameter or the second transmission parameter based on a first parameter from the UE. The network device can send third information to the UE to indicate the first transmission parameter or the second transmission parameter. The third information may be included, for example, in the PDCCH used for scheduling or triggering the first uplink signal. For example, the third information and the information used for scheduling or triggering the first uplink signal may be the same information carried in the PDCCH. In this case, the third information can be used to schedule or trigger the first uplink signal and can also indicate the first transmission parameter or the second transmission parameter. Alternatively, the third information and the information used for scheduling or triggering the first uplink signal may be different information, both of which are carried in the PDCCH. The UE can determine whether to use the first transmission parameter or the second transmission parameter based on the third information, so that the UE can transmit the uplink signal according to the first transmission parameter or the second transmission parameter. For example, the third information indicates the first transmission parameter, and the UE transmits the first uplink signal according to the first transmission parameter.

[0213] The PDCCH (such as the PDCCH carrying the aforementioned UL_grant) can carry third information in different ways. As an alternative implementation, existing fields in the PDCCH can be used to carry the third information. For example, one or more of the following existing fields in the PDCCH can be used to implement the third information: PUSCH resource allocation field, modulation and coding scheme (MCS) field, hybrid automatic repeat request (HARQ) process field, or power control field.

[0214] Alternatively, as another optional implementation of the PDCCH carrying third information, a new field can be added to the PDCCH to carry the third information. For example, a first field can be added to the PDCCH, which can occupy one or more bits and can carry the third information. The first field is also called a transmit mode indicator field or a transmit parameter indicator field, etc., and there is no limitation on the name.

[0215] As another alternative implementation of the first uplink signal for dynamic indication or scheduling, the first uplink signal may be, for example, a dynamically indicated or scheduled PUCCH, such as a HARQ-acknowledgment (ACK). For example, the network device may indicate the first uplink signal via a PDCCH of downlink scheduling allocation (e.g., downlink assignment, DL assignment) that is carried by the PUCCH.

[0216] Optionally, the transmission parameters can be determined by the network device. For example, the network device can determine the first or second transmission parameters based on the uplink reference signal from the UE, or the network device can determine the first or second transmission parameters based on the first parameters from the UE. The network device can send third information to the UE to indicate the first or second transmission parameters. The third information may be included, for example, in the PDCCH used for scheduling or triggering the first uplink signal. For example, the third information and the information used for scheduling or triggering may be the same information carried in the PDCCH. In this case, the third information can be used to schedule or trigger the first uplink signal and can also indicate the first or second transmission parameters. Alternatively, the third information and the information used for scheduling or triggering may be different information, both of which are carried in the PDCCH.

[0217] The PDCCH (such as the PDCCH carrying the aforementioned DL assignment) carries third information, and this can be implemented in different ways. As an optional implementation of carrying third information on the PDCCH, existing fields in the PDCCH can be used to carry the third information. For example, one or more of the following existing fields in the PDCCH can be used to implement the third information: PUCCH resource indication field, HARQ process field, or power control field. Taking carrying third information through the PUCCH resource indication field as an example, this PUCCH resource indication field can occupy 3 bits. For example, if the PUCCH resource indication field indicates four types of PUCCH resources, then 2 bits can be used to indicate these four types of PUCCH resources, and the other bit can be used as the third information. For example, 2 bits correspond to four values, or four states, which correspond to the four types of PUCCH resources; the other bit corresponds to two values, "0" and "1", or two states, which respectively indicate the first transmission parameter and the second transmission parameter. For example, the eight possible values ​​or states corresponding to these three bits can be divided into two groups, with each group containing four possible values ​​or states. Each group's four values ​​or states can indicate four types of PUCCH resources and can also indicate the first or second transmission parameter. For instance, "000", "100", "110", and "010" can form one group, called group A; "001", "011", "101", and "111" can form another group, called group B. Taking the example where the two most significant bits indicate PUCCH resources and the least significant bit indicates the first or second transmission mode.

[0218] For example, in group A, the two high-order "00" bits of "000" indicate PUCCH resource 1, and in group B, the two high-order "00" bits of "001" also indicate PUCCH resource 1. The low-order "0" bit in group A can indicate the first transmit parameter, and the low-order "1" bit in group B can indicate the second transmit parameter. Similarly, in group A, the two high-order "01" bits of "010" indicate PUCCH resource 2, and in group B, the two high-order "01" bits of "011" also indicate PUCCH resource 2. The low-order "0" bit in group A can indicate the first transmit parameter, and the low-order "1" bit in group B can indicate the second transmit parameter. In group A, the two high-order "10" bits of "100" indicate PUCCH resource 3, and the two high-order "10" bits of "101" in group B also indicate PUCCH resource 3. The low-order "0" bit in group A can indicate the first transmit parameter, and the low-order "1" bit in group B can indicate the second transmit parameter. In group A, the two high-order "11" bits of "110" indicate PUCCH resource 4, and the two high-order "11" bits of "111" in group B also indicate PUCCH resource 4. The low-order "0" bit in group A can indicate the first transmit parameter, and the low-order "1" bit in group B can indicate the second transmit parameter.

[0219] Alternatively, the PUCCH resource indication field can also indicate the first and second transmission parameters in other ways. For example, the three bits occupied by the PUCCH resource can be used as a whole to indicate the first or second transmission parameters through eight values ​​or eight states, without any restrictions.

[0220] Alternatively, as another optional implementation of the PDCCH carrying third information, a new field can be added to the PDCCH to carry the third information. For example, a second field can be added to the PDCCH, which can occupy one or more bits and can carry the third information. The second field can also be called a transmit mode indicator field or a transmit parameter indicator field, etc., and there is no limitation on the name.

[0221] 3) The first uplink signal is a semi-statically configured signal. This semi-static signal can be, for example, a signal configured via higher-layer signaling, such as RRC signaling or MAC CE.

[0222] Optionally, the first uplink signal may be a semi-statically configured scheduling request, CSI report, or SRS, etc. The first uplink signal is carried through a PUSCH, therefore it can also be considered a semi-statically configured PUSCH. For example, the network device configures the first uplink signal through higher-layer signaling such as RRC signaling or MAC CE. Optionally, this PUSCH may belong to the resource corresponding to the first transmission parameter. The resource corresponding to the first transmission parameter can be configured through the first information, and the network device then configures the corresponding resource for the UE from the resource corresponding to the first transmission parameter. Additionally, the resource corresponding to the second transmission parameter can be configured through the second information, and the network device then configures the corresponding resource for the UE from the resource corresponding to the second transmission parameter.

[0223] Optionally, the transmission parameters can be determined by the network device. For example, the network device can determine a first transmission parameter or a second transmission parameter based on an uplink reference signal from the UE, or the network device can determine the first transmission parameter or the second transmission parameter based on a first parameter from the UE. The network device can send third information to the UE to indicate the first transmission parameter or the second transmission parameter. The third information may be included, for example, in higher-layer signaling used to configure the first uplink signal. For example, the third information and the information used to configure the first uplink signal may be the same information, carried in the higher-layer signaling. In this case, the third information can be used to configure the first uplink signal and can also indicate the first transmission parameter or the second transmission parameter. Alternatively, the third information and the information used to configure the first uplink signal may be different information, both carried in the higher-layer signaling. The UE can determine whether to use the first transmission parameter or the second transmission parameter based on the third information, so that the UE can transmit the uplink signal according to the first transmission parameter or the second transmission parameter. For example, the third information indicates the first transmission parameter, and the UE transmits the first uplink signal according to the first transmission parameter.

[0224] The higher-layer signaling carrying third information can be implemented in different ways. As one optional implementation, existing fields in the higher-layer signaling can be used to carry the third information. Alternatively, as another optional implementation, a new field can be added to the higher-layer signaling to carry the third information. For example, a third field can be added to the higher-layer signaling; this third field may occupy one or more bits and can carry the third information. The third field may also be called a transmit mode indicator field or a transmit parameter indicator field, etc., and there is no limitation on the name.

[0225] In this embodiment, the UE can support multiple sets of transmission parameters, such as a first transmission parameter and a second transmission parameter. This allows the UE to select the appropriate transmission parameter from these multiple sets when transmitting a signal, ensuring that the selected parameter meets the requirements of the corresponding signal. Furthermore, the use of multiple transmission parameters makes the UE's transmission process more flexible. Additionally, this embodiment provides a first transmission mode. The first maximum transmission power and / or first transmission waveform corresponding to the first transmission mode can help reduce the power consumption of the power amplifier; the first transmission link and / or first link index corresponding to the first transmission mode can help reduce the power consumption of the transmission link. Therefore, the first transmission mode helps reduce the uplink transmission power consumption of the UE, enabling energy saving for the UE.

[0226] In this application, the embodiments are described using an uplink transmission scenario as an example. Therefore, the solution provided by this application can reduce the uplink transmission power consumption of the UE. However, this application can also be applied to other transmission scenarios, where the power consumption reduction is in the corresponding transmission direction. For example, this application can also be applied to sidelink (SL) transmission scenarios, where the solution provided by this application can reduce the sidelink transmission power consumption of the UE. The preceding text uses the uplink scenario as an example, specifically focusing on reducing the uplink transmission power consumption of the UE.

[0227] Figure 4 shows a schematic diagram of a communication device provided in an embodiment of this application. The communication device 400 can be the UE or its circuit system as described in the embodiment shown in Figure 2, used to implement the method corresponding to the UE in the above method embodiments. Alternatively, the communication device 400 can be the network device or its circuit system as described in the embodiment shown in Figure 2, used to implement the method corresponding to the network device in the above method embodiments. For example, one type of circuit system is a chip system.

[0228] The communication device 400 includes at least one processor 401. The processor 401 can be used for internal processing within the device to implement certain control processing functions. Optionally, the processor 401 includes instructions. Optionally, the processor 401 can store data. Optionally, different processors can be independent devices, located in different physical locations, or located on different integrated circuits. Optionally, different processors can be integrated into one or more processors, for example, integrated on one or more integrated circuits.

[0229] Optionally, the communication device 400 includes one or more memories 403 for storing instructions. Optionally, the memories 403 may also store data. The processor and the memories may be separate or integrated together.

[0230] Optionally, the communication device 400 includes a communication line 402 and at least one communication interface 404. Since the memory 403, communication line 402, and communication interface 404 are all optional, they are all represented by dashed lines in Figure 4.

[0231] Optionally, the communication device 400 may further include a transceiver and / or an antenna. The transceiver can be used to send information to or receive information from other devices. The transceiver may be referred to as a transceiver unit, transceiver circuit, input / output interface, etc., and is used to realize the transmission and reception functions of the communication device 400 via the antenna. Optionally, the transceiver includes a transmitter and a receiver. For example, the transmitter can be used to generate a radio frequency (RF) signal from a baseband signal, and the receiver can be used to convert the RF signal back into a baseband signal.

[0232] Processor 401 may include a general-purpose central processing unit (CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more integrated circuits for controlling the execution of programs according to the present application.

[0233] Communication line 402 may include a path for transmitting information between the aforementioned components.

[0234] Communication interface 404 uses any transceiver-like device for communicating with other devices or communication networks, such as Ethernet, radio access network (RAN), wireless local area network (WLAN), wired access network, etc.

[0235] Memory 403 may be a read-only memory (ROM) or other type of static storage device capable of storing static information and instructions, random access memory (RAM) or other type of dynamic storage device capable of storing information and instructions, or electrically erasable programmable read-only memory (EEPROM), compact disc read-only memory (CD-ROM) or other optical disc storage, optical disc storage (including compressed optical discs, laser discs, optical discs, digital universal optical discs, Blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or any other medium capable of carrying or storing desired program code in the form of instructions or data structures and accessible by a computer, but not limited thereto. Memory 403 may exist independently and be connected to processor 401 via communication line 402. Alternatively, memory 403 may be integrated with processor 401.

[0236] The memory 403 stores computer execution instructions for implementing the scheme of this application, and the processor 401 controls the execution of these instructions. The processor 401 executes the computer execution instructions stored in the memory 403 to implement the steps performed by the UE or network device in the embodiment shown in FIG2.

[0237] Optionally, the computer execution instructions in the embodiments of this application may also be referred to as application code, and the embodiments of this application do not specifically limit this.

[0238] In a specific implementation, as one example, processor 401 may include one or more CPUs, such as CPU0 and CPU1 in FIG4.

[0239] In a specific implementation, as one embodiment, the communication device 400 may include multiple processors, such as processors 401 and 405 in FIG. 4. Each of these processors may be a single-core (single-CPU) processor or a multi-core (multi-CPU) processor. Here, a processor may refer to one or more devices, circuits, and / or processing cores for processing data (e.g., computer program instructions).

[0240] When the device shown in Figure 4 is a chip, such as a UE chip or a network device chip, the chip includes a processor 401 (and may also include a processor 405), a communication line 402, and a communication interface 404. Optionally, it may include a memory 403. Specifically, the communication interface 404 may be an input interface, pins, or circuits, etc. The memory 403 may be a register, cache, etc. The processor 401 and processor 405 may be a general-purpose CPU, microprocessor, ASIC, or one or more integrated circuits for controlling the execution of a program that controls the communication method of any of the above embodiments.

[0241] This application embodiment can divide the device into functional modules according to the above method examples. For example, each function can be divided into its own functional modules, or two or more functions can be integrated into one processing module. The integrated modules can be implemented in hardware or software functional modules. It should be noted that the module division in this application embodiment is illustrative and only represents one logical functional division. In actual implementation, there may be other division methods. For example, when dividing each functional module according to its own function, Figure 5 is a schematic diagram of a device. This device 500 can be the UE or network device involved in the above method embodiments, or a chip in the UE or a chip in the network device. The device 500 includes a processing unit 502 and a transceiver unit 501.

[0242] It should be understood that the device 500 can be used to implement the steps performed by the UE or network device in the communication method of the embodiments of this application. The relevant features can be referred to the embodiment shown in Figure 2 above, and will not be repeated here.

[0243] Optionally, the functions / implementation processes of the transceiver unit 501 and processing unit 502 in Figure 5 can be implemented by the processor 401 in Figure 4 calling computer execution instructions stored in memory 403. Alternatively, the functions / implementation processes of the processing unit 502 in Figure 5 can be implemented by the processor 401 in Figure 4 calling computer execution instructions stored in memory 403, and the functions / implementation processes of the transceiver unit 501 in Figure 5 can be implemented by the communication interface 404 in Figure 4.

[0244] Optionally, when the device 500 is a chip or circuit, the function / implementation process of the transceiver unit 501 can also be implemented through pins or circuits. Optionally, the transceiver unit 501 may include a transmitting unit and / or a receiving unit, whereby the transmitting unit implements the transmitting function and the receiving unit implements the receiving function; or, the transceiver unit 501 may be an integral module capable of implementing both transmitting and / or receiving functions. Optionally, the transceiver unit 501 can be implemented using a transceiver.

[0245] This application also provides a computer-readable storage medium storing a computer program or instructions that, when executed, implement the methods performed by the UE or network device in the aforementioned method embodiments. Thus, the functions described in the above embodiments can be implemented as software functional units and sold or used as independent products. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to it, or a part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, ROM, RAM, magnetic disks, or optical disks.

[0246] This application also provides a computer program product comprising: computer program code, which, when run on a computer, causes the computer to perform the method executed by the UE or network device in any of the foregoing method embodiments.

[0247] This application also provides a processing apparatus, including a processor and an interface; the processor is used to execute the methods performed by the UE or network device involved in any of the above method embodiments.

[0248] In the above embodiments, implementation can be achieved entirely or partially through software, hardware, firmware, or any combination thereof. When implemented using software, it can be implemented entirely or partially in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of this application are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that integrates one or more available media. The available medium can be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., solid-state disk (SSD)).

[0249] The various illustrative logic units and circuits described in the embodiments of this application can be implemented or operate the described functions using a general-purpose processor, digital signal processor (DSP), ASIC, field-programmable gate array (FPGA), or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof. The general-purpose processor can be a microprocessor; alternatively, it can be any conventional processor, controller, microcontroller, or state machine. The processor can also be implemented using a combination of computing devices, such as a digital signal processor and a microprocessor, multiple microprocessors, one or more microprocessors combined with a digital signal processor core, or any other similar configuration.

[0250] The steps of the methods or algorithms described in the embodiments of this application can be directly embedded in hardware, software units executed by a processor, or a combination of both. The software units can be stored in RAM, flash memory, ROM, erasable programmable read-only memory (EPROM), EEPROM, registers, hard disks, removable disks, CD-ROMs, or any other form of storage medium in the art. Exemplarily, the storage medium can be connected to the processor so that the processor can read information from the storage medium and write information to the storage medium. Optionally, the storage medium can also be integrated into the processor. The processor and storage medium can be disposed in an ASIC, which can be disposed in the terminal device. Optionally, the processor and storage medium can also be disposed in different components of the terminal device.

[0251] These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer-implemented process, such that the instructions, which execute on the computer or other programmable apparatus, provide steps for implementing the functions specified in one or more flowcharts and / or one or more block diagrams.

[0252] The contents of the various embodiments of this application can be referenced to each other. Unless otherwise specified or there is a logical conflict, the terms and / or descriptions between different embodiments are consistent and can be referenced to each other. The technical features in different embodiments can be combined to form new embodiments according to their inherent logical relationship.

[0253] It is understood that in the embodiments of this application, the UE and / or network device may perform some or all of the steps in the embodiments of this application. These steps or operations are merely examples. In the embodiments of this application, other operations or variations of various operations may also be performed. Furthermore, the steps may be performed in different orders as presented in the embodiments of this application, and it is not necessary to perform all the operations in the embodiments of this application.

Claims

1. A communication method, characterized in that, The method includes: A first transmission parameter is determined, wherein the terminal supports the first transmission parameter and a second transmission parameter, wherein the first transmission parameter includes one or more of a first maximum transmission power, a first transmission waveform, a first transmission link, or a first link indicator, and the second transmission parameter includes one or more of a second maximum transmission power, a second transmission waveform, a second transmission link, or a second link indicator, wherein at least one of the first transmission parameters is different from at least one of the second transmission parameters. The first uplink signal is sent according to the first transmission parameters.

2. The method according to claim 1, characterized in that, The first maximum transmit power is the maximum transmit power corresponding to the first power category. The maximum transmit power corresponding to the first power category is less than the maximum transmit power corresponding to the second power category. The first power category corresponds to the first transmit parameter, the second power category corresponds to the second transmit parameter, and the maximum transmit power corresponding to the second power category is 23dBm, 26dBm, or 29dBm.

3. The method according to claim 2, characterized in that, The first maximum transmit power is 0dBm, 10dBm or 15dBm.

4. The method according to claim 1, characterized in that, The first maximum transmit power is determined based on a first value and the maximum transmit power corresponding to the second power category, wherein the maximum transmit power corresponding to the second power category is 23dBm, 26dBm or 29dBm.

5. The method according to any one of claims 1 to 4, characterized in that, The first transmitted waveform is a single-carrier frequency-domain equalized waveform; or, The first transmitted waveform is a single-carrier modulated symbol waveform; or, The first transmitted waveform is a minimum frequency shift keying (MSK) waveform; or, The first transmitted waveform is a Gaussian minimum frequency shift keying (GMSK) waveform.

6. The method according to any one of claims 1 to 5, characterized in that, The power consumption of the first transmission link is lower than that of the second transmission link; and / or, The first transmission link includes fewer types of devices than the second transmission link.

7. The method according to any one of claims 1 to 6, characterized in that, The first link metric imposes less limitation on the transmission link than the second link metric imposes on the transmission link.

8. The method according to any one of claims 1 to 7, characterized in that, The method further includes: Determine first information, which is used to indicate the resources corresponding to the first transmission parameters, and the resources are used to transmit the first uplink signal; and / or, Determine the second information, which is used to indicate the resources corresponding to the second transmission parameters.

9. The method according to any one of claims 1 to 8, characterized in that, The method further includes: Send uplink reference signal; Receive third information, which is used to indicate that an uplink signal is sent using the first transmission parameters.

10. The method according to claim 9, characterized in that, Before sending the uplink reference signal, the method further includes: Receive fourth information, the fourth information being used to indicate the transmit power of the uplink reference signal; or, A fourth message is sent, which indicates the transmit power of the uplink reference signal.

11. The method according to claim 9 or 10, characterized in that, The third information is also used to schedule the first uplink signal.

12. The method according to any one of claims 1 to 8, characterized in that, The method further includes: Send a fifth message, which indicates that the terminal expects to send an uplink signal using the first transmission parameters, or the fifth message indicates the first parameter.

13. The method according to claim 12, characterized in that, The first parameter includes path loss and / or power margin, the power margin being used to indicate the difference between the reference transmit power and the maximum transmit power.

14. The method according to claim 12 or 13, characterized in that, Send the fifth message, including: The fifth message is sent periodically; or, If the first condition is met, send the fifth message.

15. The method according to claim 14, characterized in that, The first condition includes one or more of the following: The reference transmit power is less than or equal to the first threshold; or, The power margin is greater than or equal to the second threshold; or, Road loss is less than or equal to the third threshold; or, The first distance is less than or equal to the fourth threshold, whereby the first distance indicates the distance between the terminal and the network device.

16. A communication method, characterized in that, The method includes: Send a third message, which corresponds to a first transmission parameter or a second transmission parameter. The first transmission parameter includes one or more of a first maximum transmission power, a first transmission waveform, a first transmission link, or a first link indicator. The second transmission parameter includes one or more of a second maximum transmission power, a second transmission waveform, a second transmission link, or a second link indicator. At least one of the first transmission parameters is different from at least one of the second transmission parameters. The receiving terminal sends a first uplink signal using the first transmission parameters or the second transmission parameters.

17. The method according to claim 16, characterized in that, The first maximum transmit power is the maximum transmit power corresponding to the first power category. The maximum transmit power corresponding to the first power category is less than the maximum transmit power corresponding to the second power category. The first power category corresponds to the first transmit parameter, the second power category corresponds to the second transmit parameter, and the maximum transmit power corresponding to the second power category is 23dBm, 26dBm, or 29dBm.

18. The method according to claim 17, characterized in that, The first maximum transmit power is 0dBm, 10dBm or 15dBm.

19. The method according to claim 16, characterized in that, The first maximum transmit power is determined based on a first value and the maximum transmit power corresponding to the second power category, wherein the maximum transmit power corresponding to the second power category is 23dBm, 26dBm or 29dBm.

20. The method according to any one of claims 16 to 19, characterized in that, The first transmitted waveform is a single-carrier frequency-domain equalized waveform; or, The first transmitted waveform is a single-carrier modulated symbol waveform; or, The first transmitted waveform is an MSK waveform; or, The first transmitted waveform is a GMSK waveform.

21. The method according to any one of claims 16 to 20, characterized in that, The power consumption of the first transmission link is lower than that of the second transmission link; and / or, The first transmission link includes fewer types of devices than the second transmission link.

22. The method according to any one of claims 16 to 21, characterized in that, The first link metric imposes less limitation on the transmission link than the second link metric imposes on the transmission link.

23. The method according to any one of claims 16 to 22, characterized in that, The method further includes: Send first information, the first information being used to indicate the resources corresponding to the first transmission parameters, the resources being used to send the first uplink signal; and / or, Send a second message, which indicates the resource corresponding to the second transmission parameter.

24. The method according to any one of claims 16 to 23, characterized in that, The method further includes: Receive the uplink reference signal.

25. The method according to claim 24, characterized in that, Before receiving the uplink reference signal, the method further includes: Send a fourth message, the fourth message being used to indicate the transmit power of the uplink reference signal; or, Receive fourth information, which is used to indicate the transmit power of the uplink reference signal.

26. The method according to any one of claims 16 to 23, characterized in that, The method further includes: The terminal receives a fifth message, which indicates that it expects to send an uplink signal using the first transmission parameters, or the fifth message indicates the first parameter.

27. The method according to claim 26, characterized in that, The first parameter includes path loss and / or power margin, the power margin being used to indicate the difference between the reference transmit power and the maximum transmit power.

28. A communication device, characterized in that, The communication device includes a module for performing the method as described in any one of claims 1 to 15, or a module for performing the method as described in any one of claims 16 to 27.

29. A communication device, characterized in that, The communication device includes a processor, which is configured to perform the method as described in any one of claims 1 to 15, or the method as described in any one of claims 16 to 27.

30. A computer-readable storage medium, characterized in that, The computer-readable storage medium is used to store a computer program that, when run on a computer, causes the method as described in any one of claims 1 to 15 to be performed, or causes the method as described in any one of claims 16 to 27 to be performed.

31. A computer program product, characterized in that, The computer program product includes a computer program that, when run on a computer, causes the computer to perform the method as described in any one of claims 1 to 15, or causes the computer to perform the method as described in any one of claims 16 to 27.

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