User equipment and network-side node, methods performed thereby, and storage medium

Abstract

This disclosure relates to 5G or 6G communication systems for supporting higher data rates than 4G communication systems such as LTE. This disclosure provides a user equipment and a network-side node, a method performed thereon, and a storage medium. A method performed by the user equipment includes: receiving a reference signal on a first carrier; determining power control parameters associated with a second carrier based on information associated with the reference signal and at least one piece of information associated with the first and second carriers; and determining the transmission power of at least one uplink physical channel or physical signal on the second carrier based on the power control parameters.

Description

Technical Field

[0001] This disclosure relates to the field of communications, and more specifically to a user equipment, a network-side node, a method performed by the user equipment, a method performed by the network-side node, and a computer-readable storage medium. Background Technology

[0002] Given the successive generations of wireless communication development, these technologies have primarily been developed for human-oriented services such as voice calls, multimedia services, and data services. With the commercialization of 5th-generation (5G) communication systems, the number of connected devices is expected to grow exponentially. These will increasingly connect to communication networks. Examples of the Internet of Things (IoT) can include vehicles, robots, drones, home appliances, displays, smart sensors connected to various infrastructures, construction machinery, and factory equipment. Mobile devices are expected to evolve in various forms, such as augmented reality glasses, virtual reality headsets, and holographic devices. Efforts are underway to develop improved 6G communication systems to provide a wide range of services by connecting hundreds of billions of devices and things in the 6th-generation (6G) era.

[0003] The 6G communication system, expected to be commercially available around 2030, will offer significant improvements in all aspects compared to existing 5G systems. Its peak speed will reach at least 50 Gbit / s, user experience speed will reach at least 300 Mbit / s, air interface latency will be less than 1 ms, and air interface reliability will reach [missing information]. In addition to the basic communication indicators mentioned above, 6G communication systems will also have sensing capabilities, AI-related capabilities, and better security, interoperability, and sustainability.

[0004] To achieve the aforementioned performance indicators in 6G communication systems, more advanced air interface and network technologies are needed. Currently, the evolution of extreme multiple input multiple output (XMIMO) is being considered, including the use of very large-scale antenna arrays, the development and evolution of distributed antenna systems, and the design of MIMO air interface algorithms assisted by artificial intelligence (AI). This technology can achieve higher spectral efficiency, greater coverage, and more precise positioning and sensing capabilities. Furthermore, technologies that contribute to improving high-frequency coverage, including metamaterial-based lenses and antennas, novel antenna architectures, and reconfigurable intelligence surfaces (RIS), also require further evolution and development.

[0005] To meet the new functionalities added to 6G communication systems, it is necessary to develop new technologies in areas such as network energy saving, air interface security, and network security, while also studying the feasibility of converged technologies such as integrated communication and sensing.

[0006] In addition, to improve spectrum efficiency and overall network performance, the following technologies have been developed for 6G communication systems: full-duplex technology to enable uplink and downlink transmissions to use the same frequency resources simultaneously; network technologies that utilize satellites, high-altitude platform stations (HAPS), etc., in a comprehensive manner; improved network architecture to support mobile base stations, etc., and to enable network operation optimization and automation; dynamic spectrum sharing technology based on spectrum usage prediction and conflict avoidance; the use of artificial intelligence (AI) in wireless communication to improve overall network operation by utilizing AI from the design phase of 6G development and internalizing end-to-end AI support functions; and next-generation distributed computing technologies that overcome the computing power limitations of user equipment (UE) by leveraging ultra-high-performance communication and computing resources available on the network, such as mobile edge computing (MEC), cloud, etc. Furthermore, efforts are continuing to enhance connectivity between devices, optimize networks, promote the software-defined networking of network entities, and increase the openness of wireless communications by designing new protocols to be used in 6G communication systems, developing mechanisms for achieving hardware-based secure environments and secure data use, and developing technologies for maintaining privacy.

[0007] The research and development of 6G communication systems, encompassing both person-to-machine (P2M) and machine-to-machine (M2M) hyper-connectivity, is expected to deliver the next wave of hyper-connected experiences. Specifically, services such as truly immersive extended reality (XR), high-fidelity mobile holograms, and digital replicas are anticipated to be provided through 6G communication systems. Furthermore, services such as remote surgery for enhanced safety and reliability, industrial automation, and emergency response will be available via 6G communication systems, enabling the technology to be applied across a wide range of sectors including industry, healthcare, automotive, and home appliances. Summary of the Invention

[0008] According to a first aspect of the present disclosure, a method performed by a user equipment is provided, comprising: receiving a reference signal on a first carrier; determining power control parameters associated with a second carrier based on information associated with the reference signal and at least one piece of information associated with the first carrier and a second carrier; and determining a transmission power of at least one uplink physical channel or physical signal on the second carrier based on the power control parameters.

[0009] Optionally, the at least one piece of information related to the first carrier and the second carrier includes at least one of the following: a first offset value related to the frequency of the first carrier and the frequency of the second carrier; a second offset value related to the radio frequency parameters of the downlink transmit antenna or beam and / or network-side nodes of the first carrier and the second carrier; and a third offset value related to the radio frequency parameters of the UE for the first carrier and the second carrier.

[0010] Optionally, the first offset value includes an offset value determined based on the ratio of the reference frequency of the second carrier to the reference frequency of the first carrier; the second offset value is obtained according to the higher layer configuration; and / or, the third offset value includes at least one of the following: an instantaneous difference between the radio frequency parameters of the first carrier and the radio frequency parameters of the second carrier, the mean of the instantaneous difference over a period of time, or the difference between the mean of the first time period and the mean of the second time period.

[0011] Optionally, the information associated with the reference signal includes at least one of the following: information related to the carrier on which the reference signal is transmitted; measurements based on the reference signal.

[0012] Optionally, the measurement based on the reference signal includes at least one of the following: the received power of the reference signal, the received power of the filtered reference signal, and the path loss determined based on the reference signal.

[0013] Optionally, the power control parameters include at least one of the following: target received power corresponding to the second carrier or target received power offset corresponding to the second carrier; path loss corresponding to the second carrier or path loss offset corresponding to the second carrier; and path loss compensation factor corresponding to the second carrier.

[0014] Optionally, the first carrier and the second carrier are different carriers of the same serving cell, or the first carrier and the second carrier are carriers corresponding to different serving cells.

[0015] Optionally, the method further includes: determining a first path loss based on the reference signal; wherein the power control parameters associated with the second carrier include: a second path loss, the second path loss being determined based on the first path loss and the at least one piece of information; wherein the transmission power of at least one uplink physical channel or physical signal on the second carrier is determined based on the second path loss.

[0016] Optionally, the second path loss is determined by: determining the path loss offset corresponding to the second carrier based on the at least one piece of information; and determining the second path loss based on the first path loss and the path loss offset.

[0017] Optionally, the method further includes: determining a first path loss based on the reference signal; and determining a first target received power for the at least one uplink physical channel or physical signal according to a higher-layer configuration; wherein the power control parameters associated with the second carrier include: the first path loss and a second target received power for the at least one uplink physical channel or physical signal on the second carrier; wherein the second target received power is determined based on the first target received power and the at least one piece of information; wherein the transmit power of the at least one uplink physical channel or physical signal on the second carrier is determined based on the first path loss and the second target received power.

[0018] Optionally, the second target received power is determined by: determining the target received power offset corresponding to the second carrier based on the at least one piece of information; and determining the second target received power based on the first target received power and the target received power offset.

[0019] Optionally, the method further includes: transmitting capability information, wherein the capability information indicates whether the UE supports determining power control parameters associated with a second carrier based on a reference signal on a first carrier; receiving indication information; wherein determining the power control parameters associated with the second carrier based on information associated with the reference signal and at least one piece of information associated with the first carrier and the second carrier includes: if the indication information indicates that the UE determines the power control parameters associated with the second carrier based on a reference signal on a first carrier, determining the power control parameters associated with the second carrier based on information associated with the reference signal and the at least one piece of information.

[0020] Optionally, before receiving the reference signal on the first carrier, the method further includes: determining, according to configuration information, the carrier to which the reference signal is transmitted, wherein the carrier includes a second carrier or a first carrier, wherein receiving the reference signal on the first carrier includes: receiving the reference signal on the first carrier in response to determining that the carrier is the first carrier.

[0021] Optionally, the configuration information includes: first configuration information regarding a reference signal for at least one uplink physical channel or physical signal on the second carrier, wherein the first configuration information includes a carrier index of the reference signal for at least one uplink physical channel or physical signal being transmitted, wherein the carrier index indicates the carrier.

[0022] Optionally, the method further includes: acquiring second configuration information related to power control of at least one uplink physical channel or physical signal on the second carrier; wherein determining power control parameters associated with the second carrier based on information associated with the reference signal and at least one piece of information associated with the first carrier and the second carrier includes: determining power control parameters associated with the second carrier based on the reference signal on the first carrier in response to the second configuration information indicating that the power control parameters associated with the second carrier are determined based on the information associated with the reference signal and the at least one piece of information.

[0023] Optionally, the second configuration information includes at least one of the following: information indicating whether the power control parameters corresponding to the first carrier are available, and information indicating whether the first carrier and the second carrier have a preset association relationship, wherein the power control parameters corresponding to the first carrier are power control parameters determined based on the reference signal of the uplink physical channel / physical signal of the same type as the at least one uplink physical channel / physical signal transmitted by the UE on the first carrier.

[0024] Optionally, the method further includes: determining the reference signal for determining power control parameters associated with the second carrier based on a predetermined association relationship between the first carrier and the second carrier; or, acquiring a configuration of multiple reference signals on multiple first carriers, determining the multiple reference signals based on the configuration of the multiple reference signals, and determining one of the multiple reference signals as the reference signal for determining the power control parameters associated with the second carrier according to a first rule, wherein the multiple reference signals include: a downlink reference signal transmitted on each of the multiple first carriers.

[0025] Optionally, the predetermined association relationship includes: the second carrier is a carrier of the first secondary cell, the first carrier is a carrier of the primary cell or a carrier of the activated second secondary cell, wherein the activation operation of the second secondary cell precedes the activation operation of the first secondary cell, wherein, when the first carrier and the second carrier have the predetermined association relationship, a reference signal on the carrier of the primary cell or the carrier of the activated second secondary cell is determined as the reference signal for determining the power control parameters associated with the second carrier; or, the first rule includes: based on the frequency position of each first carrier and the second carrier, determining the reference signal on the first carrier whose frequency is closest to the second carrier among the plurality of first carriers as the reference signal for determining the power control parameters associated with the second carrier.

[0026] Optionally, the method further includes: determining whether a power control parameter determined based on information associated with the reference signal and the at least one piece of information satisfies a first condition; if the power control parameter determined based on information associated with the reference signal and the at least one piece of information does not satisfy the first condition, then sending uplink request information, the uplink request information being used to request a reference signal on a second carrier configured to determine the power control parameters associated with the second carrier; wherein determining the transmission power of at least one uplink physical channel or physical signal on the second carrier based on the power control parameters includes: if the power control parameter determined based on information associated with the reference signal and the at least one piece of information satisfies the first condition, then determining the transmission power based on the power control parameters.

[0027] Optionally, the first condition includes: the difference between the power control parameters determined based on information associated with the reference signal and the at least one of the information and the power control parameters determined based on information associated with the reference signal on the second carrier is less than a threshold.

[0028] According to a second aspect of the present disclosure, a method performed by a network-side node is provided, the method comprising: transmitting a reference signal on a first carrier to a user equipment (UE); and receiving at least one uplink physical channel or physical signal of the UE on a second carrier, wherein the transmission power of the at least one uplink physical channel or physical signal is determined based on power control parameters, the power control parameters being determined based on information associated with the reference signal and at least one piece of information associated with the first carrier and the second carrier.

[0029] Optionally, the at least one piece of information related to the first carrier and the second carrier includes at least one of the following: a first offset value related to the frequency of the first carrier and the frequency of the second carrier; a second offset value related to the downlink transmit antenna or beam of the first carrier and the second carrier, and / or the radio frequency parameters of the network-side nodes; and a third offset value related to the radio frequency parameters of the UE for the first carrier and the second carrier.

[0030] Optionally, the first offset value includes an offset value determined based on the ratio of the reference frequency of the second carrier to the reference frequency of the first carrier; the second offset value is obtained according to the higher layer configuration; and / or, the third offset value includes at least one of the following: an instantaneous difference between the radio frequency parameters of the first carrier and the radio frequency parameters of the second carrier, the mean of the instantaneous difference over a period of time, or the difference between the mean of the first time period and the mean of the second time period.

[0031] Optionally, the information associated with the reference signal includes at least one of the following: information related to the carrier on which the reference signal is transmitted; measurements based on the reference signal.

[0032] Optionally, the measurement based on the reference signal includes at least one of the following: the received power of the reference signal, the received power of the filtered reference signal, and the path loss determined based on the reference signal.

[0033] Optionally, the power control parameters include at least one of the following: target received power corresponding to the second carrier or target received power offset corresponding to the second carrier; path loss corresponding to the second carrier or path loss offset corresponding to the second carrier; and path loss compensation factor corresponding to the second carrier.

[0034] Optionally, the first carrier and the second carrier are different carriers of the same serving cell, or the first carrier and the second carrier are carriers corresponding to different serving cells.

[0035] Optionally, the power control parameters include: a second path loss determined based on a first path loss and the at least one piece of information, wherein the first path loss is determined based on the reference signal; and wherein the transmission power of the at least one uplink physical channel or physical signal is determined based on the second path loss.

[0036] Optionally, the second path loss is determined by: determining the path loss offset corresponding to the second carrier based on the at least one piece of information; and determining the second path loss based on the first path loss and the path loss offset.

[0037] Optionally, the power control parameters include: a first path loss and a second target received power of the at least one uplink physical channel or physical signal; wherein the first path loss is determined based on the reference signal, the second target received power is determined based on the first target received power and the at least one piece of information, wherein the first target received power is determined according to a higher layer configuration; wherein the transmit power of the at least one uplink physical channel or physical signal is determined based on the first path loss and the second target received power.

[0038] Optionally, the second target received power is determined by: determining the target received power offset corresponding to the second carrier based on the at least one piece of information; and determining the second target received power based on the first target received power and the target received power offset.

[0039] Optionally, the method further includes: receiving capability information, wherein the capability information indicates whether the UE supports determining the power control parameters based on a reference signal on a first carrier; and sending indication information, wherein, when the indication information indicates that the UE determines the power control parameters based on a reference signal on a first carrier, the power control parameters are determined based on information associated with the reference signal and the at least one piece of information.

[0040] Optionally, the method further includes: sending configuration information to the UE, wherein the configuration information is used by the UE to determine the carrier on which the reference signal is transmitted.

[0041] Optionally, the configuration information includes: first configuration information regarding a reference signal for at least one uplink physical channel or physical signal on the second carrier, wherein the first configuration information includes a carrier index of the reference signal for at least one uplink physical channel or physical signal being transmitted, wherein the carrier index indicates the carrier.

[0042] Optionally, the method further includes sending second configuration information to the UE related to power control of at least one uplink physical channel or physical signal on a second carrier, wherein, if the second configuration information indicates that the power control parameters are determined based on a reference signal on a first carrier, the power control parameters are determined based on information associated with the reference signal and the at least one piece of information.

[0043] Optionally, the second configuration information includes at least one of the following: information indicating whether the power control parameters corresponding to the first carrier are available, and information indicating whether the first carrier and the second carrier have a preset association relationship, wherein the power control parameters corresponding to the first carrier are power control parameters determined based on the reference signal of the uplink physical channel / physical signal of the same type as the at least one uplink physical channel / physical signal transmitted by the UE on the first carrier.

[0044] Optionally, the reference signal used to determine the power control parameters is determined based on a predetermined association between the first carrier and the second carrier; or, the method further includes: a configuration for transmitting a plurality of reference signals on a plurality of first carriers, wherein the configuration of the plurality of reference signals is used to determine the plurality of reference signals, wherein the reference signal used to determine the power control parameters is a reference signal determined from the plurality of reference signals according to a first rule, wherein the plurality of reference signals includes: a downlink reference signal transmitted on each of the plurality of first carriers.

[0045] Optionally, the predetermined association relationship includes: the second carrier is a carrier of the first secondary cell, the first carrier is a carrier of the primary cell or a carrier of the activated second secondary cell, wherein the activation operation of the second secondary cell precedes the activation operation of the first secondary cell, wherein, when the first carrier and the second carrier have the predetermined association relationship, the reference signal on the carrier of the primary cell or the carrier of the activated second secondary cell is determined as the reference signal for determining the power control parameters; or, the first rule includes: based on the frequency position of each first carrier and the second carrier, determining the reference signal on the first carrier whose frequency is closest to the second carrier among the plurality of first carriers as the reference signal for determining the power control parameters.

[0046] Optionally, the transmit power is determined based on the power control parameters if the power control parameters determined based on information associated with the reference signal and the at least one piece of information satisfy a first condition; the method further includes: receiving uplink request information, wherein the uplink request information is used to request a reference signal to be configured on a second carrier if the power control parameters determined based on information associated with the reference signal and the at least one piece of information do not satisfy the first condition.

[0047] Optionally, the first condition includes: the difference between the power control parameters determined based on information associated with the reference signal and the at least one of the information and the power control parameters determined based on information associated with the reference signal on the second carrier is less than a threshold.

[0048] According to a third aspect of the present disclosure, a user equipment is provided, including: a transceiver, a processor coupled to the transceiver and configured to perform the method described above performed by the user equipment.

[0049] According to a fourth aspect of the present disclosure, a network side node is provided, comprising: a transceiver, a processor coupled to the transceiver and configured to perform the method described above performed by the network side node.

[0050] According to a fifth aspect of the present disclosure, a computer-readable storage medium is provided that stores instructions which, when executed by at least one processor, cause the at least one processor to perform any of the methods described above.

[0051] The technical solution provided by the embodiments of this disclosure allows the UE to receive a reference signal on a first carrier, determine power control parameters on a second carrier based on information associated with the reference signal and at least one piece of information associated with the first and second carriers, and determine the transmission power of at least one uplink physical channel or physical signal on the second carrier based on the power control parameters. Therefore, the UE does not necessarily need to receive the reference signal on the second carrier to determine the transmission power of at least one uplink physical channel or physical signal on the second carrier. This avoids unnecessary resource overhead caused by the UE being separately configured with reference signals on the first and second carriers and separately determining the transmission power of at least one uplink physical channel or physical signal on the corresponding carrier based on the reference signals on different carriers in carrier aggregation scenarios. Furthermore, it simplifies the power control process, thereby improving network transmission rate and user experience.

[0052] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0053] The accompanying drawings, which are incorporated in and form part of this specification, illustrate exemplary embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure, and are not intended to unduly limit this disclosure.

[0054] Figure 1 An example wireless network according to an embodiment of this disclosure is shown.

[0055] Figure 2 An example base station according to an embodiment of the present disclosure is shown.

[0056] Figure 3 An example user equipment according to an embodiment of the present disclosure is shown.

[0057] Figure 4This is a flowchart illustrating a method performed by a user equipment according to an embodiment of the present disclosure.

[0058] Figure 5 This is a schematic diagram illustrating an example of determining a road loss reference signal according to an exemplary embodiment of the present disclosure.

[0059] Figure 6 This is a schematic diagram illustrating an example of a user considering a first condition to determine a road loss reference signal according to an exemplary embodiment of the present disclosure.

[0060] Figure 7 This is a schematic diagram illustrating communication between a user equipment and a gNB according to an exemplary embodiment of the present disclosure.

[0061] Figure 8 This is a flowchart illustrating a method performed by a network-side node according to an embodiment of the present disclosure.

[0062] Figure 9 This is a block diagram illustrating a user equipment according to an embodiment of the present disclosure.

[0063] Figure 10 This is a block diagram illustrating a network-side node according to an embodiment of the present disclosure. Detailed Implementation

[0064] Before proceeding with the following detailed description, it may be advantageous to define certain words and phrases used throughout the patent literature. The term “connection” and its derivatives refer to any direct or indirect communication between two or more elements, regardless of whether those elements are physically in contact with each other. The terms “transmit,” “receive,” and “transmit,” and their derivatives encompass both direct and indirect communication. The terms “comprise” and “include,” and their derivatives mean inclusion without limitation. The term “or” is concurrent, meaning both and / or. The phrase “associated with,” and its derivatives mean including, being included in, interconnected with, containing, being contained within, connected to or connected with, coupled to or coupled with, able to communicate with, cooperate with, intertwine, juxtapose, proximate, bound to or bound with, having, possessing attributes, having a relationship with, or having a relationship with, etc. The term “controller” means any device, system, or part thereof that controls at least one operation. Such a controller may be implemented in hardware or in a combination of hardware and software and / or firmware. The functionality associated with any particular controller, whether local or remote, can be centralized or distributed. The phrase "at least one" when used to list items means that different combinations of one or more of the listed items can be used, and it is possible that only one item in the list is needed. For example, "at least one of A, B, and C" includes any of the following combinations: A, B, C; A and B; A and C; B and C; and only A, only B, and only C. Similarly, the term "set" means one or more. Therefore, a set of items can be a single item or a set of two or more items.

[0065] Furthermore, the various functions described below can be implemented or supported by one or more computer programs, each function being formed by computer-readable program code and embodied in a computer-readable medium. The terms "application" and "program" refer to one or more computer programs, software components, instruction sets, procedures, functions, objects, classes, instances, associated data, or portions thereof suitable for implementation in appropriate computer-readable program code. The phrase "computer-readable program code" includes any type of computer code, including source code, object code, and executable code. The phrase "computer-readable medium" includes any type of medium accessible by a computer, such as read-only memory (ROM), random access memory (RAM), hard disk drive, compact disc (CD), digital video disc (DVD), or any other type of storage. "Non-transitory" computer-readable media excludes wired, wireless, optical, or other communication links that transmit transient electrical or other signals. Non-transitory computer-readable media includes media in which data can be permanently stored and media such as rewritable optical discs or erasable memory devices in which data can be stored and later rewritten.

[0066] Definitions for certain other words and phrases are provided throughout this patent document. Those skilled in the art will understand that, in many, if not the most, instances, such definitions apply to both prior and future uses of the words and phrases defined in this way.

[0067] The figures and various embodiments included herein, used to illustrate the principles of this disclosure, are merely illustrative and should not be construed in any way as limiting the scope of this disclosure. Furthermore, those skilled in the art will understand that the principles of this disclosure can be implemented in any suitably arranged wireless communication system.

[0068] The following Figures 1 to 3 Various embodiments of this disclosure implemented in wireless communication systems are described. Figures 1 to 3 The description does not imply any physical or architectural limitations on the ways in which different embodiments can be implemented. Different embodiments of this disclosure can be implemented in any suitably arranged communication system.

[0069] Figure 1 An example wireless network according to an embodiment of this disclosure is shown. Figure 1 The embodiments of the wireless network shown are for illustrative purposes only. Other embodiments of the wireless network 100 may be used without departing from the scope of this disclosure.

[0070] like Figure 1As shown, the wireless network includes a base station (next generation nodeB, gNB or gNodeB) 101, gNB 102, and gNB 103. gNB 101 communicates with gNB 102 and gNB 103. gNB 101 also communicates with at least one network 130 such as the Internet, a proprietary Internet Protocol (IP) network, or other data networks.

[0071] gNB 102 provides wireless broadband access to network 130 to multiple first user equipments (UEs) within coverage area 120 of gNB 102. The multiple first UEs include UE 111, which may be located in a small business (SB); UE 112, which may be located in an enterprise (E); UE 113, which may be located in a WiFi hotspot (HS); UE 114, which may be located in a first residence (R1); UE 115, which may be located in a second residence (R2); and UE 116, which may be a mobile device (M) such as a cellular phone, wireless laptop, or wireless personal digital assistant (PDA). gNB 103 provides wireless broadband access to network 130 to multiple second UEs within coverage area 125 of gNB 103. The multiple second UEs include UE 115 and UE 116, and subscriber stations (SS, such as UEs) 117, 118, and 119. In some embodiments, one or more of gNBs 101-103 may communicate with each other and UEs 111-116 using existing wireless communication technologies, and one or more of UEs 111-119 may communicate directly with each other (e.g., UEs 117-119) using other existing or proposed wireless communication technologies.

[0072] Depending on the network type, the term "base station" or "BS" can refer to any component (or set of components) configured to provide wireless access to a network, such as a transmit point (TP), transmit-receive point (TRP), enhanced (or "evolved") base station (eNodeB or eNB), 5G base station (gNB), macro cell, femtocell, wireless fidelity (WiFi) access point (AP), or other wirelessly capable device. A base station can provide wireless access according to one or more wireless communication protocols, such as 3GPP 5G new radio (NR), Long Term Evolution (LTE), LTE-Advanced (LTE-A), high-speed packet access (HSPA), Wi-Fi 802.11a / b / g / n / ac, etc. For convenience, various names for base station type devices and functions may be used interchangeably in this patent document to refer to network infrastructure components that provide wireless access to remote terminals. Furthermore, depending on the network type, the term "User Equipment" (UE) can refer to any component such as a mobile station (MS), user station (SS), remote terminal, wireless terminal, receiving point, or user device. For convenience, various names for user equipment type devices and functions may be used interchangeably in this patent document to refer to remote wireless devices that wirelessly access the BS regardless of whether the UE is a mobile device (such as a mobile phone or smartphone) or is generally considered a fixed device (such as a desktop computer or vending machine).

[0073] The dashed lines indicate the approximate extent of coverage areas 120 and 125, which are shown as roughly circular for illustrative and explanatory purposes only. It should be clearly understood that coverage areas such as 120 and 125 associated with the gNB can have other shapes, including irregular shapes, depending on the configuration of the gNB and variations in the wireless environment associated with natural and man-made obstacles.

[0074] As described in more detail below, one or more of UEs 111-119 include circuitry, programming, or a combination thereof. In some embodiments, one or more of gNBs 101-103 include circuitry, programming, or a combination thereof.

[0075] although Figure 1 An example of a wireless network is shown, but more can be found on... Figure 1Various modifications can be made. For example, wireless network 100 can include any number of gNBs and any number of UEs in any suitable arrangement. Furthermore, gNB 101 can communicate directly with any number of UEs and provide those UEs with wireless broadband access to network 130. Similarly, each gNB 102-103 can communicate directly with network 130 and provide UEs with direct wireless broadband access to network 130. Additionally, gNBs 101, 102, and / or 103 can provide access to other or additional external networks, such as external telephone networks or other types of data networks.

[0076] Figure 2 An example base station according to an embodiment of the present disclosure is shown. Figure 2 The embodiment of gNB 102 shown is for illustrative purposes only, and Figure 1 gNBs 101 and 103 can have the same or similar configurations. However, gNBs come in a variety of configurations, and Figure 2 This disclosure is not intended to limit the scope to any particular implementation of gNB.

[0077] like Figure 2 As shown, gNB 102 includes multiple antennas 200a-200n, multiple radio frequency (RF) transceivers 201a-201n, transmit (TX) processing circuitry 203, and receive (RX) processing circuitry 204. gNB 102 also includes a controller / processor 205, a memory 206, and a backhaul or network interface 207.

[0078] RF transceivers 201a-201n receive incoming RF signals from antennas 200a-200n, such as signals transmitted by the UE in network 100. RF transceivers 201a-201n down-convert the incoming RF signals to generate intermediate frequency (IF) or baseband signals. The IF or baseband signal is sent to RX processing circuitry 204, which generates a processed baseband signal by filtering, decoding, and / or digitizing the baseband or IF signal. RX processing circuitry 204 sends the processed baseband signal to controller / processor 205 for further processing.

[0079] The TX processing circuit 203 receives analog or digital data (such as voice data, web data, email, or interactive video game data) from the controller / processor 205. The TX processing circuit 203 encodes, multiplexes, and / or digitizes the outgoing baseband data to generate a processed baseband or IF signal. RF transceivers 201a-201n receive the processed baseband or IF signal from the TX processing circuit 203 and up-convert the baseband or IF signal into an RF signal transmitted via antennas 201a-201n.

[0080] The controller / processor 205 may include one or more processors or other processing devices that control the overall operation of the gNB 102. For example, the controller / processor 205 may control the reception of forward channel signals and the transmission of reverse channel signals by the RF transceivers 201a-201n, the RX processing circuit 204, and the TX processing circuit 203, according to known principles. The controller / processor 205 may also support additional functions, such as more advanced wireless communication functions.

[0081] For example, the controller / processor 205 can support beamforming or directional routing operations, where signals emitted from multiple antennas 200a-200n are weighted differently to effectively redirect the emitted signals in the desired direction. Any of a variety of other functions can be supported in the gNB 102 via the controller / processor 205.

[0082] The controller / processor 205 is also capable of executing programs and other processes located in memory 206, such as the operating system (OS). The controller / processor 205 can move data into or out of memory 206 as needed by the executing process.

[0083] The controller / processor 205 is also connected to a backhaul or network interface 207. The backhaul or network interface 207 allows the gNB 102 to communicate with other devices or systems via a backhaul connection or over a network. Interface 207 can support communication via any suitable wired or wireless connection(s). For example, when the gNB 102 is implemented as part of a cellular communication system (such as a cellular communication system supporting 5G, LTE, or LTE-A), interface 207 can allow the gNB 102 to communicate with other gNBs via a wired or wireless backhaul connection. When the gNB 102 is implemented as an access point, interface 207 can allow the gNB 102 to communicate via a wired or wireless local area network or via a wired or wireless connection to a larger network (such as the Internet). Interface 207 includes any suitable structure that supports communication via wired or wireless connections such as Ethernet or RF transceivers.

[0084] Memory 206 is connected to controller / processor 205. A portion of memory 206 may include random access memory (RAM), and another portion of memory 206 may include flash memory or other read-only memory (ROM).

[0085] although Figure 2 An example of gNB 102 is shown, but it is possible to see more. Figure 2 Various changes can be made. For example, gNB 102 can include any number of Figure 2 Each component is shown in the diagram. As a specific example, an access point may include multiple interfaces 207, and the controller / processor 205 may support routing functionality to route data between different network addresses. As another specific example, although shown as a single instance of TX processing circuitry 203 and a single instance of RX processing circuitry 204, gNB102 may include multiple instances of each (such as one per RF transceiver). For example, Figure 2 The various components can be combined, further subdivided, or omitted, and additional components can be added as needed.

[0086] Figure 3 An example user equipment according to an embodiment of the present disclosure is shown. Figure 3 The embodiment of UE 116 shown is for illustrative purposes only, and Figure 1 UEs 111-115 and 117-119 can have the same or similar configurations. However, UEs appear in multiple configurations, and Figure 3 This disclosure is not intended to limit the scope to any particular implementation of the UE.

[0087] like Figure 3 As shown, UE 116 includes an antenna 301, a radio frequency (RF) transceiver 302, a TX processing circuit 303, a microphone 304, and a receive (RX) processing circuit 305. UE 116 also includes a speaker 306, a controller or processor 307, an input / output (I / O) interface (IF) 308, an input device 309, a touchscreen display 310, and memory 311. Memory 311 includes an OS 312 and one or more applications 313.

[0088] RF transceiver 302 receives incoming RF signals transmitted by gNB of network 100 from antenna 301. RF transceiver 302 down-converts the incoming RF signals to generate an IF or baseband signal. The IF or baseband signal is sent to RX processing circuitry 305, which generates a processed baseband signal by filtering, decoding, and / or digitizing the baseband or IF signal. RX processing circuitry 305 sends the processed baseband signal to speaker 306 (e.g., for voice data) or processor 307 for further processing (e.g., for web browsing data).

[0089] TX processing circuit 303 receives analog or digital voice data from microphone 304 or other outgoing baseband data (such as web data, email, or interactive video game data) from processor 307. TX processing circuit 303 encodes, multiplexes, and / or digitizes the outgoing baseband data to generate a processed baseband or IF signal. RF transceiver 302 receives the processed baseband or IF signal from TX processing circuit 303 and up-converts the baseband or IF signal into an RF signal transmitted via antenna 301.

[0090] Processor 307 may include one or more processors or other processing devices and executes OS 312 stored in memory 311 to control the overall operation of UE 116. For example, processor 307 may control the reception of forward channel signals and the transmission of reverse channel signals by RF transceiver 302, RX processing circuitry 305, and TX processing circuitry 303 according to known principles. In some embodiments, processor 307 includes at least one microprocessor or microcontroller.

[0091] Processor 307 is also capable of executing other processes and programs located in memory 311, such as processes for CSI reporting on the uplink channel. Processor 307 can move data into or out of memory 311 as needed for executing processes. In some embodiments, processor 307 is configured to execute application 313 based on OS 312 or in response to signals received from gNB or operator. Processor 307 is also coupled to I / O interface 308, which provides UE 116 with the ability to connect to other devices such as laptops and laptops. I / O interface 308 is the communication path between these accessories and processor 307.

[0092] The processor 307 is also connected to the touchscreen display 310. The user of the UE 116 can use the touchscreen display 310 to input data into the UE 116. The touchscreen display 310 can be a liquid crystal display, a light-emitting diode display, or other display capable of rendering text and / or at least limited graphics such as those from a website.

[0093] Memory 311 is connected to processor 307. A portion of memory 311 may include RAM, and another portion of memory 311 may include flash memory or other ROM.

[0094] although Figure 3 An example of UE 116 is shown, but it is possible to modify it. Figure 3 Make various changes. For example, Figure 3 The various components can be combined, further subdivided, or omitted, and additional components can be added as needed. As a specific example, processor 307 can be divided into multiple processors, such as one or more central processing units (CPUs) and one or more graphics processing units (GPUs). Moreover, although... Figure 3 The UE 116 is shown configured as a mobile phone or smartphone, but the UE can be configured to operate as other types of mobile or fixed devices.

[0095] With the rapid development of mobile communication technology, higher demands are being placed on network transmission rates. However, considering that the allocated wireless communication spectrum resources for any country, region, or operator are limited, how to fully utilize these limited resources to continuously improve network transmission rates is a common problem. For example, carrier aggregation (CA) technology is a technique that can significantly improve network transmission efficiency. For UEs (User Equipment) that support carrier aggregation, network-side nodes (e.g., base stations, gNBs, IABs) can allocate multiple carriers, allowing them to simultaneously connect to cells corresponding to different carriers (the same cell or different cells, e.g., the same serving cell or different serving cells), thereby significantly improving user experience and network transmission speed.

[0096] In CA scenarios, to achieve uplink transmission for the same UE on different carriers (or carrier cells) and perform effective uplink power control, the UE needs to determine the transmission power for uplink transmission on different carriers (or carrier cells). If the UE is configured with a reference signal for each carrier (or carrier cell) separately, and the transmission power for uplink transmission on each carrier is determined separately based on the reference signal on each carrier, it will increase resource overhead. Furthermore, to determine the transmission power for uplink transmission on each carrier separately based on the reference signal on each carrier, the UE needs to receive the reference signal on each carrier separately and perform time-domain filtering and other processing on the received reference signal, inevitably increasing the complexity of the UE-side power control process.

[0097] This disclosure proposes a method executed by a user equipment (UE) that receives a reference signal on a first carrier, determines power control parameters associated with a second carrier based on information associated with the reference signal and at least one piece of information associated with the first and second carriers, and determines the transmission power of at least one uplink physical channel or physical signal on the second carrier based on the power control parameters. According to the method of this disclosure, since the UE does not necessarily need to receive the reference signal on the second carrier to determine the transmission power of at least one uplink physical channel or physical signal on the second carrier, unnecessary resource overhead caused by the UE being separately configured with reference signals on the first and second carriers and separately determining the transmission power of at least one uplink physical channel or physical signal on the corresponding carrier in carrier aggregation scenarios can be avoided. Furthermore, the power control process is simplified, thereby improving network transmission rate and user experience. For example, the UE can receive only the reference signal on the first carrier. Based on the reference signal on the first carrier, not only can the transmission power of the uplink physical channel or physical signal on the first carrier be determined, but also the transmission power of the uplink physical channel or physical signal on the second carrier can be determined. Thus, the base station does not need to transmit the reference signal on the second carrier, reducing resource overhead. At the same time, the UE only needs to be configured to receive the reference signal on the first carrier and process the reference signal on the first carrier, thereby reducing the signaling process and simplifying the processing flow on the UE side.

[0098] Figure 4 This is a flowchart illustrating a method performed by a user equipment according to an embodiment of the present disclosure.

[0099] Reference Figure 4In step S410, a reference signal on the first carrier is received. In step S420, power control parameters associated with the second carrier are determined based on information associated with the reference signal and at least one piece of information associated with the first and second carriers. In step S430, the transmission power of at least one uplink physical channel or physical signal on the second carrier is determined based on the power control parameters.

[0100] Below, we will describe the content involved in the above steps with examples.

[0101] In some examples, in step S410, the reference signal on the first carrier can be a downlink physical signal such as an SSB (Synchronization Signal Block), CSI-RS (Channel State Information Reference Signal), or DMRS (Demodulation Reference Signal). For example, the DMRS is associated with a downlink physical channel (e.g., PDSCH (Physical Downlink Shared Channel), PDCCH (Physical Downlink Control Channel), PBCH (Physical Broadcast Channel), etc.) (e.g., the DMRS is used for demodulating the downlink physical channel). The reference signal can be associated with the power control of at least one uplink physical channel or physical signal on the second carrier. For example, the reference signal is a reference signal for estimating path loss for at least one uplink physical channel or physical signal on the second carrier. For example, the path loss can be calculated based on the reference signal on the first carrier, and this path loss can be used to determine the transmission power of at least one uplink physical channel or physical signal on the second carrier. At least one uplink physical channel or physical signal on the second carrier may be an uplink physical signal such as PUSCH (Physical Uplink Shared Channel), PRACH (Physical Random Access Channel), or PUCCH (Physical Uplink Control Channel); or an uplink reference signal such as SRS (Sounding Reference Signal) or DMRS (Demodulation Reference Signal). For example, the DMRS is associated with an uplink physical channel (e.g., PUSCH, PUCCH) (e.g., the DMRS is used for demodulation of the uplink physical channel).

[0102] In some examples, the first carrier and the second carrier can be different carriers of the same serving cell, or carriers corresponding to different serving cells. For example, the first carrier is a carrier of the first serving cell, and the second carrier is a carrier of the second serving cell. When the first carrier and the second carrier correspond to different serving cells, in all examples of this disclosure, "carrier" can be equivalently replaced by "serving cell" or "cell," "first carrier" can be equivalently replaced by "first serving cell," and "second carrier" can be equivalently replaced by "second serving cell." In other examples, the first serving cell is the UE's primary cell (PCell), and the second serving cell is the UE's secondary cell (SCell); or, when both the first serving cell and the UE's second serving cell are secondary cells, the first serving cell is activated before the second serving cell is activated. This design is based on the consideration that, in a CA scenario, the measurement results can only be multiplexed to the subsequently activated serving cell after the UE has received the reference signal and obtained the relevant measurements in the primary cell or the first activated secondary cell.

[0103] According to an embodiment, the power control parameters in step S420 may include at least one of the following: target received power corresponding to the second carrier or target received power offset corresponding to the second carrier; path loss corresponding to the second carrier or path loss offset corresponding to the second carrier; and path loss compensation factor corresponding to the second carrier.

[0104] In the example scenarios according to this disclosure, network-side nodes (e.g., base stations, gNBs, IABs, etc.) can allocate multiple carriers (e.g., a first carrier and a second carrier) to the UE, allowing it to simultaneously connect to serving cells corresponding to different carriers, thereby significantly improving user speed experience and network transmission rate. For example, the first carrier and the second carrier can be carriers corresponding to different serving cells. Typically, in CA scenarios, to achieve uplink transmission of the same UE on different serving cells and to perform effective uplink power control, the UE needs to obtain the path loss in different serving cells, and then determine the transmission power of uplink transmission on different carriers based on the obtained path loss of different serving cells. Path loss is the loss incurred by the signal propagating in space after it is transmitted, reflecting the change in the average received signal power in a macroscopic and statistical sense, and is a large-scale characteristic of the propagation channel. Typically, path loss is mainly determined by the distance between the transmitting antenna and the receiving antenna (referred to as the transmit / receive distance) and is affected by factors such as signal frequency. Considering the different carrier frequencies of different serving cells, and the fact that different antennas can be used for different carriers (for example, when the carrier frequencies of different serving cells differ significantly, such as the first serving cell carrier being located in the millimeter-wave band FR2 and the second serving cell carrier being located in the mid-frequency band FR3, the difference in carrier frequency positions is too large. Due to the bandwidth limitations of the radio frequency components and the difference in antenna apertures between different frequency bands, the same device cannot support both carriers simultaneously with the same set of antenna components, thus requiring different antennas), which can lead to different transmission and reception distances, the UE is typically configured with a reference signal for estimating path loss on each serving cell (hereinafter, the reference signal used for estimating path loss will be called the "path loss reference signal"), and the path loss on each serving cell is estimated separately based on the path loss reference signal on each serving cell. The path loss reference signal transmitted on each serving cell becomes an unavoidable resource overhead. At the same time, in order to calculate the path loss of each serving cell, the UE needs to receive the path loss reference signal and perform time-domain filtering on the received signal, which inevitably increases the complexity of the UE-side processing flow. Although the radio frequency antennas corresponding to carriers of different serving cells can be different in CA scenarios, in order to reduce the overall antenna size on the base station side and make equipment installation easier, different antennas are usually placed in close proximity. In other words, in CA scenarios, even if the carrier frequency positions of different serving cells are significantly different (e.g., the primary cell carrier is in the mid-frequency band (FR3) while the secondary cell carrier is in the high-frequency band (FR2); or, the primary cell carrier is in the low-frequency band (FR1) while the secondary cell carrier is in the mid-frequency band (FR3), etc.), the antennas corresponding to carriers of different serving cells can have the characteristic of co-location. It can also be considered that the transmission and reception distances of the two serving cells / carriers are approximately the same. Therefore, the path loss of the first carrier (e.g., the carrier of the first serving cell) and the path loss of the second carrier (e.g., the carrier of the second serving cell) can be correlated.In the example scenario disclosed herein, the UE can determine the path loss on the first carrier and the second carrier based solely on the path loss reference signal on the first carrier, and then determine the uplink transmission power on the first carrier and the second carrier based on the path loss, thereby eliminating the need to transmit the path loss reference signal on the second carrier, reducing system overhead. At the same time, the UE only needs to be configured to receive the path loss reference signal on the first carrier, which can reduce signaling procedures and simplify the UE-side processing procedures.

[0105] According to embodiments, the information associated with the reference signal may include at least one of the following: information related to the carrier on which the reference signal is transmitted; and measurements based on the reference signal. The carrier on which the reference signal is transmitted refers to the carrier used by the network-side node to transmit the reference signal. In some examples, the information related to the carrier on which the reference signal is transmitted may include whether the carrier on which the reference signal is transmitted is a second carrier. In some examples, measurements based on the reference signal may include at least one of the following: the received power of the reference signal, the received power of the filtered reference signal, and a path loss determined based on the reference signal. For example, the received power of the filtered reference signal may be the received power of the reference signal after higher-layer filtering (such as an L3 filter). For example, the path loss determined based on the reference signal may be = the transmitted power of the reference signal – the received power based on the reference signal.

[0106] In some examples, if "information associated with the reference signal" includes information related to the carrier on which the reference signal is transmitted, then the power control parameters on the second carrier determined by the UE based on information such as "whether the carrier on which the reference signal is transmitted is a second carrier" can be path loss compensation factors for at least one uplink physical channel or physical signal on the second carrier. For example, the transmit power of the PUSCH can be determined based on the following formula: [dBm], where, To serve the community c carrier f Upward BWP b The corresponding path loss compensation factor, To serve the community carrier BWP b on, based on index The path loss determined by the path loss reference signal. To determine the target received power based on higher-level configurations (e.g., RRC configuration), This is the bandwidth allocated for PUSCH transmission; It is the subcarrier spacing configuration; These are power adjustment values ​​related to encoding and modulation; This is a power adjustment value related to the transmission power control command. For example, when the carrier in which the reference signal is transmitted is the second carrier, the path loss compensation factor (alpha, such as...) can be determined. The path loss compensation factor (alpha) can be determined if the reference signal is transmitted on a carrier that is not the second carrier. The second value is alpha, where both the first and second values ​​of the path loss compensation factor can be associated with the same set (e.g., the same index) of power control-related configuration parameters (e.g., the same set of power control-related configuration parameters includes a path loss compensation factor (alpha, such as alpha). The first and second values ​​of the path loss compensation factor (the path loss compensation factor is determined by the reference signal transmitted on the second carrier). The advantage of this design is that calculating the path loss based on the reference signal transmitted on the second carrier is more accurate; while calculating the path loss based on the reference signal transmitted on other carriers is less accurate. Different path loss compensation factors should be used. For example, when the reference signal is transmitted on the second carrier, the UE calculates the path loss based on a smaller path loss compensation factor; when the reference signal is transmitted on the first carrier (not the second carrier), the UE calculates the path loss based on a larger path loss compensation factor. With a more accurate determined path loss, the transmission power determined based on the path loss will also be more accurate. According to an embodiment, the first value is less than the second value; for example, the first value can be equal to 0.

[0107] In the above example of determining the transmission power, the power control parameters used to determine the transmission power may include power control parameters determined solely based on information associated with a reference signal on the first carrier, such as path loss determined based on the reference signal on the first carrier and path loss compensation factor determined based on information associated with the carrier to which the reference signal is transmitted. However, power control parameters determined solely based on information associated with the reference signal on the first carrier may be inaccurate. In order to determine the power control parameters more accurately, according to embodiments of this disclosure, the power control parameters determined based on information associated with the reference signal can be corrected.

[0108] As described above, in step S420, the power control parameters are determined based on information associated with the reference signal and at least one piece of information associated with the first carrier and the second carrier. For example, the power control parameters can be determined based on information associated with the reference signal, and then the power control parameters determined based on the information associated with the reference signal can be corrected based on at least one piece of information associated with the first carrier and the second carrier to determine more accurate power control parameters. For example, the information associated with the reference signal can be path loss determined based on the reference signal, and the path loss determined based on the reference signal can be corrected or offset based on the at least one piece of information to determine a more accurate path loss as one of the power control parameters.

[0109] According to an embodiment, "at least one piece of information related to the first carrier and the second carrier" may include at least one of the following: a first offset value related to the frequency of the first carrier and the frequency of the second carrier; a second offset value related to the radio frequency parameters of the downlink transmit antenna or beam of the first carrier and the second carrier, and / or the network-side node; and a third offset value related to the radio frequency parameters of the UE for the first carrier and the second carrier.

[0110] As mentioned above, in step S420, power control parameters associated with the second carrier can be determined based on information associated with the reference signal and at least one piece of information associated with the first and second carriers. Optionally, in some examples, the method may further include: determining a first path loss based on the reference signal. In some examples, the power control parameters associated with the second carrier include: a second path loss, which is determined based on the first path loss and the at least one piece of information. In some examples, the second path loss is determined by: determining a path loss offset corresponding to the second carrier based on the at least one piece of information; and determining the second path loss based on the first path loss and the path loss offset. For example, the at least one piece of information can be used as the path loss offset, or the at least one piece of information can be further calculated to determine the path loss offset. Optionally, in some examples, the transmit power of at least one uplink physical channel or physical signal on the second carrier is determined based on the second path loss. For example, the transmit power is determined based on the second path loss and the target receive power of uplink transmission determined according to the higher-layer configuration. Optionally, in some examples, based on the at least one piece of information associated with the first carrier and the second carrier, in addition to correcting the path loss, the target received power can also be corrected.

[0111] Optionally, in some examples, the method may further include: determining a first path loss based on the reference signal; and determining a first target received power for the at least one uplink physical channel or physical signal according to a higher-layer configuration. In this case, in some examples, the power control parameters associated with the second carrier include: the first path loss, and a second target received power for the at least one uplink physical channel or physical signal on the second carrier, wherein the second target received power is determined based on the first target received power and the at least one piece of information. Optionally, in some examples, the transmit power of the at least one uplink physical channel or physical signal on the second carrier is determined based on the first path loss and the second target received power. In some examples, the second target received power is determined by: determining a target received power offset corresponding to the second carrier based on the at least one piece of information; and determining the second target received power based on the first target received power and the target received power offset.

[0112] As mentioned above, the at least one piece of information may include at least one of the following: a first offset value related to the frequency of the first carrier and the frequency of the second carrier; a second offset value related to the radio frequency parameters of the downlink transmit antenna or beam of the first carrier and the second carrier, and / or the network-side node; and a third offset value related to the radio frequency parameters of the UE for the first carrier and the second carrier.

[0113] In some examples, the first offset value includes an offset value determined based on the ratio of the reference frequency of the second carrier to the reference frequency of the first carrier. For example, the reference frequency may be the carrier center frequency, the highest carrier frequency, the lowest carrier frequency, or a configured reference frequency value within the carrier frequency range (e.g., the associated frequency of the BWP within that carrier). For example, the first offset value may be... ,in, This is the reference frequency for the second carrier. This is the reference frequency for the first carrier wave; Logarithmic function; road loss coefficient A typical value of 20 is determined based on the free-space path loss theory formula. The design approach calculates the adjustment value of the power control parameters based on the reference frequencies of the first and second carriers. The theoretical basis is the free-space path loss principle formula: assuming a constant transmit and receive distance, the difference in path loss caused by the different frequencies of the first carrier (for path loss reference signal transmission) and the second carrier (for uplink transmission) can be compensated for by an offset value related to this frequency ratio. In some examples, the path loss coefficient... For configuration values, the UE can obtain them through higher-level signaling (e.g., the RRC configuration signaling obtained by the UE contains instructions). The value is obtained from the IE (information element), or the MAC header obtained by the UE contains information used to indicate... The value of the CE (control element). The UE is based on the ratio of the reference frequency of the second carrier to the reference frequency of the first carrier, and the configured... Calculate the first offset value, for example, according to Calculate the first offset value. This design allows the network side to configure an appropriate path loss coefficient based on the actual deployment scenario (e.g., in suburban deployments). It can be configured to 20, but is not limited to this; when deployed in densely populated urban areas. It can be configured to 27~35 (but is not limited to this), thereby improving the accuracy of the first offset value and the accuracy of subsequent path loss correction based on the first offset value. In some examples, the first offset value, determined based on the ratio of the reference frequency of the second carrier to the reference frequency of the first carrier, is an offset of the path loss, and the transmission power of at least one uplink physical channel or physical signal on the second carrier is determined based on the offset path loss. Taking PUSCH as an example, the UE calculates the path loss based on the reference signal transmitted on the first carrier and according to the first carrier reference frequency. Second carrier reference frequency Related offset values The path loss can be corrected; for example, the modified path loss could be... ,in, To serve the community carrier BWP b on (second carrier), based on index The path loss calculated from the path loss reference signal (e.g., ,in, The transmission power of the reference signal is provided by higher-layer signaling. It is the received power of the reference signal after higher-layer filtering, which is determined by the UE based on the index. (Calculated from reference signals and related high-level configurations); and, the index is... The path reference signal is located on a first carrier that is different from the second carrier (e.g., in a different serving cell, or on a different carrier within the same serving cell, etc.). As an example, the UE can determine the corresponding PUSCH transmission time according to the following formula. Using index as The parameter set configuration and index are as follows PUSCH transmit power during PUSCH power control adjustment state : [dBm] or, [dBm] in, Maximum transmission power; The target received power is determined based on the higher-level configuration (e.g., RRC configuration); This is the bandwidth allocated for PUSCH transmission; It is the subcarrier spacing configuration; It is a path loss compensation factor determined based on higher-level configurations (e.g., RRC configurations); These are power adjustment values ​​related to encoding and modulation; It is the power adjustment value related to sending power control commands.

[0114] Optionally, in another embodiment, the first offset value can also be an offset from the target received power. Taking the determination of the PUSCH power control parameters on the second carrier as an example, when the carrier on which the reference signal used by the UE to calculate the path loss is transmitted is not the second carrier (the first carrier), the UE uses the reference frequency of the first carrier. Reference frequency of the second carrier Related offset values (in, Logarithmic function; road loss coefficient The typical value is 20 (determined according to the free space path loss theory formula), and the target received power is adjusted accordingly, such as the adjusted target received power. for ,in, The serving cell determined by the UE based on the higher-layer configuration. carrier The target received power of the PUSCH on BWP b (second carrier). The UE can determine the corresponding PUSCH transmission time according to the following formula. Using index as The parameter set configuration and index are as follows PUSCH transmit power during PUSCH power control adjustment state : [dBm] in, Maximum transmission power; This is the bandwidth allocated for PUSCH transmission; It is the subcarrier spacing configuration; It is the path loss compensation factor determined based on the RRC configuration; These are power adjustment values ​​related to encoding and modulation; It is a power adjustment value related to sending power control commands; For index-based The path loss calculated from the path loss reference signal (e.g., ,in, Provided by high-level signaling, By UE based on the index (obtained from the reference signal and related high-level configuration calculations), and, the index is The path reference signal is located on a first carrier that is different from the second carrier (e.g., in a different serving cell, or in a different carrier within the same serving cell).

[0115] In some examples, the second offset value is obtained based on higher-layer configuration. For example, the UE may obtain a second offset value related to the downlink transmit antennas or beams of the first and second carriers, and / or the radio frequency parameters of the network-side nodes (e.g., related to the downlink transmit antenna gain difference or beam gain difference between the first and second carriers, and related to radio frequency channel calibration (e.g., the difference in radio frequency channel coefficients between the first and second carriers, where the radio frequency channel coefficients may include insertion loss, radio frequency channel gain, etc.) based on higher-layer configuration (e.g., RRC configuration, MAC CE configuration, etc.), and adjust the calculated path loss based on the second offset value, wherein the path loss is for at least one uplink physical channel / physical signal on the second carrier and is calculated based on a reference signal transmitted on the first carrier. Optionally, the second offset value may not be configured, or may be configured to 0dB (i.e., not adjusted). This design considers that different carriers (serving cells) may have different antenna apertures or beam directions (for example, the first carrier and the second carrier are located in the mid-frequency band of 7GHz~15GHz and the low-frequency band below 7GHz, respectively. The coverage requirements of the first carrier and the second carrier are different, corresponding to different antenna apertures, that is, different antenna or beam gains when the beam directions are the same; at the same time, there can be a small deviation in the beam directions of the first carrier and the second carrier, which also leads to different antenna or beam gains). Therefore, when calculating the path loss of the second carrier based on the reference signal on the first carrier, a fixed antenna or beam gain deviation is generated. This deviation is determined by the antenna or beam design of the network-side node (e.g., the base station) and can be indicated to the UE by the network-side node through signaling. Taking PUSCH as an example, when the UE calculates the path loss based on the reference signal transmitted on the first carrier, and this path loss is used for uplink power control on the second carrier, it can use a second offset value configured by higher layers that is related to the downlink transmit antenna or beam of the first carrier and the second carrier, and / or the RF parameters of the network-side node (e.g., related to RF channel calibration). Correcting the path loss, for example, ,in, For use in serving the community carrier Power control of BWP b on (second carrier), based on index. The path loss calculated from the path loss reference signal (e.g., ,in, Provided by high-level signaling, By UE based on the index (Calculated from reference signals and related high-level configurations); and, the index is... The path reference signal is located on a first carrier that is different from the second carrier (e.g., in a different serving cell, or on a different carrier within the same serving cell). For example, the UE can determine the corresponding PUSCH transmission time according to the following formula. Using index as The parameter set configuration and index are as follows PUSCH transmit power during PUSCH power control adjustment state : [dBm] or, [dBm] in, Maximum transmission power; The target power to be received is determined according to the RRC configuration; This is the bandwidth allocated for PUSCH transmission; It is the subcarrier spacing configuration; It is the path loss compensation factor determined based on the RRC configuration; These are power adjustment values ​​related to encoding and modulation; It is the power adjustment value related to sending power control commands.

[0116] Optionally, in another implementation, the UE can obtain a second offset value related to the downlink transmit antennas or beams of the first and second carriers, and / or the radio frequency parameters of the network-side nodes (e.g., related to radio frequency channel calibration), based on higher-layer configurations (e.g., RRC configuration, MAC CE configuration, etc.), and offset the target received power according to the second offset value. Still taking the determination of the PUSCH power control parameters on the second carrier as an example, when the carrier on which the reference signal used by the UE to calculate path loss is transmitted is not the second carrier (the first carrier), the UE uses the second offset value related to the configured antenna or beam. Adjust the target received power, such as the adjusted target received power. for ,in, The serving cell determined by the UE based on the higher-layer configuration. carrier The target received power of the PUSCH on BWP b (second carrier). For example, the UE can determine the corresponding PUSCH transmission time according to the following formula. Using index as The parameter set configuration and index are as follows PUSCH transmit power during PUSCH power control adjustment state : [dBm] in, Maximum transmission power; This is the bandwidth allocated for PUSCH transmission; It is the subcarrier spacing configuration; It is the path loss compensation factor determined based on the RRC configuration; These are power adjustment values ​​related to encoding and modulation; It is a power adjustment value related to sending power control commands; For index-based The path loss calculated from the path loss reference signal (e.g., ,in, Provided by high-level signaling, By UE based on the index (obtained from the reference signal and related high-level configuration calculations), and, the index is The path reference signal is located on a first carrier that is different from the second carrier (e.g., in a different serving cell, or in a different carrier within the same serving cell).

[0117] In some examples, the third offset value includes at least one of the following: an instantaneous difference between the RF parameters for the first carrier and the RF parameters for the second carrier, the mean of the instantaneous difference over a period of time, or the difference between the mean over a first time period and the mean over a second time period, but is not limited thereto. For example, in some examples, the third offset value may be the difference between the RF channel correlation coefficient for the second carrier and the RF channel correlation coefficient for the first carrier (or, the mean of the differences, the difference between the means), wherein the RF channel correlation coefficient is the RF parameters (such as insertion loss, etc.) of the UE on a certain carrier's receive link and / or transmit link. This design takes into account that when the frequency bands of the first carrier and the second carrier are significantly different (e.g., the first carrier and the second carrier are located in the 7GHz~15GHz mid-frequency band and the low-frequency band below 7GHz, respectively), the UE will use different RF links to receive / transmit signals on the first carrier and the second carrier respectively. Different RF links have different RF parameters, which will be taken into account in the path loss estimation. If the path loss calculated based on the reference signal on the first carrier can compensate for the difference in the correlation coefficients of the radio frequency channels of the two different carriers, it can more accurately reflect the true path loss on the second carrier.

[0118] In some examples, the UE obtains the third offset value by obtaining and pre-storing it based on the radio frequency calibration of the first carrier and the second carrier. For example, the UE connects the radio frequency channels of the first carrier and the second carrier through a conduction port (e.g., a link interface) to obtain the instantaneous difference of the correlation coefficients of the radio frequency channels of the two carriers, or averages the instantaneous differences over a period of time to obtain the mean of the difference; or, the UE obtains the radio frequency channel coefficients of the first carrier and the second carrier respectively (e.g., the radio frequency channel coefficient of the first carrier / second carrier is the difference between the radio frequency channel coefficients of the first carrier / second carrier and the same reference carrier), calculates the instantaneous difference of the correlation coefficients of the radio frequency channels of the first carrier and the second carrier, or averages the instantaneous differences over a period of time to obtain the mean of the difference. Based on the UE's RF calibration capabilities (e.g., whether the UE supports obtaining the RF channel correlation coefficient difference between the first and second carriers; or whether the RF channel coefficient difference between the first and second carriers has been calibrated and compensated; or, for example, whether the UE can obtain the carrier combination of the RF channel coefficient difference), the UE determines whether it supports the following operation: the path loss associated with the first carrier (i.e., the path loss calculated based on the reference signal on the first carrier, the same meaning throughout) is used to determine the power control parameters of at least one uplink physical channel / physical signal on the second carrier; and, when the UE supports this operation (e.g., when the UE supports the RF calibration capability to obtain the RF channel correlation coefficient difference between the first and second carriers), the UE performs relevant RF parameter offset compensation for the path loss associated with the first carrier or the target received power of the uplink physical channel / physical signal on the second carrier. Taking the PUSCH on the second carrier as an example, for instance, the path loss after the UE performs RF parameter offset compensation is... ,in, To serve the community carrier BWP b on (second carrier), based on index The path loss calculated from the path loss reference signal (e.g., ,in, Provided by high-level signaling, By UE based on the index (Calculated from reference signals and related high-level configurations); and, the index is... The path reference signal is located on a first carrier that is different from the second carrier (e.g., in a different serving cell, or in a different carrier within the same serving cell, etc.). The difference between the correlation coefficient of the UE's radio frequency channel for the second carrier and the correlation coefficient of the UE's radio frequency channel for the first carrier / the mean of the difference / the difference of the mean.

[0119] For example, the UE can determine the corresponding PUSCH transmission time according to the following formula. Using index as The parameter set configuration and index are as follows PUSCH transmit power during PUSCH power control adjustment state : [dBm] or, [dBm] in, Maximum transmission power; The target received power is determined according to the RRC configuration; This is the bandwidth allocated for PUSCH transmission; It is the subcarrier spacing configuration; It is the path loss compensation factor determined based on the RRC configuration; These are power adjustment values ​​related to encoding and modulation; It is the power adjustment value related to sending power control commands.

[0120] Optionally, in another implementation, the third offset value is the difference in the radio frequency channel correlation coefficient between the higher frequency (e.g., carrier frequency, center frequency) and the lower frequency of a pair of carriers (e.g., the first carrier and the second carrier). (Alternatively, it can also be the difference in the radio frequency channel correlation coefficient between the lower frequency and the higher frequency of a pair of carriers). The path loss of the UE after radio frequency parameter offset compensation is... ,in, To serve the community carrier BWP b on (second carrier), based on index The path loss calculated from the path loss reference signal (e.g., ,in, Provided by high-level signaling, By UE based on the index (Calculated from reference signals and related high-level configurations); and, the index is... The path reference signal is located on a first carrier that is different from the second carrier (e.g., in a different serving cell, or in a different carrier within the same serving cell, etc.). This is the difference / mean of the RF channel correlation coefficient for the UE between the first and second carriers (for the higher (or lower) frequency carrier), and the difference between the UE's RF channel correlation coefficient for the lower (or higher) frequency carrier between the first and second carriers. The UE determines the sign for RF parameter offset compensation based on a comparison of the second carrier frequency and the first carrier frequency: for example, when the second carrier frequency is higher (or lower) than the first carrier frequency, the path loss after RF parameter offset compensation is... Conversely, the path loss after UE performs RF parameter offset compensation is: This method eliminates the need for the UE to store two offset values ​​with the same absolute value but different signs, greatly saving storage space for the UE's third offset value.

[0121] For example, the UE can determine the corresponding PUSCH transmission time according to the following formula. Using index as The parameter set configuration and index are as follows PUSCH transmit power during PUSCH power control adjustment state : [dBm] or, [dBm] in, Maximum transmission power; The target received power is determined according to the RRC configuration; This is the bandwidth allocated for PUSCH transmission; It is the subcarrier spacing configuration; It is the path loss compensation factor determined based on the RRC configuration; These are power adjustment values ​​related to encoding and modulation; It is the power adjustment value related to sending power control commands.

[0122] Alternatively, in another implementation, the UE determines the third offset value. (For example, the difference / mean of the difference / difference between the correlation coefficient of the radio frequency channel used for the second carrier and the correlation coefficient of the radio frequency channel used for the first carrier), the target received power is adjusted, for example, the adjusted target received power. for ,in, The serving cell determined by the UE based on the higher-layer configuration. carrier The target received power of the PUSCH on BWP b (second carrier). For example, the UE can determine the corresponding PUSCH transmission time according to the following formula. Using index as The parameter set configuration and index are as follows PUSCH transmit power during PUSCH power control adjustment state : [dBm] in, Maximum transmission power; This is the bandwidth allocated for PUSCH transmission; It is the subcarrier spacing configuration; It is the path loss compensation factor determined based on the RRC configuration; These are power adjustment values ​​related to encoding and modulation; It is a power adjustment value related to sending power control commands; For index-based The path loss calculated from the path loss reference signal (e.g., ,in, Provided by high-level signaling, By UE based on the index (obtained from the reference signal and related high-level configuration calculations), and, the index is The path reference signal is located on a first carrier that is different from the second carrier (e.g., in a different serving cell, or in a different carrier within the same serving cell).

[0123] Optionally, in another implementation, the third offset value is the difference / mean / mean of the radio frequency channel correlation coefficients of the higher frequency (e.g., carrier frequency, center frequency) and the lower frequency of a pair of carriers (e.g., a first carrier and a second carrier). (Alternatively, it can also be the difference / mean / mean of the radio frequency channel correlation coefficients of the lower frequency and the higher frequency of a pair of carriers). The UE uses the third offset value... Adjust the target received power, for example, the adjusted target received power. for ,in, The serving cell determined by the UE based on the higher-layer configuration. carrier The target received power of the PUSCH of BWP b on the second carrier. The UE determines the sign of the RF parameter offset adjustment based on a comparison between the second carrier frequency and the first carrier frequency: for example, when the second carrier frequency is higher (or lower) than the first carrier frequency, the adjusted target received power is... Conversely, the adjusted target received power is This method eliminates the need for the UE to store two offset values ​​with the same absolute value but different signs, significantly saving storage space for the UE's third offset value. For example, the UE can determine the corresponding PUSCH transmission time according to the following formula. Using index as The parameter set configuration and index are as follows PUSCH transmit power during PUSCH power control adjustment state : [dBm] in, Maximum transmission power; This is the bandwidth allocated for PUSCH transmission; It is the subcarrier spacing configuration; It is the path loss compensation factor determined based on the RRC configuration; These are power adjustment values ​​related to encoding and modulation; It is a power adjustment value related to sending power control commands; For index-based The path loss calculated from the path loss reference signal (e.g., ,in, Provided by high-level signaling, By UE based on the index (obtained from the reference signal and related high-level configuration calculations), and, the index is The path reference signal is located on a first carrier that is different from the second carrier (e.g., in a different serving cell, or in a different carrier within the same serving cell).

[0124] The aforementioned first offset value, second offset value, and third offset value, individually or in any combination, can be used to correct or offset power control parameters determined based on information associated with the reference signal, thereby determining more accurate power control parameters. For example, the path loss determined based on the reference signal on the first carrier or the target received power configured by higher layers can be corrected or offset based on the aforementioned offset values ​​or combinations thereof.

[0125] Optionally, in some examples, the method performed by a user equipment according to this disclosure may further include: transmitting capability information, wherein the capability information indicates whether the UE supports determining power control parameters associated with a second carrier based on a reference signal on a first carrier; receiving indication information; wherein determining the power control parameters on the second carrier based on information associated with the reference signal and at least one piece of information associated with the first carrier and the second carrier includes: if the indication information indicates that the UE determines the power control parameters associated with the second carrier based on the reference signal on the first carrier, determining the power control parameters associated with the second carrier based on the information associated with the reference signal and the at least one piece of information. For example, the indication information may be configured by a base station based on the capability information. For example, the capability information may be information on whether the UE supports obtaining the aforementioned first offset value, second offset value, or third offset value. For example, the capability information may be information indicating whether the UE has radio frequency calibration capabilities. For example, the capability information could indicate whether the UE supports calibration between the RF channels of the first carrier and the second carrier in the same frequency band (e.g., the band, FR (frequency range)). The third offset value is obtained (e.g., pre-stored) based on the RF calibration / RF channel calibration and the RF parameter difference (or RF channel coefficient difference) between different RF channels. For example, the capability information could indicate whether calibration is supported between the first carrier and the second carrier in the same frequency band (e.g., the band, FR (frequency range)). The third offset value is 0 based on the RF calibration / RF channel calibration and the calibrated compensation of the RF parameters (or RF channel coefficients) between different RF channels. For example, when the UE has RF calibration capability, it can be assumed that the UE supports determining the power control parameters associated with the second carrier based on the reference signal on the first carrier. For example, the capability information could include carrier combinations (or band combinations, FR combinations, etc., where the band / FR includes at least one carrier) that the UE can support for obtaining the third offset value. When two carriers configured for a UE (e.g., a first carrier and a second carrier) belong to the same carrier combination (or, a band combination, FR combination, etc.), the UE supports obtaining a third offset value associated with those two carriers. Considering UE complexity and storage capacity, calibration may only be performed on a limited number of RF channel combinations; for example, a reference RF channel may be set, and all other RF channels may be calibrated with the same reference RF channel. Therefore, it is necessary to support the UE in reporting carrier combinations that support the acquisition of the third offset value, so as to provide a reference for the base station to configure the power control parameters associated with the second carrier. For example, it is necessary to provide a reference for whether the base station configures a reference signal on a non-second carrier to determine the path loss in the uplink power control of the second carrier.

[0126] The following is a specific example of determining the transmit power of at least one uplink physical channel / physical signal on a second carrier. For example, taking PUSCH as the at least one uplink physical channel / physical signal, the transmit power of PUSCH on the second carrier can be determined through the following steps: Step 1: The UE can send capability information to the base station (i.e., report capability information). For example, capability information can be information indicating whether the UE has radio frequency calibration capability, such as including at least one of the following: whether the UE supports obtaining the difference in radio frequency channel correlation coefficients of the first carrier and the second carrier (e.g., obtaining the third offset value), whether the difference in radio frequency channel coefficients of the first carrier and the second carrier has been calibrated and compensated (e.g., the third offset value is 0), and the carrier combination that the UE can obtain the difference in radio frequency channel coefficients (e.g., obtaining the third offset value) (e.g., a supported combination of the first carrier and the second carrier). Step 2: The UE may receive indication information, and if the indication information instructs the UE to determine the power control parameters associated with the second carrier based on a reference signal on the first carrier, the UE determines the power control parameters associated with the second carrier based on information associated with the reference signal. For example, the indication information may indicate or configure whether the UE determines the power control parameters associated with the second carrier based on a reference signal on the first carrier. If the indication information instructs or configures the UE to determine the power control parameters associated with the second carrier based on a reference signal on the first carrier, the power control parameters associated with the second carrier may be determined based on information associated with the reference signal and at least one piece of information related to the first and second carriers. For example, the power control parameters associated with the second carrier may be determined based on information associated with the reference signal and the first offset value, second offset value, third offset value, and any combination thereof mentioned above. For example, based on information reported by the UE indicating that it has RF calibration capabilities (e.g., when the UE supports RF calibration), the UE can be configured to calculate the path loss based on downlink reference signals (e.g., SSB, CSI-RS, etc.) transmitted on a first carrier other than the second carrier, and perform a correction to the path loss as follows (taking the correction of the path loss based on a first offset value, a second offset value, and a third offset value as an example): , in, For use in determining the serving cell carrier Path loss of PUSCH transmit power transmitted by BWP b on (second carrier); Based on being sent in the serving cell carrier The index on (first carrier) is The path loss calculated using the reference signal (e.g., ,in, Provided by high-level signaling, By UE based on the index (Calculated using reference signals and related high-level configurations). First offset value (in, This is the reference frequency for the second carrier. The first carrier reference frequency; Logarithmic function; road loss coefficient Configure parameters for higher-level settings (e.g., typical / default value is 20); second offset value An offset value configured for higher layers, related to the downlink transmit antennas or beams of the first and second carriers, and / or the RF parameters of network-side nodes (e.g., related to RF channel calibration); a third offset value. The offset value, which is pre-stored for the UE and is related to the radio frequency parameters of the UE's first and second carriers, and the third offset value. The preceding symbol is determined based on the frequency comparison result of the first carrier and the second carrier (the specific method is as described in the previous embodiment); Step 3: The UE calculates the transmission power of the PUSCH on the second carrier based on the corrected path loss. For example, corresponding to the PUSCH transmission time... Using index as The parameter set configuration and index are as follows PUSCH transmit power during PUSCH power control adjustment state It can be calculated in the following way: [dBm] in, Maximum transmission power; The target power to be received, determined based on higher-level configuration (e.g., RRC configuration); This is the bandwidth allocated for PUSCH transmission; It is the subcarrier spacing configuration; It is the path loss compensation factor determined based on the RRC configuration; These are power adjustment values ​​related to encoding and modulation; This is the power adjustment value related to the transmission power control command. In the above method, the path loss of the first carrier (e.g., the path loss calculated based on the downlink reference signal transmitted on the first carrier, which is not the second carrier) is first corrected based on the first offset value, second offset value, third offset value, and any combination thereof mentioned above. Based on For the revised Multiplicative compensation has the advantage of reducing the path loss obtained through cross-carrier correction. When inaccurate, Can be used to reduce The weights (e.g., smaller network-side configurations) (Value selection), reducing the impact on uplink power control. Optionally, in some examples, when the UE is configured to determine the power control parameters associated with the second carrier based on a reference signal on a first carrier other than the second carrier, the UE based on... The first value is used to calculate the PUSCH transmit power; when the UE is configured to determine the power control parameters associated with the second carrier based on the reference signal on the second carrier, the UE... The second value is used to calculate the PUSCH transmit power. For example, the UE is configured with... The first value can be less than the second value, used to reduce... Weights in transmission power calculation.

[0127] For example, taking at least one uplink physical channel / physical signal as PRACH, the transmission power of PRACH on the second carrier can be determined through the following steps: Step 1: The UE can send capability information to the base station (i.e., report capability information). For example, capability information can be information indicating whether the UE has radio frequency calibration capability, such as including at least one of the following: whether the UE supports obtaining the difference in radio frequency channel correlation coefficients of the first carrier and the second carrier (e.g., obtaining the third offset value), whether the difference in radio frequency channel coefficients of the first carrier and the second carrier has been calibrated and compensated (e.g., the third offset value is 0), and the carrier combination (e.g., the combination of the first carrier and the second carrier) that the UE can obtain the difference in radio frequency channel coefficients (e.g., obtaining the third offset value). Step 2: The UE may receive indication information, and if the indication information instructs the UE to determine the power control parameters associated with the second carrier based on a reference signal on the first carrier, the UE determines the power control parameters associated with the second carrier based on information associated with the reference signal. For example, the indication information may indicate or configure whether the UE determines the power control parameters associated with the second carrier based on a reference signal on the first carrier. If the indication information instructs or configures the UE to determine the power control parameters associated with the second carrier based on a reference signal on the first carrier, the power control parameters associated with the second carrier may be determined based on information associated with the reference signal and at least one piece of information related to the first and second carriers. For example, the power control parameters associated with the second carrier may be determined based on information associated with the reference signal and the first offset value, second offset value, third offset value, and any combination thereof mentioned above. For example, based on information reported by the UE indicating that it has RF calibration capabilities (e.g., when the UE supports RF calibration), the UE can be configured to calculate the path loss based on downlink reference signals (e.g., SSB, CSI-RS, etc.) transmitted on a first carrier other than the second carrier, and perform a correction to the path loss as follows (taking the correction of the path loss based on a first offset value, a second offset value, and a third offset value as an example): , in, For use in determining the serving cell carrier Path loss of PRACH transmit power of BWP b on (second carrier); Based on being sent in the serving cell carrier The path loss calculated from the downlink reference signal (e.g., the SSB associated with PRACH transmission) on the (first carrier) is (e.g., ,in, The transmission power of the downlink reference signal, (The reference signal received power) is calculated by the UE based on the reference signal and related higher-layer configurations. First offset value (in, This is the reference frequency for the second carrier. The first carrier reference frequency; Logarithmic function; road loss coefficient Configure parameters for higher-level settings (e.g., typical / default value is 20); second offset value An offset value configured for higher layers, related to the downlink transmit antennas or beams of the first and second carriers, and / or the RF parameters of network-side nodes (e.g., related to RF channel calibration); a third offset value. The offset value, which is pre-stored for the UE and is related to the radio frequency parameters of the UE's first and second carriers, and the third offset value. The preceding symbol is determined based on the frequency comparison result of the first carrier and the second carrier (the specific method is as described in the previous embodiment); Step 3: The UE calculates the transmission power of PRACH on the second carrier based on the corrected path loss. For example, corresponding to the PRACH transmission time Based on the downlink reference signal of the first carrier, the UE determines the PRACH transmit power on the second carrier, which can be calculated as follows:

[0128] in, The UE is configured with maximum output power; The target receive power for PRACH is determined based on higher-layer configuration (e.g., RRC configuration). Alternatively, in another example, the UE determines the transmit power of at least one uplink physical channel / physical signal on the second carrier based on the following steps. Taking PUSCH as an example, the transmit power of PUSCH on the second carrier can be determined through the following steps: Step 1: The UE can send capability information to the base station (i.e., report capability information). For example, capability information can be information indicating whether the UE has radio frequency calibration capability, such as including at least one of the following: whether the UE supports obtaining the difference in radio frequency channel correlation coefficients of the first carrier and the second carrier (e.g., obtaining the third offset value), whether the difference in radio frequency channel coefficients of the first carrier and the second carrier has been calibrated and compensated (e.g., the third offset value is 0), and the carrier combination that the UE can obtain the difference in radio frequency channel coefficients (e.g., obtaining the third offset value) (e.g., a supported combination of the first carrier and the second carrier). Step 2: The UE can receive indication information, and if the indication information instructs the UE to determine the power control parameters associated with the second carrier based on a reference signal on the first carrier, the UE determines the power control parameters on the second carrier based on information associated with the reference signal and at least one piece of information associated with the first and second carriers. For example, the indication information may instruct or configure the UE to determine the power control parameters associated with the second carrier based on a reference signal on the first carrier. If the indication information instructs or configures the UE to determine the power control parameters associated with the second carrier based on a reference signal on the first carrier, the power control parameters on the second carrier can be determined based on information associated with the reference signal and at least one piece of information associated with the first and second carriers. For example, the power control parameters associated with the second carrier can be determined based on information associated with the reference signal and the first offset value, second offset value, third offset value, and any combination thereof mentioned above. For example, based on information reported by the UE indicating that it has RF calibration capabilities (e.g., when the UE supports RF calibration), the UE can be configured to calculate the path loss based on downlink reference signals (e.g., SSB, CSI-RS, etc.) transmitted on the first carrier (not the second carrier), and perform a correction to the target received power as follows: , in, The serving cell determined by the UE based on the higher-layer configuration. carrier Target received power of PUSCH for BWP b on (second carrier); first offset value (in, This is the reference frequency for the second carrier. The first carrier reference frequency; Logarithmic function; road loss coefficient Configure parameters for higher-level settings (e.g., typical / default value is 20); second offset value An offset value configured for higher layers, related to the downlink transmit antennas or beams of the first and second carriers, and / or the RF parameters of network-side nodes (e.g., related to RF channel calibration); a third offset value. The offset value, which is pre-stored for the UE and is related to the radio frequency parameters of the UE's first and second carriers, and the third offset value. The preceding symbol is determined based on the frequency comparison result of the first carrier and the second carrier (the specific method is as described in the previous embodiment); Step 3: The UE receives power according to the corrected target power. Calculate the transmission power of PUSCH on the second carrier. For example, the corresponding PUSCH transmission time. Using index as The parameter set configuration and index are as follows PUSCH transmit power during PUSCH power control adjustment state It can be calculated as follows: [dBm] in, Maximum transmission power; This is the bandwidth allocated for PUSCH transmission; It is the subcarrier spacing configuration; It is a path loss compensation factor determined based on higher-level configurations (e.g., RRC configurations); These are power adjustment values ​​related to encoding and modulation; It is a power adjustment value related to sending power control commands; For index-based The path loss calculated from the path loss reference signal (e.g., ,in, Provided by high-level signaling, By UE based on the index (obtained from the reference signal and related high-level configuration calculations), and, the index is The path reference signal is located on a first carrier that is different from the second carrier (e.g., in a different serving cell, or in a different carrier within the same serving cell).

[0129] For example, taking at least one uplink physical channel / physical signal as PRACH, the transmission power of PRACH on the second carrier can be determined through the following steps: Step 1: The UE can send capability information to the base station (i.e., report capability information). For example, capability information can be information indicating whether the UE has radio frequency calibration capability, such as including at least one of the following: whether the UE supports obtaining the difference in radio frequency channel correlation coefficients of the first carrier and the second carrier (e.g., obtaining the third offset value), whether the difference in radio frequency channel coefficients of the first carrier and the second carrier has been calibrated and compensated (e.g., the third offset value is 0), and the carrier combination (e.g., the combination of the first carrier and the second carrier) that the UE can obtain the difference in radio frequency channel coefficients (e.g., obtaining the third offset value). Step 2: The UE can receive indication information, and if the indication information instructs the UE to determine the power control parameters associated with the second carrier based on a reference signal on the first carrier, the UE determines the power control parameters associated with the second carrier based on information associated with the reference signal. For example, the indication information may indicate or configure whether the UE determines the power control parameters associated with the second carrier based on a reference signal on the first carrier. If the indication information instructs or configures the UE to determine the power control parameters associated with the second carrier based on a reference signal on the first carrier, the power control parameters associated with the second carrier can be determined based on information associated with the reference signal and at least one piece of information related to the first and second carriers. For example, the power control parameters associated with the second carrier can be determined based on information associated with the reference signal and the first offset value, second offset value, third offset value, and any combination thereof mentioned above. For example, based on information reported by the UE indicating that it has RF calibration capabilities (e.g., when the UE supports RF calibration), the UE can be configured to calculate the path loss based on downlink reference signals (e.g., SSB, CSI-RS, etc.) transmitted on the first carrier (not the second carrier), and perform a correction to the target received power as follows: , in, For serving cells determined based on higher-level configurations (e.g., RRC configurations) carrier PRACH target received power of BWP b on (second carrier); First offset value (in, This is the reference frequency for the second carrier. The first carrier reference frequency; Logarithmic function; road loss coefficient Configure parameters for higher-level settings (e.g., typical / default value is 20); second offset value An offset value configured for higher layers, related to the downlink transmit antennas or beams of the first and second carriers, and / or the RF parameters of network-side nodes (e.g., related to RF channel calibration); a third offset value. The offset value, which is pre-stored for the UE and is related to the radio frequency parameters of the UE's first and second carriers, and the third offset value. The preceding symbol is determined based on the frequency comparison result of the first carrier and the second carrier (the specific method is as described in the previous embodiment); Step 3: The UE calculates the PRACH transmission power on the second carrier based on the corrected path loss. For example, corresponding to the PRACH transmission time... Based on the downlink reference signal of the first carrier, the UE determines the PRACH transmit power on the second carrier, which can be calculated as follows:

[0130] in, The UE is configured with maximum output power; For use in determining the serving cell carrier Path loss of PRACH transmit power of BWP b on (second carrier) (e.g., UE based on being transmitted in the serving cell) carrier Calculation of downlink reference signal (e.g., SSB associated with PRACH transmission) on (first carrier) (For example, ,in, The transmission power of the downlink reference signal, (The reference signal received power) is calculated by the UE based on the reference signal and the relevant higher-layer configuration.

[0131] It should be noted that the formula for calculating the transmission power mentioned above is merely an example. Under the inventive concept of this disclosure, various modifications can be made to the above example without departing from the spirit and scope of the inventive concept disclosed in the claims and specification of this disclosure.

[0132] Optionally, in some examples, before receiving the reference signal on the first carrier, the method may further include: determining, based on configuration information, the carrier to which the reference signal is transmitted, wherein the carrier includes a second carrier or a first carrier, wherein receiving the reference signal on the first carrier includes: receiving the reference signal on the first carrier in response to determining that the carrier is the first carrier. In some examples, the configuration information may include: first configuration information regarding a reference signal for at least one uplink physical channel or physical signal on the second carrier, wherein the first configuration information includes a carrier index for which the reference signal for at least one uplink physical channel or physical signal is transmitted, wherein the carrier index indicates the carrier (i.e., the carrier to which the reference signal is transmitted). For example, the UE can obtain first configuration information (e.g., higher-layer configuration information PUSCH-PathlossReferenceRS) regarding path loss reference signals for at least one uplink physical channel or physical signal on a second carrier. This first configuration information includes a carrier index (e.g., a "cell index" indicating the cell (corresponding to the carrier) where the reference signal is transmitted; this cell index can indicate a second cell (corresponding to the second carrier) or a first cell (corresponding to the first carrier)). Optionally, in some examples, this carrier index at least indicates whether the path loss reference signal is transmitted on the second carrier or on a non-second carrier (e.g., at least one first carrier). For the above example, if the carrier on which the reference signal is transmitted is a second carrier, the UE can receive the reference signal on the second carrier according to the configuration parameters of the reference signal transmitted on the second carrier, determine the power control parameters associated with the second carrier based on the information associated with the reference signal on the second carrier, and determine the transmission power of at least one uplink physical channel or physical signal on the second carrier based on the determined power control parameters. For example, the path loss is determined based on the reference signal on the second carrier, and the transmission power of at least one uplink physical channel or physical signal on the second carrier is determined based on the path loss. In this case, the offset processing of the power control parameters on the second carrier in subsequent steps is not involved; No If the carrier on which the reference signal is transmitted is the first carrier, then the reference signal on the first carrier is received, and the power control parameters associated with the second carrier are determined based on the information associated with the reference signal on the first carrier and the information associated with the first carrier and the second carrier. Based on the determined power control parameters, the transmission power of at least one uplink physical channel or physical signal on the second carrier is determined. For example, the path loss of the first carrier is determined based on the received reference signal on the first carrier, and the determined path loss is offset or corrected based on the information associated with the first carrier and the second carrier. Based on the offset or corrected path loss, the transmission power of at least one uplink physical channel or physical signal on the second carrier is determined.Optionally, in some examples, the first configuration information includes a first downlink reference signal on a first carrier and a second downlink reference signal on a second carrier; and the UE determines one of the two reference signals as a path loss reference signal for at least one uplink physical channel or physical signal (e.g., PUSCH) on the second carrier according to the third configuration information. The third configuration information may be a path loss reference signal indicating that the first downlink reference signal or the second downlink reference signal is a path loss reference signal for at least one uplink physical channel or physical signal on the second carrier. Alternatively, the third configuration information may be a threshold for determining the first downlink reference signal or the second downlink reference signal as a path loss reference signal for at least one uplink physical channel or physical signal (e.g., PUSCH) on the second carrier, such as a time-domain interval threshold. (For example, Each time-domain unit can be a time slot / time-domain symbol, etc. For example, when the time interval between the PUSCH transmission time and the most recent second downlink reference signal transmission time is less than the time-domain interval threshold. If the path loss is determined by the UE, then the second downlink reference signal is used as the path loss reference signal for at least one uplink physical channel or physical signal (e.g., PUSCH) on the second carrier (i.e., the UE determines the path loss in PUSCH power control on the second carrier based on the second downlink reference signal); otherwise, the first downlink reference signal is used as the path loss reference signal for at least one uplink physical channel or physical signal (e.g., PUSCH) on the second carrier. The main purpose of this design is that, in a practical system, an infrequent periodic downlink reference signal (e.g., SSB) can be retained on the second carrier. Considering accuracy, for UEs performing uplink transmission on the second carrier, it is still preferable to use the downlink reference signal on the same carrier to calculate the path loss, and use the downlink reference signal on the first carrier as a supplement for situations where the downlink reference signal on the second carrier is not applicable (e.g., when the downlink reference signal time interval on the second carrier is long, using the downlink reference signal on the second carrier may lead to outdated path loss estimation or additional delay).

[0133] Figure 5This is a schematic diagram illustrating an example of determining a path loss reference signal according to an exemplary embodiment of the present disclosure. As an example, the first carrier and the second carrier can be carriers corresponding to different serving cells. Assume the first carrier corresponds to a first cell (e.g., primary cell Pcell), and the second carrier corresponds to a second cell (e.g., secondary cell Scell). For example, in a practical system, an infrequent periodic downlink reference signal (e.g., SSB) can be retained on the Scell. For the UE on the Scell, it is still preferable to use the downlink reference signal on the Scell ​​to calculate the path loss more accurately, and the downlink reference signal on a different cell (e.g., Pcell) is used as a supplement only when the downlink reference signal of the same cell is unavailable. For this purpose, the UE can be configured with a downlink reference signal on the Pcell and a downlink reference signal on the Scell. When the PUSCH transmission time on the Scell ​​immediately follows the downlink reference signal on the Scell, the UE will use the downlink reference signal on the Scell ​​as the path loss reference signal to determine the path loss; otherwise, the UE will use the downlink reference signal on the Pcell as the path loss reference signal to determine the path loss. For example, as... Figure 5 As shown, the UE on the Scell ​​can determine whether to use the downlink reference signal from the same cell or the downlink reference signal from a different cell as the path loss reference signal through the following operations: The UE obtains information about the first downlink reference signal from a different cell, the second downlink reference signal from the same cell, and... Configuration; if the time interval between the PUSCH transmission time and the transmission time of the most recent second downlink reference signal is less than the time domain interval threshold. If the path loss is due, the second reference signal on the same cell is used as the path loss reference signal; otherwise, the first reference signal on a different cell is used as the path loss reference signal.

[0134] Optionally, in some examples, the method performed by a user equipment according to this disclosure may further include: acquiring second configuration information related to power control of at least one uplink physical channel or physical signal on a second carrier; wherein determining power control parameters associated with the second carrier based on information associated with the reference signal and at least one piece of information associated with the first carrier and the second carrier includes: determining power control parameters associated with the second carrier based on the reference signal on the first carrier in response to the second configuration information indicating that the power control parameters associated with the second carrier are determined based on the information associated with the reference signal and the at least one piece of information. For example, the second configuration information includes at least one of the following: information indicating whether power control parameters corresponding to the first carrier are available, and information indicating whether the first carrier and the second carrier have a preset association relationship, wherein the power control parameters corresponding to the first carrier are power control parameters determined based on the reference signal of an uplink physical channel / physical signal of the same type as the at least one uplink physical channel / physical signal transmitted by the UE on the first carrier. For example, in response to the second configuration information indicating that the power control parameters corresponding to the first carrier are available or that the first carrier and the second carrier have a preset association relationship (e.g., the first carrier is the UE's primary cell / primary carrier, and the second carrier is the UE's secondary cell / secondary carrier), the power control parameters associated with the second carrier are determined based on the information associated with the reference signal and at least one piece of information associated with the first carrier and the second carrier. Otherwise, the UE may request to be configured with a reference signal on the second carrier, and then the UE may determine the power control parameters associated with the second carrier based on the information associated with the reference signal on the second carrier, and further determine the transmission power of at least one uplink physical channel / physical signal on the second carrier based on the determined power control parameters.

[0135] For example, the UE can obtain second configuration information related to power control of at least one uplink physical channel or physical signal on the second carrier. This second configuration information may include at least one of the following: an indication of whether the path loss corresponding to the first carrier is available, and whether the first carrier and the second carrier have a preset association relationship (e.g., the first carrier is the UE's primary cell / primary carrier, and the second carrier is the UE's secondary cell / secondary carrier). The path loss corresponding to the first carrier is calculated based on a reference signal transmitted on the first carrier. The reference signal transmitted on the first carrier may be a path loss reference signal of an uplink physical channel / physical signal of the same type as at least one uplink physical channel or physical signal transmitted by the same UE on the first carrier. For the above example, when the second configuration information indicates that the path loss corresponding to the first carrier is unavailable or the carrier on which the path loss reference signal is transmitted is the second carrier, the UE receives the path loss reference signal on the second carrier according to the configuration parameters of the path loss reference signal transmitted on the second carrier and determines the path loss based on the information associated with the path loss reference signal. Based on the path loss, the UE determines the transmission power of the at least one uplink physical channel or physical signal. In this case, the offset processing of the power control parameters on the second carrier in subsequent steps is not involved. Otherwise, the path loss of at least one uplink physical channel or physical signal on the second carrier is determined based on the path loss of the first carrier and the information associated with the first carrier and the second carrier, and the transmission power of at least one uplink physical channel or physical signal on the second carrier is determined based on the determined path loss. The path loss of the first carrier is determined by the UE based on the reference signal received on the first carrier.

[0136] Optionally, in some examples, the method performed by a user equipment according to this disclosure may further include: obtaining the association between a PRACH transmitted on a second carrier and a downlink reference signal (e.g., SSB, CSI-RS) transmitted on a first carrier; and determining, based on the association, the downlink reference signal on the first carrier used to calculate path loss in PRACH power control on the second carrier. The associations include a first association (e.g., index association) between an SSB transmitted on the second carrier and an SSB or CSI-RS transmitted on the first carrier; and a second association between a PRACH transmitted by the UE on the second carrier and an SSB on the second carrier. The first association can be configured via higher-layer signaling (e.g., the UE receives RRC signaling indicating that the SSB at index i on the second carrier is associated with the SSB / CSI-RS at index j on the first carrier). The configuration information for configuring the first association may include multiple sets of the index associations. The second association can be obtained through PRACH-related configuration information; for example, the SSB associated with the PRACH on the second carrier may be an SSB used to determine the random access occasion (RACH occasion) for transmitting the PRACH (e.g., in PDCCH). The SSB index is indicated in the DCI format of the order. Based on the second association and the first association, the UE determines a first carrier downlink reference signal for calculating path loss in PRACH power control on the second carrier. Optionally, in some examples, the UE may obtain two reference signals for calculating path loss in PRACH power control on the second carrier: a downlink reference signal on the first carrier (e.g., obtained based on the first and second associations described above), and a downlink reference signal on the second carrier (e.g., obtained based on the second association described above); and the UE determines one of the two reference signals as the reference signal for calculating path loss in PRACH power control on the second carrier according to third configuration information. The third configuration information may be a carrier (or cell, cell carrier) indication (used to indicate that the downlink reference signal on the first or second carrier is used to calculate path loss in PRACH power control on the second carrier). The third configuration information may also be a threshold for determining whether one of the downlink reference signals on the first or second carrier is used for path loss calculation in PRACH power control on the second carrier: a time-domain interval threshold. (For example, Each time-domain unit can be a time slot / time-domain symbol, etc. For example, when the time interval between the transmission time of PRACH and the transmission time of the most recent downlink reference signal on the preceding second carrier is less than the time-domain interval threshold. If the downlink reference signal on the second carrier is used, the UE determines the path loss in PRACH power control on the second carrier based on the downlink reference signal on the first carrier; otherwise, the UE determines the path loss in PRACH power control on the second carrier based on the downlink reference signal on the first carrier. The main purpose of this design is that, in practical systems, an infrequent periodic downlink reference signal (e.g., SSB) can be retained on the second carrier. Considering accuracy, for UEs performing uplink transmission on the second carrier, it is still preferable to use the downlink reference signal on the same carrier to calculate the path loss, and use the downlink reference signal on the first carrier as a supplement in cases where the downlink reference signal on the second carrier is not applicable (e.g., when the downlink reference signal time interval on the second carrier is long, using the downlink reference signal on the second carrier may lead to outdated path loss estimation or additional delay).

[0137] Optionally, in other examples, the method performed by a user equipment according to this disclosure may further include: determining the reference signal for determining the power control parameters associated with the second carrier based on a predetermined association between the first carrier and the second carrier. For example, the predetermined association may include: the second carrier being a carrier of a first secondary cell (e.g., a target secondary cell), and the first carrier being a primary cell carrier or a carrier of an activated second secondary cell, wherein the activation operation of the activated second secondary cell precedes that of the first secondary cell. For example, the predetermined association may also include: the second carrier being a capacity carrier (e.g., reducing reference signal overhead such as SSB / CSI-RS on this carrier / cell, primarily for uplink and downlink data transmission such as PUSCH and PDSCH), and the first carrier being a coverage carrier (e.g., retaining normal reference signal overhead such as SSB / CSI-RS on this carrier / cell, primarily providing basic functions such as initial access and RRC connection for the UE). Optionally, in other examples, the method performed by a user equipment according to this disclosure may further include: acquiring the configuration of a plurality of reference signals on a plurality of first carriers; determining the plurality of reference signals based on the configuration of the plurality of reference signals; and determining one of the plurality of reference signals as a reference signal for determining power control parameters associated with a second carrier according to a first rule, wherein the plurality of reference signals includes a downlink reference signal transmitted on each of the plurality of first carriers. For example, when a network-side node transmits a plurality of downlink reference signals on a plurality of first carriers, the UE can determine a reference signal from the plurality of first carriers as a reference signal for determining power control parameters associated with a second carrier in the above manner. For example, the configuration of the at least one reference signal may be acquired based on configuration information. For example, the first rule may include: determining the reference signal on the first carrier whose frequency is closest to that of the second carrier among the plurality of first carriers as the reference signal for determining power control parameters associated with the second carrier based on the frequency position of each first carrier and the second carrier. For example, selecting a path loss reference signal on a carrier with a closer frequency position, the path loss determined based on this path loss reference signal is closer to the path loss on the second carrier, and is therefore more suitable for determining the transmission power of the uplink physical channel or physical signal on the second carrier.

[0138] Optionally, in other examples, the method performed by a user equipment according to this disclosure may further include: determining whether a power control parameter determined based on information associated with the reference signal and the at least one piece of information (i.e., at least one piece of information related to the first carrier and the second carrier mentioned above) satisfies a first condition; if the power control parameter determined based on the information associated with the reference signal and the at least one piece of information does not satisfy the first condition, then sending uplink request information, the uplink request information being used to request a reference signal on a second carrier configured to determine the power control parameter associated with the second carrier; wherein determining the transmission power of at least one uplink physical channel or physical signal on the second carrier based on the power control parameter includes: if the power control parameter determined based on the information associated with the reference signal and the at least one piece of information satisfies the first condition, then determining the transmission power based on the power control parameter. For example, the first condition may include: the difference between the power control parameter determined based on the information associated with the reference signal on the first carrier and the at least one piece of information and the power control parameter determined based on the information associated with the reference signal on the second carrier is less than a threshold. For example, the threshold may be a predetermined value or a configured threshold value. For example, the first condition may further include: For example, in a specific instance, if the UE has determined, in a prior time period (e.g., within a predetermined time window) that a downlink reference signal on a first carrier is a path loss reference signal for at least one uplink physical channel or physical signal on a second carrier, and has determined the path loss based on information associated with the path loss reference signal and information related to the first and second carriers, the UE determines whether to determine the transmission power of at least one uplink physical channel or physical signal on the second carrier based on whether the determined path loss satisfies a first condition. When the determined path loss does not satisfy the first condition, the UE can send uplink request information to request a configured downlink reference signal on the second carrier (e.g., periodic CSI-RS), so that the UE can determine the power control parameters associated with the second carrier based on the downlink reference signal on the second carrier, and thus determine the transmission power of at least one uplink physical channel or physical signal on the second carrier. Otherwise, when the determined path loss satisfies the first condition, the UE can determine the transmission power of at least one uplink physical channel or physical signal on the second carrier based on the determined path loss. For example, the first condition could be: the path loss corresponding to the second carrier calculated based on the downlink reference signal transmitted on the second carrier (e.g., the demodulation reference signal of the PDSCH (such as SPS PDSCH, etc.) transmitted on the second carrier; or, a periodic CSI-RS; or, aperiodic CSI-RS; or PDCCH DMRS; or SSB on the second carrier). The path loss is based on the determined path loss corresponding to the first carrier, after offset correction (such as any offset correction method described in the previous example, or a combination of correction methods). Between ,in, This is a predetermined or configured path loss monitoring threshold. Optionally, in some examples, the UE is configured with transmit power information of the downlink reference signal transmitted on the second carrier, and calculates the path loss corresponding to the second carrier based on the transmit power information. .

[0139] For example, in a specific example, such as Figure 6 As shown, in response to the UE being configured to use a downlink reference signal of a first carrier (not the second carrier) as a path loss reference signal for at least one uplink physical channel or physical signal (e.g., PUSCH) on the second carrier, in step S610, the UE receives configuration information related to a monitoring signal (also referred to as a monitoring reference signal) and / or a first condition, wherein the first condition is used to monitor whether the downlink reference signal of the first carrier is accurate (or valid) as a path loss reference signal of the second carrier, and the monitoring signal is the downlink reference signal on the second carrier related to the first condition. In step S620, based on the monitoring signal and the downlink reference signal of the first carrier, it is determined whether the first condition is met. When the first condition is not met, in step S630, the UE sends uplink request information, which is used to request the downlink reference signal on the second carrier configured to determine the power control parameters associated with the second carrier. In response to the first condition being met, the UE does not send uplink request information, for example, as Figure 6As shown, the system continues to monitor whether the first condition is met. The monitoring signal can be the demodulation reference signal PDCCH DMRS of the physical downlink control channel (e.g., the PDCCH can be the PDCCH that schedules the PUSCH on the second carrier). The configuration received by the UE related to the monitoring signal can include at least one of the following: the type of downlink reference signal as the monitoring signal (e.g., the UE is configured with one of several downlink reference signals {PDCCH DMRS, PDSCH DMRS, SSB, CSI-RS} on the second carrier); the downlink reference signal index as the monitoring signal (e.g., when SSB / CSI-RS is the monitoring signal, the UE is configured with an SSB index or a CSI-RS resource index: the downlink reference signal with that index on the second carrier is the monitoring signal); the power of the downlink reference signal as the monitoring signal (e.g., downlink transmit power); and the power difference (e.g., downlink transmit power difference) between the downlink reference signal as the monitoring signal and the downlink reference signal of the first carrier (the monitored downlink reference signal of the first carrier, which serves as the path loss reference signal of the second carrier). In existing systems, the UE is not aware of the transmission power of all downlink reference signals (e.g., the transmission power of PDSCH / PDCCH DMRS depends on the base station implementation and is not indicated to the UE). Since the monitoring signal will be used for the first condition determination in subsequent path loss calculation, the downlink transmission power of the monitoring signal needs to be indicated. The configuration received by the UE related to the first condition may include a path loss monitoring threshold. For example, the first condition could be... ,in, The reference signal received power for the monitoring signal; The power difference between the downlink reference signal used as the monitoring signal and the downlink reference signal of the first carrier is configured by the network side. The reference signal received power of the downlink reference signal of the first carrier (the monitored downlink reference signal of the first carrier, which serves as the path loss reference signal of the second carrier); the first offset value. Second offset value Third offset value as well as The sign before the plus or minus sign can be determined as shown in the previous embodiments.

[0140] Figure 7 This is a schematic diagram illustrating communication between a user equipment and a gNB according to an exemplary embodiment of this disclosure. Figure 7 As shown, in S710, the UE reports capability information to the gNB. For example, the capability information may include whether the UE supports obtaining a third offset value. (For example, whether it supports obtaining the third offset value based on RF calibration of the first and second carriers) (and / or the UE can support obtaining the third offset value) The carrier or carrier combination (e.g., a combination of a first carrier and a second carrier). Next, in S720, the gNB sends configuration information to the user equipment based on the capability information. For example, the configuration information includes first configuration information regarding the path loss reference signal of at least one uplink physical channel or physical signal (e.g., PUSCH or PRACH) on the second carrier (e.g., the carrier index on which the path loss reference signal is transmitted), and parameters for offsetting or correcting path loss (e.g., for calculating a first offset value). Second offset value Path loss compensation factor (alpha), time-domain interval threshold And so on. In the S730, the user equipment determines the path loss reference signal to use based on the received configuration information. For example, the user equipment can, as described above... Figure 5 The path loss reference signal is determined in the manner shown, for example, determining whether to use a downlink reference signal on the same cell (carrier) or a downlink reference signal on a different cell (carrier) as the path loss reference signal. In S740, the user equipment receives the path loss reference signal from the gNB, for example, a path loss reference signal on the same cell or a different cell. In S750, the user equipment calculates the path loss based on the path loss reference signal and determines the transmission power of at least one uplink physical channel or physical signal (e.g., PUSCH or PRACH) on the second carrier based on the path loss. In S760, the user equipment performs uplink transmission (e.g., transmits PUSCH or PRACH) based on the determined transmission power.

[0141] It should be noted that, Figure 7 This is merely an example of communication between a user equipment and a gNB according to the exemplary embodiments described above; however, communication between a user equipment and a gNB according to this disclosure is not limited thereto. The methods performed by a user equipment according to embodiments of this disclosure have been described above with reference to examples.

[0142] According to embodiments of this disclosure, a method executed by a network-side node is also provided.

[0143] Figure 8 This is a flowchart illustrating a method performed by a network-side node according to an embodiment of the present disclosure. For example, the network-side node may be a base station, gNB, IAB, etc., but is not limited thereto. See also... Figure 8In step S810, a reference signal on the first carrier is transmitted to the UE. In step S820, at least one uplink physical channel or physical signal of the UE on the second carrier is received, wherein the transmission power of the at least one uplink physical channel or physical signal is determined based on power control parameters, which are determined based on information associated with the reference signal and at least one piece of information associated with the first carrier and the second carrier.

[0144] The description of methods executed by user equipment above has already covered the relevant content related to methods executed by network-side nodes, and will not be repeated here. For details, please refer to the previous text. For example, in the description of methods executed by user equipment above, the receiving end corresponding to the sending operation can be a network-side node, and the sending end corresponding to the receiving operation can be a network-side node. Therefore, based on the sending or receiving operations performed by the user equipment, the corresponding operations that the network-side node can perform can be inferred. For example, the various configuration information mentioned in the description of methods executed by user equipment can be configured by the network-side node. Therefore, based on the operations performed by the user equipment, such as obtaining configuration information, the corresponding configuration operations that the network-side node can perform can be inferred.

[0145] According to the method provided in the embodiments of this disclosure, the UE does not necessarily need to receive a reference signal on the second carrier to determine the transmission power of at least one uplink physical channel or physical signal on the second carrier. Instead, it can receive a reference signal on the first carrier, determine the power control parameters associated with the second carrier based on information associated with the reference signal on the first carrier and information associated with the first and second carriers, and then determine the transmission power of at least one uplink physical channel or physical signal on the second carrier based on the determined power control parameters. This avoids unnecessary resource overhead caused by the network-side node separately configuring the reference signal on the first carrier and the reference signal on the second carrier in carrier aggregation scenarios, and separately determining the transmission power of at least one uplink physical channel or physical signal on the corresponding carrier based on the reference signal on different carriers. It also simplifies the power control process, thereby improving network transmission rate and user speed experience.

[0146] The methods according to embodiments of the present disclosure have been described above. According to embodiments of the present disclosure, a user equipment and a network-side node are also provided.

[0147] Figure 9 This is a block diagram illustrating a user equipment according to an embodiment of the present disclosure. (Refer to...) Figure 9User equipment 900 may include a transceiver 910 and a processor 920, wherein the processor 920 is coupled to the transceiver 910 and configured to perform the methods described above by the user equipment. For example, the user equipment may be a user equipment supporting carrier aggregation capabilities.

[0148] Figure 10 This is a block diagram illustrating a network-side node according to an embodiment of the present disclosure. (Refer to...) Figure 7 The network-side node 1000 may include a transceiver 1010 and a processor 1020, wherein the processor 1020 is coupled to the transceiver 1010 and configured to perform the methods described above by the network-side node. For example, the network-side node may be a base station, gNB, IAB, etc., but is not limited thereto.

[0149] According to embodiments of this disclosure, a computer-readable storage medium storing instructions may also be provided, wherein when the instructions are executed by at least one processor, they cause the at least one processor to perform any of the methods described above. Examples of computer-readable storage media herein include: read-only memory (ROM), random access programmable read-only memory (PROM), electrically erasable programmable read-only memory (EEPROM), random access memory (RAM), dynamic random access memory (DRAM), static random access memory (SRAM), flash memory, non-volatile memory, CD-ROM, CD-R, CD+R, CD-RW, CD+RW, DVD-ROM, DVD-R, DVD+R, DVD-RW, DVD+RW, DVD-RAM, BD-ROM, BD-R, BD-R LTH, BD-RE, Blu-ray or optical disc storage, hard disk drive (HDD), solid-state drive (SSD), card storage (such as multimedia cards, secure digital (SD) cards, or ultra-fast digital (XD) cards), magnetic tape, floppy disk, magneto-optical data storage device, optical data storage device, hard disk, solid-state drive, and any other device configured to store a computer program and any associated data, data files, and data structures in a non-transitory manner and to provide the computer program and any associated data, data files, and data structures to a processor or computer so that the processor or computer can execute the computer program. The instructions or computer program in the aforementioned computer-readable storage medium can run in an environment deployed in computer devices such as clients, hosts, agent devices, servers, etc. Furthermore, in one example, the computer program and any associated data, data files, and data structures are distributed across a networked computer system, such that the computer program and any associated data, data files, and data structures are stored, accessed, and executed in a distributed manner through one or more processors or computers.

[0150] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are defined by the claims.

Claims

1. A method executed by a user equipment (UE), comprising: Receive the reference signal on the first carrier wave; The power control parameters associated with the second carrier are determined based on information associated with the reference signal and at least one piece of information associated with the first carrier and the second carrier. The transmission power of at least one uplink physical channel or physical signal on the second carrier is determined based on the power control parameters.

2. The method according to claim 1, wherein, The at least one piece of information related to the first carrier and the second carrier includes at least one of the following: A first offset value related to the frequency of the first carrier and the frequency of the second carrier; A second offset value related to the downlink transmit antennas or beams of the first and second carriers, and / or the radio frequency parameters of the network-side nodes; A third offset value related to the radio frequency parameters of the UE for the first and second carriers.

3. The method according to claim 2, wherein, The first offset value includes an offset value determined based on the ratio of the reference frequency of the second carrier to the reference frequency of the first carrier; The second offset value is obtained based on the higher-level configuration; and / or The third offset value includes at least one of the following: the instantaneous difference between the radio frequency parameters of the first carrier and the radio frequency parameters of the second carrier, the mean of the instantaneous difference over a period of time, or the difference between the mean of the first time period and the mean of the second time period.

4. The method according to claim 1, wherein, The information associated with the reference signal includes at least one of the following: Information related to the carrier wave to which the reference signal is transmitted; Measurements based on the reference signal.

5. The method according to claim 4, wherein, Measurements based on the reference signal include at least one of the following: the received power of the reference signal, the received power of the filtered reference signal, and the path loss determined based on the reference signal.

6. The method according to claim 1, wherein, The power control parameters include at least one of the following: The target received power corresponding to the second carrier or the target received power offset corresponding to the second carrier; The path loss corresponding to the second carrier or the path loss offset corresponding to the second carrier; The path loss compensation factor corresponding to the second carrier.

7. The method according to claim 1, wherein, The first carrier and the second carrier are different carriers of the same serving cell, or the first carrier and the second carrier are carriers corresponding to different serving cells.

8. The method according to claim 1, further comprising: The first path loss is determined based on the reference signal; The power control parameters associated with the second carrier include: a second path loss, which is determined based on the first path loss and the at least one piece of information; The transmission power of at least one uplink physical channel or physical signal on the second carrier is determined based on the second path loss.

9. The method according to claim 8, wherein, The second path loss is determined as follows: Determine the path loss offset corresponding to the second carrier based on the at least one piece of information; The second path loss is determined based on the first path loss and the path loss offset.

10. The method according to claim 1, further comprising: The first path loss is determined based on the reference signal; And, based on the higher-layer configuration, determine the first target received power of the at least one uplink physical channel or physical signal; The power control parameters associated with the second carrier include: the first path loss, and the second target received power of at least one uplink physical channel or physical signal on the second carrier. The second target received power is determined based on the first target received power and the at least one piece of information; The transmission power of at least one uplink physical channel or physical signal on the second carrier is determined based on the first path loss and the second target reception power.

11. The method according to claim 10, wherein, The second target received power is determined in the following manner: Determine the target received power offset corresponding to the second carrier based on the at least one piece of information; The second target received power is determined based on the first target received power and the target received power offset.

12. The method according to claim 1, further comprising: Send capability information, wherein the capability information indicates whether the UE supports determining power control parameters associated with the second carrier based on a reference signal on the first carrier; Receive instruction information; Determining the power control parameters associated with the second carrier based on information associated with the reference signal and at least one piece of information associated with the first carrier and the second carrier includes: when the indication information instructs the UE to determine the power control parameters associated with the second carrier based on the reference signal on the first carrier, determining the power control parameters associated with the second carrier based on information associated with the reference signal and the at least one piece of information.

13. A method executed by a network-side node, comprising: Send a reference signal on the first carrier to the user equipment (UE); The UE receives at least one uplink physical channel or physical signal on the second carrier. The transmission power of the at least one uplink physical channel or physical signal is determined based on power control parameters, which are determined based on information associated with the reference signal and at least one piece of information associated with the first carrier and the second carrier.

14. A user equipment, comprising: transceiver A processor, coupled to the transceiver, is configured to perform the method according to any one of claims 1 to 12.

15. A network side node, comprising: transceiver A processor, coupled to the transceiver, is configured to perform the method according to claim 13.

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