Method and apparatus for controlling transmission power

Abstract

The present disclosure describes methods, systems, and devices for controlling transmission power. A method includes performing, by a user equipment (UE), transmission power control for an uplink (UL) transmission by: receiving, by the UE, a message corresponding to the transmission power control; determining, by the UE, a power control parameter from the message; and transmitting, by the UE, the UL transmission with the transmit power according to the power control parameter. Another method includes configuring, by a base station, transmission power control for UL transmissions by transmitting, by the base station, a message corresponding to the transmission power control to a UE such that the UE is configured to determine a power control parameter according to the message; and receiving, by the base station, UL transmissions from the UE using the transmit power according to the power control parameters.

Description

Technical Field

[0001] The present disclosure relates generally to wireless communications and, more particularly, to methods and apparatus for controlling transmission power. Background Art

[0002] Wireless communication technology is driving the world towards an increasingly connected and networked society. In wireless communication systems, time domain resources are split between downlink and uplink communications. An emerging trend in mobile communications is to use multiple wireless technologies in parallel. When uplink and downlink communications exist in different frequency domain resources in the same time domain resource, cross-link interference of time-frequency resources may occur, hampering the performance of wireless communication.

[0003] The present disclosure describes various embodiments for controlling transmission power, solves at least one of the issues / problems associated with cross-link interference of time-frequency resources, provides improvements in the field of wireless communication technology, and enhances the efficiency and performance of wireless communications. Summary of the invention

[0004] This document relates to methods, systems and devices for wireless communication, and more specifically, to methods, systems and devices for controlling transmission power. Various embodiments of the present disclosure can be beneficial for effectively canceling / reducing inter-subband interference, improving resource utilization efficiency, and improving the performance of wireless communication.

[0005] In one embodiment, the present disclosure describes a method for wireless communication. The method includes: performing transmission power control for uplink (UL) transmission by user equipment (UE) through the following steps: receiving a message corresponding to the transmission power control by the UE; determining a power control parameter by the UE according to the message; and sending the UL transmission by the UE using the transmission power according to the power control parameter.

[0006] In one embodiment, the present disclosure describes a method for wireless communication. The method includes: configuring, by a base station, transmission power control for uplink (UL) transmission by the following steps: sending, by the base station, a message corresponding to the transmission power control to a user equipment (UE), so that the UE is configured to determine a power control parameter according to the message; and receiving, by the base station, a UL transmission from the UE using the transmission power according to the power control parameter.

[0007] In some other embodiments, an apparatus for wireless communication may include a memory storing instructions and a processing circuit in communication with the memory. When the processing circuit executes the instructions, the processing circuit is configured to implement the above method.

[0008] In some other embodiments, a device for wireless communication may include a memory storing instructions and a processing circuit in communication with the memory. When the processing circuit executes the instructions, the processing circuit is configured to implement the above method.

[0009] In some other embodiments, a computer-readable medium includes instructions that, when executed by a computer, cause the computer to implement the above method.

[0010] The above and other aspects and embodiments thereof are described in more detail in the drawings, the description and the claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1A An example of a wireless communication system including a radio network node and one or more user equipments is shown.

[0012] Figure 1B A schematic diagram showing cross-link interference is shown.

[0013] Figure 2 An example of a network node is shown.

[0014] Figure 3 An example of a user device is shown.

[0015] Figure 4 Schematic diagram showing the effect of a roll-off filter.

[0016] Figure 5A A flow chart of a method for wireless communication is shown.

[0017] Figure 5B A flow chart of another method for wireless communication is shown.

[0018] Figure 6 A schematic diagram of a non-limiting embodiment for wireless communication is shown.

[0019] Figure 7 A schematic diagram of another non-limiting embodiment for wireless communication is shown.

[0020] Figure 8 A schematic diagram of another non-limiting embodiment for wireless communication is shown.

[0021] Fig. 9 A schematic diagram of another non-limiting embodiment for wireless communication is shown. DETAILED DESCRIPTION

[0022] The present disclosure will now be described in detail below with reference to the accompanying drawings, which form a part of the present disclosure and show specific examples of embodiments by way of illustration. However, it is noted that the present disclosure can be embodied in a variety of different forms, and thus the subject matter covered or claimed is intended to be interpreted as not being limited to any of the embodiments set forth below.

[0023] Throughout the specification and claims, terms may have nuanced meanings that are suggested or implied in the context beyond the explicitly stated meanings. Similarly, the phrases "in one embodiment" or "in some embodiments" used herein do not necessarily refer to the same embodiment, and the phrases "in another embodiment" or "in other embodiments" used herein do not necessarily refer to different embodiments. The phrases "in one embodiment" or "in some embodiments" used herein do not necessarily refer to the same embodiment, and the phrases "in another embodiment" or "in other embodiments" used herein do not necessarily refer to different embodiments. For example, it is intended that the claimed subject matter includes, in whole or in part, a combination of exemplary embodiments or embodiments.

[0024] Typically, terms may be understood at least in part from usage in context. For example, terms such as "and", "or" or "and / or" used herein may include various meanings that may depend at least in part on the context in which the terms are used. Typically, "or" if used for an association list (such as A, B or C) is intended to represent A, B and C (here used for inclusive meanings), and A, B or C (here used for exclusive meanings). In addition, depending at least in part on the context, the terms "one or more" or "at least one" used herein may be used to describe any feature, structure or characteristic in a singular sense, or may be used to describe a combination of features, structures or characteristics in a plural sense. Similarly, depending at least in part on the context, terms such as "a", "an" or "the" may also be understood to convey singular usage or to convey plural usage. In addition, the term "based on" or "determined by..." may be understood to not necessarily be intended to convey a set of factors that are exclusive, but, also at least in part on the context, may allow for the presence of additional factors that are not necessarily explicitly described.

[0025] The present disclosure describes methods and apparatus for controlling transmission power.

[0026] Next generation (NG) (or fifth generation (5G)) wireless communications can provide a range of capabilities from fast downloads to support for real-time low-latency communications. Next generation (NG) mobile communication systems are moving the world towards an increasingly connected and networked society. To meet increasing demands, the 4th Generation mobile communication technology (4G) Long-Term Evolution (LTE) or Advanced LTE (LTE-Advance, LTE-A) and 5G mobile communication technology are developing support for the following features: enhanced mobile broadband (eMBB), ultra-reliable low-latency communication (URLLC) and massive machine-type communication (mMTC). Full duplex is one of the features developed for 5G and future communication systems.

[0027] In some embodiments of the wireless communication system, time domain resources are divided between downlink and uplink in time division duplex (TDD). Allocating a limited duration for the uplink in TDD will result in reduced coverage, increased latency, and reduced capacity. As a possible enhancement to this limitation of traditional TDD operation, it may be worthwhile to study the feasibility of allowing downlink and uplink to exist simultaneously (i.e., full duplex, or more specifically, subband non-overlapping full duplex (SBFD)) on the base station side (e.g., gNB) within the traditional TDD frequency band. Both uplink and downlink may exist in different frequency domain resources of the same time domain resources.

[0028] For non-limiting examples, see Figure 1BFor the same cell under the base station, there are two different frequency resources with different frame structures (for example, for time slot 0, time slot 1, time slot 2, time slot 3 and time slot 4), one (161) is DDDSU and the other (162) is DSUUU, where D means "downlink", U means "uplink", and S means "flexible resource". These frame structures can be further updated according to dynamic scheduling or dynamic frame structure indication (for example, slot format indicator (SFI)). Then, during the middle three time intervals (for example, time slot 1, time slot 2 and time slot 3), the attributes between different frequency resources may be different. For different UEs, the base station can simultaneously transmit a physical downlink shared channel (PDSCH) and receive a physical uplink shared channel (PUSCH), for example, the base station transmits PDSCH to one UE (UE1) in time slot 2 and simultaneously receives PUSCH from another UE (UE2). In these cases, cross-link interference may exist for time-frequency resources with frame structures of different attributes. Specifically, the downlink transmission of a gNB (i.e., Figure 1B PDSCH in the uplink may interfere with uplink reception (i.e. Figure 1B In SBFD, this interference can be called gNB self-interference.

[0029] In some embodiments of the wireless communication system, time division duplex (TDD) is used to divide time domain resources between downlink and uplink. Allocating a limited duration for the uplink with TDD will result in reduced coverage, increased latency, and reduced capacity. As a possible enhancement to this limitation of traditional TDD operation, it may be worthwhile to implement the feasibility of allowing downlink and uplink to exist simultaneously in adjacent cells. Then, the uplink transmission may also be interfered with by downlink transmissions in adjacent cells. This can be referred to as inter-gNB co-channel interference. There may be both uplink and downlink in adjacent frequency domain resources of the same time domain resources. Then, the interfering uplink transmission may also be interfered with by downlink transmissions in adjacent channels from adjacent cells. This interference may also be referred to as inter-gNB adjacent channel interference.

[0030] The present disclosure describes methods and apparatus for, for example, controlling transmission power, addressing at least one of the issues / problems associated with cross-link interference, and / or enhancing uplink transmission performance in the presence of gNB self-interference or inter-gNB interference.

[0031] Figure 1AA wireless communication system 100 is shown including a core network (CN) 110, a radio access network (RAN) 130, and one or more user equipment (UE) (152, 154, and 156). The RAN 130 may include a wireless network base station, or a NG radio access network (NG-RAN) base station or node, which may include a node B (NB, e.g., gNB) in a mobile telecommunication environment. In one embodiment, the core network 110 may include a 5G core network (5GC), and the interface 125 may include a new generation (NG) interface.

[0032] Reference Figure 1A , the first UE 152 may wirelessly receive one or more downlink communications 142 from the RAN 130 and wirelessly send one or more uplink communications 141 to the RAN 130. Similarly, the second UE 154 may wirelessly receive downlink communications 144 from the RAN 130 and wirelessly send uplink communications 143 to the RAN 130; and the third UE 156 may wirelessly receive downlink communications 146 from the RAN 130 and wirelessly send uplink communications 145 to the RAN 130. For example, but not limited to, the downlink communications may include a physical downlink shared channel (PDSCH) or a physical downlink control channel (PDCCH), and the uplink communications may include a physical uplink shared channel (PUSCH) or a physical uplink control channel (PUCCH).

[0033] Figure 2 An exemplary radio access network or wireless communication base station 200 is shown. The base station 200 may include wireless transmitting / receiving (Tx / Rx) circuitry 208 to send / receive communications with one or more UEs and / or one or more other base stations. The base station may also include network interface circuitry 209 (e.g., optical or wired interconnect, Ethernet and / or other data transmission media / protocols) to enable the base station to communicate with other base stations and / or a core network. The base station 200 may optionally include an input / output (I / O) interface 206 to communicate with an operator or the like.

[0034] The base station may also include system circuitry 204. System circuitry 204 may include (one or more) processors 221 and / or memory 222. Memory 222 may include an operating system 224, instructions 226, and parameters 228. Instructions 226 may be configured for one or more processors 124 to perform the functions of the base station. Parameters 228 may include parameters that support the execution of instructions 226. For example, the parameters may include network protocol settings, bandwidth parameters, radio frequency mapping allocations, and / or other parameters.

[0035] Figure 3 An exemplary user equipment (UE) 300 is shown. UE 300 may be a mobile device, such as a smart phone or a mobile communication module provided in a vehicle. UE 300 may include a communication interface 302, a system circuit 304, an input / output (I / O) interface 306, a display circuit 308, and a storage device 309. Display circuit 308 may include a user interface 310. System circuit 304 may include any combination of hardware, software, firmware, or other logic / circuits. System circuit 304 may be implemented, for example, with one or more systems on a chip (SoC), application specific integrated circuits (ASIC), discrete analog and digital circuits, and other circuits. System circuit 304 may be part of the implementation of any desired function in UE 300. In this regard, the system circuit 304 may include logic to facilitate operations such as: decoding and playing music and video (e.g., MP3, MP4, MPEG, AVI, FLAC, AC3, or WAV decoding and playback); running applications; accepting user input; saving and retrieving application data; establishing, maintaining, and terminating cellular phone calls or data connections (e.g., for Internet connections); establishing, maintaining, and terminating wireless network connections, Bluetooth connections, or other connections; and displaying relevant information on the user interface 310. The user interface 310 and the input / output (I / O) interface 306 may include a graphical user interface, a touch-sensitive display, tactile feedback or other tactile output, voice or facial recognition input, buttons, switches, speakers, and other user interface elements. Additional examples of the I / O interface 306 include microphones, video and still image cameras, temperature sensors, vibration sensors, rotation and orientation sensors, headphone and microphone input / output jacks, Universal Serial Bus (USB) connectors, memory card slots, radiation sensors (e.g., IR (infrared) sensors), and other types of inputs.

[0036] Reference Figure 3, the communication interface 302 may include radio frequency (RF) transmit (Tx) and receive (Rx) circuits 316 that process the transmission and reception of signals through one or more antennas 314. The communication interface 302 may include one or more transceivers. The transceiver may be a wireless transceiver that includes modulation / demodulation circuitry, a digital to analog converter (DAC), a shaping table, an analog to digital converter (ADC), a filter, a waveform shaper, a filter, a pre-amplifier, a power amplifier, and / or other logic for transmitting and receiving through one or more antennas or (for some devices) through a physical (e.g., wired) medium. The transmitted and received signals may follow any of a variety of formats, protocols, modulations (e.g., QPSK (Quadrature Phase Shift Keying), 16-QAM (Quadrature Amplitude Modulation), 64-QAM or 256-QAM), frequency channels, bit rates, and encodings. As a specific example, the communication interface 302 may include a transceiver that supports transmission and reception under 2G, 3G, BT (Bluetooth), WiFi (Wireless Fidelity), Universal Mobile Telecommunications System (UMTS), High Speed ​​Packet Access (HSPA)+, 4G / Long Term Evolution (LTE), and 5G standards. However, the techniques described below, whether from the 3rd Generation Partnership Project (3GPP), the GSM (Global System for Mobile Communications) Association, 3GPP2, the IEEE (Institute of Electrical and Electronics Engineers), or other partners or standards bodies, are applicable to other wireless communication technologies.

[0037] Reference Figure 3, the system circuit 304 may include one or more processors 321 and a memory 322. The memory 322 stores, for example, an operating system 324, instructions 326, and parameters 328. The processor 321 is configured to execute the instructions 326 to implement the desired functions of the UE 300. The parameters 328 may provide and specify configuration and operating options for the instructions 326. The memory 322 may also store any BT, WiFi, 3G, 4G, 5G, or other data that the UE 300 will send or has received through the communication interface 302. In various embodiments, the system power of the UE 300 may be supplied by a power storage device (such as a battery or a transformer).

[0038] The present disclosure describes several embodiments of methods and devices for controlling transmission power, which may be partially or completely implemented in the above Figure 2 and Figure 3 The method is implemented on a wireless network base station and / or a user equipment described in the embodiment.

[0039] In various embodiments, reference Figure 4 , the signal needs to be filtered before being transmitted through the air so that the signal can be limited to the desired frequency range. The desired frequency range can be the range between fB / 2 and f+B / 2 (410), where f is the center frequency and B is the bandwidth. Ideally, after filtering, there should be no leakage signal outside the desired frequency range. However, due to the limitations of technology and implementation complexity, there will always be leakage signals outside the desired frequency range. Typically, the output of the signal after filtering can be as follows Figure 4 As shown in the example in. For a desired signal with a center frequency of f and a bandwidth of B, the leakage signal within the bandwidth B adjacent to the desired signal (i.e., from f-3B / 2 to fB / 2 (420) and from f+B / 2 to f+3B / 2 (425)) is stronger than the leakage signal within the bandwidth B far away from the desired signal (e.g., from f-5B / 2 to f-3B / 2 (430) and from f+3B / 2 to f+5B / 2 (435)). At the same time, the leakage signal within the bandwidth B adjacent to the desired signal is more dynamic. The leakage signal can be an interference to the desired signal within the frequency resources from f-5B / 2 to fB / 2 and from f+B / 2 to f+5B / 2. This can be called a "roll-off filter".

[0040] At least due to the roll-off filter effect, uplink transmissions (such as PUSCH) in a UL subband may be interfered with by DL transmissions in adjacent DL subbands on one or both sides. This type of interference may be referred to as gNB self-interference or inter-subband interference.

[0041] The present disclosure describes multiple embodiments of methods and devices for controlling transmission power, addressing at least some of the issues / problems associated with the above-mentioned interference, wherein an uplink transmission power control mechanism can be enhanced to counteract such interference. In various embodiments, the uplink transmission power control mechanism can include at least one of the following: using an appropriate power control parameter set, introducing a power adjustment factor, and changing a maximum transmission power limit, etc.

[0042] In various embodiments, Figure 5A A flow chart of a method 500 for wireless communication is shown, the method 500 including performing, by a user equipment (UE), transmission power control for an uplink (UL) transmission. The method 500 may include some or all of the following steps: step 510, receiving, by the UE, a message corresponding to the transmission power control; step 520, determining, by the UE, a power control parameter based on the message; and / or step 530, sending, by the UE, a UL transmission using a transmission power based on the power control parameter.

[0043] In various embodiments, Figure 5B A flow chart of a method 550 for wireless communication is shown, the method 550 including configuring, by a base station, transmission power control for uplink (UL) transmission. The method 550 may include some or all of the following steps: step 560, the base station sending a message corresponding to the transmission power control to a user equipment (UE), so that the UE is configured to determine a power control parameter according to the message; and / or step 570, the base station receiving a UL transmission from the UE using a transmission power according to the power control parameter.

[0044] In some embodiments, in addition to a portion or combination of the described embodiments / examples, the power control parameter includes one of the following items: a power control parameter set, a power adjustment factor, or a maximum power limit; and / or the power control parameter set includes at least one of the following items: an open-loop power control parameter set or a closed-loop power control parameter set.

[0045] In some embodiments, in addition to a portion or combination of the described embodiments / examples, the UL transmission includes a physical uplink shared channel (PUSCH) in the UL resources.

[0046] In some embodiments, in addition to a portion or combination of the described embodiments / examples, the message corresponding to the transmission power control includes at least one of the following items: a radio resource control (RRC) message, a medium access control (MAC) layer signaling, or a downlink control information (DCI) message.

[0047] In some embodiments, in addition to a portion or combination of the described embodiments / examples, the message includes at least one configuration parameter, the at least one configuration parameter including at least one of the following items: downlink (DL) sub-band bandwidth, DL transmission power, frequency offset, adjacent channel leakage power ratio (ACLR), adjacent channel selectivity (ACS), adjacent channel interference power ratio (ACIR), the amount of interference leaked from the reference point, the amount of interference reduced per frequency unit, and / or the ratio between the frequency resources of the UL transmission and the frequency resources of the UL sub-band.

[0048] In some implementations, in addition to a portion or combination of the described implementations / examples, the UE determines a power control parameter according to at least one configuration parameter in the message.

[0049] In some embodiments, in addition to a portion or combination of the described embodiments / examples, the UE derives the amount of interference for UL transmission based on at least one configuration parameter in the message; and / or the UE determines a power control parameter based on the amount of interference or interference level for UL transmission.

[0050] In some embodiments, in addition to a portion or combination of the described embodiments / examples, when the UE derives the amount of interference or interference level for UL transmission based on at least one configuration parameter in the message: the UE derives the amount of interference or interference level for UL transmission based on the following items: at least one interference amount at at least one reference point, at least one interference reduction per frequency unit corresponding to at least one reference point, and at least one offset frequency unit between the UL transmission and at least one reference point.

[0051] In some embodiments, in addition to a portion or combination of the described embodiments / examples, at least one offset frequency unit is determined based on at least one reference point and one of the following items: the frequency of the lowest resource block (RB) of UL transmission, the frequency of the lowest resource element (RE) of UL transmission, the frequency of the highest RB of UL transmission, the frequency of the highest RE of UL transmission, the frequency of the center RB of UL transmission, and / or the frequency of the center RE of UL transmission.

[0052] In some embodiments, in addition to a portion or combination of the described embodiments / examples, the UE determines more than one reference RB or reference RE in UL transmission, and determines the maximum interference amount in the more than one reference RB or reference RE as the interference amount for UL transmission.

[0053] In some embodiments, in addition to a portion or combination of the described embodiments / examples, when the UE determines a power control parameter based on the amount of interference for UL transmission: the UE compares the amount of interference for UL transmission with at least one threshold to determine the power control parameter based on the comparison result.

[0054] In some embodiments, in addition to a portion or combination of the described embodiments / examples, when the UE determines a power control parameter based on the amount of interference for UL transmission: the UE obtains N thresholds arranged in ascending order and (N+1) values ​​of the power control parameter corresponding to the (N+1) segments defined by the N thresholds, respectively, where N is a positive integer; in response to the amount of interference for UL transmission being less than a first threshold among the N thresholds, the UE determines a first value among the (N+1) values ​​of the power control parameter; in response to the amount of interference for UL transmission being equal to or greater than an nth threshold among the N thresholds and less than an (n+1)th threshold among the N thresholds, the UE determines an (n+1)th value among the (N+1) values ​​of the power control parameter, where n is a positive integer less than N; and / or in response to the amount of interference for UL transmission being equal to or greater than an Nth value threshold among the N thresholds, the UE determines an (N+1)th value among the (N+1) values ​​of the power control parameter.

[0055] In some implementations, in addition to a portion or combination of the described implementations / embodiments, a message corresponding to transmission power control includes a mapping between multiple resource sets and multiple power control parameters.

[0056] In some implementations, except for a portion or combination of the described implementations / examples, the mapping is a one-to-one mapping.

[0057] In some implementations, in addition to a portion or combination of the described implementations / examples, the UE determines a resource set in which the UL transmission is located; and / or the UE determines a power control parameter corresponding to the resource set based on the mapping.

[0058] In some embodiments, in addition to a portion or combination of the described embodiments / examples, the UE determines more than one resource sets where the UL transmission is located; and / or the UE determines a power control parameter corresponding to a resource set in more than one resource set based on the mapping, wherein the resource set is one of the following items: a resource set with the highest overlap ratio with the UL transmission, and / or a resource set corresponding to the maximum transmission power in more than one resource set.

[0059] In some implementations, in addition to a part or combination of the described implementations / embodiments, a message corresponding to transmission power control includes a field indicating whether the UE adjusts the transmission power of UL transmission.

[0060] In some embodiments, in addition to a portion or combination of the described embodiments / examples, the message includes a DCI format or a random access response (RAR) UL grant; and / or the field includes a 1-bit field.

[0061] In some embodiments, in addition to a portion or combination of the described embodiments / examples, in response to the field indicating that the UE adjusts the transmission power of the UL transmission, the UE determines the transmission power of the UL transmission based on at least one of the following: a power adjustment factor, a power control parameter set, or a maximum power limit.

[0062] In some embodiments, in addition to a portion or combination of the described embodiments / examples, a message corresponding to the transmission power control includes at least one indication field, wherein each indication field of the at least one indication field indicates that the resource group corresponding to the indication field is mapped with a transmission power adjustment.

[0063] In some implementations, in addition to a portion or combination of the described implementations / examples, the transmission power adjustment includes at least one of the following: a power adjustment factor, a power control parameter set, or a maximum power limit.

[0064] In some embodiments, in addition to a portion or combination of the described embodiments / examples, the UE determines the resource group where the UL transmission is located; and / or the UE determines the transmission power adjustment corresponding to the mapping of the resource group indicated by the corresponding indication field.

[0065] In some embodiments, in addition to a portion or combination of the described embodiments / examples, the UE determines more than one resource groups where the UL transmission is located; and / or the UE determines a transmission power adjustment corresponding to a mapping of a resource group in more than one resource groups indicated by a corresponding indication field, wherein the resource group is one of the following items: a resource group in more than one resource groups having the highest overlap ratio with the UL transmission and / or a resource group corresponding to the maximum transmission power.

[0066] Example 1

[0067] The present disclosure describes non-limiting embodiments of uplink transmission power control for counteracting inter-subband interference. In various embodiments, one or more power adjustment factors may be introduced to further adjust the UL transmission power obtained based on the existing power control mechanism. In this way, the impact of inter-subband interference is reduced. Specifically, the power adjustment factor may be determined semi-statically or dynamically.

[0068] For non-limiting examples, see Figure 6 , the inter-subband interference can be described / represented by a function. For example, the interference value at one or more reference points (620 and / or 630) (e.g., the spectrum edge of the DL subband, i.e., A1 and / or A2) and the corresponding one or more frequency offsets (N) between the target point and the reference point can be used to describe / represent the inter-subband interference. offset1 and / or N offset2 ) to determine the interference value at the target point (610) (e.g., A0).

[0069] In some embodiments, the interference value at the reference point is used as the initial value, and linear attenuation may be used for the frequency offset. Either the target point or the reference point may be the center or boundary of a resource block (RB) or a resource element (RE).

[0070] Reference Figure 6 , for the inter-subband interference generated by the low-frequency DL subband (e.g., DL subband 1 (671)) to the UL subband (672), the amount of interference leaked from the low-frequency DL subband at the reference point A1 (e.g., the boundary of the low-frequency DL subband / UL subband, or the upper boundary of the low-frequency DL subband, or the lower boundary of the UL subband) is I1 decibel milliwatts (dBm). This amount of interference is reduced by k1 decibels (dB) per frequency unit. At the target frequency point A0 (N units away from the reference point A1), the amount of interference leaked from the low-frequency DL subband is I1 decibel milliwatts (dBm). offset1 The interference amount at a frequency unit) can be I low =I1-k1×N offset1 .

[0071] Similarly, the interference caused by the high frequency DL sub-band (673) to the UL sub-band can be I high =I2-k2×Noffset2 I2 is the interference leaked from the high frequency DL subband at the reference point (eg, the boundary of the high frequency DL subband / UL subband, or the lower boundary of the high frequency DL subband, or the upper boundary of the UL subband), N offset2 is the number of frequency units between the target frequency point A0 and the reference point A2, and k2 is the amount of interference reduced in dB per frequency unit. In some embodiments, depending on the frequency of the sub-band and the operating conditions / environment, I1 and I2 may be different and not necessarily the same. k2 and k2 may be different and not necessarily the same. Then, at the target frequency point, the total amount of inter-sub-band interference from both sides may be I total =I low +I high .

[0072] In some embodiments, the power adjustment factor (O) and the total amount of inter-subband interference I can be defined by a threshold set of the total amount of inter-subband interference and a power adjustment factor set. total Table 1 (or Table 2) shows a non-limiting example with two thresholds and three power adjustment factors. total The calculation and relationship of , the UE can obtain the corresponding power adjustment factor O. In order to calculate I total , the gNB needs to provide the following parameters to the UE: I1, k1, I2 and k2.

[0073] Table 1.I total An example of the relationship between

[0074] <![CDATA[I total (dBm)]]> O(dB) <![CDATA[I total <I threshold1 ]]> 2 <![CDATA[I threshold1 ≤I total <I threshold2 ]]> 4 <![CDATA[I threshold2 ≤I total ]]> 6

[0075] Table 2.I total Another example of the relationship between

[0076] <![CDATA[I total (dBm)]]> O(dB) <![CDATA[I total ≤I threshold1 ]]> 2 <![CDATA[I threshold1 <I total ≤I threshold2 ]]> 4 <![CDATA[I threshold2 <I total ]]> 6

[0077] In some embodiments, the power adjustment factor O may be determined by the maximum interference received on the uplink transmission. That is, the interference on each RB or each RE occupied by the uplink transmission (e.g., PUSCH scheduled by DCI, PUSCH scheduled by RAR UL grant, configuration grant PUSCH, PUCCH, Sounding Reference Signal (SRS), etc.) is calculated according to one of the methods described in the present disclosure, and then the maximum value is determined as I total , based on the I total A disadvantage of the above embodiment may be that the uplink transmission may occupy too many RBs or REs, and / or the value of I may be too large. totalIt may be too complex or time-consuming for the UE.

[0078] In some implementations, for simplicity, some reference RBs or some reference REs in the uplink transmission may be selected as the reference RBs or REs for I total The target frequency point for calculation: for example, the lowest RB or lowest RE for uplink transmission, the highest RB or highest RE for uplink transmission, or the center RB or center RE for uplink transmission. Any one of the above reference RBs or reference REs can be defined as the target frequency point. In some embodiments, multiple reference RBs or multiple reference REs can be defined as the target frequency point. total The reference point is calculated and the maximum value is determined as the final I used to determine the value of O total .

[0079] In some embodiments, there may be other parameters / functions for describing inter-subband interference. At least one of the parameters (e.g., I1, k1, I2, and k2) used for inter-subband interference calculation may be determined based on one or a combination of the other parameters / functions. For example, some parameters / functions (e.g., DL subband bandwidth, DL transmission power, frequency offset between DL transmission and UL subband / uplink transmission, ACLR / ACS / ACIR, filter-related parameters, and antenna isolation, etc.) may be related to (or affect) the amount of interference. The relevant information may be provided from the gNB to the UE via RRC signaling, MAC layer signaling, or DCI.

[0080] Various embodiments provide a method for uplink transmission power control for counteracting inter-subband interference. The method can effectively counteract inter-subband interference and flexibly meet the requirements of coverage enhancement and capacity increase.

[0081] Example 2

[0082] This disclosure describes another set of non-limiting embodiments of uplink transmission power control for counteracting inter-subband interference. In various embodiments, it is possible to define I totaland a power control parameter set. The power control parameter set includes an open-loop power control parameter (e.g., P0, alpha) or a closed-loop power control parameter (e.g., a transmission power control (TPC) table). In some embodiments, P0 represents the target receive power at the gNB side; and alpha represents the compensation coefficient for the path loss. The UE can determine the transmission power of the uplink transmission based on the path loss, P0, and alpha from its downlink measurement. In some embodiments, the closed-loop power control parameter can be used to further adjust the uplink transmission power, for example, to increase or decrease the power by some dB according to the TPC command. More specifically, in some embodiments, a TPC table with four rows is defined, and each row includes a power adjustment amount, for example, a value among -1, 0, 1, 3 dB. Then, a TPC command field with 2 bits is used (as an index) to indicate a row in the TPC table, and the corresponding value of the power adjustment amount can be used to adjust the power of the uplink transmission.

[0083] In some embodiments, I may be defined by a set of thresholds for the total amount of inter-subband interference and a set of open-loop power control parameter sets. total For a non-limiting example, referring to Table 3, two thresholds and three open-loop power control parameter sets are used to define I total In this example, N (for example, N=3) open-loop power control parameter sets are defined, namely, {P0, alpha}#1, {P0, alpha}#2, and {P0, alpha}#3; and N-1 thresholds are defined, namely, I threshold1 and I threshold2 . In response to I total threshold1 , {P0, alpha}#1 can be used to determine the uplink transmission power. threshold1 ≤I total threshold2 , {P0, alpha}#2 can be used to determine the uplink transmission power. threshold2 ≤I total , {P0,alpha}#3 can be used to determine the uplink transmission power.

[0084] For another non-limiting example, referring to Table 4, two thresholds and three open-loop power control parameter sets are used to define I total ​​In this example, N (for example, N=3) open-loop power control parameter sets are defined, namely, {P0, alpha}#1, {P0, alpha}#2, and {P0, alpha}#3; and N-1 thresholds are defined, namely, I threshold1 and I threshold2 . In response to I total ≤I threshold1 , {P0, alpha}#1 can be used to determine the uplink transmission power. threshold1 total ≤I threshold2 , {P0, alpha}#2 can be used to determine the uplink transmission power. threshold2 total , {P0,alpha}#3 can be used to determine the uplink transmission power.

[0085] Table 3.I total An example of the relationship between the open-loop power control parameter set

[0086]

[0087] Table 4.I total Another example of the relationship between the open loop power control parameter set

[0088]

[0089] In some embodiments, I may be defined by a set of thresholds for the total amount of inter-subband interference and a set of closed-loop power control parameter sets. total The relationship between I and the closed-loop power control parameter set. For a non-limiting example, referring to Table 5, I is defined total In this example, N (eg, N=3) TPC tables are defined, namely, TPC table-1, TPC table-2, and TPC table-3; and N-1 thresholds are defined, namely, I threshold1 and I threshold2 . In response to I total threshold1 , the uplink transmission power can be determined using TPC Table-1. threshold1 ≤I total threshold2 , the uplink transmission power can be determined using TPC Table-2. threshold2 ≤I total , TPC Table-3 can be used to determine the uplink transmission power.

[0090] For another non-limiting example, referring to Table 6, I is defined​​​​total In this example, N (for example, N=3) TPC tables are defined, namely, TPC table-1, TPC table-2, and TPC table-3; and N-1 thresholds are defined, namely, I threshold1 and I threshold2 . In response to I total ≤I threshold1 , the uplink transmission power can be determined using TPC Table-1. threshold1 total ≤I threshold2 , the uplink transmission power can be determined using TPC Table-2. threshold2 total , TPC Table-3 can be used to determine the uplink transmission power.

[0091] Table 5.I total An example of the relationship between the closed-loop power control parameter set

[0092]

[0093]

[0094] Table 6.I total Another example of the relationship between the closed-loop power control parameter set

[0095]

[0096] Various embodiments provide a method for uplink transmission power control for counteracting inter-subband interference. The method can effectively counteract inter-subband interference and flexibly meet the requirements of coverage enhancement and capacity increase.

[0097] Example 3

[0098] The present disclosure describes another non-limiting set of embodiments of uplink transmission power control for counteracting inter-subband interference. In various embodiments, multiple resource sets can be configured through RRC signaling, and each resource set is mapped with a power control parameter set. The power control parameter set includes an open-loop power control parameter (e.g., P0, alpha) or a closed-loop power control parameter (e.g., TPC table).

[0099] For non-limiting examples, see Figure 7 ​​, three resource sets (710, 720 and 730) are defined / configured through RRC signaling. Referring to Table 7, the relationship between resource sets and open-loop power control parameter sets is defined. In this example, N (e.g., N=3) open-loop power control parameter sets are defined, namely, {P0,alpha}#1, {P0,alpha}#2 and {P0,alpha}#3; and three resource sets (i.e., the first resource set, the second resource set and the third resource set) are defined accordingly. When the uplink transmission is located in the first resource set, {P0,alpha}#1 can be used to determine the uplink transmission power. When the uplink transmission is located in the second resource set, {P0,alpha}#2 can be used to determine the uplink transmission power. In addition, when the uplink transmission is located in the third resource set, {P0,alpha}#3 can be used to determine the uplink transmission power.

[0100] In some implementations, when uplink transmission overlaps with at least two resource sets, the transmission power may be calculated according to the two power control parameter sets, respectively, and a larger transmission power may be used for uplink transmission.

[0101] In some implementations, when an uplink transmission overlaps with at least two resource sets, the power of the uplink transmission may be determined using a power control parameter set corresponding to a resource set having a higher resource overlap ratio.

[0102] Table 7. Example of relationship between resource sets and open-loop power control parameter sets

[0103] Resource Sets Power Control Parameter Set First resource set {P0,alpha}#1 Second resource set {P0,alpha}#2 Third Resource Set {P0,alpha}#3

[0104] In some embodiments, similarly, a relationship between a resource set and a closed-loop power control parameter set may be defined. When an uplink transmission is within a resource set, the transmission power of the uplink transmission may be determined according to the corresponding closed-loop power control parameter set. When an uplink transmission overlaps with at least two resource sets, the transmission power may be calculated according to the two power control parameter sets, respectively, and the larger transmission power will be used for the uplink transmission.

[0105] Various embodiments provide a method for uplink transmission power control for counteracting inter-subband interference. The method can effectively counteract inter-subband interference and flexibly meet the requirements of coverage enhancement and capacity increase.

[0106] Example 4

[0107] The present disclosure describes another set of non-limiting embodiments of uplink transmission power control for counteracting inter-subband interference. In various embodiments, an indication field using a DCI format or a random access response (RAR) UL grant may be introduced to indicate whether an additional power adjustment factor is used, or whether a different power control parameter set is used, or whether a different maximum transmission power limit is used to determine the final transmission power of the uplink transmission scheduled by the DCI format or RAR UL grant. The additional power adjustment factor or the different power control parameter set or the different maximum transmission power limit is used to determine the transmission power to counteract inter-subband interference.

[0108] For non-limiting examples, see Figure 8 , two PDSCHs (811 and 812) are transmitted in the DL subband (810): the first PDSCH (PDSCH 1, 811) is located in symbol #4 to symbol #6, and the second PDSCH (PDSCH 2, 812) is located in symbol #10 to symbol #13. For uplink transmissions in the UL subband (820) on symbol #4 to symbol #6, symbol #10 to symbol #13, there may be additional inter-subband interference.

[0109] Two PUSCHs (821 and 822) may be scheduled in the UL subband (820). For the second PUSCH (e.g., PUSCH 2 in symbol #11 to symbol #13) scheduled in those symbols in the UL subband, the second PUSCH may suffer from inter-subband interference from the PDSCH (or PDSCH 2) in the DL subband, so the indication field may indicate that an additional power adjustment factor or a different power control parameter set is used to determine the transmission power to offset the inter-subband interference. For the first PUSCH (e.g., PUSCH 1 in symbol #7 to symbol #9) scheduled outside those symbols, there may be no inter-subband interference, so the indication field may indicate that the transmission power is determined according to a conventional power control parameter set.

[0110] Various embodiments provide a method for uplink transmission power control for counteracting inter-subband interference. The method can effectively counteract inter-subband interference and flexibly meet the requirements of coverage enhancement and capacity increase.

[0111] Example 5

[0112] The present disclosure describes another non-limiting set of embodiments of uplink transmission power control for counteracting inter-subband interference. In various embodiments, a group common DCI is defined, wherein the group common DCI includes one or more resource indication fields. Each resource indication field indicates a group of resources, and each group of resources is mapped with a set of power control parameter sets or power adjustment factors or maximum transmission power limits.

[0113] In some embodiments, the UL subband can be divided into two groups of resources in the time domain. One group is symbols that require further power adjustment to offset inter-subband interference, and the other group is symbols that do not require further power adjustment. This can be indicated in the form of a bitmap. For example, a reference time-frequency resource can be defined, and the reference time-frequency resource can be further divided into some time-frequency resource subblocks, and each bit in the bitmap is mapped to a time-frequency resource subblock. In other words, the number of bits in the bitmap is equal to the number of subblocks in the reference time-frequency resource.

[0114] In some embodiments, a predefined value of the bit (e.g., "1") indicates that when the uplink transmission at least partially overlaps with the corresponding sub-block, the transmission power of the uplink transmission should be further adjusted. On the other hand, when the bit in the bitmap has another value (e.g., "0"), when the uplink transmission only overlaps with the corresponding sub-block, the transmission power of the uplink transmission should not be further adjusted.

[0115] For non-limiting examples, see Fig. 9 , the reference time-frequency resource is determined as the time slot in the time domain and the bandwidth of the UL subband in the frequency. The group common DCI contains a resource indication field, which is a bitmap with 14 bits and is used to indicate the attributes of each symbol within the reference time-frequency resource. For example, two PDSCHs (911 and 912) are sent in the DL subband (910): the first PDSCH (PDSCH 1, 911) is located in symbol #4 to symbol #6, and the second PDSCH (PDSCH 2, 912) is located in symbol #10 to symbol #13. For uplink transmissions on symbols #4 to symbol #6 and symbol #10 to symbol #13 in the UL subband (820), there may be additional inter-subband interference. Therefore, the bitmap can be set to "00011100011110", where "1" indicates that the power of the uplink transmission overlapping with the corresponding subblock needs to be further adjusted.

[0116] In another embodiment, more than one resource indication field is included in the group common DCI. Each resource indication field indicates a group of resources and corresponds to a power control parameter set. For example, referring to Fig. 9Different DL transmissions in the DL subband may generate different interferences to the uplink transmissions in the UL subband. For example, a DL transmission (e.g., PDSCH 1, 911) may generate higher interferences according to at least one of the following factors: the DL transmission is closer to the UL subband in the frequency domain, or the DL transmission has a wider bandwidth, or the transmission power of the DL transmission is larger, etc. The power of the uplink transmission on the same symbol of PDSCH 1 requires a higher power adjustment amount. On the other hand, the uplink transmission on the symbol corresponding to PDSCH 2 (912) can adjust a relatively small power. In the case of uplink transmissions only on other symbols without DL transmissions, no additional power adjustment is required.

[0117] In some implementations, referring to Table 8, the group common DCI may include two resource indication fields. It is generally agreed that the first resource indication field corresponds to the first power adjustment value set, and the second resource indication field corresponds to the second power adjustment value set, occupying 14 bits.

[0118] In some implementations, for example, when an uplink transmission overlaps with more than one resource group, the UE may calculate the uplink transmission power according to different power control parameters respectively, and may use the highest power for the uplink transmission.

[0119] In some embodiments, for example, when an uplink transmission overlaps with more than one resource group, the UE may calculate the uplink transmission power according to different power control parameters, respectively, and may use the power control parameter set corresponding to the resource group with a higher resource overlap ratio to determine the power of the uplink transmission. For the non-limiting example shown in FIG. 9 , the uplink transmission (i.e., PUSCH, 921) overlaps with the first resource group by one symbol, and the uplink transmission overlaps with the second resource group by two symbols. Therefore, the power control parameter set corresponding to the second resource group is used to determine the power of the uplink transmission.

[0120] Table 8 Example of the relationship between the resource indicated by the RI (resource indication) field and the power control parameter set

[0121]

[0122] Various embodiments provide a method for uplink transmission power control for counteracting inter-subband interference. The method can effectively counteract inter-subband interference and flexibly meet the requirements of coverage enhancement and capacity increase.

[0123] In some embodiments, measurements may be used to obtain the amount of interference.

[0124] In some embodiments, the network may configure multiple measurement objects for the UE. The network may configure multiple channel state information (CSI) reports for the UE. The network may configure such that a measurement object may be associated with a CSI report. A measurement object may be associated with more than one CSI report and vice versa.

[0125] The configuration of the measurement object may include multiple resources. The UE may measure the configured resources to obtain a measurement result. More specifically, the UE may measure all multiple resources of the measurement object to obtain a measurement result. In addition, the UE may report the measurement result according to the configuration of the CSI report.

[0126] The configuration of the measurement object may include at least one of the following items: resources for received signal strength indicator (RSSI) measurement, resources for reference signal received power (RSRP) measurement, resources for signal to noise and interference ratio (SINR) measurement, resources for reference signal received quality (RSRQ) measurement, resources for reference signal-signal to noise and interference ratio (RS-SINR) measurement, resources for CSI measurement, and / or resources for channel quality indicator (CQI) measurement.

[0127] The resource used for measurement may be a reference signal or a physical resource. The reference signal may include at least one of the following items: SRS, Synchronization Signal Block (SSB) and / or Channel State Information-Reference Signal (CSI-RS).

[0128] The configuration of the reference signal may include at least one of the following items: time domain resources, frequency domain resources, number of ports, transmission comb, resource type, number of repetitions, sequence index, and / or spatial relationship information, etc. The time domain resources may include at least one of one or more occupied symbols and one or more occupied time slots (e.g., time slot index, time slot offset and period). The frequency domain resources may include at least one of the following items: starting physical resource block (PRB), bandwidth, RE occupied in RB, and / or frequency hopping, etc. The transmission comb may include at least one of the following items: comb offset and cyclic shift and / or comb number. In addition, the configuration of the reference signal may include a serving cell, a bandwidth part (Bandwidth Part, BWP) index and / or a subcarrier spacing.

[0129] The configuration of physical resources may include at least one of the following items: time domain resources, frequency domain resources and / or serving cells. Multiple physical resources may be in different serving cells. Multiple reference signals may be in different serving cells.

[0130] The resources used for measurement may be periodic resources, semi-permanent resources, or non-periodic resources. Periodic resources may occur periodically after configuration. Semi-permanent resources may be activated or deactivated by a medium access control element (MAC CE). Semi-permanent resources may occur periodically after activation until they are deactivated by MAC CE. MAC CE may include at least one of the following items: measurement object information (e.g., measurement object index), serving cell information (e.g., serving cell index), resource type (e.g., reference signal or physical resource), and / or resource information indicating which resource is activated or deactivated (e.g., resource index). That is, the information bit in MAC CE may indicate at least one of the following items: measurement object index, serving cell index, resource type, and / or resource index. For example, the configured resources in the measurement object include SRS and physical resources for RSSI. Then, an information bit with a value of "0" may indicate SRS, and an information bit with a value of "1" may indicate a physical resource for RSSI. In addition, MAC CE may include a field for indicating activation or deactivation. For example, a field with a value of "1" may indicate that the indicated resource is activated, while a field with a value of "0" may indicate that the indicated resource is deactivated.

[0131] Aperiodic resources may be triggered by downlink control information (DCI). The network may configure a time offset for each of a plurality of resources (e.g., a reference signal or a physical resource). The time offset may be between a time slot (or other time unit) containing a DCI that triggers the resource (e.g., a reference signal or a physical resource) and a time slot (or other time unit) in which the resource (e.g., a reference signal or a physical resource) is transmitted. DCI may trigger one or more of a plurality of resources of a measurement object. For example, a measurement object may include 4 resources. The network may configure the time offset for a first resource, a second resource, a third resource, and a fourth resource to be 3 time slots, 6 time slots, 4 time slots, and 3 time slots, respectively. When a DCI that triggers a resource is sent on time slot 1, the first resource, the second resource, the third resource, and the fourth resource triggered by the DCI are sent on time slot 4, time slot 7, time slot 5, and time slot 4, respectively.

[0132] In some embodiments, the network may configure multiple trigger states for the UE. The trigger state may be associated with the CSI report. When the DCI indicates a trigger state, the CSI report associated with the trigger state is triggered. The trigger state may also indicate one or more resources of the multiple resources of the measurement object. The UE may measure the resources indicated by the trigger state to obtain a measurement result, and report the measurement result by using the triggered CSI report.

[0133] For CSI reporting, the network may configure at least one of the following items: reporting type, PUCCH resources, reporting amount, reported subbands, number of reported resources and / or number of reported serving cells, etc.

[0134] The reporting type of the CSI report may include periodic reporting, semi-persistent reporting on PUSCH, semi-persistent reporting on PUCCH, and / or aperiodic reporting.

[0135] The configured PUCCH resources may be used to carry CSI information of the CSI report.For periodic reporting or semi-persistent reporting, the network may configure at least one of the period and / or the offset.

[0136] The reporting amount may include at least one of the following items: L1 (Layer 1)-RSRP, SRS-RSRP, RSSI, RSRQ and / or SINR. The UE may report the corresponding measurement result. For example, the configured reporting amount is SRS-RSRP. The UE measures the configured resources and obtains RSRP. Then, the UE reports the obtained RSRP for the CSI report.

[0137] A BWP or carrier may include multiple subbands. Each subband may include multiple RBs. The reported subbands may indicate for which subbands the UE may report CSI.

[0138] In some embodiments, the network may configure the total number of resources reported by the UE for CSI reporting. For example, the number of reported resources is N. Then, the UE may report measurement results of N resources among multiple resources of the associated measurement object.

[0139] In some embodiments, the network may configure the total number of resources reported by the UE for each serving cell for CSI reporting. For example, the number of resources reported per cell is N. Then, for each serving cell, the UE may report measurement results of N resources among multiple resources of the associated measurement object.

[0140] The number of serving cells may indicate the total number of serving cells reported by the UE for this CSI report.

[0141] In addition, the network may be configured so that the UE reports multiple highest measurement results or lowest measurement results. Based on the configuration of the measurement object, the UE may obtain multiple measurement results. For each of the multiple resources, there may be one or more measurement results. Among the multiple measurement results, the UE may report only some of the highest measurement results or the lowest measurement results. More specifically, the UE may report N highest measurement results or the lowest measurement results.

[0142] According to the configuration of the CSI report, the CSI information may include multiple measurement results. It may also include resource information corresponding to the measurement results. The resource information may include at least one of the following items: a resource index, a serving cell index of the resource, and a measurement object index of the resource. In some embodiments, the measurement results may be reported based on the difference. That is, the UE may report a specific measurement result for the CSI report. Then, other measurement results for the CSI report are reported based on the difference compared to the specific measurement result.

[0143] In some embodiments, the network may send a UL DCI (DCI for scheduling uplink transmission) scheduling multiple PUSCHs to the UE. The UL DCI may indicate the presence of a Hybrid Automatic Repeat Request Acknowledgement (HARQ-ACK) information bit (e.g., a type-1 codebook, a type-2 codebook, or a type-3 codebook) for the transmission. The UE may not determine the PUCCH resources carrying the HARQ-ACK information for the PDSCH scheduled by the DL DCI (DCI for scheduling downlink transmission). The UE may generate the HARQ-ACK information according to the indication of the UL DCI. If the multiple PUSCHs include two PUSCHs, the UE may multiplex the HARQ-ACK information bits in the second PUSCH of the multiple PUSCHs. If the multiple PUSCHs include more than two PUSCHs, the UE may multiplex the HARQ-ACK information bits in the second to last PUSCH of the multiple PUSCHs.

[0144] The present disclosure describes methods, apparatus, and computer-readable media for wireless communications. The present disclosure addresses the issue of cross-link interference. The methods, devices, and computer-readable media described in the present disclosure can improve the performance of wireless communications by controlling transmission power, thereby improving efficiency and overall performance. The methods, devices, and computer-readable media described in the present disclosure can improve the overall efficiency of wireless communication systems.

[0145] References to features, advantages, or similar language throughout the specification do not imply that all features and advantages that may be achieved with the present solution should be or are included in any single embodiment thereof. Rather, language referencing such features and advantages is understood to mean that a particular feature, advantage, or characteristic described in connection with an embodiment is included in at least one embodiment of the present solution. Thus, discussion of features and advantages and similar language throughout the specification may, but need not, refer to the same embodiment.

[0146] In addition, the features, advantages, and characteristics of the present solution may be combined in any suitable manner in one or more embodiments. Based on the description herein, one of ordinary skill in the relevant art will recognize that the present solution may be practiced without one or more of the specific features or advantages of a particular embodiment. In other cases, additional features and advantages may be recognized in certain embodiments that may not be present in all embodiments of the present solution.

Claims

1. A method for wireless communication, comprising: Transmission power control for uplink (UL) transmission is performed by a user equipment (UE) through the following steps: Receiving, by the UE, a message corresponding to the transmission power control; The UE determines a power control parameter according to the message; and The UL transmission is sent by the UE with a transmission power according to the power control parameter.

2. A method for wireless communication, comprising: The transmission power control for uplink (UL) transmission is configured by the base station through the following steps: The base station sends a message corresponding to the transmission power control to a user equipment (UE), so that the UE is configured to determine a power control parameter according to the message; The UL transmission is received by the base station from the UE using a transmission power according to the power control parameter.

3. The method according to any one of claims 1 to 2, wherein: The power control parameter includes one of the following: a power control parameter set, a power adjustment factor, or a maximum power limit; and The power control parameter set includes at least one of the following items: an open-loop power control parameter set, or a closed-loop power control parameter set.

4. The method according to any one of claims 1 to 2, wherein: The UL transmission includes a physical uplink shared channel (PUSCH) in UL resources.

5. The method according to any one of claims 1 to 4, wherein: The message corresponding to the transmission power control includes at least one of the following items: a radio resource control (RRC) message, a medium access control (MAC) layer signaling, or a downlink control information (DCI) message.

6. The method according to claim 5, wherein: The message includes at least one configuration parameter, and the at least one configuration parameter includes at least one of the following items: downlink (DL) subband bandwidth, DL transmission power, frequency offset, adjacent channel leakage power ratio (ACLR), adjacent channel selectivity (ACS), adjacent channel interference power ratio (ACIR), the amount of interference leaked from the reference point, the amount of interference reduced per frequency unit, or the ratio between the frequency resources of the UL transmission and the frequency resources of the UL subband.

7. The method according to claim 6, wherein: The UE determines the power control parameter according to the at least one configuration parameter in the message.

8. The method according to claim 6, wherein: The UE derives an amount of interference for the UL transmission based on the at least one configuration parameter in the message; and The UE determines the power control parameter according to an amount of interference for the UL transmission.

9. The method according to claim 8, wherein: When the UE derives an amount of interference for the UL transmission based on the at least one configuration parameter in the message: The UE derives an amount of interference for the UL transmission based on at least one amount of interference at at least one reference point, at least one amount of interference reduction per frequency unit corresponding to the at least one reference point, and at least one offset frequency unit between the UL transmission and the at least one reference point.

10. The method according to claim 9, wherein: The at least one offset frequency unit is determined based on the at least one reference point and one of: the frequency of the lowest resource block (RB) of the UL transmission, the frequency of the lowest resource element (RE) of the UL transmission, The frequency of the highest RB of the UL transmission, The frequency of the highest RE of the UL transmission, The frequency of the center RB of the UL transmission, or The frequency of the center RE of the UL transmission.

11. The method according to claim 9, wherein: The UE determines more than one reference RBs or reference REs in the UL transmission, and determines a maximum amount of interference in the more than one reference RBs or reference REs as an amount of interference for the UL transmission.

12. The method according to claim 8, wherein: When the UE determines the power control parameter according to the amount of interference for the UL transmission: The UE compares the interference amount for the UL transmission with at least one threshold to determine the power control parameter according to the comparison result.

13. The method according to claim 8, wherein: When the UE determines the power control parameter according to the amount of interference for the UL transmission: The UE obtains N thresholds arranged in ascending order and (N+1) values ​​of power control parameters respectively corresponding to (N+1) segments defined by the N thresholds, where N is a positive integer; In response to an amount of interference for the UL transmission being less than a first threshold among the N thresholds, the UE determines a first value among the (N+1) values ​​of the power control parameter; In response to an amount of interference for the UL transmission being equal to or greater than an nth threshold among the N thresholds and less than an (n+1)th threshold among the N thresholds, the UE determines an (n+1)th value among the (N+1)th values ​​of the power control parameter, where n is a positive integer and less than N; and In response to an amount of interference for the UL transmission being equal to or greater than an Nth threshold among the N thresholds, the UE determines an (N+1)th value among the (N+1) values ​​of the power control parameter.

14. The method according to any one of claims 1 to 4, wherein: The message corresponding to the transmission power control includes a mapping between a plurality of resource sets and a plurality of power control parameters.

15. The method according to claim 14, wherein: The mapping is a one-to-one mapping.

16. The method of claim 14, wherein: The UE determines a resource set where the UL transmission is located; and The UE determines a power control parameter corresponding to the resource set based on the mapping.

17. The method of claim 14, wherein: The UE determines more than one resource sets in which the UL transmission is located; and The UE determines a power control parameter corresponding to a resource set of the more than one resource sets based on the mapping, wherein the resource set is one of: The resource set with the highest overlap ratio with the UL transmission, or A resource set corresponding to the maximum transmission power among the more than one resource sets.

18. The method according to any one of claims 1 to 4, wherein: The message corresponding to the transmission power control includes a field indicating whether the UE adjusts the transmission power of the UL transmission.

19. The method of claim 18, wherein: The message includes a DCI format or a random access response (RAR) UL grant; and The field comprises a 1-bit field.

20. The method of claim 18, wherein: In response to the field indicating that the UE adjusts the transmission power of the UL transmission, the UE determines the transmission power of the UL transmission based on at least one of the following items: a power adjustment factor, a power control parameter set, or a maximum power limit.

21. The method according to any one of claims 1 to 4, wherein: The message corresponding to the transmission power control includes at least one indication field, wherein each indication field of the at least one indication field indicates that a resource group corresponding to the indication field is mapped with transmission power adjustment.

22. The method of claim 21, wherein: The transmission power adjustment includes at least one of the following items: a power adjustment factor, a power control parameter set, or a maximum power limit.

23. The method of claim 21, wherein: The UE determines a resource group where the UL transmission is located; and The UE determines a transmission power adjustment corresponding to the mapping of the resource group indicated by the corresponding indication field.

24. The method of claim 21, wherein: The UE determines more than one resource groups where the UL transmission is located; and The UE determines a transmission power adjustment for a mapping corresponding to a resource group of the more than one resource groups indicated by a corresponding indication field, wherein the resource group is one of: the resource group with the highest overlap ratio with the UL transmission, or A resource group corresponding to the maximum transmission power among the more than one resource groups.

25. A wireless communication device, comprising a processor and a memory, wherein: The processor is configured to read code from the memory and implement the method according to any one of claims 1 to 24.

26. A computer program product comprising a computer-readable program medium on which codes are stored, which, when executed by a processor, cause the processor to implement the method according to any one of claims 1 to 24.

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