Enhancements on uplink power-control loop(s)

Abstract

An apparatus including: at least one processor; and at least one memory storing instructions that, when executed by the at least one processor, cause the apparatus at least to: determine a mapping of at least one power control command to at least one power control loop; and use, for determination of transmission power for an uplink signal, at least one of the at least one power control command or the at least one power control loop.

Description

Enhancements On Uplink Power-Control Loop(s)TECHNICAL FIELD

[0001] The examples and non-limiting example embodiments relate generally to communications and, more particularly, to enhancements on one or more uplink powercontrol loops, for example when considering reduced-capability nodes.BACKGROUND

[0002] It is known for a communication device to perform data transmission in a communication network.SUMMARY

[0003] In accordance with an aspect, an apparatus includes at least one processor; and at least one memory storing instructions that, when executed by the at least one processor, cause the apparatus at least to: determine a mapping of at least one power control command to at least one power control loop; and use, for determination of transmission power for an uplink signal, at least one of the at least one power control command or the at least one power control loop.

[0004] In accordance with an aspect, an apparatus includes at least one processor; and at least one memory storing instructions that, when executed by the at least one processor, cause the apparatus at least to: transmit, to a user equipment, at least one power control command; and configure the user equipment to determine a mapping of the at least one power control command to at least one power control loop.

[0005] In accordance with an aspect, a method includes determining a mapping of at least one power control command to at least one power control loop; and using, for determination of transmission power for an uplink signal, at least one of the at least one power controlcommand or the at least one power control loop.

[0006] In accordance with an aspect, a method includes transmitting, to a user equipment, at least one power control command; and configuring the user equipment to determine a mapping of the at least one power control command to at least one power control loop.

[0007] In accordance with an aspect, an apparatus includes means for determining a mapping of at least one power control command to at least one power control loop; and means for using, for determination of transmission power for an uplink signal, at least one of the at least one power control command or the at least one power control loop.

[0008] In accordance with an aspect, an apparatus includes means for transmitting, to a user equipment, at least one power control command; and means for configuring the user equipment to determine a mapping of the at least one power control command to at least one power control loop.

[0009] In accordance with an aspect, a computer readable medium includes instructions stored thereon for performing at least the following: determining a mapping of at least one power control command to at least one power control loop; and using, for determination of transmission power for an uplink signal, at least one of the at least one power control command or the at least one power control loop.

[0010] In accordance with an aspect, a computer readable medium includes instructions stored thereon for performing at least the following; transmitting, to a user equipment, at least one power control command; and configuring the user equipment to determine a mapping of the at least one power control command to at least one power control loop.BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The foregoing aspects and other features are explained in the following description, taken in connection with the accompanying drawings.

[0012] FIG. 1 is a block diagram of one possible and non-limiting system in which the example embodiments may be practiced.

[0013] FIG. 2 shows a scenario with some RxP(s) or UL-only node(s) for balancing coverage or throughput between DL and UL.

[0014] FIG. 3 shows an example of mapping PC command(s) to PC loop(s), considering DCI format 2_3.

[0015] FIG. 4 shows an example of mapping PC command(s) to PC loop(s), considering DCI format 2_3.

[0016] FIG. 5 shows an example of mapping PC command(s) to PC loop(s), considering DCI format 2_3.

[0017] FIG. 6 is an illustration of different TCI states used for e.g., SRS transmissions towards different network nodes: gNB and RxPl .

[0018] FIG. 7 is an example apparatus configured to implement the examples described herein.

[0019] FIG. 8 shows a representation of an example of non-volatile memory media used to store instructions that implement the examples described herein.

[0020] FIG. 9 is an example method, based on the examples described herein.

[0021] FIG. 10 is an example method, based on the examples described herein.

[0022] FIG. 11 shows an example of mapping PC command(s) to PC loop(s), based on the examples described herein.DETAILED DESCRIPTION OF EXAMPLE EMBODIMENTS

[0023] Turning to FIG. 1, this figure shows a block diagram of one possible and nonlimiting example in which the examples may be practiced. A user equipment (UE) 110, radio access network (RAN) node 170, and network element(s) 190 are illustrated. In the example of FIG. 1, the user equipment (UE) 110 is in wireless communication with a wireless network 100. A UE is a wireless device that can access the wireless network 100. The UE 110 includes one or more processors 120, one or more memories 125, and one or more transceivers 130 interconnected through one or more buses 127. Each of the one or more transceivers 130 includes a receiver, Rx, 132 and a transmitter, Tx, 133. The one or more buses 127 may be address, data, or control buses, and may include any interconnection mechanism, such as a series of lines on a motherboard or integrated circuit, fiber optics or other optical communication equipment, and the like. The one or more transceivers 130 are connected toone or more antennas 128. The one or more memories 125 include computer program code 123. The UE 110 includes a module 140, comprising one of or both parts 140-1 and / or 140- 2, which may be implemented in a number of ways. The module 140 may be implemented in hardware as module 140-1, such as being implemented as part of the one or more processors 120. The module 140-1 may be implemented also as an integrated circuit or through other hardware such as a programmable gate array. In another example, the module 140 may be implemented as module 140-2, which is implemented as computer program code 123 and is executed by the one or more processors 120. For instance, the one or more memories 125 and the computer program code 123 may be configured to, with the one or more processors 120, cause the user equipment 110 to perform one or more of the operations as described herein. The UE 110 communicates with RAN node 170 via a wireless link 111.

[0024] The RAN node 170 in this example is a base station that provides access for wireless devices such as the UE 110 to the wireless network 100. The RAN node 170 may be, for example, a base station for 5G, also called New Radio (NR). In 5G, the RAN node 170 may be a NG-RAN node, which is defined as either a gNB or an ng-eNB. A gNB is a node providing NR user plane and control plane protocol terminations towards the UE, and connected via the NG interface (such as connection 131) to a 5GC (such as, for example, the network element(s) 190). The ng-eNB is a node providing E-UTRA user plane and control plane protocol terminations towards the UE, and connected via the NG interface (such as connection 131) to the 5GC. The NG-RAN node may include multiple gNBs, which may also include a central unit (CU) (gNB-CU) 196 and distributed unit(s) (DUs) (gNB-DUs), of which DU 195 is shown. Note that the DU 195 may include or be coupled to and control a radio unit (RU). The gNB-CU 196 is a logical node hosting radio resource control (RRC), SDAP and PDCP protocols of the gNB or RRC and PDCP protocols of the en-gNB that control the operation of one or more gNB-DUs. The gNB-CU 196 terminates the Fl interface connected with the gNB-DU 195. The Fl interface is illustrated as reference 198, although reference 198 also illustrates a link between remote elements of the RAN node 170 and centralized elements of the RAN node 170, such as between the gNB-CU 196 and the gNB- DU 195. The gNB-DU 195 is a logical node hosting RLC, MAC and PHY layers of the gNB or en-gNB, and its operation is partly controlled by gNB-CU 196. One gNB-CU 196 supports one or multiple cells. One cell may be supported with one gNB-DU 195, or one cell may be supported / shared with multiple DUs under RAN sharing. The gNB-DU 195 terminates the Fl interface 198 connected with the gNB-CU 196. Note that the DU 195 is considered toinclude the transceiver 160, e.g., as part of a RU, but some examples of this may have the transceiver 160 as part of a separate RU, e.g., under control of and connected to the DU 195. The RAN node 170 may also be an eNB (evolved NodeB) base station, for LTE (long term evolution), or any other suitable base station or node.

[0025] The RAN node 170 includes one or more processors 152, one or more memories 155, one or more network interfaces (N / W I / F(s)) 161, and one or more transceivers 160 interconnected through one or more buses 157. Each of the one or more transceivers 160 includes a receiver, Rx, 162 and a transmitter, Tx, 163. The one or more transceivers 160 are connected to one or more antennas 158. The one or more memories 155 include computer program code 153. The CU 196 may include the processor(s) 152, one or more memories 155, and network interfaces 161. Note that the DU 195 may also contain its own memory / memories and processor(s), and / or other hardware, but these are not shown.

[0026] The RAN node 170 includes a module 150, comprising one of or both parts 150-1 and / or 150-2, which may be implemented in a number of ways. The module 150 may be implemented in hardware as module 150-1, such as being implemented as part of the one or more processors 152. The module 150-1 may be implemented also as an integrated circuit or through other hardware such as a programmable gate array. In another example, the module 150 may be implemented as module 150-2, which is implemented as computer program code 153 and is executed by the one or more processors 152. For instance, the one or more memories 155 and the computer program code 153 are configured to, with the one or more processors 152, cause the RAN node 170 to perform one or more of the operations as described herein. Note that the functionality of the module 150 may be distributed, such as being distributed between the DU 195 and the CU 196, or be implemented solely in the DU 195.

[0027] The one or more network interfaces 161 communicate over a network such as via the links 176 and 131. Two or more gNBs 170 may communicate using, e.g., link 176. The link 176 may be wired or wireless or both and may implement, for example, an Xn interface for 5G, an X2 interface for LTE, or other suitable interface for other standards.

[0028] The one or more buses 157 may be address, data, or control buses, and may include any interconnection mechanism, such as a series of lines on a motherboard or integrated circuit, fiber optics or other optical communication equipment, wireless channels, and thelike. For example, the one or more transceivers 160 may be implemented as a remote radio head (RRH) 195 for LTE or a distributed unit (DU) 195 for gNB implementation for 5G, with the other elements of the RAN node 170 possibly being physically in a different location from the RRH / DU 195, and the one or more buses 157 could be implemented in part as, for example, fiber optic cable or other suitable network connection to connect the other elements (e.g., a central unit (CU), gNB-CU 196) of the RAN node 170 to the RRH / DU 195. Reference 198 also indicates those suitable network link(s).

[0029] A RAN node / gNB can comprise one or more TRPs to which the methods described herein may be applied. FIG. 1 shows that the RAN node 170 comprises TRP 51 and TRP 52, in addition to the TRP represented by transceiver 160. Similar to transceiver 160, TRP 51 and TRP 52 may each include a transmitter and a receiver. The RAN node 170 may host or comprise other TRPs not shown in FIG. 1.

[0030] A relay node in NR is called an integrated access and backhaul node. A mobile termination part of the IAB node facilitates the backhaul (parent link) connection. In other words, the mobile termination part comprises the functionality which carries UE functionalities. The distributed unit part of the IAB node facilitates the so called access link (child link) connections (i.e. for access link UEs, and backhaul for other IAB nodes, in the case of multi-hop IAB). In other words, the distributed unit part is responsible for certain base station functionalities. The IAB scenario may follow the so called split architecture, where the central unit hosts the higher layer protocols to the UE and terminates the control plane and user plane interfaces to the 5G core network.

[0031] It is noted that the description herein indicates that “cells” perform functions, but it should be clear that equipment which forms the cell may perform the functions. The cell makes up part of a base station. That is, there can be multiple cells per base station. For example, there could be three cells for a single carrier frequency and associated bandwidth, each cell covering one-third of a 360 degree area so that the single base station’s coverage area covers an approximate oval or circle. Furthermore, each cell can correspond to a single carrier and a base station may use multiple carriers. So if there are three 120 degree cells per carrier and two carriers, then the base station has a total of 6 cells.

[0032] The wireless network 100 may include a network element or elements 190 that may include core network functionality, and which provides connectivity via a link or links 181with a further network, such as a telephone network and / or a data communications network (e.g., the Internet). Such core network functionality for 5G may include location management functions (LMF(s)) and / or access and mobility management function(s) (AMF(S)) and / or user plane functions (UPF(s)) and / or session management function(s) (SMF(s)). Such core network functionality for LTE may include MME (mobility management entity) / SGW (serving gateway) functionality. Such core network functionality may include SON (self- organizing / optimizing network) functionality. These are merely example functions that may be supported by the network element(s) 190, and note that both 5G and LTE functions might be supported. The RAN node 170 is coupled via a link 131 to the network element 190. The link 131 may be implemented as, e.g., an NG interface for 5G, or an SI interface for LTE, or other suitable interface for other standards. The network element 190 includes one or more processors 175, one or more memories 171, and one or more network interfaces (N / W I / F(s)) 180, interconnected through one or more buses 185. The one or more memories 171 include computer program code 173. Computer program code 173 may include SON and / or MRO functionality 172.

[0033] The wireless network 100 may implement network virtualization, which is the process of combining hardware and software network resources and network functionality into a single, software-based administrative entity, or a virtual network. Network virtualization involves platform virtualization, often combined with resource virtualization. Network virtualization is categorized as either external, combining many networks, or parts of networks, into a virtual unit, or internal, providing network-like functionality to software containers on a single system. Note that the virtualized entities that result from the network virtualization are still implemented, at some level, using hardware such as processors 152 or 175 and memories 155 and 171, and also such virtualized entities create technical effects.

[0034] The computer readable memories 125, 155, and 171 may be of any type suitable to the local technical environment and may be implemented using any suitable data storage technology, such as semiconductor based memory devices, flash memory, magnetic memory devices and systems, optical memory devices and systems, non-transitory memory, transitory memory, fixed memory and removable memory. The computer readable memories 125, 155, and 171 may be means for performing storage functions. The processors 120, 152, and 175 may be of any type suitable to the local technical environment, and may include one or more of general purpose computers, special purpose computers, microprocessors, digital signalprocessors (DSPs) and processors based on a multi-core processor architecture, as nonlimiting examples. The processors 120, 152, and 175 may be means for performing functions, such as controlling the UE 110, RAN node 170, network element(s) 190, and other functions as described herein.

[0035] In general, the various example embodiments of the user equipment 110 can include, but are not limited to, cellular telephones such as smart phones, tablets, personal digital assistants (PDAs) having wireless communication capabilities, portable computers having wireless communication capabilities, image capture devices such as digital cameras having wireless communication capabilities, gaming devices having wireless communication capabilities, music storage and playback devices having wireless communication capabilities, internet appliances including those permitting wireless internet access and browsing, tablets with wireless communication capabilities, head mounted displays such as those that implement virtual / augmented / mixed reality, as well as portable units or terminals that incorporate combinations of such functions. The UE 110 can also be a vehicle such as a car, or a UE mounted in a vehicle, a UAV such as e.g. a drone, or a UE mounted in a UAV. The user equipment 110 may be terminal device, such as mobile phone, mobile device, sensor device etc., the terminal device being a device used by the user or not used by the user.

[0036] UE 110, RAN node 170, and / or network element(s) 190, (and associated memories, computer program code and modules) may be configured to implement (e.g. in part) the methods described herein. Thus, computer program code 123, module 140-1, module 140-2, and other elements / features shown in FIG. 1 of UE 110 may implement user equipment related aspects of the examples described herein. Similarly, computer program code 153, module 150-1, module 150-2, and other elements / features shown in FIG. 1 of RAN node 170 may implement gNB / TRP related aspects of the examples described herein. Computer program code 173 and other elements / features shown in FIG. 1 of network element(s) 190 may be configured to implement network element related aspects of the examples described herein.

[0037] Having thus introduced a suitable but non-limiting technical context for the practice of the example embodiments, the example embodiments are now described with greater specificity.

[0038] UL power control (existing procedures):

[0039] NR PUSCH power control is essentially based on a combination of (1-2):

[0040] 1. Open-loop power control, including support for fractional path-loss compensation, where the UE estimates the UL path-loss based on DL measurements and sets the transmit power accordingly.

[0041] 2. Closed-loop power control based on explicit transmit power-control (TPC) commands provided by the network.

[0042] The UE determines the PUSCH transmission power based on the procedures described in Sec. 7.1 of TS 38.213. In summary, the UE is indicated I determines closed-loop parameters (closed-loop index, TPC command) and open-loop parameters (pathloss reference RS, pO, alpha). The TPC command is carried in the DCI scheduling the PUSCH transmission. Also, TPC command (and corresponding closed-loop index) can be carried jointly to multiple UEs by means of group-common DCI using DCI format 2-2 (as described in Sec. 7.3.1.3.3 of TS 38.212).

[0043] Some of the main power control parameters that the PUSCH transmission power depends on are: closed-loop index (also known as PC adjustment state), TPC command (fb,f,c, absolute or accumulative TPC command), pathloss reference RS (reference signal), pO (also denoted as PO_UE_PUSCH), alpha (for partial of full path-loss compensation), and DELTA TF (i.e.,), also sometimes referred to as power adjustment component. The DELTA_TF (i.e., ATF,b,f,c(0)termessentially models how the required received power varies when the number of information BPRE (bits per resource element) changes due to different modulation schemes and channel-coding rates.

[0044] Specifically, the PUSCH power is determined based on the following (from TS 38.213):

[0045] SRS power control is somewhat similar to PUSCH power control.

[0046] Specifically, the SRS transmission power is determined based on the following (from TS 38.213):

[0047] Finally, the PUCCH transmission power is determined based on the following (from TS 38.213):

[0048] Note that PL refers to the pathloss component / parameter, and is defined in TS 38.213 as follows: PLb,f,c(.(ld)=referenceSignalP ower - higher layer filtered RSRP, where referenceSignalP ow er is provided by higher layers and RSRP is defined in [7, TS 38.215] for the reference serving cell and the higher layer filter configuration provided by QuantityConfig is defined in [12, TS 38.331] for the reference serving cell.

[0049] DCI Format 2_3, which is a group common DCI, may be applicable for uplink carrier(s) of serving cells where a UE is not configured for PUSCH / PUCCH transmission or when srs-PowerControlAdjustmentStates indicates a separate power control adjustment state between SRS transmissions and PUSCH transmissions.

[0050] If the UE is configured with higher layer parameter srs-TPC-PDCCH-Group = typeA for an UL without PUCCH and PUSCH or an UL on which the SRS power control is not tied with PUSCH power control, one block is configured for the UE by higher layers, with the following fields defined for the block (1-2):

[0051] 1. SRS request - 0 or 2 bits.

[0052] 2. TPC command number 1, TPC command number 2, ..., TPC command number N, where each TPC command applies to a respective UL carrier provided by higher layer parameter cc-IndexInOneCC-Set

[0053] If the UE is configured with higher layer parameter srs-TPC-PDCCH-Group = typeB for an UL without PUCCH and PUSCH or an UL on which the SRS power control is not tied with PUSCH power control, one block or more blocks is configured for the UE by higher layers where each block applies to an UL carrier, with the following fields defined for each block (1-2):

[0054] 1 . SRS request - 0 or 2 bits.

[0055] 2. TPC command - 2 bit

[0056] Background on SRS switching:

[0057] DCI format 2_3 is applicable for uplink carrier(s) of serving cells where a UE is not configured for PUSCH / PUCCH transmission or for uplink carrier(s) of a serving cell where srs-Po-werControlAdjustmentStates indicates a separate power control adjustment state between SRS transmissions and PUSCH transmissions.

[0058] A UE configured by higher layers with parameter carrierSwitching can be provided (1-7):

[0059] 1. a TPC-SRS-RNTI for a DCI format 2_3 by tpc-SRS-RNTI

[0060] 2. an index of a serving cell where the UE interrupts transmission in order to transmit SRS on one or more other serving cells by srs-SwilchFromServCelllndex

[0061] 3. an indication of an uplink carrier where the UE interrupts transmission in order to transmit SRS on one or more other serving cells by srs-SwitchFromCarrier

[0062] 4. a DCI format 2_3 field configuration type by typeA or typeB. For typeA, an index for a set of serving cells is provided by cc-Setlndex, indexes of serving cells in the set of serving cells are provided by cc-IndexInOneCC-Set, and a DCI format 2_3 field includes a TPC command for each serving cell from the set of serving cells and can also include an SRS request for SRS transmission on the set of serving cells. For typeB, DCI format 2 3 field includes a TPC command for a serving cell index and can also include an SRS request for SRS transmission on the serving cell

[0063] 5. an indication for a serving cell for whether or not a field in DCI format 2_3 includes an SRS request by fleldTypeFormat2-3 where a value of 0 / 1 indicates absence / presence of the SRS request.

[0064] 6. an index for a location in DCI format 2_3 of a first bit for a field for a nonsupp lementary uplink carrier of the serving cell by startingBitOfFormat2-3

[0065] 7. an index for a location in DCI format 2_3 of a first bit for a field for a supplementary uplink carrier of the serving cell by startingBitOfFormat2-3SUL-vl 530

[0066] Additional background on SRS triggering / request (from TS 38.212):

[0067] Background on unified TCI framework:

[0068] 3GPP Release 17 introduced a unified TCI framework meaning that TCI states so far providing QCL assumptions for the reception of DL signals and channels would be used also to provide spatial sources for the transmission of UL signals and channels to determine UL TX spatial filter. Furthermore, the unified TCI framework defines the concept of indicated TCI state. That means that one or multiple (in case of multi-TRP for instance) of the configured TCI states is / are indicated TCI state(s) at a time. The indicated TCI state can be joint DL and UL TCI state or separate DL and separate UL TCI states. Indicated TCI state provides QCL source (DL) and spatial source (UL) for the set of downlink signals and channels and for the set of uplink signals and channels, respectively. In Rell7 there can be one indicated joint DL and UL or one indicated DL and one indicate UL TCI state for the UE.

[0069] Unified TCI framework is extended in Release 18 so that there can be then multiple indicated DL and UL TCI states.

[0070] A strong candidate for 3GPP Release 19 MIMO discussions is the following, which is listed by the latest discussions on 3 GPP Release 19 MIMO scope (in the summary for RANRel-19 Package, prepared by RAN Chair):

[0071] Topic 5: Enhancement for asymmetric downlink S-TRP / UL M-TRP scenario assuming intra-band intra-cell non-co-located M-TRP scenarios without changing existing cell definition or defining a new cell.

[0072] Objective 1: Extension of 3GPP Release 18 2TA mDCI to sDCI assuming legacy PRACH resources

[0073] Objective 2: Separate UL power control for SRS only to downlink S-TRP from SRS to UL M-TRP and introduce path loss measurement to uplink M-TRP

[0074] The examples described herein focus on Objective 2, i.e., UL power control aspects for UL-only node (which may also be termed as RxP or RX-only TRP). An illustration of the scenarios of interest is shown in FIG. 2. FIG. 2 depicts a Scenario with some RxP(s) I UL- only node(s) (202-1, 202-2) for balancing coverage / throughput between DL (204) and UL (206, 208, 210).

[0075] As previously indicated, a strong candidate for 3 GPP Release 19 MIMO discussions is a scenario where some of the nodes / TRPs are UL-only. In this invention, we focus on Objective 2 (listed in the previous Section), i.e., UL power control aspects for such scenarios (i.e., considering the presence of one or more RxPs / UL-only nodes).

[0076] Note that legacy operations support beam-based power control with beam indicators / TCI states and includes pathloss (PL) measurement on the downlink. Considering one or multiple RxPs, the DL path-loss (PL) measurement would be based on the gNB transmission, but it’s not possible to measure / obtain the path-loss between the RxPs and the UEs based on DL measurements. In other words, UL-only nodes cannot transmit reference signals for UE- side PL measurement.

[0077] As explained previously, for SRS (e.g., on a given CC or carrier), there is only one closed-loop power control loop, which may be separate from that (or same as that) of PUSCH. Given the scenario of interest (with some UL-only node(s)), we focus on the case where at least two such loops would be needed and address the issue of mapping power-control commands to configured power-control loops.

[0078] It’s assumed that the main scenario of interest is as follows: there is a gNB whichcan transmit and receive, and at least one RxP (or UL-only node) which can only receive. Nevertheless, the proposed solution below is not necessarily restricted to this scenario.

[0079] In the herein described solution, a UE determines a mapping of at least one indicated power-control command to at least one power-control loop, uses, for the determination of transmission power for an UL signal (or channel) such as SRS, at least one power-control command and / or at least one power control loop, wherein the UE determines the mapping according to one or more of the following indication, configuration, and / or rule (1-8):

[0080] 1 . the UE may be configured with at least one field or block, or at least one bit in a field(s) or in a block(s), in DCI (or even MAC CE) for the indication of at least one powercontrol loop index and / or one or two power-control commands; such configuration may be provided per CC (component carrier) or cell or BWP (bandwidth part). UE may then be configured / indicated to map the first indicated power-control command to a power-control loop. Additionally, when DCI is carrying two power control commands, the UE may map the second indicated power-control command to another power-control loop.

[0081] In a variant, the indication(s), power control loop index and / or power control commands, may be provided for a group of cells or carriers or CCs (component carriers). Specifically, one indication of power-control loop index or one indication of mapping may be applicable / valid / common for a group of cells / carriers / CCs. It is noted that a carrier may be a non-supplementary uplink carrier or a supplementary uplink carrier.

[0082] 2. the UE may be configured / indicated to map an indicated power-control command in the DCI to the power-control loop corresponding to or associated with a triggered SRS resource(s) or resource set, where this SRS resource(s) or resource set is triggered by the same DCI or by another DCI (for instance latest UL / DL DCI triggering SRS) or by a MAC CE. In a variant, the UE may be configured / indicated to map an indicated power-control command in the DCI to the power-control loop corresponding to or associated with latest transmitted / triggered SRS resource(s) or resource set.

[0083] The association of SRS resource(s) or resource set to a power-control loop may be based on or through the UL / joint TCI applicable / used for this resource or resource set, or may be based on or through the UL / joint TCI applicable / used for the lowest-index resource in the resource set, or based on higher-layer (such as RRC) configuration / parameter (or even lower layer configuration / indication such as via MAC CE or DCI) that e.g., associates an SRSresource(s) or SRS resource set to a power-control loop.

[0084] 3. the UE may be configured / indicated to map an indicated power-control command to the power-control loop corresponding to or associated with an SRS resource set with lower / higher index or to a first / second indicated TCI state or to an indicated / activated TCI state with lower / higher index. Alternatively, the UE may be configured / indicated (e.g., via RRC) to map an indicated power-control command to a specific power-control loop; as an example, this may be applicable if the DCI carrying the command doesn’t trigger SRS / UL transmission (on a given CC).

[0085] The following embodiments might overlap with some other embodiments mentioned above and / or below. If the DCI triggers SRS transmission(s) or if SRS request in DCI is set to a value that is different from ‘00’ (i.e., value ‘10’, ‘01 ’, or ‘11 ’): the UE may be specified / configured to map indicated power-control command to the power-control loop associated to this SRS transmission(s). If more than one SRS resource set is triggered and there is a single power-control command, the power-control command is mapped to the power-control loop of the SRS resource set with lower / higher index or to the power-control loop associated to the SRS resource set that starts first / last in time or to the power-control loop with lower / higher index. If more than one SRS resource set is triggered, and they correspond to different power-control loops, and there are two indicated power-control commands, the first power-control command is mapped to the loop associated to the SRS resource set with lower / higher index or to the loop associated to the SRS resource set that starts first / last in time or to the loop with lower / higher index, and the second command is mapped to the other loop. If the DCI doesn’t trigger SRS transmission(s) or if SRS request fields consists in 0 bits or if the SRS request is set to value ‘00’: for mapping indicated command(s) to a power-control loop, the UE may follow any of the ways defined in other embodiments, e.g., UE may be specified / configured to follow a power-control loop indication in the DCI or may map the command (or the first command, if two commands are indicated) to the power-control loop with lower / higher index.

[0086] In some embodiments, for an UL carrier / CC configured with two PC loops and with two PC commands indicated in DCI: the first indicated PC command may be mapped to the first PC loop and second indicated PC command may be mapped to the second PC loop, where the first (or second) PC loop may correspond to the PC loop with a lower / higher index or to the PC loop corresponding to the SRS resource set or (indicated) TCI state with a lower / higherindex or the PC loop associated with the SRS resource with the lowest index of the SRS resource set with the lower / higher index.

[0087] In some embodiments, for an UL carrier / CC configured with two PC loops and with two PC commands indicated in DCI: a PC command may be mapped / applied to a PC loop only if at least one SRS resource set associated to this loop is triggered; otherwise, the PC command may not be mapped to a PC loop.

[0088] In some embodiments, for an UL carrier / CC configured with two PC loops and with one PC command indicated in DCI: the PC command may be mapped to the PC loop associated with the triggered SRS resource set(s). If at least two SRS resource sets are triggered and they correspond to different PC loops, the PC command may be mapped to the PC loop associated to the first SRS resource set or to the SRS resource set with the lower / higher index or to the SRS resource set with a TCI state with a lower / higher index or to the lowest-index SRS resource of the SRS resource set of a higher / lower index. Alternatively, the PC command may be mapped to the two PC loops. If no SRS resource set is triggered, then the PC command may be mapped to the PC loop with a lower / higher index or to a configured / default PC loop or may not be mapped to any PC loop.

[0089] 4. the UE may be configured with a specific RNTI, where if the DCI / PDCCH is scrambled with this RNTI the UE may determine one or more of: whether one or two powercontrol commands (for or per a CC / serving cell / carrier, or for a group of CCs / serving cells / carriers) are present or absent in the DCI, whether power-control loop indication (such as loop index) is present (or absent) in the DCI, to map an indicated power-control command to a power-control loop, or to map two indicated power-control commands to two power-control loops.

[0090] 5. UE may map, for all SRS resources or resource sets that don’t have an associated pathloss RS (reference signal) or simply DL RS (e.g., a first loop), power-control commands to a same power-control loop. Alternatively, or additionally, UE may map, for all SRS resources or resource sets that have associated pathloss RS (reference signal) or simply DL RS, power-control commands to another power-control loop (e.g., a second loop). Note that the association or not of an SRS resource or resource set to a DL RS may be known e.g., based on the TCI state or quasi-colocation information that is applicable / used for the SRS resource or resource set.

[0091] 6. UE may map an indicated power-control command to the power-control loop corresponding to the first SRS transmission(s) after a certain (configured or specified) period of time after receiving the PDCCH / DCI containing the power-control command.

[0092] 7. The UE may be indicated in DCI whether a power-control command is provided for a power-control loop. For example, there may be one or two bits in the DCI, each of which corresponds to a loop. Considering e.g., the first bit: if the bit is set to ‘0’ (or alternatively, ‘ 1 ’) then the UE may determine that a corresponding power-control command is absent in the DCI; if the bit is set to ‘1’ (or alternatively, ‘0’) then the UE may determine that a corresponding power-control command is present in the DCI.

[0093] 8. The UE may be indicated, using at least one bit or field, in DCI one or more of the following: whether one or two power-control commands (for or per a CC / carrier / cell, or for a group of CCs / carriers / cells) are present or absent in the DCI, whether power-control loop indication (such as loop index) is present (or absent) in the DCI, map an indicated powercontrol command to a power-control loop. Alternatively, or additionally, the UE may be configured (e.g., via RRC) per CC / carrier / cell or per group of CCs / carriers / cells one or more of the following: if one power-control command is present in the DCI, if two power-control commands are present in the DCI, if no power-control command is present in the DCI.

[0094] Any of the (above or below) embodiments may be applicable / valid if the UE is configured with specific value of an RRC parameter, such as specific type of srs-TPC- PDCCH-Group (such as TypeA, Type B, or another Type).

[0095] In any of the (above or below) embodiments, a power-control loop may be closed- loop power control. Alternatively, or additionally, power-control loop may be open-loop power control. Alternatively, or additionally, power-control loop may refer to (closed-loop) power-control adjustment state.

[0096] In any of the above embodiments, a power-control command may be a TPC (transmit power control) command. Alternatively, a power-control command may be an open loop parameter (such as nominal power P0 or alpha).

[0097] The DCI mentioned in any of the (above or below) embodiments may be group- common DCI (that may carry information to multiple UEs), such as DCI format 2 3, or may be UE-dedicated DCI, or may correspond to a group common PDCCH. Alternatively, oradditionally, an example of such DCI may be DCI format 0 1, 1_1 , 0_2, or 1_2.

[0098] Note that at least some of the above embodiments are valid if srs- PowerControlAdjustmentStates indicates a separate power control adjustment state for SRS transmissions and PUSCH transmissions, and if there are two power-control loops for SRS. Alternatively, or additionally, at least some of the above embodiments are valid for an uplink carrier if this carrier is configured without PUCCH and PUSCH.

[0099] Note that: if srs-PowerControlAdjustmentStates indicates a same power control adjustment state for SRS transmissions and PUSCH transmissions and this is considered as a first loop, a TPC command indicated in DCI (such as DCI format 2_3) may map to the other power-control loop / power control adjustment state if any).

[0100] Note that: if srs-PowerControlAdjustmentStates indicates a same power control adjustment state for SRS transmissions and PUSCH transmissions, and there are two other loops I adjustment states, the UE determines the mapping of TPC command(s) indicated in DCI (such as DCI format 2 3) to power-control loops according to one or more of the previous embodiments.

[0101] At least in some of the embodiments, mapping a PC command to a PC loop may mean or imply applying the command to the loop and / or adding the command to the accumulated value of the loop.

[0102] Illustrations of some embodiments are shown in FIG. 3, FIG. 4, and FIG. 5.

[0103] FIG. 3 depicts an example of mapping one or more PC commands to one or more PC loops, considering DCI format 2 3; note that only part of the DCI is shown. FIG. 3 shows block i (320), where block i (320) includes SRS request 310, and N TPCs, namely TPC 1 312- 1, TPC 2 312-2, up to TPC N 312-N. The SRS request (310) triggers one or more SRS resource sets. For UL carrier 1 (or CC1) where two PC loops are configured and where a single PC command, i.e., TPC 1 312-1, is indicated for one of the two loops at a time: indicated TPC 1 (312-1) is mapped to the PC loop corresponding to one or more triggered SRS resources or resource sets on this UL carrier or CC of the PC loop associated with the TCI state applicable to these one or more SRS resources on this UL carrier or CC.

[0104] FIG. 4 depicts an example of a mapping of one or more PC commands to one ormore PC loops, considering DCI format 2 3; note that only part of the DCI is shown. FIG. 4 shows block i (420), where block i (420) includes SRS request 410, and N TPCs, namely TPC 1 412-1, TPC 2 412-2, up to TPC N 412-N. The SRS request (410) does not trigger one or more SRS resource sets. For UL carrier 1 (or CC1) where two PC loops are configured and where a single PC command, i.e., TPC 1 412-1, is indicated for one ofthe two loops at atime: indicated TPC 1 (412-1) is mapped to the PC loop corresponding to one or more SRS resources or resource sets with lower index on this UL carrier or CC or to the PC loop associated with the first (or second, if any) indicated TCI state for this UL carrier or CC.

[0105] FIG. 5 depicts an example of a mapping of one or more PC commands to PC loops, considering DCI format 2_3; note that only part of the DCI is shown. FIG. 5 shows block i (520), where block i (520) includes SRS request 510, PC loop indication 515, and N TPCs, namely TPC 1 512-1, TPC 2 512-2, up to TPC N 512-N. For any UL carrier n (or CC n) where two PC loops are configured and where a single PC command, i.e., TPC n (where n is in {1, ..., N}), is indicated for one of the two loops at a time: the PC loop indication 515 indicates the mapping of TPC n (512-1, 512-2, ..., 512-N) to a PC loop (the first or second loop).

[0106] An Example of scenario and setting of interest is illustrated in FIG. 6 where: An UL transmission 602 towards RxPl 202-1 can be done using TCI state 1 (603), and an UL transmission 604 towards gNB 170 can be done using TCI state 0 (605). Also shown is DL transmission 606 from gNB 170 to UE 110. Thus, FIG. 6 is an illustration of different TCI states (603, 605) used for e.g., SRS transmissions (602, 604) towards different network nodes: gNB 170, RxPl 202-1. The SRS transmissions (602, 604) may not necessarily occur at a same time.

[0107] Advantages and technical effects of the herein described examples include Efficient mapping of indicated PC command(s) to PC loop(s) considering two such loops for SRS, the examples described herein are mainly but not only targeted to scenarios with one or more UL- only node or TRP, and more efficient UL / SRS power control operation overall. The examples described herein may be applicable to Rel-19 MIMO, 3GPP functionalities, and 3GPP standardization.

[0108] FIG. 7 is an example apparatus 700, which may be implemented in hardware, configured to implement the examples described herein. The apparatus 700 comprises at leastone processor 702 (e.g. an FPGA and / or CPU), one or more memories 704 including computer program code 705, the computer program code 705 having instructions to carry out the methods described herein, wherein the at least one memory 704 and the computer program code 705 are configured to, with the at least one processor 702, cause the apparatus 700 to implement circuitry, a process, component, module, or function (implemented with control module 706) to implement the examples described herein. The memory 704 may be a non- transitory memory, a transitory memory, a volatile memory (e.g. RAM), or a non-volatile memory (e.g. ROM).

[0109] Mapping 730 may implement the examples described herein related to determining a mapping of at least one indicated power-control command to at least one power control loop, or to configuring a UE to determine a mapping of at least one indicated power-control command to at least one power control loop. Optionally included TX power may implement determining a transmission power for a UL signal or channel such as SRS, using at least one power-control command and / or at least one power control loop.

[0110] The apparatus 700 includes a display and / or I / O interface 708, which includes user interface (UI) circuitry and elements, that may be used to display aspects or a status of the methods described herein (e.g., as one of the methods is being performed or at a subsequent time), or to receive input from a user such as with using a keypad, camera, touchscreen, touch area, microphone, biometric recognition, one or more sensors, etc. The apparatus 700 includes one or more communication e.g. network (N / W) interfaces (I / F(s)) 710. The communication I / F(s) 710 may be wired and / or wireless and communicate over the Internet / other network(s) via any communication technique including via one or more links 724. The link(s) 724 may be the link(s) 131 and / or 176 from FIG. 1. The link(s) 131 and / or 176 from FIG. 1 may also be implemented using transceiver(s) 716 and corresponding wireless link(s) 726. The communication I / F(s) 710 may comprise one or more transmitters or one or more receivers.

[0111] The transceiver 716 comprises one or more transmitters 718 and one or more receivers 720. The transceiver 716 and / or communication I / F(s) 710 may comprise standard well-known components such as an amplifier, filter, frequency-converter, (de)modulator, and encoder / decoder circuitries and one or more antennas, such as antennas 714 used for communication over wireless link 726.

[0112] The control module 706 of the apparatus 700 comprises one of or both parts 706-1 and / or 706-2, which may be implemented in a number of ways. The control module 706 may be implemented in hardware as control module 706-1, such as being implemented as part of the one or more processors 702. The control module 706-1 may be implemented also as an integrated circuit or through other hardware such as a programmable gate array. In another example, the control module 706 may be implemented as control module 706-2, which is implemented as computer program code (having corresponding instructions) 705 and is executed by the one or more processors 702. For instance, the one or more memories 704 store instructions that, when executed by the one or more processors 702, cause the apparatus 700 to perform one or more of the operations as described herein. Furthermore, the one or more processors 702, the one or more memories 704, and example algorithms (e.g., as flowcharts and / or signaling diagrams), encoded as instructions, programs, or code, are means for causing performance of the operations described herein.

[0113] The apparatus 700 to implement the functionality of control 706 may be UE 110, RAN node 170 (e.g. gNB), or network element(s) 190 (e.g. LMF 190). Thus, processor 702 may correspond to processor(s) 120, processor(s) 152 and / or processor(s) 175, memory 704 may correspond to one or more memories 125, one or more memories 155 and / or one or more memories 171, computer program code 705 may correspond to computer program code 123, computer program code 153, and / or computer program code 173, control module 706 may correspond to module 140-1, module 140-2, module 150-1, and / or module 150-2, and communication I / F(s) 710 and / or transceiver 716 may correspond to transceiver 130, antenna(s) 128, transceiver 160, antenna(s) 158, N / W I / F(s) 161, and / or N / W I / F(s) 180. Alternatively, apparatus 700 and its elements may not correspond to either of UE 110, RAN node 170, or network element(s) 190 and their respective elements, as apparatus 700 may be part of a self-organizing / optimizing network (SON) node or other node, such as a node in a cloud.

[0114] Apparatus 700 may also correspond to RxPl 202-1 or RxP2 202-2 (where, for example, Tx 718 is disabled).

[0115] The apparatus 700 may also be distributed throughout the network (e.g. 100) including within and between apparatus 700 and any network element (such as a network control element (NCE) 190 and / or the RAN node 170 and / or UE 110).

[0116] Interface 712 enables data communication and signaling between the various items of apparatus 700, as shown in FIG. 7. For example, the interface 712 may be one or more buses such as address, data, or control buses, and may include any interconnection mechanism, such as a series of lines on a motherboard or integrated circuit, fiber optics or other optical communication equipment, and the like. Computer program code (e.g. instructions) 705, including control 706 may comprise object-oriented software configured to pass data or messages between objects within computer program code 705. Computer program code 705 may comprise functional, scripting, or procedural programming constructs. The apparatus 700 need not comprise each of the features mentioned, or may comprise other features as well. The various components of apparatus 700 may at least partially reside in a common housing 728, or a subset of the various components of apparatus 700 may at least partially be located in different housings, which different housings may include housing 728.

[0117] FIG. 8 shows a schematic representation of non-volatile memory media 800a (e.g. computer / compact disc (CD) or digital versatile disc (DVD)) and 800b (e.g. universal serial bus (USB) memory stick) and 800c (e.g. cloud storage for downloading instructions and / or parameters 802 or receiving emailed instructions and / or parameters 802) storing instructions and / or parameters 802 which when executed by a processor allows the processor to perform one or more of the steps of the methods described herein. Instructions and / or parameters 802 may represent a non-transitory computer readable medium.

[0118] FIG. 9 is an example method 900, based on the example embodiments described herein. At 910, the method includes determining a mapping of at least one power control command to at least one power control loop. At 920, the method includes using, for determination of transmission power for an uplink signal, at least one of the at least one power control command or the at least one power control loop. Method 900 may be performed with UE 110 or apparatus 700.

[0119] FIG. 10 is an example method 1000, based on the example embodiments described herein. At 1010, the method includes transmitting, to a user equipment, at least one power control command. At 1020, the method includes configuring the user equipment to determine a mapping of the at least one power control command to at least one power control loop. Method 1000 may be performed with RAN node 170, one or more network elements 190, or apparatus 700.

[0120] FIG. 11 shows an example of mapping PC command(s) to PC loop(s), based on the examples described herein. Block for UL carrier or CC 1 (1120) includes SRS request 1110, TPC 1_1 1112-1, and TPC 1_2 1112-2. Block for UL carrier or CC 2 (1130) includes SRS request 1115 and TPC 2 1122. In the example shown in FIG. 11, for UL carrier 1 (or CC1), (and / or for any carrier (or CC) n) where two PC loops are configured, and two PC commands are indicated in DCI, TPC 1 1 1112-1 is mapped to the first PC loop, and TPC 1_2 1112-2 is mapped to the second PC loop. In the example shown in FIG. 11, for UL carrier 2 (or CC2), (and / or for any carrier (or CC) n) where two PC loops are configured, and one PC command is indicated in DCI, TPC 2 1122 is mapped to the PC loop associated to the first triggered SRS resource set (if any).

[0121] The following examples are provided and described herein.

[0122] Example 1 . An apparatus including: at least one processor; and at least one memory storing instructions that, when executed by the at least one processor, cause the apparatus at least to: determine a mapping of at least one power control command to at least one power control loop; and use, for determination of transmission power for an uplink signal, at least one of the at least one power control command or the at least one power control loop.

[0123] Example 2. The apparatus of example 1, wherein the mapping of the at least one power control command to the at least one power control loop comprises performing at least one of: mapping a first power control command in downlink control information to a power control loop, or mapping a second power control command to another power control loop, in response to downlink control information carrying at least two power control commands.

[0124] Example 3. The apparatus of any of examples 1 to 2, wherein: the at least one power control command is applicable to one or more of: a group of cells, a group of carriers, or a group of component carriers; and / or at least one power control loop index associated with the at least one power control loop is applicable to the one or more of: the group of cells, the group of carriers, or the group of component carriers.

[0125] Example 4. The apparatus of any of examples 1 to 3, wherein the at least one memory stores instructions that, when executed by the at least one processor, cause the apparatus to: receive downlink control information or a medium-access-control control-element, wherein the downlink control information or the medium-access-control control-element comprises at least one of: the at least one power control command or the at least one power control loop inat least one field or block, or as at least one bit of the at least one field or block; wherein determining the mapping of the at least one power control command to the at least one power control loop, or using, for determination of transmission power for the uplink signal, the at least one of the at least one power control command or the at least one power control loop is based on the received downlink control information or the medium-access-control controlelement.

[0126] Example 5. The apparatus of example 4, wherein the at least one of: at least one power control command or the at least one power control loop is received per carrier or per component carrier or per bandwidth part.

[0127] Example 6. The apparatus of any of examples 1 to 5, wherein the at least one memory stores instructions that, when executed by the at least one processor, cause the apparatus to: receive downlink control information comprising the at least one power control command; wherein determining the mapping of the at least one power control command to the at least one power control loop comprises mapping the at least one power control command to the at least one power control loop, based on the received downlink control information; wherein the at least one power control loop is associated with a triggered sounding reference signal resource or resource set; wherein the triggered sounding reference signal resource or resource set is triggered by the downlink control information comprising the at least one power control command, or by other downlink control information or by a medium-access-control controlelement.

[0128] Example 7. The apparatus of any of examples 1 to 6, wherein: determining the mapping comprises mapping the at least one power control command to the at least one power control loop; and the at least one power control loop is associated with at least one of: a sounding reference signal resource set with a lower or higher index than another sounding reference signal resource set, a first or second transmission configuration indicator state, or a transmission configuration indicator state with a lower or higher index than another transmission configuration indicator state.

[0129] Example 8. The apparatus of any of examples 1 to 7, wherein the at least one memory stores instructions that, when executed by the at least one processor, cause the apparatus to: determine a configuration of a radio network temporary identifier; and receive downlink control information or a physical downlink control channel scrambled with the radio networktemporary identifier.

[0130] Example 9. The apparatus of example 8, wherein the at least one memory stores instructions that, when executed by the at least one processor, cause the apparatus to: in response to the downlink control information or the physical downlink control channel being scrambled with the radio network temporary identifier, perform at least one of: determine the mapping of the at least one power control command to the at least one power control loop with mapping the at least one power control command to the at least one power control loop, or determine one or more of: whether one or two power control commands, for at least one of: a component carrier, serving cell, or carrier, are present or absent in the downlink control information, or whether a power control loop indication is present or absent in the downlink control information.

[0131] Example 10. The apparatus of any of examples 1 to 9, wherein determining the mapping of the at least one power control command to the at least one power control loop comprises mapping, for one or more sounding reference signal resources or one or more sounding reference resource sets that do not have an associated pathloss reference signal or a downlink reference signal, two or more power control commands of the at least one power control command to the at least one power control loop.

[0132] Example 11. The apparatus of any of examples 1 to 10, wherein the at least one memory stores instructions that, when executed by the at least one processor, cause the apparatus to: receive downlink control information that indicates whether the at least one power control command is provided for the at least one power control loop.

[0133] Example 12. The apparatus of any of examples 1 to 11, wherein the uplink signal comprises a sounding reference signal.

[0134] Example 13. The apparatus of any of examples 1 to 12, wherein the at least one memory stores instructions that, when executed by the at least one processor, cause the apparatus to determine an association of one or more sounding reference signal resources or resource sets to the at least one power control loop based on at least one of the following: an uplink or joint transmission configuration indicator state applicable to or used for the one or more sounding reference signal resources or resource sets, an uplink or joint transmission configuration indicator state applicable to or used for a lowest index resource in the one or more resource sets, a higher layer configuration that associates the one or more soundingreference signal resources or resource sets to the at least one power control loop, or a radio resource control configuration that associates the one or more sounding reference signal resources or resource sets to the at least one power control loop.

[0135] Example 14. The apparatus of any of examples 1 to 13, wherein the at least one memory stores instructions that, when executed by the at least one processor, cause the apparatus to: determine the mapping of the at least one power control command to the at least one power control loop based on being configured with a value of a radio resource control parameter, or use, for the determination of transmission power for the uplink signal, the at least one of the at least one power control command or the at least one power control loop, based on being configured with the value of the radio resource control parameter.

[0136] Example 15. The apparatus of example 14, wherein the value of the radio resource control parameter comprises a type of sounding reference signal transmit power control physical downlink control channel group.

[0137] Example 16. The apparatus of example 15, wherein the type of sounding reference signal transmit power control physical downlink control channel group is TypeA, TypeB, or another Type.

[0138] Example 17. The apparatus of any of examples 1 to 16, wherein the at least one power control loop is one or more of: a closed-loop power control, an open-loop power control, or a closed-loop power control adjustment state.

[0139] Example 18. An apparatus including: at least one processor; and at least one memory storing instructions that, when executed by the at least one processor, cause the apparatus at least to: transmit, to a user equipment, at least one power control command; and configure the user equipment to determine a mapping of the at least one power control command to at least one power control loop.

[0140] Example 19. The apparatus of example 18, wherein configuring the user equipment to determine the mapping of the at least one power control command to the at least one power control loop comprises performing at least one of: configuring the user equipment to map a first power control command in downlink control information to a power control loop, or configuring the user equipment to map a second power control command to another power control loop, in response to downlink control information carrying at least two power controlcommands.

[0141] Example 20. The apparatus of any of examples 18 to 19, wherein: the at least one power control command is applicable to one or more of: a group of cells, a group of carriers, or a group of component carriers; and / or at least one power control loop index associated with the at least one power control loop is applicable to the one or more of: the group of cells, the group of carriers, or the group of component carriers.

[0142] Example 21. The apparatus of any of examples 18 to 20, wherein the at least one memory stores instructions that, when executed by the at least one processor, cause the apparatus to: transmit, to the user equipment, downlink control information or a medium- access-control control-element, wherein the downlink control information or the medium- access-control control-element comprises at least one of: the at least one power control command or the at least one power control loop in at least one field or block, or as at least one bit of the at least one field or block; wherein configuring the user equipment to determine the mapping of the at least one power control command to at least one power control loop is based on the transmitted downlink control information or the medium-access-control controlelement.

[0143] Example 22. The apparatus of example 21, wherein the at least one of: the at least one power control command or the at least one power control loop is transmitted per carrier or per component carrier or per bandwidth part.

[0144] Example 23. The apparatus of any of examples 18 to 22, wherein the at least one memory stores instructions that, when executed by the at least one processor, cause the apparatus to: transmit, to the user equipment, downlink control information comprising the at least one power control command; wherein the downlink control information causes the user equipment to map the at least one power control command to the at least one power control loop; wherein the at least one power control loop corresponds to or is associated with a triggered sounding reference signal resource or resource set; wherein the triggered sounding reference signal resource or resource set is triggered by the downlink control information comprising the at least one power control command, or by other downlink control information or by a medium-access-control control-element transmitted with the apparatus.

[0145] Example 24. The apparatus of any of examples 18 to 23, wherein the at least one power control loop is associated with at least one of: a sounding reference signal resource setwith a lower or higher index than another sounding reference signal resource set, a first or second transmission configuration indicator state, or a transmission configuration indicator state with a lower or higher index than another transmission configuration indicator state.

[0146] Example 25. The apparatus of any of examples 18 to 24, wherein the at least one memory stores instructions that, when executed by the at least one processor, cause the apparatus to: configure the user equipment with a radio network temporary identifier; and transmit, to the user equipment, downlink control information or a physical downlink control channel scrambled with the radio network temporary identifier.

[0147] Example 26. The apparatus of example 25, wherein the downlink control information or the physical downlink control channel being scrambled with the radio network temporary identifier causes the user equipment to perform at least one of: mapping the at least one power control command to the at least one power control loop, or determining one or more of: whether one or two power control commands, for at least one of: a component carrier, serving cell, or carrier, are present or absent in the downlink control information, or whether a power control loop indication is present or absent in the downlink control information.

[0148] Example 27. The apparatus of any of examples 18 to 26, wherein the at least one memory stores instructions that, when executed by the at least one processor, cause the apparatus to: configure the user equipment to map, for one or more sounding reference signal resources or one or more sounding reference resource sets that do not have an associated pathloss reference signal or a downlink reference signal, two or more power control commands of the at least one power control command to the at least one power control loop.

[0149] Example 28. The apparatus of any of examples 18 to 27, wherein the at least one memory stores instructions that, when executed by the at least one processor, cause the apparatus to: transmit, to the user equipment, downlink control information that indicates whether the at least one power control command is provided for the at least one power control loop.

[0150] Example 29. The apparatus of any of examples 18 to 28, wherein the at least one memory stores instructions that, when executed by the at least one processor, cause the apparatus to: configure the user equipment to use, for determination of transmission power for an uplink signal, at least one of: the at least one power control command or the at leastone power control loop; wherein the uplink signal comprises a sounding reference signal.

[0151] Example 30. The apparatus of any of examples 18 to 29, wherein the at least one memory stores instructions that, when executed by the at least one processor, cause the apparatus to configure the user equipment to determine an association of one or more sounding reference signal resources or resource sets to the at least one power control loop based on at least one of the following: an uplink or joint transmission configuration indicator state applicable to or used for the one or more sounding reference signal resources or resource sets, an uplink or joint transmission configuration indicator state applicable to or used for a lowest index resource in the one or more resource sets, a higher layer configuration that associates the one or more sounding reference signal resources or resource sets to the at least one power control loop, or a radio resource control configuration that associates the one or more sounding reference signal resources or resource sets to the at least one power control loop.

[0152] Example 31. The apparatus of any of examples 18 to 30, wherein the at least one memory stores instructions that, when executed by the at least one processor, cause the apparatus to: configure the user equipment with a value of a radio resource control parameter; wherein configuring the user equipment to determine the mapping of the at least one power control command to the at least one power control loop is based on the user equipment being configured with the value of a radio resource control parameter.

[0153] Example 32. The apparatus of example 31, wherein the value of the radio resource control parameter comprises a type of sounding reference signal transmit power control physical downlink control channel group.

[0154] Example 33. The apparatus of example 32, wherein the type of sounding reference signal transmit power control physical downlink control channel group is TypeA, TypeB, or another type.

[0155] Example 34. The apparatus of any of examples 18 to 33, wherein the at least one power control loop is one or more of: a closed-loop power control, an open-loop power control, or a closed-loop power control adjustment state.

[0156] Example 35. A method including: determining a mapping of at least one power control command to at least one power control loop; and using, for determination oftransmission power for an uplink signal, at least one of the at least one power control command or the at least one power control loop.

[0157] Example 36. The method of example 35, wherein the mapping of the at least one power control command to the at least one power control loop comprises performing at least one of: mapping a first power control command in downlink control information to a power control loop, or mapping a second power control command to another power control loop, in response to downlink control information carrying at least two power control commands.

[0158] Example 37. The method of any of examples 35 to 36, wherein: the at least one power control command is applicable to one or more of: a group of cells, a group of carriers, or a group of component carriers; and / or at least one power control loop index associated with the at least one power control loop is applicable to the one or more of: the group of cells, the group of carriers, or the group of component carriers.

[0159] Example 38. The method of any of examples 35 to 37, further including: receiving downlink control information or a medium-access-control control-element, wherein the downlink control information or the medium-access-control control-element comprises at least one of: the at least one power control command or the at least one power control loop in at least one field or block, or as at least one bit of the at least one field or block; wherein determining the mapping of the at least one power control command to the at least one power control loop, or using, for determination of transmission power for the uplink signal, the at least one of the at least one power control command or the at least one power control loop is based on the received downlink control information or the medium-access-control controlelement.

[0160] Example 39. The method of example 38, wherein the at least one of: at least one power control command or the at least one power control loop is received per carrier or per component carrier or per bandwidth part.

[0161] Example 40. The method of any of examples 35 to 39, further including: receiving downlink control information comprising the at least one power control command; wherein determining the mapping of the at least one power control command to the at least one power control loop comprises mapping the at least one power control command to the at least one power control loop, based on the received downlink control information; wherein the at least one power control loop is associated with a triggered sounding reference signal resource orresource set; wherein the triggered sounding reference signal resource or resource set is triggered by the downlink control information comprising the at least one power control command, or by other downlink control information or by a medium-access-control controlelement.

[0162] Example 41. The method of any of examples 35 to 40, wherein: determining the mapping comprises mapping the at least one power control command to the at least one power control loop; and the at least one power control loop is associated with at least one of: a sounding reference signal resource set with a lower or higher index than another sounding reference signal resource set, a first or second transmission configuration indicator state, or a transmission configuration indicator state with a lower or higher index than another transmission configuration indicator state.

[0163] Example 42. The method of any of examples 35 to 41, further including: determining a configuration of a radio network temporary identifier; and receiving downlink control information or a physical downlink control channel scrambled with the radio network temporary identifier.

[0164] Example 43. The method of example 42, further including: in response to the downlink control information or the physical downlink control channel being scrambled with the radio network temporary identifier, performing at least one of: determining the mapping of the at least one power control command to the at least one power control loop with mapping the at least one power control command to the at least one power control loop, or determining one or more of: whether one or two power control commands, for at least one of: a component carrier, serving cell, or carrier, are present or absent in the downlink control information, or whether a power control loop indication is present or absent in the downlink control information.

[0165] Example 44. The method of any of examples 35 to 43, wherein determining the mapping of the at least one power control command to the at least one power control loop comprises mapping, for one or more sounding reference signal resources or one or more sounding reference resource sets that do not have an associated pathloss reference signal or a downlink reference signal, two or more power control commands of the at least one power control command to the at least one power control loop.

[0166] Example 45. The method of any of examples 35 to 44, further including: receivingdownlink control information that indicates whether the at least one power control command is provided for the at least one power control loop.

[0167] Example 46. The method of any of examples 35 to 45, wherein the uplink signal comprises a sounding reference signal.

[0168] Example 47. The method of any of examples 35 to 46, further including determining an association of one or more sounding reference signal resources or resource sets to the at least one power control loop based on at least one of the following: an uplink or joint transmission configuration indicator state applicable to or used for the one or more sounding reference signal resources or resource sets, an uplink or joint transmission configuration indicator state applicable to or used for a lowest index resource in the one or more resource sets, a higher layer configuration that associates the one or more sounding reference signal resources or resource sets to the at least one power control loop, or a radio resource control configuration that associates the one or more sounding reference signal resources or resource sets to the at least one power control loop.

[0169] Example 48. The method of any of examples 35 to 47, further including: determining the mapping of the at least one power control command to the at least one power control loop based on being configured with a value of a radio resource control parameter, or using, for the determination of transmission power for the uplink signal, the at least one of the at least one power control command or the at least one power control loop, based on being configured with the value of the radio resource control parameter.

[0170] Example 49. The method of example 48, wherein the value of the radio resource control parameter comprises a type of sounding reference signal transmit power control physical downlink control channel group.

[0171] Example 50. The method of example 49, wherein the type of sounding reference signal transmit power control physical downlink control channel group is TypeA, TypeB, or another Type.

[0172] Example 51. The method of any of examples 35 to 50, wherein the at least one power control loop is one or more of: a closed-loop power control, an open-loop power control, or a closed-loop power control adjustment state.

[0173] Example 52. A method including: transmitting, to a user equipment, at least one power control command; and configuring the user equipment to determine a mapping of the at least one power control command to at least one power control loop.

[0174] Example 53. The method of example 52, wherein configuring the user equipment to determine the mapping of the at least one power control command to the at least one power control loop comprises performing at least one of: configuring the user equipment to map a first power control command in downlink control information to a power control loop, or configuring the user equipment to map a second power control command to another power control loop, in response to downlink control information carrying at least two power control commands.

[0175] Example 54. The method of any of examples 52 to 53, wherein: the at least one power control command is applicable to one or more of: a group of cells, a group of carriers, or a group of component carriers; and / or at least one power control loop index associated with the at least one power control loop is applicable to the one or more of: the group of cells, the group of carriers, or the group of component carriers.

[0176] Example 55. The method of any of examples 52 to 54, further including: transmitting, to the user equipment, downlink control information or a medium-access-control control-element, wherein the downlink control information or the medium-access-control control-element comprises at least one of: the at least one power control command or the at least one power control loop in at least one field or block, or as at least one bit of the at least one field or block; wherein configuring the user equipment to determine the mapping of the at least one power control command to at least one power control loop is based on the transmitted downlink control information or the medium-access-control control-element.

[0177] Example 56. The method of example 55, wherein the at least one of: the at least one power control command or the at least one power control loop is transmitted per carrier or per component carrier or per bandwidth part.

[0178] Example 57. The method of any of examples 52 to 56, further including: transmitting, to the user equipment, downlink control information comprising the at least one power control command; wherein the downlink control information causes the user equipment to map the at least one power control command to the at least one power control loop; wherein the at least one power control loop corresponds to or is associated with atriggered sounding reference signal resource or resource set; wherein the triggered sounding reference signal resource or resource set is triggered by the downlink control information comprising the at least one power control command, or by other downlink control information or by a medium-access-control control-element transmitted with an apparatus.

[0179] Example 58. The method of any of examples 52 to 57, wherein the at least one power control loop is associated with at least one of: a sounding reference signal resource set with a lower or higher index than another sounding reference signal resource set, a first or second transmission configuration indicator state, or a transmission configuration indicator state with a lower or higher index than another transmission configuration indicator state.

[0180] Example 59. The method of any of examples 52 to 58, further including: configuring the user equipment with a radio network temporary identifier; and transmitting, to the user equipment, downlink control information or a physical downlink control channel scrambled with the radio network temporary identifier.

[0181] Example 60. The method of example 59, wherein the downlink control information or the physical downlink control channel being scrambled with the radio network temporary identifier causes the user equipment to perform at least one of: mapping the at least one power control command to the at least one power control loop, or determining one or more of: whether one or two power control commands, for at least one of: a component carrier, serving cell, or carrier, are present or absent in the downlink control information, or whether a power control loop indication is present or absent in the downlink control information.

[0182] Example 61. The method of any of examples 52 to 60, further including: configuring the user equipment to map, for one or more sounding reference signal resources or one or more sounding reference resource sets that do not have an associated pathloss reference signal or a downlink reference signal, two or more power control commands of the at least one power control command to the at least one power control loop.

[0183] Example 62. The method of any of examples 52 to 61, further including: transmitting, to the user equipment, downlink control information that indicates whether the at least one power control command is provided for the at least one power control loop.

[0184] Example 63. The method of any of examples 52 to 62, further including: configuring the user equipment to use, for determination of transmission power for an uplink signal, atleast one of: the at least one power control command or the at least one power control loop; wherein the uplink signal comprises a sounding reference signal.

[0185] Example 64. The method of any of examples 52 to 63, further including configuring the user equipment to determine an association of one or more sounding reference signal resources or resource sets to the at least one power control loop based on at least one of the following: an uplink or joint transmission configuration indicator state applicable to or used for the one or more sounding reference signal resources or resource sets, an uplink or joint transmission configuration indicator state applicable to or used for a lowest index resource in the one or more resource sets, a higher layer configuration that associates the one or more sounding reference signal resources or resource sets to the at least one power control loop, or a radio resource control configuration that associates the one or more sounding reference signal resources or resource sets to the at least one power control loop.

[0186] Example 65. The method of any of examples 52 to 64, further including: configuring the user equipment with a value of a radio resource control parameter; wherein configuring the user equipment to determine the mapping of the at least one power control command to the at least one power control loop is based on the user equipment being configured with the value of a radio resource control parameter.

[0187] Example 66. The method of example 65, wherein the value of the radio resource control parameter comprises a type of sounding reference signal transmit power control physical downlink control channel group.

[0188] Example 67. The method of example 66, wherein the type of sounding reference signal transmit power control physical downlink control channel group is TypeA, TypeB, or another type.

[0189] Example 68. The method of any of examples 52 to 67, wherein the at least one power control loop is one or more of: a closed-loop power control, an open-loop power control, or a closed-loop power control adjustment state.

[0190] Example 69. An apparatus including: means for determining a mapping of at least one power control command to at least one power control loop; and means for using, for determination of transmission power for an uplink signal, at least one of the at least one power control command or the at least one power control loop.

[0191] Example 70. An apparatus including: means for transmitting, to a user equipment, at least one power control command; and means for configuring the user equipment to determine a mapping of the at least one power control command to at least one power control loop.

[0192] Example 71. A computer readable medium including instructions stored thereon for performing at least the following: determining a mapping of at least one power control command to at least one power control loop; and using, for determination of transmission power for an uplink signal, at least one of the at least one power control command or the at least one power control loop.

[0193] Example 72. The computer readable medium of example 71, wherein the mapping of the at least one power control command to the at least one power control loop comprises performing at least one of: mapping a first power control command in downlink control information to a power control loop, or mapping a second power control command to another power control loop, in response to downlink control information carrying at least two power control commands.

[0194] Example 73. The computer readable medium of any of examples 71 to 72, wherein: the at least one power control command is applicable to one or more of: a group of cells, a group of carriers, or a group of component carriers; and / or at least one power control loop index associated with the at least one power control loop is applicable to the one or more of: the group of cells, the group of carriers, or the group of component carriers.

[0195] Example 74. A computer readable medium including instructions stored thereon for performing at least the following: transmitting, to a user equipment, at least one power control command; and configuring the user equipment to determine a mapping of the at least one power control command to at least one power control loop.

[0196] Example 75. The computer readable medium of example 74, wherein configuring the user equipment to determine the mapping of the at least one power control command to the at least one power control loop comprises performing at least one of: configuring the user equipment to map a first power control command in downlink control information to a power control loop, or configuring the user equipment to map a second power control command to another power control loop, in response to downlink control information carrying at least two power control commands.

[0197] Example 76. The computer readable medium of any of examples 74 to 75, wherein: the at least one power control command is applicable to one or more of: a group of cells, a group of carriers, or a group of component carriers; and / or at least one power control loop index associated with the at least one power control loop is applicable to the one or more of: the group of cells, the group of carriers, or the group of component carriers.

[0198] Example 77. An apparatus including means for performing a method according to any one of examples 35 to 51 or 87 to 90.

[0199] Example 78. An apparatus including means for performing a method according to any one of examples 52 to 68 or 91 to 94.

[0200] Example 79. The apparatus of any of examples 1 to 17, wherein the at least one memory stores instructions that, when executed by the at least one processor, cause the apparatus to perform at least one of the following, in response to an uplink carrier or component carrier being configured with two power control loops, and with two power control commands being indicated in downlink control information: map a first power control command to a first power control loop, and map a second power control command to a second power control loop, wherein the first power control loop or the second power control loop corresponds to the power control loop with a lower or higher index, or to the power control loop corresponding to a sounding reference signal resource set or transmission configuration indicator state with a lower or higher index, or to the power control loop corresponding to a sounding reference signal resource with a lowest index of the sounding reference signal resource set with the lower or higher index, or map a power control command to a power control loop in response to at least one sounding reference signal resource set associated to the power control loop being triggered, and determine to not map the power control command to the power control loop in response to the at least one sounding reference signal resource set associated to the power control loop not being triggered.

[0201] Example 80. The apparatus of any of examples 1 to 17 or 79, wherein the at least one memory stores instructions that, when executed by the at least one processor, cause the apparatus to perform at least one of the following, in response to an uplink carrier or component carrier being configured with two power control loops, and with one power control command being indicated in downlink control information: map the power control command to the power control loop associated with one or more triggered sounding referencesignal resource sets, or map the power control command to the power control loop associated to a first sounding reference resource set, or to a sounding reference signal resource set with a lower or higher index, or to a sounding reference signal resource set with a transmission configuration indicator state with a lower or higher index, or to a lowest index sounding reference signal resource of the sounding reference signal resource set with the lower or higher index, in response to at least two sounding reference signal resource sets being triggered and the at least two sounding reference signal resource sets corresponding to different power control loops of the two power control loops, or map the power control command to the two power control loops, or map the power control command to the power control loop with a lower or higher index, or to a configured or default power control loop, in response to no sounding reference signal resource set being triggered, or determine to not map the power control command to any power control loop, in response to no sounding reference signal resource set being triggered.

[0202] Example 81. The apparatus of any of examples 1 to 17 or 79 to 80, wherein the at least one memory stores instructions that, when executed by the at least one processor, cause the apparatus to: receive a configuration, wherein the configuration is received per component carrier, or per carrier, or per cell, or per group of component carriers, or per group of carriers, or per group of cells; wherein the configuration indicates at least one of: whether one power control command is present in downlink control information, whether two power control commands are present in downlink control information, or whether no power control command is present in downlink control information.

[0203] Example 82. The apparatus of example 81 , wherein the configuration is received via radio resource control signaling.

[0204] Example 83. The apparatus of any of examples 18 to 34, wherein the at least one memory stores instructions that, when executed by the at least one processor, cause the apparatus to perform at least one of the following, in response to an uplink carrier or component carrier being configured with two power control loops, and in response to transmission of downlink control information indicating two power control commands: configure the user equipment to map a first power control command to a first power control loop, and map a second power control command to a second power control loop, wherein the first power control loop or the second power control loop corresponds to the power control loop with a lower or higher index, or to the power control loop corresponding to a soundingreference signal resource set or transmission configuration indicator state with a lower or higher index, or to the power control loop corresponding to a sounding reference signal resource with a lowest index of the sounding reference signal resource set with the lower or higher index, or configure the user equipment to map a power control command to a power control loop in response to at least one sounding reference signal resource set associated to the power control loop being triggered, and determine to not map the power control command to the power control loop in response to the at least one sounding reference signal resource set associated to the power control loop not being triggered.

[0205] Example 84. The apparatus of any of examples 18 to 34 or 83, wherein the at least one memory stores instructions that, when executed by the at least one processor, cause the apparatus to perform at least one of the following, in response to an uplink carrier or component carrier being configured with two power control loops, and in response to transmitting downlink control information with one power control command being indicated: configure the user equipment to map the power control command to the power control loop associated with one or more triggered sounding reference signal resource sets, or configure the user equipment to map the power control command to the power control loop associated to a first sounding reference resource set, or to a sounding reference signal resource set with a lower or higher index, or to a sounding reference signal resource set with a transmission configuration indicator state with a lower or higher index, or to a lowest index sounding reference signal resource of the sounding reference signal resource set with the lower or higher index, in response to at least two sounding reference signal resource sets being triggered and the at least two sounding reference signal resource sets corresponding to different power control loops of the two power control loops, or configure the user equipment to map the power control command to the two power control loops, or configure the user equipment to map the power control command to the power control loop with a lower or higher index, or to a configured or default power control loop, in response to no sounding reference signal resource set being triggered, or configure the user equipment to not map the power control command to any power control loop, in response to no sounding reference signal resource set being triggered.

[0206] Example 85. The apparatus of any of examples 18 to 34 or 83 to 84, wherein the at least one memory stores instructions that, when executed by the at least one processor, cause the apparatus to: transmit a configuration to the user equipment, wherein the configuration istransmitted per component carrier, or per carrier, or per cell, or per group of component carriers, or per group of carriers, or per group of cells; wherein the configuration indicates at least one of: whether one power control command is present in downlink control information, whether two power control commands are present in downlink control information, or whether no power control command is present in downlink control information.

[0207] Example 86. The apparatus of example 85, wherein the configuration is transmitted via radio resource control signaling.

[0208] Example 87. The method of any of examples 35 to 51, further comprising performing at least one of the following, in response to an uplink carrier or component carrier being configured with two power control loops, and with two power control commands being indicated in downlink control information: mapping a first power control command to a first power control loop, and mapping a second power control command to a second power control loop, wherein the first power control loop or the second power control loop corresponds to the power control loop with a lower or higher index, or to the power control loop corresponding to a sounding reference signal resource set or transmission configuration indicator state with a lower or higher index, or to the power control loop corresponding to a sounding reference signal resource with a lowest index of the sounding reference signal resource set with the lower or higher index, or mapping a power control command to a power control loop in response to at least one sounding reference signal resource set associated to the power control loop being triggered, and determining to not map the power control command to the power control loop in response to the at least one sounding reference signal resource set associated to the power control loop not being triggered.

[0209] Example 88. The method of any of examples 35 to 51 or 87, further comprising performing at least one of the following, in response to an uplink carrier or component carrier being configured with two power control loops, and with one power control command being indicated in downlink control information: mapping the power control command to the power control loop associated with one or more triggered sounding reference signal resource sets, or mapping the power control command to the power control loop associated to a first sounding reference resource set, or to a sounding reference signal resource set with a lower or higher index, or to a sounding reference signal resource set with a transmission configuration indicator state with a lower or higher index, or to a lowest index sounding reference signal resource of the sounding reference signal resource set with the lower or higher index, inresponse to at least two sounding reference signal resource sets being triggered and the at least two sounding reference signal resource sets corresponding to different power control loops of the two power control loops, or mapping the power control command to the two power control loops, or mapping the power control command to the power control loop with a lower or higher index, or to a configured or default power control loop, in response to no sounding reference signal resource set being triggered, or determining to not map the power control command to any power control loop, in response to no sounding reference signal resource set being triggered.

[0210] Example 89. The method of any of examples 35 to 51 or 87 to 88, further comprising: receiving a configuration, wherein the configuration is received per component carrier, or per carrier, or per cell, or per group of component carriers, or per group of carriers, or per group of cells; wherein the configuration indicates at least one of: whether one power control command is present in downlink control information, whether two power control commands are present in downlink control information, or whether no power control command is present in downlink control information.

[0211] Example 90. The method of example 89, wherein the configuration is received via radio resource control signaling.

[0212] Example 91. The method of any of examples 52 to 68, further comprising performing at least one of the following, in response to an uplink carrier or component carrier being configured with two power control loops, and in response to transmission of downlink control information indicating two power control commands: configuring the user equipment to map a first power control command to a first power control loop, and map a second power control command to a second power control loop, wherein the first power control loop or the second power control loop corresponds to the power control loop with a lower or higher index, or to the power control loop corresponding to a sounding reference signal resource set or transmission configuration indicator state with a lower or higher index, or to the power control loop corresponding to a sounding reference signal resource with a lowest index of the sounding reference signal resource set with the lower or higher index, or configuring the user equipment to map a power control command to a power control loop in response to at least one sounding reference signal resource set associated to the power control loop being triggered, and determine to not map the power control command to the power control loop in response to the at least one sounding reference signal resource set associated to the powercontrol loop not being triggered.

[0213] Example 92. The apparatus of any of examples 52 to 68 or 91, further comprising performing at least one of the following, in response to an uplink carrier or component carrier being configured with two power control loops, and in response to transmitting downlink control information with one power control command being indicated: configuring the user equipment to map the power control command to the power control loop associated with one or more triggered sounding reference signal resource sets, or configuring the user equipment to map the power control command to the power control loop associated to a first sounding reference resource set, or to a sounding reference signal resource set with a lower or higher index, or to a sounding reference signal resource set with a transmission configuration indicator state with a lower or higher index, or to a lowest index sounding reference signal resource of the sounding reference signal resource set with the lower or higher index, in response to at least two sounding reference signal resource sets being triggered and the at least two sounding reference signal resource sets corresponding to different power control loops of the two power control loops, or configuring the user equipment to map the power control command to the two power control loops, or configuring the user equipment to map the power control command to the power control loop with a lower or higher index, or to a configured or default power control loop, in response to no sounding reference signal resource set being triggered, or configuring the user equipment to not map the power control command to any power control loop, in response to no sounding reference signal resource set being triggered.

[0214] Example 93. The apparatus of any of examples 52 to 68 or 91 to 92, further comprising: transmitting a configuration to the user equipment, wherein the configuration is transmitted per component carrier, or per carrier, or per cell, or per group of component carriers, or per group of carriers, or per group of cells; wherein the configuration indicates at least one of: whether one power control command is present in downlink control information, whether two power control commands are present in downlink control information, or whether no power control command is present in downlink control information.

[0215] Example 94. The apparatus of example 93, wherein the configuration is transmitted via radio resource control signaling.

[0216] References to a ‘computer’, ‘processor’, etc. should be understood to encompass notonly computers having different architectures such as single / multi-processor architectures and sequential or parallel architectures but also specialized circuits such as field- programmable gate arrays (FPGAs), application specific circuits (ASICs), signal processing devices and other processing circuitry. References to computer program, instructions, code etc. should be understood to encompass software for a programmable processor or firmware such as, for example, the programmable content of a hardware device whether instructions for a processor, or configuration settings for a fixed-function device, gate array or programmable logic device etc.

[0217] The memories as described herein may be implemented using any suitable data storage technology, such as semiconductor based memory devices, flash memory, magnetic memory devices and systems, optical memory devices and systems, non-transitory memory, transitory memory, fixed memory and removable memory. The memories may comprise a database for storing data.

[0218] As used herein, the term ‘circuitry’ may refer to the following: (a) hardware circuit implementations, such as implementations in analog and / or digital circuitry, and (b) combinations of circuits and software (and / or firmware), such as (as applicable): (i) a combination of processor(s) or (ii) portions of processor(s) / software including digital signal processor(s), software, and memories that work together to cause an apparatus to perform various functions, and (c) circuits, such as a microprocessor(s) or a portion of a microprocessor(s), that require software or firmware for operation, even if the software or firmware is not physically present. As a further example, as used herein, the term ‘circuitry’ would also cover an implementation of merely a processor (or multiple processors) or a portion of a processor and its (or their) accompanying software and / or firmware. The term ‘circuitry’ would also cover, for example and if applicable to the particular element, a baseband integrated circuit or applications processor integrated circuit for a mobile phone or a similar integrated circuit in a server, a cellular network device, or another network device.

[0219] It should be understood that the foregoing description is only illustrative. Various alternatives and modifications may be devised by those skilled in the art. For example, features recited in the various dependent claims could be combined with each other in any suitable combination(s). In addition, features from different example embodiments described above could be selectively combined into a new example embodiment. Accordingly, this description is intended to embrace all such alternatives, modifications and variances whichfall within the scope of the appended claims.

[0220] The following acronyms and abbreviations that may be found in the specification and / or the drawing figures are given as follows (the abbreviations and acronyms may be appended / combined with each other or with other characters using e.g. a dash, hyphen, slash, letter, or number, and may be case insensitive):2TA 2 timing advance3 GPP third generation partnership project4G fourth generation5G fifth generation5GC 5G core networkAMF access and mobility management functionASIC application-specific integrated circuitBPRE bits per resource elementBWP bandwidth partCC component carrierCD compact / computer discCMAX maximum configured UE transmit power config configure, configurationCPU central processing unitCU central unit or centralized unitDCI downlink control informationDL downlinkDSP digital signal processorDU distributed unitDVD digital versatile disc eNB evolved Node B (e.g., an LTE base station)EN-DC E-UTRAN new radio - dual connectivity en-gNB node providing NR user plane and control plane protocol terminations towards the UE, and acting as a secondary node in EN- DCE-UTRA evolved UMTS terrestrial radio access, i.e., the LTE radio access technologyE-UTRAN E-UTRA networkFl interface between the CU and the DUFPGA field-programmable gate array gNB base station for 5G / NR, i.e., a node providing NR user plane and control plane protocol terminations towards the UE, and connected via the NG interface to the 5GCIAB integrated access and backhaulI / F interfaceI / O input / outputLMF location management functionLTE long term evolution (4G)MAC medium access controlMAC CE medium access control control element mDCI multiple DOMIMO multiple input multiple outputMME mobility management entityMRO mobility robustness optimizationM-TRP multiple TRPNCE network control element ng or NG new generation ng-eNB new generation eNBNG-RAN new generation radio access networkNR new radioN / W networkOAM operations, administration and maintenancePC power controlPDA personal digital assistantPDCCH physical downlink control channelPDCP packet data convergence protocolPDSCH physical downlink shared channelPHY physical layerPL pathlossPRACH physical random access channelPUCCH physical uplink control channelPUSCH physical uplink shared channelQCL quasi-colocationRAM random access memoryRAN radio access networkRB resource blockRel releaseRLC radio link controlRNTI radio network temporary identifierROM read-only memoryRRC radio resource controlRS reference signalRSRP reference signal received powerRU radio unitRx receive, or receiver, or receptionRxP reception pointSDAP service data adaptation protocol sDCI signal downlink control informationSGW serving gatewaySMF session management functionSON self-organizing / optimizing networkSRS sounding reference signalS-TRP single TRPTCI transmission configuration indicatorTF transport formatTPC transmit power controlTRP transmission reception pointTS technical specificationTx transmit, or transmitter, or transmissionUAV unmanned aerial vehicleUE user equipment (e.g., a wireless, typically mobile device)UI user interfaceUL uplinkUMTS Universal Mobile Telecommunications SystemUPF user plane functionUSB universal serial busUTRAN UMTS terrestrial radio access networkX2 network interface between RAN nodes and between RAN and the core networkXn network interface between NG-RAN nodes

Claims

CLAIMSWhat is claimed is:

1. An apparatus comprising: at least one processor; and at least one memory storing instructions that, when executed by the at least one processor, cause the apparatus at least to: determine a mapping of at least one power control command to at least one power control loop; and use, for determination of transmission power for an uplink signal, at least one of the at least one power control command or the at least one power control loop.

2. The apparatus of claim 1, wherein the mapping of the at least one power control command to the at least one power control loop comprises performing at least one of: mapping a first power control command in downlink control information to a power control loop, or mapping a second power control command to another power control loop, in response to downlink control information carrying at least two power control commands.

3. The apparatus of any of claims 1 to 2, wherein: the at least one power control command is applicable to one or more of: a group of cells, a group of carriers, or a group of component carriers; and / or at least one power control loop index associated with the at least one power control loop is applicable to the one or more of: the group of cells, the group of carriers, or the group of component carriers.

4. The apparatus of any of claims 1 to 3, wherein the at least one memory stores instructions that, when executed by the at least one processor, cause the apparatus to: receive downlink control information or a medium-access-control controlelement, wherein the downlink control information or the medium-access-control control-element comprises at least one of: the at least one power control command or the at least one power control loop in at least one field or block, or as at least one bit of the at least one field or block; wherein determining the mapping of the at least one power control command to the at least one power control loop, or using, for determination of transmission power for the uplink signal, the at least one of the at least one power control command or the at least one power control loop is based on the received downlink control information or the medium-access-control control-element.

5. The apparatus of claim 4, wherein the at least one of: at least one power control command or the at least one power control loop is received per carrier or per component carrier or per bandwidth part.

6. The apparatus of any of claims 1 to 5, wherein the at least one memory stores instructions that, when executed by the at least one processor, cause the apparatus to: receive downlink control information comprising the at least one power control command; wherein determining the mapping of the at least one power control command to the at least one power control loop comprises mapping the at least one power control command to the at least one power control loop, based on the received downlink control information; wherein the at least one power control loop is associated with a triggered sounding reference signal resource or resource set; wherein the triggered sounding reference signal resource or resource set is triggered by the downlink control information comprising the at least one power control command, or by other downlink control information or by a medium-access-controlcontrol-element.

7. The apparatus of any of claims 1 to 6, wherein: determining the mapping comprises mapping the at least one power control command to the at least one power control loop; and the at least one power control loop is associated with at least one of: a sounding reference signal resource set with a lower or higher index than another sounding reference signal resource set, a first or second transmission configuration indicator state, or a transmission configuration indicator state with a lower or higher index than another transmission configuration indicator state.

8. The apparatus of any of claims 1 to 7, wherein the at least one memory stores instructions that, when executed by the at least one processor, cause the apparatus to: determine a configuration of a radio network temporary identifier; and receive downlink control information or a physical downlink control channel scrambled with the radio network temporary identifier.

9. The apparatus of claim 8, wherein the at least one memory stores instructions that, when executed by the at least one processor, cause the apparatus to: in response to the downlink control information or the physical downlink control channel being scrambled with the radio network temporary identifier, perform at least one of: determine the mapping of the at least one power control command to the at least one power control loop with mapping the at least one power control command to the at least one power control loop, or determine one or more of: whether one or two power control commands, for at least one of: a component carrier, serving cell, or carrier, are present or absent in the downlink control information, or whether a power control loop indication is present or absent in the downlink control information.

10. The apparatus of any of claims 1 to 9, wherein determining the mapping of the atleast one power control command to the at least one power control loop comprises mapping, for one or more sounding reference signal resources or one or more sounding reference resource sets that do not have an associated pathloss reference signal or a downlink reference signal, two or more power control commands of the at least one power control command to the at least one power control loop.

11. The apparatus of any of claims 1 to 10, wherein the at least one memory stores instructions that, when executed by the at least one processor, cause the apparatus to: receive downlink control information that indicates whether the at least one power control command is provided for the at least one power control loop.

12. The apparatus of any of claims 1 to 11, wherein the uplink signal comprises a sounding reference signal.

13. The apparatus of any of claims 1 to 12, wherein the at least one memory stores instructions that, when executed by the at least one processor, cause the apparatus to determine an association of one or more sounding reference signal resources or resource sets to the at least one power control loop based on at least one of the following: an uplink or joint transmission configuration indicator state applicable to or used for the one or more sounding reference signal resources or resource sets, an uplink or joint transmission configuration indicator state applicable to or used for a lowest index resource in the one or more resource sets, a higher layer configuration that associates the one or more sounding reference signal resources or resource sets to the at least one power control loop, or a radio resource control configuration that associates the one or more sounding reference signal resources or resource sets to the at least one power control loop.

14. The apparatus of any of claims 1 to 13, wherein the at least one memory stores instructions that, when executed by the at least one processor, cause the apparatus to: determine the mapping of the at least one power control command to the at least one power control loop based on being configured with a value of a radio resourcecontrol parameter, or use, for the determination of transmission power for the uplink signal, the at least one of the at least one power control command or the at least one power control loop, based on being configured with the value of the radio resource control parameter.

15. The apparatus of claim 14, wherein the value of the radio resource control parameter comprises a type of sounding reference signal transmit power control physical downlink control channel group.

16. The apparatus of claim 15, wherein the type of sounding reference signal transmit power control physical downlink control channel group is TypeA, TypeB, or another Type.

17. The apparatus of any of claims 1 to 16, wherein the at least one power control loop is one or more of: a closed-loop power control, an open-loop power control, or a closed- loop power control adjustment state.

18. An apparatus comprising: at least one processor; and at least one memory storing instructions that, when executed by the at least one processor, cause the apparatus at least to: transmit, to a user equipment, at least one power control command; and configure the user equipment to determine a mapping of the at least one power control command to at least one power control loop.

19. The apparatus of claim 18, wherein configuring the user equipment to determine the mapping of the at least one power control command to the at least one power control loop comprises performing at least one of: configuring the user equipment to map a first power control command in downlink control information to a power control loop, or configuring the user equipment to map a second power control command toanother power control loop, in response to downlink control information carrying at least two power control commands.

20. The apparatus of any of claims 18 to 19, wherein: the at least one power control command is applicable to one or more of: a group of cells, a group of carriers, or a group of component carriers; and / or at least one power control loop index associated with the at least one power control loop is applicable to the one or more of: the group of cells, the group of carriers, or the group of component carriers.

21. The apparatus of any of claims 18 to 20, wherein the at least one memory stores instructions that, when executed by the at least one processor, cause the apparatus to: transmit, to the user equipment, downlink control information or a mediumaccess-control control-element, wherein the downlink control information or the medium-access-control control-element comprises at least one of: the at least one power control command or the at least one power control loop in at least one field or block, or as at least one bit of the at least one field or block; wherein configuring the user equipment to determine the mapping of the at least one power control command to at least one power control loop is based on the transmitted downlink control information or the medium-access-control controlelement.

22. The apparatus of claim 21, wherein the at least one of: the at least one power control command or the at least one power control loop is transmitted per carrier or per component carrier or per bandwidth part.

23. The apparatus of any of claims 18 to 22, wherein the at least one memory stores instructions that, when executed by the at least one processor, cause the apparatus to: transmit, to the user equipment, downlink control information comprising the at least one power control command; wherein the downlink control information causes the user equipment to map theat least one power control command to the at least one power control loop; wherein the at least one power control loop corresponds to or is associated with a triggered sounding reference signal resource or resource set; wherein the triggered sounding reference signal resource or resource set is triggered by the downlink control information comprising the at least one power control command, or by other downlink control information or by a medium-access-control control-element transmitted with the apparatus.

24. The apparatus of any of claims 18 to 23, wherein the at least one power control loop is associated with at least one of: a sounding reference signal resource set with a lower or higher index than another sounding reference signal resource set, a first or second transmission configuration indicator state, or a transmission configuration indicator state with a lower or higher index than another transmission configuration indicator state.

25. The apparatus of any of claims 18 to 24, wherein the at least one memory stores instructions that, when executed by the at least one processor, cause the apparatus to: configure the user equipment with a radio network temporary identifier; and transmit, to the user equipment, downlink control information or a physical downlink control channel scrambled with the radio network temporary identifier.

26. The apparatus of claim 25, wherein the downlink control information or the physical downlink control channel being scrambled with the radio network temporary identifier causes the user equipment to perform at least one of: mapping the at least one power control command to the at least one power control loop, or determining one or more of: whether one or two power control commands, for at least one of: a component carrier, serving cell, or carrier, are present or absent in the downlink control information, or whether a power control loop indication is present or absent in the downlink control information.

27. The apparatus of any of claims 18 to 26, wherein the at least one memory stores instructions that, when executed by the at least one processor, cause the apparatus to: configure the user equipment to map, for one or more sounding reference signal resources or one or more sounding reference resource sets that do not have an associated pathloss reference signal or a downlink reference signal, two or more power control commands of the at least one power control command to the at least one power control loop.

28. The apparatus of any of claims 18 to 27, wherein the at least one memory stores instructions that, when executed by the at least one processor, cause the apparatus to: transmit, to the user equipment, downlink control information that indicates whether the at least one power control command is provided for the at least one power control loop.

29. The apparatus of any of claims 18 to 28, wherein the at least one memory stores instructions that, when executed by the at least one processor, cause the apparatus to: configure the user equipment to use, for determination of transmission power for an uplink signal, at least one of: the at least one power control command or the at least one power control loop; wherein the uplink signal comprises a sounding reference signal.

30. The apparatus of any of claims 18 to 29, wherein the at least one memory stores instructions that, when executed by the at least one processor, cause the apparatus to configure the user equipment to determine an association of one or more sounding reference signal resources or resource sets to the at least one power control loop based on at least one of the following: an uplink or joint transmission configuration indicator state applicable to or used for the one or more sounding reference signal resources or resource sets, an uplink or joint transmission configuration indicator state applicable to or used for a lowest index resource in the one or more resource sets,a higher layer configuration that associates the one or more sounding reference signal resources or resource sets to the at least one power control loop, or a radio resource control configuration that associates the one or more sounding reference signal resources or resource sets to the at least one power control loop.

31. The apparatus of any of claims 18 to 30, wherein the at least one memory stores instructions that, when executed by the at least one processor, cause the apparatus to: configure the user equipment with a value of a radio resource control parameter; wherein configuring the user equipment to determine the mapping of the at least one power control command to the at least one power control loop is based on the user equipment being configured with the value of a radio resource control parameter.

32. The apparatus of claim 31, wherein the value of the radio resource control parameter comprises a type of sounding reference signal transmit power control physical downlink control channel group.

33. The apparatus of claim 32, wherein the type of sounding reference signal transmit power control physical downlink control channel group is TypeA, TypeB, or another type.

34. The apparatus of any of claims 18 to 33, wherein the at least one power control loop is one or more of: a closed-loop power control, an open-loop power control, or a closed- loop power control adjustment state.

35. A method comprising: determining a mapping of at least one power control command to at least one power control loop; and using, for determination of transmission power for an uplink signal, at least one of the at least one power control command or the at least one power control loop.

36. A method comprising: transmitting, to a user equipment, at least one power control command; andconfiguring the user equipment to determine a mapping of the at least one power control command to at least one power control loop.

37. An apparatus comprising: means for determining a mapping of at least one power control command to at least one power control loop; and means for using, for determination of transmission power for an uplink signal, at least one of the at least one power control command or the at least one power control loop.

38. An apparatus comprising: means for transmitting, to a user equipment, at least one power control command; and means for configuring the user equipment to determine a mapping of the at least one power control command to at least one power control loop.

39. A computer readable medium comprising instructions stored thereon for performing at least the following: determining a mapping of at least one power control command to at least one power control loop; and using, for determination of transmission power for an uplink signal, at least one of the at least one power control command or the at least one power control loop.

40. The computer readable medium of claim 39, wherein the mapping of the at least one power control command to the at least one power control loop comprises performing at least one of: mapping a first power control command in downlink control information to a power control loop, or mapping a second power control command to another power control loop, in response to downlink control information carrying at least two power controlcommands.

41. The computer readable medium of any of claims 39 to 40, wherein: the at least one power control command is applicable to one or more of: a group of cells, a group of carriers, or a group of component carriers; and / or at least one power control loop index associated with the at least one power control loop is applicable to the one or more of: the group of cells, the group of carriers, or the group of component carriers.

42. A computer readable medium comprising instructions stored thereon for performing at least the following: transmitting, to a user equipment, at least one power control command; and configuring the user equipment to determine a mapping of the at least one power control command to at least one power control loop.

43. The computer readable medium of claim 42, wherein configuring the user equipment to determine the mapping of the at least one power control command to the at least one power control loop comprises performing at least one of: configuring the user equipment to map a first power control command in downlink control information to a power control loop, or configuring the user equipment to map a second power control command to another power control loop, in response to downlink control information carrying at least two power control commands.

44. The computer readable medium of any of claims 42 to 43, wherein: the at least one power control command is applicable to one or more of: a group of cells, a group of carriers, or a group of component carriers; and / or at least one power control loop index associated with the at least one power control loop is applicable to the one or more of: the group of cells, the group of carriers, or the group of component carriers.

45. The apparatus of any of claims 1 to 17, wherein the at least one memory stores instructions that, when executed by the at least one processor, cause the apparatus to perform at least one of the following, in response to an uplink carrier or component carrier being configured with two power control loops, and with two power control commands being indicated in downlink control information: map a first power control command to a first power control loop, and map a second power control command to a second power control loop, wherein the first power control loop or the second power control loop corresponds to the power control loop with a lower or higher index, or to the power control loop corresponding to a sounding reference signal resource set or transmission configuration indicator state with a lower or higher index, or to the power control loop corresponding to a sounding reference signal resource with a lowest index of the sounding reference signal resource set with the lower or higher index, or map a power control command to a power control loop in response to at least one sounding reference signal resource set associated to the power control loop being triggered, and determine to not map the power control command to the power control loop in response to the at least one sounding reference signal resource set associated to the power control loop not being triggered.

46. The apparatus of any of claims 1 to 17 or 45, wherein the at least one memory stores instructions that, when executed by the at least one processor, cause the apparatus to perform at least one of the following, in response to an uplink carrier or component carrier being configured with two power control loops, and with one power control command being indicated in downlink control information: map the power control command to the power control loop associated with one or more triggered sounding reference signal resource sets, or map the power control command to the power control loop associated to a first sounding reference resource set, or to a sounding reference signal resource set with a lower or higher index, or to a sounding reference signal resource set with a transmission configuration indicator state with a lower or higher index, or to a lowest index sounding reference signal resource of the sounding reference signal resource set with the loweror higher index, in response to at least two sounding reference signal resource sets being triggered and the at least two sounding reference signal resource sets corresponding to different power control loops of the two power control loops, or map the power control command to the two power control loops, or map the power control command to the power control loop with a lower or higher index, or to a configured or default power control loop, in response to no sounding reference signal resource set being triggered, or determine to not map the power control command to any power control loop, in response to no sounding reference signal resource set being triggered.

47. The apparatus of any of claims 1 to 17 or 45 to 46, wherein the at least one memory stores instructions that, when executed by the at least one processor, cause the apparatus to: receive a configuration, wherein the configuration is received per component carrier, or per carrier, or per cell, or per group of component carriers, or per group of carriers, or per group of cells; wherein the configuration indicates at least one of: whether one power control command is present in downlink control information, whether two power control commands are present in downlink control information, or whether no power control command is present in downlink control information.

48. The apparatus of claim 47, wherein the configuration is received via radio resource control signaling.

49. The apparatus of any of claims 18 to 34, wherein the at least one memory stores instructions that, when executed by the at least one processor, cause the apparatus to perform at least one of the following, in response to an uplink carrier or component carrier being configured with two power control loops, and in response to transmission of downlink control information indicating two power control commands: configure the user equipment to map a first power control command to a firstpower control loop, and map a second power control command to a second power control loop, wherein the first power control loop or the second power control loop corresponds to the power control loop with a lower or higher index, or to the power control loop corresponding to a sounding reference signal resource set or transmission configuration indicator state with a lower or higher index, or to the power control loop corresponding to a sounding reference signal resource with a lowest index of the sounding reference signal resource set with the lower or higher index, or configure the user equipment to map a power control command to a power control loop in response to at least one sounding reference signal resource set associated to the power control loop being triggered, and determine to not map the power control command to the power control loop in response to the at least one sounding reference signal resource set associated to the power control loop not being triggered.

50. The apparatus of any of claims 18 to 34 or 49, wherein the at least one memory stores instructions that, when executed by the at least one processor, cause the apparatus to perform at least one of the following, in response to an uplink carrier or component carrier being configured with two power control loops, and in response to transmitting downlink control information with one power control command being indicated: configure the user equipment to map the power control command to the power control loop associated with one or more triggered sounding reference signal resource sets, or configure the user equipment to map the power control command to the power control loop associated to a first sounding reference resource set, or to a sounding reference signal resource set with a lower or higher index, or to a sounding reference signal resource set with a transmission configuration indicator state with a lower or higher index, or to a lowest index sounding reference signal resource of the sounding reference signal resource set with the lower or higher index, in response to at least two sounding reference signal resource sets being triggered and the at least two sounding reference signal resource sets corresponding to different power control loops of the two power control loops, or configure the user equipment to map the power control command to the twopower control loops, or configure the user equipment to map the power control command to the power control loop with a lower or higher index, or to a configured or default power control loop, in response to no sounding reference signal resource set being triggered, or configure the user equipment to not map the power control command to any power control loop, in response to no sounding reference signal resource set being triggered.

51. The apparatus of any of claims 18 to 34 or 49 to 50, wherein the at least one memory stores instructions that, when executed by the at least one processor, cause the apparatus to: transmit a configuration to the user equipment, wherein the configuration is transmitted per component carrier, or per carrier, or per cell, or per group of component carriers, or per group of carriers, or per group of cells; wherein the configuration indicates at least one of: whether one power control command is present in downlink control information, whether two power control commands are present in downlink control information, or whether no power control command is present in downlink control information.

52. The apparatus of claim 51, wherein the configuration is transmitted via radio resource control signaling.

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