Uplink power control for uplink dense deployment scenarios
By employing MAC-CE and DCI messages for power control, the UE adjusts transmission power based on pathloss offsets and RSRP, addressing power misalignment issues in uplink dense deployments and enhancing communication efficiency.
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2023-11-08
- Publication Date
- 2026-04-02
AI Technical Summary
In uplink dense deployment scenarios, existing power control techniques face challenges due to larger TPC messages and potential transmission power misalignment between uplink-dedicated network entities and user equipment (UE) in wireless communications systems, particularly when downlink reference signals are not transmitted by uplink-dedicated network entities.
The UE receives Medium Access Control-Control Element (MAC-CE) messages or Downlink Control Information (DCI) to determine transmission power for uplink messages, using close loop power control parameters, pathloss offsets, or RSRP-based calculations to adjust power levels effectively.
This approach enables accurate and efficient power control for uplink messages in dense deployment scenarios, reducing transmission power misalignment and optimizing communication performance.
Smart Images

Figure CN2023130418_02042026_PF_FP_ABST
Abstract
Description
UPLINK POWER CONTROL FOR UPLINK DENSE DEPLOYMENT SCENARIOS
[0001] FIELD OF TECHNOLOGY
[0002] The following relates to wireless communications, including uplink power control for uplink dense deployment scenarios.BACKGROUND
[0003] Wireless communications systems are widely deployed to provide various types of communication content such as voice, video, packet data, messaging, broadcast, and so on. These systems may be capable of supporting communication with multiple users by sharing the available system resources (e.g., time, frequency, and power) . Examples of such multiple-access systems include fourth generation (4G) systems such as Long Term Evolution (LTE) systems, LTE-Advanced (LTE-A) systems, or LTE-A Pro systems, and fifth generation (5G) systems which may be referred to as New Radio (NR) systems. These systems may employ technologies such as code division multiple access (CDMA) , time division multiple access (TDMA) , frequency division multiple access (FDMA) , orthogonal FDMA (OFDMA) , or discrete Fourier transform spread orthogonal frequency division multiplexing (DFT-S-OFDM) . A wireless multiple-access communications system may include one or more base stations, each supporting wireless communication for communication devices, which may be known as user equipment (UE) .SUMMARY
[0004] The described techniques relate to improved methods, systems, devices, and apparatuses that support uplink power control for uplink dense deployment scenarios. For example, the described techniques may enable a user equipment (UE) to determine a transmission power for uplink messages in the uplink dense deployment scenario. For example, the UE may receive a medium access control-control element (MAC-CE) message indicating transmit power control (TPC) information for one or more uplink messages to an uplink-dedicated network entity. For example, the MAC-CE message may indicate a close loop power control parameter, a pathloss offset relative to a pathloss associated with one or more downlink reference signals, or an open loop power control parameter. Additionally, or alternatively, the UE may receive a downlink control information (DCI) message indicating a pathloss offset change or a relative open loop power control parameter change relative to an initial pathloss offset value or open loop power control parameter. Additionally, or alternatively, the UE may receive an indication of a reference signal received power (RSRP) associated with an uplink reference signal, and may calculate a pathloss of an uplink channel (e.g., and accordingly a transmission power) based on the RSRP.
[0005] A method for wireless communications by a UE is described. The method may include receiving a MAC-CE message including TPC information for one or more uplink messages and transmitting the one or more uplink messages based on the TPC information.
[0006] A UE for wireless communications is described. The UE may include one or more memories storing processor executable code, and one or more processors coupled with the one or more memories. The one or more processors may individually or collectively operable to execute the code to cause the UE to receive a MAC-CE message including TPC information for one or more uplink messages and transmit the one or more uplink messages based on the TPC information.
[0007] Another UE for wireless communications is described. The UE may include means for receiving a MAC-CE message including TPC information for one or more uplink messages and means for transmitting the one or more uplink messages based on the TPC information.
[0008] A non-transitory computer-readable medium storing code for wireless communications is described. The code may include instructions executable by a processor to receive a MAC-CE message including TPC information for one or more uplink messages and transmit the one or more uplink messages based on the TPC information.
[0009] In some examples of the method, UEs, and non-transitory computer-readable medium described herein, the TPC information includes an update to a close loop power control parameter.
[0010] In some examples of the method, UEs, and non-transitory computer-readable medium described herein, the TPC information further includes a close loop index associated with the TPC information.
[0011] In some examples of the method, UEs, and non-transitory computer-readable medium described herein, the TPC information includes an update to a pathloss offset parameter and the pathloss offset parameter may be an offset from a pathloss associated with a downlink reference signal.
[0012] Some examples of the method, UEs, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for receiving a configuration or indication of the downlink reference signal associated with the pathloss offset parameter.
[0013] In some examples of the method, UEs, and non-transitory computer-readable medium described herein, the downlink reference signal may be one of a set of downlink pathloss reference signals and the downlink reference signal may be associated with a lowest pathloss reference signal ID of the set of downlink pathloss reference signals, a highest pathloss reference signal ID of the set of downlink pathloss reference signals, a lowest pathloss value of the set of downlink pathloss reference signals, a highest pathloss value of the set of downlink pathloss reference signals, a downlink pathloss reference signal associated with a lowest transmission configuration indicator (TCI) state of a set of active TCI states associated with the set of downlink pathloss reference signals, or a downlink pathloss reference signal associated with a highest TCI state of the set of active TCI states associated with the set of downlink pathloss reference signals.
[0014] In some examples of the method, UEs, and non-transitory computer-readable medium described herein, the TPC information includes an update to an open loop power control parameter.
[0015] In some examples of the method, UEs, and non-transitory computer-readable medium described herein, the TPC information may be common to a set of multiple uplink channels or uplink signals or may be specific to one uplink channel or uplink signal.
[0016] In some examples of the method, UEs, and non-transitory computer-readable medium described herein, the TPC information includes an indication of an absolute TPC parameter value or an indication of an offset from a previous TPC parameter value.
[0017] Some examples of the method, UEs, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for receiving a radio resource control (RRC) message indicating whether the TPC information includes the indication of the absolute TPC parameter value or the indication of the offset from the previous TPC parameter value.
[0018] In some examples of the method, UEs, and non-transitory computer-readable medium described herein, the TPC information may be associated with an ID and the previous TPC parameter value may be an initial TPC parameter value associated with the ID or a last received TPC parameter value associated with the ID.
[0019] Some examples of the method, UEs, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for receiving a control message indicating the initial TPC parameter value.
[0020] In some examples of the method, UEs, and non-transitory computer-readable medium described herein, the MAC-CE message indicates an ID of a TCI state, a pathloss reference signal, an open loop power control parameter set, a BWP, a serving cell, a sounding reference signal (SRS) resource set, a physical uplink control channel (PUCCH) resource, or some combination thereof associated with the TPC information.
[0021] Some examples of the method, UEs, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for receiving a RRC message indicating whether the UE will receive one or more DCI messages including additional TPC information.
[0022] Some examples of the method, UEs, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for receiving one or more DCI messages including additional TPC information, where transmitting the one or more uplink messages includes and transmitting the one or more uplink messages based on the additional TPC information.
[0023] In some examples of the method, UEs, and non-transitory computer-readable medium described herein, the one or more uplink messages include one or more PUCCH messages, one or more physical uplink shared channel (PUSCH) messages, one or more SRSs, or some combination thereof.
[0024] A method for wireless communications by a UE is described. The method may include receiving a DCI message indicating a TPC parameter for one or more uplink messages, where the TPC parameter includes one of an update to an open loop power control parameter relative to a previous open loop power control parameter or an update to a pathloss offset parameter, where the pathloss offset parameter is an offset from a pathloss associated with a downlink reference signal and transmitting the one or more uplink messages based on the TPC parameter.
[0025] A UE for wireless communications is described. The UE may include one or more memories storing processor executable code, and one or more processors coupled with the one or more memories. The one or more processors may individually or collectively operable to execute the code to cause the UE to receive a DCI message indicating a TPC parameter for one or more uplink messages, where the TPC parameter includes one of an update to an open loop power control parameter relative to a previous open loop power control parameter or an update to a pathloss offset parameter, where the pathloss offset parameter is an offset from a pathloss associated with a downlink reference signal and transmit the one or more uplink messages based on the TPC parameter.
[0026] Another UE for wireless communications is described. The UE may include means for receiving a DCI message indicating a TPC parameter for one or more uplink messages, where the TPC parameter includes one of an update to an open loop power control parameter relative to a previous open loop power control parameter or an update to a pathloss offset parameter, where the pathloss offset parameter is an offset from a pathloss associated with a downlink reference signal and means for transmitting the one or more uplink messages based on the TPC parameter.
[0027] A non-transitory computer-readable medium storing code for wireless communications is described. The code may include instructions executable by a processor to receive a DCI message indicating a TPC parameter for one or more uplink messages, where the TPC parameter includes one of an update to an open loop power control parameter relative to a previous open loop power control parameter or an update to a pathloss offset parameter, where the pathloss offset parameter is an offset from a pathloss associated with a downlink reference signal and transmit the one or more uplink messages based on the TPC parameter.
[0028] Some examples of the method, UEs, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for receiving a configuration or indication of the downlink reference signal.
[0029] In some examples of the method, UEs, and non-transitory computer-readable medium described herein, the downlink reference signal may be one of a set of downlink pathloss reference signals and the downlink reference signal may be associated with a lowest pathloss reference signal ID of the set of downlink pathloss reference signals, a highest pathloss reference signal ID of the set of downlink pathloss reference signals, a lowest pathloss value of the set of downlink pathloss reference signals, a highest pathloss value of the set of downlink pathloss reference signals, a downlink pathloss reference signal associated with a lowest TCI state of a set of active TCI states associated with the set of downlink pathloss reference signals, or a downlink pathloss reference signal associated with a highest TCI state of the set of active TCI states associated with the set of downlink pathloss reference signals.
[0030] In some examples of the method, UEs, and non-transitory computer-readable medium described herein, the update to the pathloss offset parameter includes an indication of an absolute pathloss offset value or an indication of an offset from a previous pathloss offset value.
[0031] Some examples of the method, UEs, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for receiving a RRC message indicating whether the offset includes the indication of the absolute pathloss offset value or the indication of the offset from the previous pathloss offset value.
[0032] In some examples of the method, UEs, and non-transitory computer-readable medium described herein, the update to the open loop power control parameter may be associated with an ID and the previous open loop power control parameter includes an initial open loop control parameter associated with the ID or a last received open loop power control parameter associated with the ID.
[0033] In some examples of the method, UEs, and non-transitory computer-readable medium described herein, the DCI message indicates an ID of a TCI state, a pathloss reference signal, an open loop power control parameter set, a BWP, a serving cell, a SRS resource set, a PUCCH resource, or some combination thereof associated with the TPC parameter.
[0034] Some examples of the method, UEs, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for receiving a RRC message indicating whether the UE will receive one or more additional DCI messages including additional TPC information.
[0035] Some examples of the method, UEs, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for receiving one or more additional DCI messages including additional TPC information, where transmitting the one or more uplink messages includes and transmitting the one or more uplink messages based on the additional TPC information.
[0036] In some examples of the method, UEs, and non-transitory computer-readable medium described herein, the DCI message may be a scheduling DCI or a group common DCI.
[0037] In some examples of the method, UEs, and non-transitory computer-readable medium described herein, the one or more uplink messages include one or more PUCCH messages, one or more PUSCH messages, one or more SRSs, or some combination thereof.
[0038] A method for wireless communications by a UE is described. The method may include transmitting an uplink reference signal, receiving an indication of a RSRP associated with the uplink reference signal, and transmitting one or more uplink messages, where a transmit power associated with the one or more uplink messages is based on the RSRP.
[0039] A UE for wireless communications is described. The UE may include one or more memories storing processor executable code, and one or more processors coupled with the one or more memories. The one or more processors may individually or collectively operable to execute the code to cause the UE to transmit an uplink reference signal, receive an indication of a RSRP associated with the uplink reference signal, and transmit one or more uplink messages, where a transmit power associated with the one or more uplink messages is based on the RSRP.
[0040] Another UE for wireless communications is described. The UE may include means for transmitting an uplink reference signal, means for receiving an indication of a RSRP associated with the uplink reference signal, and means for transmitting one or more uplink messages, where a transmit power associated with the one or more uplink messages is based on the RSRP.
[0041] A non-transitory computer-readable medium storing code for wireless communications is described. The code may include instructions executable by a processor to transmit an uplink reference signal, receive an indication of a RSRP associated with the uplink reference signal, and transmit one or more uplink messages, where a transmit power associated with the one or more uplink messages is based on the RSRP.
[0042] Some examples of the method, UEs, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for calculating an uplink pathloss associated with the uplink reference signal based on the RSRP, where the transmit power may be based on the uplink pathloss.
[0043] In some examples of the method, UEs, and non-transitory computer-readable medium described herein, the one or more uplink messages include one or more PUCCH messages, one or more PUSCH messages, one or more SRSs, or some combination thereof.
[0044] Some examples of the method, UEs, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for receiving an indication that the uplink reference signal may be associated with one or more PUCCH messages, one or more PUSCH messages, one or more SRSs, or some combination thereof.
[0045] Some examples of the method, UEs, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for receiving a control message indicating the uplink reference signal from a set of uplink reference signals.
[0046] In some examples of the method, UEs, and non-transitory computer-readable medium described herein, the indication of the RSRP may be received via a MAC-CE message or via a DCI message.
[0047] Some examples of the method, UEs, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for transmitting, prior to receiving the indication of the RSRP, one or more initial uplink messages based on a default pathloss value.
[0048] Some examples of the method, UEs, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for determining the default pathloss value based on a pathloss associated with a downlink reference signal.
[0049] In some examples of the method, UEs, and non-transitory computer-readable medium described herein, the default pathloss value may be zero.
[0050] Some examples of the method, UEs, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for receiving a control message indicating a respective default pathloss value associated with each of a set of uplink reference signals, the set of uplink reference signals including the uplink reference signal, where the default pathloss value may be the respective default pathloss value associated with the uplink reference signal.BRIEF DESCRIPTION OF THE DRAWINGS
[0051] FIG. 1 shows an example of a wireless communications system that supports uplink power control for uplink dense deployment scenarios in accordance with one or more aspects of the present disclosure.
[0052] FIG. 2 shows an example of a wireless communications system that supports uplink power control for uplink dense deployment scenarios in accordance with one or more aspects of the present disclosure.
[0053] FIG. 3 shows an example of a slot diagram that supports uplink power control for uplink dense deployment scenarios in accordance with one or more aspects of the present disclosure.
[0054] FIG. 4 shows an example of a slot diagram that supports uplink power control for uplink dense deployment scenarios in accordance with one or more aspects of the present disclosure.
[0055] FIG. 5 shows an example of a process flow that supports uplink power control for uplink dense deployment scenarios in accordance with one or more aspects of the present disclosure.
[0056] FIG. 6 shows an example of a process flow that supports uplink power control for uplink dense deployment scenarios in accordance with one or more aspects of the present disclosure.
[0057] FIG. 7 shows an example of a process flow that supports uplink power control for uplink dense deployment scenarios in accordance with one or more aspects of the present disclosure.
[0058] FIGs. 8 and 9 show block diagrams of devices that support uplink power control for uplink dense deployment scenarios in accordance with one or more aspects of the present disclosure.
[0059] FIG. 10 shows a block diagram of a communications manager that supports uplink power control for uplink dense deployment scenarios in accordance with one or more aspects of the present disclosure.
[0060] FIG. 11 shows a diagram of a system including a device that supports uplink power control for uplink dense deployment scenarios in accordance with one or more aspects of the present disclosure.
[0061] FIGs. 12 through 17 show flowcharts illustrating methods that support uplink power control for uplink dense deployment scenarios in accordance with one or more aspects of the present disclosure.DETAILED DESCRIPTION
[0062] In some wireless communications systems, a user equipment (UE) may receive a downlink reference signal from a network entity for calculating a pathloss associated with a channel between the UE and the network entity. In some examples, the UE may use the pathloss to determine an uplink transmit power for one or more uplink messages (e.g., physical uplink shared channel (PUSCH) messages, physical uplink control channel (PUCCH) messages, sounding reference signals (SRSs) ) to the network entity. In some cases, however, the wireless communications system may have an uplink dense deployment including a central network entity for transmitting downlink signaling to the UE and multiple network entities dedicated for receiving uplink signaling from the UE (e.g., and not transmitting downlink signaling) . In such cases, the uplink-dedicated network entities may not transmit the downlink reference signals.
[0063] Accordingly, the UE may instead transmit one or more uplink reference signals to an uplink-dedicated network entity via an uplink channel. The uplink-dedicated network entity may indicate channel information (e.g., pathloss, reference signal received power (RSRP) ) based on the uplink reference signal to the central network entity, and the central network entity may configure the UE with a pathloss information or other transmit power control (TPC) information based on the channel information. However, such techniques may involve larger TPC messages than some other power control techniques, and a TPC field in a downlink control information (DCI) used for other power control techniques may therefore be too small to adequately indicate the TPC. Additionally, in some examples, the UE may miss one or more DCI messages, which may result in a transmission power misalignment between the uplink-dedicated network entity and the UE.
[0064] Techniques described herein may allow for the UE to determine a transmission power for uplink messages in the uplink dense deployment. For example, the UE may receive a medium access control-control element (MAC-CE) indicating TPC information for one or more uplink messages to the uplink-dedicated network entity. The MAC-CE may indicate a close loop power control parameter, a pathloss offset (e.g., relative to a pathloss associated with one or more downlink reference signals) , or an open loop power control parameter. Additionally, or alternatively, the UE may receive a DCI message indicating a pathloss offset change or a relative open loop power control parameter change (e.g., relative to an initial pathloss offset value or open loop power control parameter) . Additionally, or alternatively, the UE may receive an indication of the RSRP associated with the uplink reference signal, and may calculate a pathloss of the uplink channel (e.g., and accordingly a transmission power) based on the RSRP.
[0065] Aspects of the disclosure are initially described in the context of wireless communications systems. Aspects of the disclosure are further illustrated by and described with reference to slot diagrams and process flow diagrams. Aspects of the disclosure are further illustrated by and described with reference to apparatus diagrams, system diagrams, and flowcharts that relate to uplink power control for uplink dense deployment scenarios.
[0066] FIG. 1 shows an example of a wireless communications system 100 that supports uplink power control for uplink dense deployment scenarios in accordance with one or more aspects of the present disclosure. The wireless communications system 100 may include one or more network entities 105, one or more UEs 115, and a core network 130. In some examples, the wireless communications system 100 may be a Long Term Evolution (LTE) network, an LTE-Advanced (LTE-A) network, an LTE-A Pro network, a New Radio (NR) network, or a network operating in accordance with other systems and radio technologies, including future systems and radio technologies not explicitly mentioned herein.
[0067] The network entities 105 may be dispersed throughout a geographic area to form the wireless communications system 100 and may include devices in different forms or having different capabilities. In various examples, a network entity 105 may be referred to as a network element, a mobility element, a radio access network (RAN) node, or network equipment, among other nomenclature. In some examples, network entities 105 and UEs 115 may wirelessly communicate via one or more communication links 125 (e.g., a radio frequency (RF) access link) . For example, a network entity 105 may support a coverage area 110 (e.g., a geographic coverage area) over which the UEs 115 and the network entity 105 may establish one or more communication links 125. The coverage area 110 may be an example of a geographic area over which a network entity 105 and a UE 115 may support the communication of signals according to one or more radio access technologies (RATs) .
[0068] The UEs 115 may be dispersed throughout a coverage area 110 of the wireless communications system 100, and each UE 115 may be stationary, or mobile, or both at different times. The UEs 115 may be devices in different forms or having different capabilities. Some example UEs 115 are illustrated in FIG. 1. The UEs 115 described herein may be capable of supporting communications with various types of devices, such as other UEs 115 or network entities 105, as shown in FIG. 1.
[0069] As described herein, a node of the wireless communications system 100, which may be referred to as a network node, or a wireless node, may be a network entity 105 (e.g., any network entity described herein) , a UE 115 (e.g., any UE described herein) , a network controller, an apparatus, a device, a computing system, one or more components, or another suitable processing entity configured to perform any of the techniques described herein. For example, a node may be a UE 115. As another example, a node may be a network entity 105. As another example, a first node may be configured to communicate with a second node or a third node. In one aspect of this example, the first node may be a UE 115, the second node may be a network entity 105, and the third node may be a UE 115. In another aspect of this example, the first node may be a UE 115, the second node may be a network entity 105, and the third node may be a network entity 105. In yet other aspects of this example, the first, second, and third nodes may be different relative to these examples. Similarly, reference to a UE 115, network entity 105, apparatus, device, computing system, or the like may include disclosure of the UE 115, network entity 105, apparatus, device, computing system, or the like being a node. For example, disclosure that a UE 115 is configured to receive information from a network entity 105 also discloses that a first node is configured to receive information from a second node.
[0070] In some examples, network entities 105 may communicate with the core network 130, or with one another, or both. For example, network entities 105 may communicate with the core network 130 via one or more backhaul communication links 120 (e.g., in accordance with an S1, N2, N3, or other interface protocol) . In some examples, network entities 105 may communicate with one another via a backhaul communication link 120 (e.g., in accordance with an X2, Xn, or other interface protocol) either directly (e.g., directly between network entities 105) or indirectly (e.g., via a core network 130) . In some examples, network entities 105 may communicate with one another via a midhaul communication link 162 (e.g., in accordance with a midhaul interface protocol) or a fronthaul communication link 168 (e.g., in accordance with a fronthaul interface protocol) , or any combination thereof. The backhaul communication links 120, midhaul communication links 162, or fronthaul communication links 168 may be or include one or more wired links (e.g., an electrical link, an optical fiber link) , one or more wireless links (e.g., a radio link, a wireless optical link) , among other examples or various combinations thereof. A UE 115 may communicate with the core network 130 via a communication link 155.
[0071] One or more of the network entities 105 described herein may include or may be referred to as a base station 140 (e.g., a base transceiver station, a radio base station, an NR base station, an access point, a radio transceiver, a NodeB, an eNodeB (eNB) , a next-generation NodeB or a giga-NodeB (either of which may be referred to as a gNB) , a 5G NB, a next-generation eNB (ng-eNB) , a Home NodeB, a Home eNodeB, or other suitable terminology) . In some examples, a network entity 105 (e.g., a base station 140) may be implemented in an aggregated (e.g., monolithic, standalone) base station architecture, which may be configured to utilize a protocol stack that is physically or logically integrated within a single network entity 105 (e.g., a single RAN node, such as a base station 140) .
[0072] In some examples, a network entity 105 may be implemented in a disaggregated architecture (e.g., a disaggregated base station architecture, a disaggregated RAN architecture) , which may be configured to utilize a protocol stack that is physically or logically distributed among two or more network entities 105, such as an integrated access backhaul (IAB) network, an open RAN (O-RAN) (e.g., a network configuration sponsored by the O-RAN Alliance) , or a virtualized RAN (vRAN) (e.g., a cloud RAN (C-RAN) ) . For example, a network entity 105 may include one or more of a central unit (CU) 160, a distributed unit (DU) 165, a radio unit (RU) 170, a RAN Intelligent Controller (RIC) 175 (e.g., a Near-Real Time RIC (Near-RT RIC) , a Non-Real Time RIC (Non-RT RIC) ) , a Service Management and Orchestration (SMO) 180 system, or any combination thereof. An RU 170 may also be referred to as a radio head, a smart radio head, a remote radio head (RRH) , a remote radio unit (RRU) , or a transmission reception point (TRP) . One or more components of the network entities 105 in a disaggregated RAN architecture may be co-located, or one or more components of the network entities 105 may be located in distributed locations (e.g., separate physical locations) . In some examples, one or more network entities 105 of a disaggregated RAN architecture may be implemented as virtual units (e.g., a virtual CU (VCU) , a virtual DU (VDU) , a virtual RU (VRU) ) .
[0073] The split of functionality between a CU 160, a DU 165, and an RU 170 is flexible and may support different functionalities depending on which functions (e.g., network layer functions, protocol layer functions, baseband functions, RF functions, and any combinations thereof) are performed at a CU 160, a DU 165, or an RU 170. For example, a functional split of a protocol stack may be employed between a CU 160 and a DU 165 such that the CU 160 may support one or more layers of the protocol stack and the DU 165 may support one or more different layers of the protocol stack. In some examples, the CU 160 may host upper protocol layer (e.g., layer 3 (L3) , layer 2 (L2) ) functionality and signaling (e.g., Radio Resource Control (RRC) , service data adaption protocol (SDAP) , Packet Data Convergence Protocol (PDCP) ) . The CU 160 may be connected to one or more DUs 165 or RUs 170, and the one or more DUs 165 or RUs 170 may host lower protocol layers, such as layer 1 (L1) (e.g., physical (PHY) layer) or L2 (e.g., radio link control (RLC) layer, medium access control (MAC) layer) functionality and signaling, and may each be at least partially controlled by the CU 160. Additionally, or alternatively, a functional split of the protocol stack may be employed between a DU 165 and an RU 170 such that the DU 165 may support one or more layers of the protocol stack and the RU 170 may support one or more different layers of the protocol stack. The DU 165 may support one or multiple different cells (e.g., via one or more RUs 170) . In some cases, a functional split between a CU 160 and a DU 165, or between a DU 165 and an RU 170 may be within a protocol layer (e.g., some functions for a protocol layer may be performed by one of a CU 160, a DU 165, or an RU 170, while other functions of the protocol layer are performed by a different one of the CU 160, the DU 165, or the RU 170) . A CU 160 may be functionally split further into CU control plane (CU-CP) and CU user plane (CU-UP) functions. A CU 160 may be connected to one or more DUs 165 via a midhaul communication link 162 (e.g., F1, F1-c, F1-u) , and a DU 165 may be connected to one or more RUs 170 via a fronthaul communication link 168 (e.g., open fronthaul (FH) interface) . In some examples, a midhaul communication link 162 or a fronthaul communication link 168 may be implemented in accordance with an interface (e.g., a channel) between layers of a protocol stack supported by respective network entities 105 that are in communication via such communication links.
[0074] In wireless communications systems (e.g., wireless communications system 100) , infrastructure and spectral resources for radio access may support wireless backhaul link capabilities to supplement wired backhaul connections, providing an IAB network architecture (e.g., to a core network 130) . In some cases, in an IAB network, one or more network entities 105 (e.g., IAB nodes 104) may be partially controlled by each other. One or more IAB nodes 104 may be referred to as a donor entity or an IAB donor. One or more DUs 165 or one or more RUs 170 may be partially controlled by one or more CUs 160 associated with a donor network entity 105 (e.g., a donor base station 140) . The one or more donor network entities 105 (e.g., IAB donors) may be in communication with one or more additional network entities 105 (e.g., IAB nodes 104) via supported access and backhaul links (e.g., backhaul communication links 120) . IAB nodes 104 may include an IAB mobile termination (IAB-MT) controlled (e.g., scheduled) by DUs 165 of a coupled IAB donor. An IAB-MT may include an independent set of antennas for relay of communications with UEs 115, or may share the same antennas (e.g., of an RU 170) of an IAB node 104 used for access via the DU 165 of the IAB node 104 (e.g., referred to as virtual IAB-MT (vIAB-MT) ) . In some examples, the IAB nodes 104 may include DUs 165 that support communication links with additional entities (e.g., IAB nodes 104, UEs 115) within the relay chain or configuration of the access network (e.g., downstream) . In such cases, one or more components of the disaggregated RAN architecture (e.g., one or more IAB nodes 104 or components of IAB nodes 104) may be configured to operate according to the techniques described herein.
[0075] In the case of the techniques described herein applied in the context of a disaggregated RAN architecture, one or more components of the disaggregated RAN architecture may be configured to support uplink power control for uplink dense deployment scenarios as described herein. For example, some operations described as being performed by a UE 115 or a network entity 105 (e.g., a base station 140) may additionally, or alternatively, be performed by one or more components of the disaggregated RAN architecture (e.g., IAB nodes 104, DUs 165, CUs 160, RUs 170, RIC 175, SMO 180) .
[0076] A UE 115 may include or may be referred to as a mobile device, a wireless device, a remote device, a handheld device, or a subscriber device, or some other suitable terminology, where the “device” may also be referred to as a unit, a station, a terminal, or a client, among other examples. A UE 115 may also include or may be referred to as a personal electronic device such as a cellular phone, a personal digital assistant (PDA) , a tablet computer, a laptop computer, or a personal computer. In some examples, a UE 115 may include or be referred to as a wireless local loop (WLL) station, an Internet of Things (IoT) device, an Internet of Everything (IoE) device, or a machine type communications (MTC) device, among other examples, which may be implemented in various objects such as appliances, or vehicles, meters, among other examples.
[0077] The UEs 115 described herein may be able to communicate with various types of devices, such as other UEs 115 that may sometimes act as relays as well as the network entities 105 and the network equipment including macro eNBs or gNBs, small cell eNBs or gNBs, or relay base stations, among other examples, as shown in FIG. 1.
[0078] The UEs 115 and the network entities 105 may wirelessly communicate with one another via one or more communication links 125 (e.g., an access link) using resources associated with one or more carriers. The term “carrier” may refer to a set of RF spectrum resources having a defined physical layer structure for supporting the communication links 125. For example, a carrier used for a communication link 125 may include a portion of a RF spectrum band (e.g., a bandwidth part (BWP) ) that is operated according to one or more physical layer channels for a given radio access technology (e.g., LTE, LTE-A, LTE-A Pro, NR) . Each physical layer channel may carry acquisition signaling (e.g., synchronization signals, system information) , control signaling that coordinates operation for the carrier, user data, or other signaling. The wireless communications system 100 may support communication with a UE 115 using carrier aggregation or multi-carrier operation. A UE 115 may be configured with multiple downlink component carriers and one or more uplink component carriers according to a carrier aggregation configuration. Carrier aggregation may be used with both frequency division duplexing (FDD) and time division duplexing (TDD) component carriers. Communication between a network entity 105 and other devices may refer to communication between the devices and any portion (e.g., entity, sub-entity) of a network entity 105. For example, the terms “transmitting, ” “receiving, ” or “communicating, ” when referring to a network entity 105, may refer to any portion of a network entity 105 (e.g., a base station 140, a CU 160, a DU 165, a RU 170) of a RAN communicating with another device (e.g., directly or via one or more other network entities 105) .
[0079] In some examples, such as in a carrier aggregation configuration, a carrier may also have acquisition signaling or control signaling that coordinates operations for other carriers. A carrier may be associated with a frequency channel (e.g., an evolved universal mobile telecommunication system terrestrial radio access (E-UTRA) absolute RF channel number (EARFCN) ) and may be identified according to a channel raster for discovery by the UEs 115. A carrier may be operated in a standalone mode, in which case initial acquisition and connection may be conducted by the UEs 115 via the carrier, or the carrier may be operated in a non-standalone mode, in which case a connection is anchored using a different carrier (e.g., of the same or a different radio access technology) .
[0080] The communication links 125 shown in the wireless communications system 100 may include downlink transmissions (e.g., forward link transmissions) from a network entity 105 to a UE 115, uplink transmissions (e.g., return link transmissions) from a UE 115 to a network entity 105, or both, among other configurations of transmissions. Carriers may carry downlink or uplink communications (e.g., in an FDD mode) or may be configured to carry downlink and uplink communications (e.g., in a TDD mode) .
[0081] A carrier may be associated with a particular bandwidth of the RF spectrum and, in some examples, the carrier bandwidth may be referred to as a “system bandwidth” of the carrier or the wireless communications system 100. For example, the carrier bandwidth may be one of a set of bandwidths for carriers of a particular radio access technology (e.g., 1.4, 3, 5, 10, 15, 20, 40, or 80 megahertz (MHz) ) . Devices of the wireless communications system 100 (e.g., the network entities 105, the UEs 115, or both) may have hardware configurations that support communications using a particular carrier bandwidth or may be configurable to support communications using one of a set of carrier bandwidths. In some examples, the wireless communications system 100 may include network entities 105 or UEs 115 that support concurrent communications using carriers associated with multiple carrier bandwidths. In some examples, each served UE 115 may be configured for operating using portions (e.g., a sub-band, a BWP) or all of a carrier bandwidth.
[0082] Signal waveforms transmitted via a carrier may be made up of multiple subcarriers (e.g., using multi-carrier modulation (MCM) techniques such as orthogonal frequency division multiplexing (OFDM) or discrete Fourier transform spread OFDM (DFT-S-OFDM) ) . In a system employing MCM techniques, a resource element may refer to resources of one symbol period (e.g., a duration of one modulation symbol) and one subcarrier, in which case the symbol period and subcarrier spacing may be inversely related. The quantity of bits carried by each resource element may depend on the modulation scheme (e.g., the order of the modulation scheme, the coding rate of the modulation scheme, or both) , such that a relatively higher quantity of resource elements (e.g., in a transmission duration) and a relatively higher order of a modulation scheme may correspond to a relatively higher rate of communication. A wireless communications resource may refer to a combination of an RF spectrum resource, a time resource, and a spatial resource (e.g., a spatial layer, a beam) , and the use of multiple spatial resources may increase the data rate or data integrity for communications with a UE 115.
[0083] One or more numerologies for a carrier may be supported, and a numerology may include a subcarrier spacing (Δf) and a cyclic prefix. A carrier may be divided into one or more BWPs having the same or different numerologies. In some examples, a UE 115 may be configured with multiple BWPs. In some examples, a single BWP for a carrier may be active at a given time and communications for the UE 115 may be restricted to one or more active BWPs.
[0084] The time intervals for the network entities 105 or the UEs 115 may be expressed in multiples of a basic time unit which may, for example, refer to a sampling period of Ts=1 / (Δfmax·Nf) seconds, for which Δfmax may represent a supported subcarrier spacing, and Nf may represent a supported discrete Fourier transform (DFT) size. Time intervals of a communications resource may be organized according to radio frames each having a specified duration (e.g., 10 milliseconds (ms) ) . Each radio frame may be identified by a system frame number (SFN) (e.g., ranging from 0 to 1023) .
[0085] Each frame may include multiple consecutively numbered subframes or slots, and each subframe or slot may have the same duration. In some examples, a frame may be divided (e.g., in the time domain) into subframes, and each subframe may be further divided into a quantity of slots. Alternatively, each frame may include a variable quantity of slots, and the quantity of slots may depend on subcarrier spacing. Each slot may include a quantity of symbol periods (e.g., depending on the length of the cyclic prefix prepended to each symbol period) . In some wireless communications systems 100, a slot may further be divided into multiple mini-slots associated with one or more symbols. Excluding the cyclic prefix, each symbol period may be associated with one or more (e.g., Nf) sampling periods. The duration of a symbol period may depend on the subcarrier spacing or frequency band of operation.
[0086] A subframe, a slot, a mini-slot, or a symbol may be the smallest scheduling unit (e.g., in the time domain) of the wireless communications system 100 and may be referred to as a transmission time interval (TTI) . In some examples, the TTI duration (e.g., a quantity of symbol periods in a TTI) may be variable. Additionally, or alternatively, the smallest scheduling unit of the wireless communications system 100 may be dynamically selected (e.g., in bursts of shortened TTIs (sTTIs) ) .
[0087] Physical channels may be multiplexed for communication using a carrier according to various techniques. A physical control channel and a physical data channel may be multiplexed for signaling via a downlink carrier, for example, using one or more of time division multiplexing (TDM) techniques, frequency division multiplexing (FDM) techniques, or hybrid TDM-FDM techniques. A control region (e.g., a control resource set (CORESET) ) for a physical control channel may be defined by a set of symbol periods and may extend across the system bandwidth or a subset of the system bandwidth of the carrier. One or more control regions (e.g., CORESETs) may be configured for a set of the UEs 115. For example, one or more of the UEs 115 may monitor or search control regions for control information according to one or more search space sets, and each search space set may include one or multiple control channel candidates in one or more aggregation levels arranged in a cascaded manner. An aggregation level for a control channel candidate may refer to an amount of control channel resources (e.g., control channel elements (CCEs) ) associated with encoded information for a control information format having a given payload size. Search space sets may include common search space sets configured for sending control information to multiple UEs 115 and UE-specific search space sets for sending control information to a specific UE 115.
[0088] A network entity 105 may provide communication coverage via one or more cells, for example a macro cell, a small cell, a hot spot, or other types of cells, or any combination thereof. The term “cell” may refer to a logical communication entity used for communication with a network entity 105 (e.g., using a carrier) and may be associated with an identifier for distinguishing neighboring cells (e.g., a physical cell identifier (PCID) , a virtual cell identifier (VCID) , or others) . In some examples, a cell also may refer to a coverage area 110 or a portion of a coverage area 110 (e.g., a sector) over which the logical communication entity operates. Such cells may range from smaller areas (e.g., a structure, a subset of structure) to larger areas depending on various factors such as the capabilities of the network entity 105. For example, a cell may be or include a building, a subset of a building, or exterior spaces between or overlapping with coverage areas 110, among other examples.
[0089] A macro cell generally covers a relatively large geographic area (e.g., several kilometers in radius) and may allow unrestricted access by the UEs 115 with service subscriptions with the network provider supporting the macro cell. A small cell may be associated with a lower-powered network entity 105 (e.g., a lower-powered base station 140) , as compared with a macro cell, and a small cell may operate using the same or different (e.g., licensed, unlicensed) frequency bands as macro cells. Small cells may provide unrestricted access to the UEs 115 with service subscriptions with the network provider or may provide restricted access to the UEs 115 having an association with the small cell (e.g., the UEs 115 in a closed subscriber group (CSG) , the UEs 115 associated with users in a home or office) . A network entity 105 may support one or multiple cells and may also support communications via the one or more cells using one or multiple component carriers.
[0090] In some examples, a carrier may support multiple cells, and different cells may be configured according to different protocol types (e.g., MTC, narrowband IoT (NB-IoT) , enhanced mobile broadband (eMBB) ) that may provide access for different types of devices.
[0091] In some examples, a network entity 105 (e.g., a base station 140, an RU 170) may be movable and therefore provide communication coverage for a moving coverage area 110. In some examples, different coverage areas 110 associated with different technologies may overlap, but the different coverage areas 110 may be supported by the same network entity 105. In some other examples, the overlapping coverage areas 110 associated with different technologies may be supported by different network entities 105. The wireless communications system 100 may include, for example, a heterogeneous network in which different types of the network entities 105 provide coverage for various coverage areas 110 using the same or different radio access technologies.
[0092] The wireless communications system 100 may be configured to support ultra-reliable communications or low-latency communications, or various combinations thereof. For example, the wireless communications system 100 may be configured to support ultra-reliable low-latency communications (URLLC) . The UEs 115 may be designed to support ultra-reliable, low-latency, or critical functions. Ultra-reliable communications may include private communication or group communication and may be supported by one or more services such as push-to-talk, video, or data. Support for ultra-reliable, low-latency functions may include prioritization of services, and such services may be used for public safety or general commercial applications. The terms ultra-reliable, low-latency, and ultra-reliable low-latency may be used interchangeably herein.
[0093] In some examples, a UE 115 may be configured to support communicating directly with other UEs 115 via a device-to-device (D2D) communication link 135 (e.g., in accordance with a peer-to-peer (P2P) , D2D, or sidelink protocol) . In some examples, one or more UEs 115 of a group that are performing D2D communications may be within the coverage area 110 of a network entity 105 (e.g., a base station 140, an RU 170) , which may support aspects of such D2D communications being configured by (e.g., scheduled by) the network entity 105. In some examples, one or more UEs 115 of such a group may be outside the coverage area 110 of a network entity 105 or may be otherwise unable to or not configured to receive transmissions from a network entity 105. In some examples, groups of the UEs 115 communicating via D2D communications may support a one-to-many (1: M) system in which each UE 115 transmits to each of the other UEs 115 in the group. In some examples, a network entity 105 may facilitate the scheduling of resources for D2D communications. In some other examples, D2D communications may be carried out between the UEs 115 without an involvement of a network entity 105.
[0094] The core network 130 may provide user authentication, access authorization, tracking, Internet Protocol (IP) connectivity, and other access, routing, or mobility functions. The core network 130 may be an evolved packet core (EPC) or 5G core (5GC) , which may include at least one control plane entity that manages access and mobility (e.g., a mobility management entity (MME) , an access and mobility management function (AMF) ) and at least one user plane entity that routes packets or interconnects to external networks (e.g., a serving gateway (S-GW) , a Packet Data Network (PDN) gateway (P-GW) , or a user plane function (UPF) ) . The control plane entity may manage non-access stratum (NAS) functions such as mobility, authentication, and bearer management for the UEs 115 served by the network entities 105 (e.g., base stations 140) associated with the core network 130. User IP packets may be transferred through the user plane entity, which may provide IP address allocation as well as other functions. The user plane entity may be connected to IP services 150 for one or more network operators. The IP services 150 may include access to the Internet, Intranet (s) , an IP Multimedia Subsystem (IMS) , or a Packet-Switched Streaming Service.
[0095] The wireless communications system 100 may operate using one or more frequency bands, which may be in the range of 300 megahertz (MHz) to 300 gigahertz (GHz) . Generally, the region from 300 MHz to 3 GHz is known as the ultra-high frequency (UHF) region or decimeter band because the wavelengths range from approximately one decimeter to one meter in length. UHF waves may be blocked or redirected by buildings and environmental features, which may be referred to as clusters, but the waves may penetrate structures sufficiently for a macro cell to provide service to the UEs 115 located indoors. Communications using UHF waves may be associated with smaller antennas and shorter ranges (e.g., less than 100 kilometers) compared to communications using the smaller frequencies and longer waves of the high frequency (HF) or very high frequency (VHF) portion of the spectrum below 300 MHz.
[0096] The wireless communications system 100 may utilize both licensed and unlicensed RF spectrum bands. For example, the wireless communications system 100 may employ License Assisted Access (LAA) , LTE-Unlicensed (LTE-U) radio access technology, or NR technology using an unlicensed band such as the 5 GHz industrial, scientific, and medical (ISM) band. While operating using unlicensed RF spectrum bands, devices such as the network entities 105 and the UEs 115 may employ carrier sensing for collision detection and avoidance. In some examples, operations using unlicensed bands may be based on a carrier aggregation configuration in conjunction with component carriers operating using a licensed band (e.g., LAA) . Operations using unlicensed spectrum may include downlink transmissions, uplink transmissions, P2P transmissions, or D2D transmissions, among other examples.
[0097] A network entity 105 (e.g., a base station 140, an RU 170) or a UE 115 may be equipped with multiple antennas, which may be used to employ techniques such as transmit diversity, receive diversity, multiple-input multiple-output (MIMO) communications, or beamforming. The antennas of a network entity 105 or a UE 115 may be located within one or more antenna arrays or antenna panels, which may support MIMO operations or transmit or receive beamforming. For example, one or more base station antennas or antenna arrays may be co-located at an antenna assembly, such as an antenna tower. In some examples, antennas or antenna arrays associated with a network entity 105 may be located at diverse geographic locations. A network entity 105 may include an antenna array with a set of rows and columns of antenna ports that the network entity 105 may use to support beamforming of communications with a UE 115. Likewise, a UE 115 may include one or more antenna arrays that may support various MIMO or beamforming operations. Additionally, or alternatively, an antenna panel may support RF beamforming for a signal transmitted via an antenna port.
[0098] Beamforming, which may also be referred to as spatial filtering, directional transmission, or directional reception, is a signal processing technique that may be used at a transmitting device or a receiving device (e.g., a network entity 105, a UE 115) to shape or steer an antenna beam (e.g., a transmit beam, a receive beam) along a spatial path between the transmitting device and the receiving device. Beamforming may be achieved by combining the signals communicated via antenna elements of an antenna array such that some signals propagating along particular orientations with respect to an antenna array experience constructive interference while others experience destructive interference. The adjustment of signals communicated via the antenna elements may include a transmitting device or a receiving device applying amplitude offsets, phase offsets, or both to signals carried via the antenna elements associated with the device. The adjustments associated with each of the antenna elements may be defined by a beamforming weight set associated with a particular orientation (e.g., with respect to the antenna array of the transmitting device or receiving device, or with respect to some other orientation) .
[0099] A network entity 105 or a UE 115 may use beam sweeping techniques as part of beamforming operations. For example, a network entity 105 (e.g., a base station 140, an RU 170) may use multiple antennas or antenna arrays (e.g., antenna panels) to conduct beamforming operations for directional communications with a UE 115. Some signals (e.g., synchronization signals, reference signals, beam selection signals, or other control signals) may be transmitted by a network entity 105 multiple times along different directions. For example, the network entity 105 may transmit a signal according to different beamforming weight sets associated with different directions of transmission. Transmissions along different beam directions may be used to identify (e.g., by a transmitting device, such as a network entity 105, or by a receiving device, such as a UE 115) a beam direction for later transmission or reception by the network entity 105.
[0100] Some signals, such as data signals associated with a particular receiving device, may be transmitted by transmitting device (e.g., a transmitting network entity 105, a transmitting UE 115) along a single beam direction (e.g., a direction associated with the receiving device, such as a receiving network entity 105 or a receiving UE 115) . In some examples, the beam direction associated with transmissions along a single beam direction may be determined based on a signal that was transmitted along one or more beam directions. For example, a UE 115 may receive one or more of the signals transmitted by the network entity 105 along different directions and may report to the network entity 105 an indication of the signal that the UE 115 received with a highest signal quality or an otherwise acceptable signal quality.
[0101] In some examples, transmissions by a device (e.g., by a network entity 105 or a UE 115) may be performed using multiple beam directions, and the device may use a combination of digital precoding or beamforming to generate a combined beam for transmission (e.g., from a network entity 105 to a UE 115) . The UE 115 may report feedback that indicates precoding weights for one or more beam directions, and the feedback may correspond to a configured set of beams across a system bandwidth or one or more sub-bands. The network entity 105 may transmit a reference signal (e.g., a cell-specific reference signal (CRS) , a channel state information reference signal (CSI-RS) ) , which may be precoded or unprecoded. The UE 115 may provide feedback for beam selection, which may be a precoding matrix indicator (PMI) or codebook-based feedback (e.g., a multi-panel type codebook, a linear combination type codebook, a port selection type codebook) . Although these techniques are described with reference to signals transmitted along one or more directions by a network entity 105 (e.g., a base station 140, an RU 170) , a UE 115 may employ similar techniques for transmitting signals multiple times along different directions (e.g., for identifying a beam direction for subsequent transmission or reception by the UE 115) or for transmitting a signal along a single direction (e.g., for transmitting data to a receiving device) .
[0102] A receiving device (e.g., a UE 115) may perform reception operations in accordance with multiple receive configurations (e.g., directional listening) when receiving various signals from a transmitting device (e.g., a network entity 105) , such as synchronization signals, reference signals, beam selection signals, or other control signals. For example, a receiving device may perform reception in accordance with multiple receive directions by receiving via different antenna subarrays, by processing received signals according to different antenna subarrays, by receiving according to different receive beamforming weight sets (e.g., different directional listening weight sets) applied to signals received at multiple antenna elements of an antenna array, or by processing received signals according to different receive beamforming weight sets applied to signals received at multiple antenna elements of an antenna array, any of which may be referred to as “listening” according to different receive configurations or receive directions. In some examples, a receiving device may use a single receive configuration to receive along a single beam direction (e.g., when receiving a data signal) . The single receive configuration may be aligned along a beam direction determined based on listening according to different receive configuration directions (e.g., a beam direction determined to have a highest signal strength, highest signal-to-noise ratio (SNR) , or otherwise acceptable signal quality based on listening according to multiple beam directions) .
[0103] The wireless communications system 100 may be a packet-based network that operates according to a layered protocol stack. In the user plane, communications at the bearer or PDCP layer may be IP-based. An RLC layer may perform packet segmentation and reassembly to communicate via logical channels. A MAC layer may perform priority handling and multiplexing of logical channels into transport channels. The MAC layer also may implement error detection techniques, error correction techniques, or both to support retransmissions to improve link efficiency. In the control plane, an RRC layer may provide establishment, configuration, and maintenance of an RRC connection between a UE 115 and a network entity 105 or a core network 130 supporting radio bearers for user plane data. A PHY layer may map transport channels to physical channels.
[0104] The UEs 115 and the network entities 105 may support retransmissions of data to increase the likelihood that data is received successfully. Hybrid automatic repeat request (HARQ) feedback is one technique for increasing the likelihood that data is received correctly via a communication link (e.g., a communication link 125, a D2D communication link 135) . HARQ may include a combination of error detection (e.g., using a cyclic redundancy check (CRC) ) , forward error correction (FEC) , and retransmission (e.g., automatic repeat request (ARQ) ) . HARQ may improve throughput at the MAC layer in poor radio conditions (e.g., low signal-to-noise conditions) . In some examples, a device may support same-slot HARQ feedback, in which case the device may provide HARQ feedback in a specific slot for data received via a previous symbol in the slot. In some other examples, the device may provide HARQ feedback in a subsequent slot, or according to some other time interval.
[0105] In some cases, a UE 115 may operate with a unified transmission configuration indicator (TCI) state. That is, the UE 115 may receive an indication of a TCI state for the UE 115 to use for uplink beamforming. The unified TCI state may apply to more than one type of signal. For example, the UE 115 may use the unified TCI state for uplink data messages such as PUSCH signaling, for PUCCH signaling, and for SRSs. The UE 115 may use the unified or joint TCI state in one or more frequency ranges (FRs) (e.g., FR1 or FR2) . In some examples, the UE 115 may use a different TCI state for each of PUSCH, PUCCH, and SRSs.
[0106] In some examples of the wireless communication system 100, a UE 115 may operate in an uplink dense deployment scenario. That is, the UE 115 may transmit uplink signaling to one or more uplink-dedicated network entities 105 (e.g., uplink reception points) . The uplink-dedicated network entities 105 may receive uplink signaling or channels from the UE 115 and may not transmit downlink signaling or channels to the UE 115. The UE 115 may communicate uplink and downlink signaling or channels with a central network entity 105 (e.g., a macro node, a central node, a serving cell, a serving base station) . The central network entity 105 may communicate with the uplink-dedicated network entities 105 via one or more backhaul channels. Such asymmetric uplink and downlink densification may improve coverage and capacity of uplink signaling from the UE 115. For example, the uplink dense deployment may reduce pathloss associated with the uplink signaling when insufficient uplink coverage results in pathloss (e.g., a bottleneck) . Additionally, the uplink dense deployment may reduce deployment cost and complexity associated with the uplink-dedicated network entities 105, as uplink-dedicated network entities 105 may receive uplink signaling and forward the uplink signaling to the central network entity 105 (e.g., with or without processing) and may not transmit downlink signaling.
[0107] In some uplink dense deployment scenarios, the UE 115 may perform power control operations for uplink signaling to the uplink-dedicated network entities 105 by transmitting one or more uplink reference signals via an uplink channel. The uplink-dedicated network entities 105 may indicate channel information (e.g., pathloss) based on the uplink reference signals to the central network entity 105, and the central network entity 105 may configure the UE 115 with pathloss information or other TPC information based on the channel information. However, such techniques may involve larger TPC messages than downlink reference signal-based power control techniques, and a TPC field in a DCI used for such power control techniques may therefore be too small to adequately indicate the TPC. Additionally, in some examples, the UE 115 may miss one or more DCI messages, which may result in a transmission power misalignment between the uplink-dedicated network entity 105 and the UE 115.
[0108] Accordingly, techniques described herein may allow for the UE 115 to determine a transmission power for uplink messages in the uplink dense deployment. For example, the UE 115 may receive a MAC-CE indicating TPC information for one or more uplink messages to the uplink-dedicated network entities 105. The MAC-CE may indicate a close loop power control parameter, a pathloss offset (e.g., relative to a pathloss associated with one or more downlink reference signals) , or an open loop power control parameter. Additionally, or alternatively, the UE 115 may receive a DCI message indicating a pathloss offset change or a relative open loop power control parameter change (e.g., relative to an initial pathloss offset value or open loop power control parameter) . Additionally, or alternatively, the UE 115 may receive an indication of an RSRP associated with the uplink reference signal, and may calculate a pathloss of the uplink channel (e.g., and accordingly a transmission power) based on the RSRP.
[0109] FIG. 2 shows an example of a wireless communications system 200 that supports uplink power control for uplink dense deployment scenarios in accordance with one or more aspects of the present disclosure. The wireless communications system 200 may implement or may be implemented by aspects of the wireless communications system 100. For example, the wireless communications system 200 may include a UE 115 (e.g., a UE 115-a) and a network entity 105 (e.g., a central network entity 105-a, an uplink-dedicated network entity 105-b, and an uplink-dedicated network entity 105-c) , which may be examples of the corresponding devices as described with reference to FIG. 1.
[0110] In some examples of the wireless communications system 200, a UE 115-amay perform uplink power control to determine a transmission power P (e.g., in decibels (dB) ) for one or more uplink messages 225. For example, the UE 115-a may receive one or more downlink reference signals 215-a via a downlink channel 205 from a network entity 105-a (e.g., a central network entity 105-a) , and may determine a pathloss associated with the downlink channel 205 based on the downlink reference signals 215-a. The UE 115-a may determine the transmission power P using Equation 1, Equation 2, or Equation 3 (e.g., for a PUSCH transmission, a PUCCH transmission, or an SRS transmission, respectively) .
[0111] With reference to Equations 1, 2, and 3, i may be defined as a transmission occasion index, j may be an index of a power control parameter set configuration (e.g., a set of P0 and α) , qd may be an index of a downlink reference signal 215 from a set of pathloss reference signals 215, l may be a power control adjustment state (e.g., a close loop index) , μ may be a subcarrier spacing associated with a channel between the UE 115-a and the network entity 105-a, and b may be a BWP of carrier f and serving or primary cell c (e.g., a BWP, carrier, and serving cell used by the UE 115-a to communicate with the network entity 105-a) . If the UE 115-a uses a unified or joint TCI state for PUSCH, PUCCH, and SRS, the UE 115-a may receive an indication of a set of power control parameters j (e.g., P0 , α, and a close loop index) associated with the unified or joint uplink TCI state. The set of power control parameters may additionally or alternatively be associated with the uplink channel 210-a or a downlink reference signal 215 (e.g., may be channel or signal dependent) . The UE 115-a may receive an indication of the power control parameter set in an information element from the network entity 105-a (e.g., Uplink-powerControlId-r17, ul-powercontrolId-r17) .
[0112] PCMAX, f, c (j) may be a maximum transmit power for the UE 115-a to use to transmit uplink messages 225-a to the network entity 105-a via an uplink channel 210-a(e.g., in the carrier f and serving cell c) . P0 PUSCH, b, f, c (j) , P0 PUCCH, b, f, c (qu) , and P0 SRS, b, f, c (qs) may represent open loop power control parameters P0 from a sum of a component P0 NOMINAL PUSCH, f, c (j) and a component P0 UE PUSEH, b, f, c (j) , from a sum of a component P0 NOMINAL PUCCH and a component P0 UE PUCCH (qu) (e.g., where qu represents a value of a set of P0 UE PUCCH values) , and from an SRS resource set qs, respectively. and MSRS, b, f, c (i) may represent a bandwidth of a PUSCH resource assignment, a PUCCH resource assignment and an SRS resource assignment, respectively (e.g., expressed in a quantity of resource blocks (RBs) ) . ΔTF, b, f, c may be a parameter related to a spectral efficiency of the serving cell and ΔF PUCCH may be a parameter related to a PUCCH format of a PUCCH resource.
[0113] PLb, f, c (qd) may be a pathloss estimate (e.g., in dB) of the downlink reference signal 215 with downlink reference signal index qd. αb, f, c (j) and αSRS, b, f, c (j) may be pathloss compensation coefficients. The UE 115-a may therefore determine uplink transmission power based on measuring downlink reference signals 215-a. For example, for PUSCH and PUCCH transmissions, the UE 115-a may receive a configuration for one or more pathloss reference signals 215 (e.g., a parameter PUSCH-PathlossReferenceRS, or a parameter PUCCH-PathlossReferenceRS via a radio resource control (RRC) message) and may additionally, or alternatively, receive an indication of a pathloss reference signal 215 from the one or more pathloss reference signals 215 (e.g., via a MAC-CE or an SRS resource indicator in an uplink grant) . For pathloss reference signals 215 for SRS power control, the UE 115-a may receive an RRC message configuring a pathloss reference signal 215 (e.g., a parameter pathlossReferenceRS) for each SRS resource set, and may apply the pathloss reference signal 215 to all SRS resources in the resource set. The UE 115-a may further receive a MAC-CE message indicating an update to the configured pathloss reference signal 215 for each SRS resource set. If the UE 115-a uses a joint or unified TCI state for PUSCH, PUCCH, and SRS, the pathloss reference signal 215 may be associated with the joint or unified TCI state (e.g., via a parameter PUSCH-PathlossReferenceRS-Id-17, a parameter PUCCH-PathlossReferenceRS, or a parameter pathlossReferenceRS-Id-17 in a TCI-State information element) .
[0114] The UE 115-a may use open loop power control and close loop power control to determine the transmission power. For example, the UE 115-a may receive a configuration of a set of open loop power control parameters (e.g., a set of P0 , α, and an indication of a downlink reference signal 215-a) to calculate a first portion (e.g., the open loop power control portion) of the power control formulas in Equation 1, Equation 2, and Equation 3. The UE 115-a may also receive a TPC command (e.g., in a UE-specific or group common (GC) DCI) indicating a close loop power adjustment fb, f, c (i, l) , gb, f, c (i, l) , or hb, f, c (i, l) for a second portion (e.g., the close loop power control portion) of the power control formulas.
[0115] In some examples of the wireless communications system 200, the UE 115-amay use an uplink dense deployment with asymmetric downlink single transmission reception point (sTRP) and uplink multiple TRPs (mTRPs) that are intra-band intra-cell non-co-located TRPs (e.g., without defining a new uplink-only cell for the uplink mTRPs) . That is, the UE 115-a may transmit uplink signaling to one or more uplink-dedicated network entities 105 (e.g., an uplink-dedicated network entity 105-b and an uplink-dedicated network entity 105-c) . The uplink-dedicated network entity 105-b and the uplink-dedicated network entity 105-c may receive uplink signaling or channels from the UE 115-a and may not transmit downlink signaling or channels to the UE 115-a. The UE 115-a may communicate uplink and downlink signaling or channels with the central network entity 105-a. The central network entity 105 may communicate with the uplink-dedicated network entity 105-b and the uplink-dedicated network entity 105-c via one or more backhaul channels.
[0116] Because the uplink-dedicated network entity 105-b and the uplink-dedicated network entity 105-c may not transmit downlink signaling to the UE 115-a, the UE 115-a may not receive downlink reference signals from the uplink-dedicated network entity 105-b and the uplink-dedicated network entity 105-c. Accordingly, the UE 115-a may not use downlink reference signals 215 to determine a pathloss and therefore an uplink transmit power for uplink signaling (e.g., PUSCH, PUCCH, and SRS) to the uplink-dedicated network entity 105-b and the uplink-dedicated network entity 105-c.
[0117] Accordingly, the UE 115-a may transmit uplink reference signals 215-b and uplink reference signals 215-c to the uplink-dedicated network entity 105-b and the uplink-dedicated network entity 105-c via an uplink channel 210-b and an uplink channel 210-c, respectively. The uplink-dedicated network entity 105-b and the uplink-dedicated network entity 105-c may indicate channel conditions (e.g., RSRP, pathloss) associated with the reference signals 215-b and the reference signals 215-c, respectively, to the central network entity 105-a. The central network entity 105-a may accordingly estimate an uplink pathloss based on the indicated channel conditions associated with the reference signals 215-b and the uplink reference signals 215-c.
[0118] The central network entity 105-a may indicate a pathloss or a pathloss offset configuration to the UE 115-a (e.g., in the TPC field of the DCI) . The indicated pathloss may include pathlosses associated with the uplink reference signals 215-b and the uplink reference signals 215-c. The pathloss offset configuration may include offsets between a pathloss associated with a downlink reference signal 215-a and the pathlosses associated with the uplink reference signals 215-b and the uplink reference signals 215-c. Accordingly, the UE 115-a may determine a transmission power for one or more uplink messages 225-b and one or more uplink messages 225-c to the uplink-dedicated network entity 105-b and the uplink-dedicated network entity 105-c, respectively (e.g., via the uplink channel 210-b and the uplink channel 210-c) .
[0119] However, the TPC command in the DCI may indicate small changes to the close loop power control parameter, and may therefore not indicate large values associated with updating the pathloss or pathloss offsets of the uplink reference signals 215-b and the uplink reference signals 215-c (e.g., due to pathloss change or interference variations) . That is, for non-uplink dense deployment, the UE 115-a may adjust open loop transmission power based on measured pathlosses associated with the downlink reference signals, and the TPC command may indicate a relatively small range of values to adjust the close loop power control parameters. Accordingly, such DCI-based TPC commands may include a relatively small quantity of bits (e.g., two bits) for updating the close loop pathloss control parameters, while the pathloss or pathloss offsets of the uplink reference signals 215-b and the uplink reference signals 215-c may use a relatively larger quantity of bits (e.g., more than two bits) .
[0120] Accordingly, in some aspects, the UE 115-a may receive an additional message (e.g., a MAC-CE message) indicating transmit power information 220. For example, the UE 115-a may receive a MAC-CE message indicating an update for a close loop power control parameter (e.g., fb, f, c (i, l) , gb, f, c (i, l) , or hb, f, c (i, l) ) . Additionally, or alternatively, the UE 115-a may receive a MAC-CE message indicating an update for a pathloss offset value (e.g., an offset relative to a pathloss associated with a downlink reference signal 215-a) . Additionally, or alternatively, the UE 115-a may receive a MAC-CE message indicating an update for an open loop power control parameter (e.g., P0 ) . Such techniques are described in further detail with reference to FIG. 3.
[0121] In some aspects, the UE 115-a may receive a DCI indicating the transmit power information 220. For example, the DCI may indicate a pathloss offset value (e.g., an offset relative to a pathloss associated with a downlink reference signal 215-a) . Additionally, or alternatively, the DCI may indicate an update to an open loop power control parameter (e.g., P0 ) relative to an initial value of the open loop power control parameter. Such techniques are described in further detail with reference to FIG. 4.
[0122] In some examples, the UE 115-a may miss a DCI message (e.g., due to DCI miss detection) . Accordingly, the UE 115-a may not receive a TPC command from the central network entity 105-a, which may result in a transmission power misalignment between the UE 115-a, the uplink-dedicated network entity 105-b, and the uplink-dedicated network entity 105-c. The uplink-dedicated network entity 105-b and the uplink-dedicated network entity 105-c may therefore incorrectly estimate a pathloss associated with the uplink reference signals 215-b and the uplink reference signals 215-c, which may result in an inaccurate transmission power calculation.
[0123] Accordingly, the UE 115-a may receive an indication of an index associated with an uplink reference signal 215 to use as an uplink pathloss reference signal 215 to measure pathloss (e.g., rather than a downlink reference signal 215-a via the downlink channel 205) . The UE 115-a may further receive an indication of an RSRP (e.g., a layer 1 (L1) RSRP) associated with the uplink pathloss reference signal 215 via transmit power information 220. For example, the central network entity 105-a may indicate the L1 RSRP to the UE 115-a, and the UE 115-a may calculate a high layer filtered RSRP based on the indicated L1 RSRP. The UE 115-a may calculate the pathloss associated with the uplink pathloss reference signal 215 as a transmission power associated with the uplink pathloss reference signal 215 minus the higher layer filtered RSRP. Because the UE 115-a knows the transmission power associated with the pathloss reference signals 215, the UE 115-a may determine an accurate pathloss without transmission power misalignment.
[0124] In such examples, the UE 115-a may receive the transmission power information 220 via MAC-CE or DCI. For example, the UE 115-a may receive a MAC-CE or DCI message indicating the L1 RSRP and an identification (ID) associated with the corresponding uplink pathloss reference signal 215. The UE 115-a may apply a transmission power calculated using the L1 RSRP a quantity X slots after receiving the MAC-CE or DCI. In some examples, the corresponding uplink pathloss reference signal 215 may be an uplink reference signal transmitted a quantity Y slots prior to receiving the MAC-CE or DCI.
[0125] In some examples, the UE 115-a may use a default pathloss value to determine a transmission power for uplink messages 225 before receiving the DCI or MAC-CE indicating the RSRP. For example, the UE 115-a may determine a default pathloss based on one or more downlink reference signals 215. Additionally, or alternatively, the UE 115-a may receive an indication (e.g., in an RRC, MAC-CE, or DCI message) of the default pathloss. Additionally, or alternatively, the UE 115-a may assume a default pathloss (e.g., a pathloss of 0) .
[0126] In some examples, the UE 115-a may use a same uplink pathloss reference signal 215 for PUSCH, PUCCH, and SRS transmission power determination. In some examples, the UE 115-a may use a different uplink pathloss reference signal 215 for each of PUSCH, PUCCH, and SRS. In some examples, the UE 115-a may receive an indication of multiple uplink pathloss reference signals 215 (e.g., via RRC) , and may receive an indication of a selected uplink pathloss reference signal 215 of the multiple uplink pathloss reference signals 215 (e.g., via MAC-CE or DCI) .
[0127] FIG. 3 shows an example of a slot diagram 300 that supports uplink power control for uplink dense deployment scenarios in accordance with one or more aspects of the present disclosure. The slot diagram 300 may implement or may be implemented by aspects of the wireless communications system 100 or the wireless communications system 200. For example, the slot diagram 300 may be implemented by a UE 115 and one or more network entities 105, which may be examples of the corresponding devices as described with reference to FIG. 1.
[0128] In some examples, to determine an uplink transmission power for uplink messages 320 to an uplink-dedicated network entity 105, a UE 115 may receive one or more MAC-CE messages 315 indicating transmission power information. That is, a central network entity 105 may receive an indication of channel information (e.g., RSRP, pathloss) associated with an uplink reference signal from the UE 115 to the uplink-dedicated network entity 105. The central network entity 105 may indicate one or more TPC parameters in the one or more MAC-CEs 315 for the UE 115 to use for one or more uplink messages (e.g., PUSCH, PUCCH, SRS) to the unlink dedicated network entity 105. The one or more TPC parameters may include, for example, a close loop power control parameter (e.g., fb, f, c (i, l) , gb, f, c (i, l) , or hb, f, c (i, l) ) , an open loop power control parameter (e.g., P0 ) , or a pathloss offset value (e.g., relative to a pathloss associated with a downlink reference signal) .
[0129] The TPC command may be associated with multiple uplink channels or signals, or may be uplink channel or uplink signal dependent (e.g., same or different TPC commands for PDCCH, PUSCH, and SRS messages) . In some examples, the TPC command may be absolute or accumulative. For example, the TPC command may indicate an absolute value for the associated TPC parameter or an offset from a previous value of the TPC parameter. The UE 115 may receive an indication indicating whether the TPC command is accumulative (e.g., whether accumulation is enabled) . In some examples, the TPC command may apply a quantity X slots after transmitting an acknowledgment message (e.g., a HARQ-ACK) for the MAC-CE 315.
[0130] In some examples, the UE 115 may receive a DCI 310 (e.g., a scheduling DCI, a UE specific DCI, a GC DCI) indicating a TPC command (e.g., a close loop power control parameter) . In some examples, the UE 115 may not receive the DCI 310 indicating the TPC command. In some examples, the UE 115 may receive a control message (e.g., an RRC message) indicating whether or not the UE 115 will receive the DCI 310 indicating the TPC command (e.g., indicating whether DCI-based TPC is enabled) . The DCI 310 may indicate a close loop index for which the TPC command in the DCI 310 may apply.
[0131] In some examples, the MAC-CE message 315 may indicate a close loop control parameter. If multiple power control adjustment states or close loop indices l are configured at the UE 115-a for PUSCH, PUCCH, and / or SRS, the MAC-CE message 315 may further indicate a close loop index for which the close loop control parameter may apply. As an illustrative example, if accumulation and DCI-based TPC are enabled, the UE 115 may receive, via a slot 305-a, a first DCI 310-a associated with close loop index 0 (e.g., scheduling an uplink message 320-a associated with the close loop index 0 in a slot 305-c, such as a PUSCH, PUCCH, or SRS) . The first DCI 310-a may indicate a close loop power control parameter of -2. The UE 115 may receive a MAC-CE 315-aassociated with the close loop index 0 in the slot 305-a. The MAC-CE 315-a may indicate an update of +8 to the close loop power control parameter (e.g., to be applied after X slots, for example, starting at a slot 305-e) . In the slot 305-c, the UE 115 may transmit the uplink message 320-a using a close loop power control parameter of -2 (e.g., the close loop power control parameter indicated in the first DCI 310-a, as the MAC-CE 315-a may not be applied before the slot 305-e) .
[0132] In a slot 305-d, the UE 115 may receive a second DCI 310-a associated with the close loop index 0 (e.g., scheduling a second uplink message 320-a associated with the close loop index 0 in a slot 305-f) . The second DCI 310-a may indicate a close loop power control parameter change of +2. In the slot 305-f, the UE 115 may transmit the second uplink message 320-a using a close loop power control parameter of -2+8+2=8 (e.g., an accumulation of the close loop power control parameters indicated via the DCIs 310-a and the MAC-CE 315-a) .
[0133] In a slot 305-b, the UE 115 may receive a first DCI 310-b associated with close loop index 1 (e.g., scheduling a first uplink message 320-b associated with the close loop index 1 in a slot 305-d) . The first DCI 310-b may indicate a close loop power control parameter of -4. Accordingly, in the slot 305-d, the UE 115 may transmit the first uplink message 320-b using a close loop power control parameter of -4. In a slot 305-e, the UE 115 may receive a MAC-CE message 315-b associated with the close loop index 1 indicating a close loop parameter change of -6 (e.g., starting at a slot 305-h) .
[0134] In the slot 305-f, the UE 115 may receive a second DCI 310-b associated with close loop index 1 (e.g., scheduling a second uplink message 320-b associated with the close loop index 1 in a slot 305-g) . The second DCI 310-b may indicate a close loop power control parameter of -2. In the slot 305-g, the UE 115 may transmit the second uplink message 320-b using a close loop power control parameter of -4-2=-6 (e.g., an accumulation of the close loop power control parameter indicated in the DCIs 310-b, as the MAC-CE 315-b may not be applied before the slot 305-h) .
[0135] In the slot 305-g, the UE 115 may also receive a third DCI 310-b (e.g., scheduling a third uplink message 320-b associated with the close loop index 1 in the slot 305-h) . The third DCI 310-b may indicate a close loop power control parameter change of +2. In the slot 305-h, the UE 115 may transmit the third uplink message 320-b using a close loop power control parameter of -4-6-2+2 = -10 (e.g., an accumulation of the close loop power control parameters indicated via the DCIs 310-b and the MAC-CE 315-b) .
[0136] With reference to the close loop power control parameters in the illustrative example above, if accumulation is disabled, each MAC-CE 315 and DCI 310 may indicate an absolute close loop power control parameter value rather than an close loop power control parameter change. For example, the UE 115 may transmit the second uplink message 320-b using the close loop power control parameter of -2 indicated by the second DCI 310-b rather than the accumulation of the close loop power control parameters indicated by the DCIs 310-b.
[0137] With reference to the close loop power control parameters in the illustrative example above, if DCI-based TPC is disabled, the UE 115 may use TPC commands indicated via MAC-CE 315 (e.g., and not TPC commands indicated via DCI 310) . For example, the UE 115 may transmit the first uplink message 320-a using a close loop power control parameter (e.g., a default close loop power control parameter) of 0, as the UE 115 may not yet receive a TPC command. The UE 115 may transmit the second uplink message 320-a using a close loop power control parameter of +8 indicated by the MAC-CE 315-a (e.g., rather than the accumulation of the close loop power control parameters indicated by the DCI 310-a and the MAC-CE 315-a) .
[0138] In some examples, the TPC command in the MAC-CE 315 may indicate a pathloss offset or an update to a pathloss offset (e.g., associated with an ID or information element) . The pathloss offset may be, for example, an offset from a pathloss associated with a downlink reference signal of a set of pathloss reference signals. In some examples, the TPC command in the MAC-CE may indicate an open loop power control parameter P0 or an update to a P0 value (e.g., associated with an ID or information element) . The pathloss offset or P0 may be associated with a TCI state ID (e.g., for uplink unified TCI framework) , with a pathloss reference signal ID (e.g., pathlossReferenceRS-Id-r17 for the unified TCI state or pusch-PathlossReferenceRS-Id, pucch-PathlossReferenceRS-Id, or SRS-PathlossReferenceRS-Id for a non-unified TCI framework) , with an open loop power control parameter set (e.g., ul-powercontrolId-r17 for the unified TCI framework or p0-PUSCH-AlphaSetId, p0-PUCCH-Id, or srs-ResourceSetId for the non-unified TCI framework) , or with a resource set (e.g., an SRS resource set or a PUCCH resource set) . Additionally, or alternatively, the pathloss offset or P0 may be associated with a serving cell ID or BWP ID where the UE 115 is to apply the pathloss offset update. The UE 115 may receive the associated IDs via the MAC-CE 315.
[0139] The UE 115 may apply the pathloss offset value or P0 a quantity X slots after transmitting an acknowledgment message (e.g., a HARQ-ACK) for the MAC-CE 315 as described with reference to close loop power control parameter the example above. When the TPC command indicates a pathloss offset value or P0 , DCI-based TPC commands may be enabled or disabled as described with reference to the close loop power control parameter example above.
[0140] In such examples, the pathloss offset or P0 indicated via the TPC may be absolute or relative (e.g., as described with reference to the close loop power control parameter above) . In some examples, the UE 115 may receive a configuration message (e.g., via RRC) indicating whether the pathloss offset or P0 indicated via the TPC is absolute or relative. In some examples, if the pathloss offset or P0 is relative, the pathloss offset or P0 may be relative to a last-received pathloss offset or P0 value associated with the ID or relative to an initial pathloss offset or P0 value associated with the ID. In some examples, the UE 115 may receive a configuration message (e.g., via RRC) indicating whether the pathloss offset or P0 is relative to an initial or default pathloss offset or P0 value or a last-received pathloss offset or P0 value.
[0141] For example, the UE 115 may receive a parameter PL-OFFSET-Value indicating the initial pathloss offset value. The UE 115 may receive the parameter PL-OFFSET-Value in a TCI-State information element (e.g., for a unified TCI state framework if the pathloss offset is associated with an uplink or joint TCI state) , in a PL-ReferenceRS information element (e.g., if the pathloss offset is associated with a pathloss reference signal) , or in association with an open loop power control parameter set or SRS resource set (e.g., in an ul-powercontrolId-r17 information element for the unified TCI framework or p0-PUSCH-AlphaSetId, p0-PUCCH-Id, or srs-ResourceSetId information elements for the non-unified TCI framework) .
[0142] In some examples, if the TPC command indicates a pathloss offset relative to a pathloss of a downlink reference signal, the UE 115 may receive an indication of the associated downlink reference signal via the MAC-CE 315. In some examples, the UE 115 may be configured with one or more predefined rules for determining the associated downlink reference signal. For example, the associated downlink reference signal may be a pathloss reference signal with a lowest or highest pathloss reference signal ID, a pathloss reference signal with a lowest or highest pathloss value, or a pathloss reference signal with a lowest or highest TCI state (e.g., of a set of active TCI states) of the set of downlink reference signals. In some examples, the UE 115 may monitor for an indication of the associated downlink reference signal (e.g., in the MAC-CE 315) , and may determine the associated downlink reference signal based on the predefined rules if the UE 115 does not detect the indication of the associated downlink reference signal.
[0143] FIG. 4 shows an example of a slot diagram 400 that supports uplink power control for uplink dense deployment scenarios in accordance with one or more aspects of the present disclosure. The slot diagram 400 may implement or may be implemented by aspects of the wireless communications system 100, the wireless communications system 200, or the slot diagram 300. For example, the slot diagram 400 may be implemented by a UE 115 and one or more network entities 105, which may be examples of the corresponding devices as described with reference to FIG. 1.
[0144] In some examples, to determine an uplink transmission power for uplink messages 415 to an uplink-dedicated network entity 105, a UE 115 may receive one or more DCI messages 410 (e.g., scheduling DCI, UE specific DIC, GC DCI) indicating transmission power information. That is, a central network entity 105 may receive an indication of channel information (e.g., RSRP, pathloss) associated with an uplink reference signal from the UE 115 to the uplink-dedicated network entity 105. The central network entity 105 may indicate one or more TPC parameters (e.g., associated with an ID or information element) in the one or more DCI messages 410 for the UE 115 to use for one or more uplink messages (e.g., PUSCH, PUCCH, SRS) to the unlink dedicated network entity 105. The one or more TPC parameters may include, for example, an update to an open loop power control parameter (e.g., P0 ) or a pathloss offset value (e.g., relative to a pathloss associated with a downlink reference signal) .
[0145] The update to the pathloss offset or P0 may be associated with a TCI state ID (e.g., for uplink unified TCI framework) , with a pathloss reference signal ID (e.g., pathlossReferenceRS-Id-r17 for the unified TCI state or pusch-PathlossReferenceRS-Id, pucch-PathlossReferenceRS-Id, or SRS-PathlossReferenceRS-Id for a non-unified TCI framework) , with an open loop power control parameter set (e.g., ul-powercontrolId-r17 for the unified TCI framework or p0-PUSCH-AlphaSetId, p0-PUCCH-Id, or srs-ResourceSetId for the non-unified TCI framework) , or with a resource set (e.g., an SRS resource set or a PUCCH resource set) . The UE 115 may receive the associated IDs via the GC DCI 410. In some examples, the GC DCI 410 may, additionally, or alternatively, be specific to a component carrier (CC) . In such examples, the UE 115 may receive an indication of a location of each CC.
[0146] The update to P0 or the pathloss offset may be, for example, relative to an initial or last-received P0 or pathloss offset. For example, the pathloss offset or P0 update may be relative to a last-received pathloss offset or P0 value associated with the ID or relative to an initial pathloss offset or P0 value associated with the ID. In some examples, the UE 115 may receive a configuration message (e.g., via RRC) indicating whether the pathloss offset or P0 is relative to an initial or default pathloss offset or P0 value or a last-received pathloss offset or P0 value. In some examples, the update to the pathloss offset may be absolute.
[0147] In some examples, if the TPC command indicates a pathloss offset relative to a pathloss of a downlink reference signal, the UE 115 may receive an indication of the associated downlink reference signal via the DCI 410. In some examples, the UE 115 may be configured with one or more predefined rules for determining the associated downlink reference signal. For example, the associated downlink reference signal may be a pathloss reference signal with a lowest or highest pathloss reference signal ID, a pathloss reference signal with a lowest or highest pathloss value, or a pathloss reference signal with a lowest or highest TCI state (e.g., of a set of active TCI states) of a set of downlink pathloss reference signals. In some examples, the UE 115 may monitor for an indication of the associated downlink reference signal (e.g., in the DCI 410) , and may determine the associated downlink reference signal based on the predefined rules if the UE 115 does not detect the indication of the associated downlink reference signal.
[0148] In some examples, additional DCI-based TPC commands may be enabled or disabled. For example, the UE 115 may receive or may not receive one or more additional TPC commands via the DCI 410 (e.g., indicating an update to a close loop power control parameter) . In some examples, the UE 115 may receive a control message (e.g., via RRC) indicating whether the UE 115 will receive the additional TPC commands.
[0149] As an illustrative example, in a slot 405-a, the UE 115 may receive a first DCI 410 scheduling a first uplink message 415 (e.g., a PUCCH, PUSCH, or SRS) in a slot 405-b. The first DCI 410 may indicate an ID and a pathloss offset or P0 or an update to an initial (e.g., default) pathloss offset or P0 value associated with the ID. In the slot 405-b, the UE 115 may transmit the uplink message 415 with a transmit power determined based on the pathloss offset or P0 indicated in the first DCI 410.
[0150] In a slot 405-c, the UE 115 may receive a second DCI 410 scheduling a second uplink message 415 in a slot 405-d. The second DCI 410 may indicate a new pathloss offset or P0 or an update to the pathloss offset or P0 value associated with the ID.For example, the second DCI 410 may indicate a pathloss offset or P0 value update relative to the initial (e.g., default) pathloss offset or P0 value or relative to the last- received pathloss offset or P0 value associated with the ID (e.g., the pathloss offset or P0 value received via the first DCI 410) . In the slot 405-d, the UE 115 may transmit the second uplink message 415 based at least in part on the pathloss offset or P0 value indicated via the second DCI 410.
[0151] FIG. 5 shows an example of a process flow 500 that supports uplink power control for uplink dense deployment scenarios in accordance with one or more aspects of the present disclosure. The process flow 500 may implement or may be implemented by aspects of the wireless communications system 100, the wireless communications system 200, the slot diagram 300, or the slot diagram 400. For example, the process flow 500 may include a UE 115 (e.g., a UE 115-b) and one or more network entities 105 (e.g., an uplink-dedicated network entity 105-d, a central network entity 105-e) , which may be examples of the corresponding devices as described with reference to FIG. 1.
[0152] In the following description of the process flow 500, the operations between the UE 115-b, the network entity 105-d, and the network entity 105-e may be transmitted in a different order than the example order shown. Some operations may also be omitted from the process flow 500, and other operations may be added to the process flow 500. Further, although some operations or signaling may be shown to occur at different times for discussion purposes, these operations may actually occur at the same time.
[0153] In some examples, at 505, the UE 115-b may receive, from the central network entity 105-e, a set of downlink pathloss reference signals. In some examples, the UE 115-b may determine a pathloss associated with each of the set of downlink pathloss reference signals. For example, the UE 115-b may measure an RSRP associated with each of the set of downlink pathloss reference signals.
[0154] At 510, the UE 115-b may transmit, to the uplink-dedicated network entity 105-d, one or more uplink reference signals. The uplink-dedicated network entity 105-d may determine a pathloss associated with each of the set of uplink reference signals. For example, the uplink-dedicated network entity 105-d may measure an RSRP associated with each of the set of uplink reference signals.
[0155] In some examples, at 515, the uplink-dedicated network entity 105-d may transmit, to the central network entity 105-e, an indication of channel information associated with the set of uplink reference signals. For example, the uplink-dedicated network entity 105-d may indicate the RSRP or pathloss associated with the set of uplink reference signals.
[0156] In some examples, at 520, the central network entity 105-e may indicate, to the UE 115-b, control information associated with determining a transmit power for one or more uplink messages to the uplink-dedicated network entity 105-d. In some examples, the control information may include a configuration or indication of a downlink pathloss reference signal from the set of downlink pathloss reference signals. In some examples, the control information may indicate whether TPC information is absolute TPC information or relative TPC information (e.g., relative to one or more last-received or initial TPC information messages) . In some examples, the control information may indicate an initial or default TPC value. In some examples, the control information may indicate whether the UE will receive one or more DCI messages comprising additional TPC information. The control information may be in a MAC-CE, RRC, or DCI message.
[0157] In some examples, at 525, the UE 115-b may receive a DCI message from the central network entity 105-e. The DCI message may be, for example, a scheduling DCI or a GC DCI. The DCI message may indicate a TPC command for the one or more uplink messages. In some examples, the DCI message may not indicate the TPC command (e.g., in accordance with the control information) .
[0158] At 530, the UE 115-b may receive, from the central network entity 105-e, a MAC-CE message including TPC information for the one or more uplink messages. The TPC information may include one or more of an update to a close loop power control parameter (e.g., and a close loop index associated with the TPC) , an update to an open loop power control parameter, or an update to a pathloss offset parameter, wherein the pathloss offset parameter is an offset from a pathloss associated with a downlink reference signal. In some examples, the downlink reference signal may be the downlink reference signal indicated via the control information. In some examples, the downlink reference signal may be the downlink reference signal of the set of downlink reference signals associated with a highest or lowest pathloss reference signal ID, or a highest or lowest pathloss, a highest or lowest TCI state of a set of active TCI states.
[0159] In some examples, MAC-CE message may indicate an ID associated with the TPC information. The ID may be one or more of an ID for a TCI state, an uplink or downlink pathloss reference signal, an open loop power control parameter set, a BWP, a serving cell, an SRS resource set, or a PUCCH resource set.
[0160] In some examples, the TPC information may be specific to an uplink channel or signal or common across multiple uplink channels or signals. In some examples, the TPC information may be the absolute TPC information or may be an update to (e.g., offset from) last-received or initial TPC information associated with the ID (e.g., in accordance with the control information) . For example, the TPC information may be an offset relative to the TPC information included in the DCI or an offset relative to the initial or default TPC value.
[0161] At 535, the UE 115-b may transmit the one or more uplink message to the uplink-dedicated network entity 105-d. The UE 115-b may transmit the one or more uplink messages with a transmission power determined based on the TPC information in the MAC-CE message (e.g., and the DCI message) . The one or more uplink messages may include one or more of PUSCH, PUCCH, or SRS messages.
[0162] FIG. 6 shows an example of a process flow 600 that supports uplink power control for uplink dense deployment scenarios in accordance with one or more aspects of the present disclosure. The process flow 600 may implement or may be implemented by aspects of the wireless communications system 100, the wireless communications system 200, the slot diagram 300, the slot diagram 400, or the process flow 500. For example, the process flow 600 may include a UE 115 (e.g., a UE 115-c) and one or more network entities 105 (e.g., an uplink-dedicated network entity 105-f, a central network entity 105-g) , which may be examples of the corresponding devices as described with reference to FIG. 1.
[0163] In the following description of the process flow 600, the operations between the network entity 105-f, the network entity 105-g, and the UE 115-c may be transmitted in a different order than the example order shown. Some operations may also be omitted from the process flow 600, and other operations may be added to the process flow 600. Further, although some operations or signaling may be shown to occur at different times for discussion purposes, these operations may actually occur at the same time.
[0164] In some examples, at 605, the UE 115-c may receive, from the central network entity 105-g, a set of downlink pathloss reference signals. In some examples, the UE 115-c may determine a pathloss associated with each of the set of downlink pathloss reference signals. For example, the UE 115-c may measure an RSRP associated with each of the set of downlink pathloss reference signals.
[0165] At 610, the UE 115-c may transmit, to the uplink-dedicated network entity 105-f, one or more uplink pathloss reference signals. The uplink-dedicated network entity 105-f may determine a pathloss associated with each of the set of uplink pathloss reference signals. For example, the uplink-dedicated network entity 105-f may measure an RSRP associated with each of the set of uplink pathloss reference signals.
[0166] In some examples, at 615, the uplink-dedicated network entity 105-f may transmit, to the central network entity 105-g, an indication of channel information associated with the set of uplink pathloss reference signals. For example, the uplink-dedicated network entity 105-f may indicate the RSRP or pathloss associated with the set of uplink pathloss reference signals.
[0167] In some examples, at 620, the central network entity 105-g may indicate, to the UE 115-c, control information associated with determining a transmit power for one or more uplink messages to the uplink-dedicated network entity 105-f. In some examples, the control information may include a configuration or indication of a downlink pathloss reference signal from the set of downlink pathloss reference signals. In some examples, the control information may indicate whether TPC information is absolute TPC information or relative TPC information (e.g., relative to one or more last-received or initial TPC information messages) . In some examples, the control information may indicate an initial or default TPC parameter value. In some examples, the control information may indicate whether the UE will receive one or more additional DCI messages comprising additional TPC information. The control information may be in a MAC-CE, RRC, or DCI message.
[0168] At 625, the UE 115-c may receive a DCI message from the central network entity 105-g. The DCI message may be, for example, a scheduling DCI, a UE-specific DCI, or a GC DCI. The DCI message may indicate a TPC command for the one or more uplink messages. For example, the DCI message may indicate an update to an open loop power control parameter relative to a previous open loop power control parameter or an update to a pathloss offset parameter that is offset from a pathloss associated with a downlink reference signal. In some examples, the downlink reference signal may be the downlink reference signal of the set of downlink reference signals associated with a highest or lowest pathloss reference signal ID, or a highest or lowest pathloss, a highest or lowest TCI state of a set of active TCI states.
[0169] In some examples, DCI message may indicate an ID associated with the TPC information. The ID may be one or more of an ID for a TCI state, an uplink or downlink pathloss reference signal, an open loop power control parameter set, a BWP, a serving cell, an SRS resource set, or a PUCCH resource set. In some examples, the TPC information may be specific to an uplink channel or signal or common across multiple uplink channels or signals. In some examples, the TPC information may be the absolute TPC information or may be an update to (e.g., offset from) last-received or initial TPC information associated with the ID (e.g., in accordance with the control information) .
[0170] In some examples, at 630, the UE 115-c may receive the additional DCI message from the central network entity 105-g. The additional DCI message may be, for example, a scheduling DCI or a GC DCI. The additional DCI message may indicate an additional TPC command for the one or more uplink messages. In some examples, the DCI message may not indicate the additional TPC command (e.g., in accordance with the control information) .
[0171] At 635, the UE 115-c may transmit the one or more uplink message to the uplink-dedicated network entity 105-f. The UE 115-c may transmit the one or more uplink messages with a transmission power determined based on the TPC information in the DCI message (e.g., and the additional DCI message) . The one or more uplink messages may include one or more of PUSCH, PUCCH, or SRS messages.
[0172] FIG. 7 shows an example of a process flow 700 that supports uplink power control for uplink dense deployment scenarios in accordance with one or more aspects of the present disclosure. The process flow 700 may implement or may be implemented by aspects of the wireless communications system 100, the wireless communications system 200, the slot diagram 300, the slot diagram 400, the process flow 500, or the process flow 600. For example, the process flow 700 may include a UE 115 (e.g., a UE 115-d) and one or more network entities 105 (e.g., an uplink-dedicated network entity 105-h, a central network entity 105-i) , which may be examples of the corresponding devices as described with reference to FIG. 1.
[0173] In the following description of the process flow 700, the operations between the network entity 105-h, the network entity 105-i, and the UE 115-d may be transmitted in a different order than the example order shown. Some operations may also be omitted from the process flow 700, and other operations may be added to the process flow 700. Further, although some operations or signaling may be shown to occur at different times for discussion purposes, these operations may actually occur at the same time.
[0174] In some examples, at 705, the UE 115-d may receive, from the central network entity 105-i, a set of downlink pathloss reference signals. In some examples, the UE 115-d may determine a pathloss associated with each of the set of downlink pathloss reference signals. For example, the UE 115-d may measure an RSRP associated with each of the set of downlink pathloss reference signals.
[0175] At 710, the UE 115-d may transmit, to the uplink-dedicated network entity 105-h, one or more uplink pathloss reference signals. The uplink-dedicated network entity 105-h may determine a pathloss associated with each of the set of uplink pathloss reference signals. For example, the uplink-dedicated network entity 105-h may measure an RSRP associated with each of the set of uplink pathloss reference signals.
[0176] In some examples, at 715, the uplink-dedicated network entity 105-h may transmit, to the central network entity 105-i, an indication of channel information associated with the set of uplink pathloss reference signals. For example, the uplink-dedicated network entity 105-h may indicate the RSRP associated with the set of uplink pathloss reference signals.
[0177] In some examples, at 720, the central network entity 105-i may indicate, to the UE 115-d, control information associated with determining a transmit power for one or more uplink messages to the uplink-dedicated network entity 105-h. In some examples, the control information may include a configuration or indication of a downlink pathloss reference signal from the set of downlink pathloss reference signals. In some examples, the control information may include a configuration or indication of an uplink pathloss reference signal from the set of uplink pathloss reference signals. In some examples, the control information may indicate a default pathloss value for the UE 115-d to use for one or more uplink messages. In some examples, the control information may indicate that the uplink pathloss reference signal is associated with one or more PUCCH messages, one or more PUSCH messages, or one or more SRSs.
[0178] In some examples, at 725, the UE 115-d may transmit one or more uplink messages using a default pathloss value to calculate a transmission power of the one or more uplink messages. The default pathloss value may be a pathloss associated with the indicated downlink reference signal, the default pathloss value indicated via the control information, or a default value of 0.
[0179] At 730, the UE 115-d may receive, from the central network entity 105-e, an indication of an RSRP associated with the indicated uplink pathloss reference signal. The UE 115-d may calculate an uplink pathloss associated with the uplink pathloss reference signal based on the indicated RSRP. The UE 115-d may receive the RSRP via a DCI, MAC-CE, or RRC message.
[0180] At 735, the UE 115-d may transmit the one or more uplink message to the uplink-dedicated network entity 105-h. The UE 115-d may transmit the one or more uplink messages with a transmission power determined based on the calculated uplink pathloss. The one or more uplink messages may include one or more of PUSCH, PUCCH, or SRS messages (e.g., in accordance with the indication in the control information) .
[0181] FIG. 8 shows a block diagram 800 of a device 805 that supports uplink power control for uplink dense deployment scenarios in accordance with one or more aspects of the present disclosure. The device 805 may be an example of aspects of a UE 115 as described herein. The device 805 may include a receiver 810, a transmitter 815, and a communications manager 820. The device 805, or one or more components of the device 805 (e.g., the receiver 810, the transmitter 815, and the communications manager 820) , may include at least one processor, which may be coupled with at least one memory, to, individually or collectively, support or enable the described techniques. Each of these components may be in communication with one another (e.g., via one or more buses) .
[0182] The receiver 810 may provide a means for receiving information such as packets, user data, control information, or any combination thereof associated with various information channels (e.g., control channels, data channels, information channels related to uplink power control for uplink dense deployment scenarios) . Information may be passed on to other components of the device 805. The receiver 810 may utilize a single antenna or a set of multiple antennas.
[0183] The transmitter 815 may provide a means for transmitting signals generated by other components of the device 805. For example, the transmitter 815 may transmit information such as packets, user data, control information, or any combination thereof associated with various information channels (e.g., control channels, data channels, information channels related to uplink power control for uplink dense deployment scenarios) . In some examples, the transmitter 815 may be co-located with a receiver 810 in a transceiver module. The transmitter 815 may utilize a single antenna or a set of multiple antennas.
[0184] The communications manager 820, the receiver 810, the transmitter 815, or various combinations thereof or various components thereof may be examples of means for performing various aspects of uplink power control for uplink dense deployment scenarios as described herein. For example, the communications manager 820, the receiver 810, the transmitter 815, or various combinations or components thereof may be capable of performing one or more of the functions described herein.
[0185] In some examples, the communications manager 820, the receiver 810, the transmitter 815, or various combinations or components thereof may be implemented in hardware (e.g., in communications management circuitry) . The hardware may include at least one of a processor, a digital signal processor (DSP) , a central processing unit (CPU) , an application-specific integrated circuit (ASIC) , a field-programmable gate array (FPGA) or other programmable logic device, a microcontroller, discrete gate or transistor logic, discrete hardware components, or any combination thereof configured as or otherwise supporting, individually or collectively, a means for performing the functions described in the present disclosure. In some examples, at least one processor and at least one memory coupled with the at least one processor may be configured to perform one or more of the functions described herein (e.g., by one or more processors, individually or collectively, executing instructions stored in the at least one memory) .
[0186] Additionally, or alternatively, the communications manager 820, the receiver 810, the transmitter 815, or various combinations or components thereof may be implemented in code (e.g., as communications management software or firmware) executed by at least one processor. If implemented in code executed by at least one processor, the functions of the communications manager 820, the receiver 810, the transmitter 815, or various combinations or components thereof may be performed by a general-purpose processor, a DSP, a CPU, an ASIC, an FPGA, a microcontroller, or any combination of these or other programmable logic devices (e.g., configured as or otherwise supporting, individually or collectively, a means for performing the functions described in the present disclosure) .
[0187] In some examples, the communications manager 820 may be configured to perform various operations (e.g., receiving, obtaining, monitoring, outputting, transmitting) using or otherwise in cooperation with the receiver 810, the transmitter 815, or both. For example, the communications manager 820 may receive information from the receiver 810, send information to the transmitter 815, or be integrated in combination with the receiver 810, the transmitter 815, or both to obtain information, output information, or perform various other operations as described herein.
[0188] The communications manager 820 may support wireless communications in accordance with examples as disclosed herein. For example, the communications manager 820 is capable of, configured to, or operable to support a means for receiving a MAC-CE message including TPC information for one or more uplink messages. The communications manager 820 is capable of, configured to, or operable to support a means for transmitting the one or more uplink messages based on the TPC information.
[0189] Additionally, or alternatively, the communications manager 820 may support wireless communications in accordance with examples as disclosed herein. For example, the communications manager 820 is capable of, configured to, or operable to support a means for receiving a DCI message indicating a TPC parameter for one or more uplink messages, where the TPC parameter includes one of an update to an open loop power control parameter relative to a previous open loop power control parameter or an update to a pathloss offset parameter, where the pathloss offset parameter is an offset from a pathloss associated with a downlink reference signal. The communications manager 820 is capable of, configured to, or operable to support a means for transmitting the one or more uplink messages based on the TPC parameter.
[0190] Additionally, or alternatively, the communications manager 820 may support wireless communications in accordance with examples as disclosed herein. For example, the communications manager 820 is capable of, configured to, or operable to support a means for transmitting an uplink reference signal. The communications manager 820 is capable of, configured to, or operable to support a means for receiving an indication of a reference signal received power associated with the uplink reference signal. The communications manager 820 is capable of, configured to, or operable to support a means for transmitting one or more uplink messages, where a transmit power associated with the one or more uplink messages is based on the reference signal received power.
[0191] By including or configuring the communications manager 820 in accordance with examples as described herein, the device 805 (e.g., at least one processor controlling or otherwise coupled with the receiver 810, the transmitter 815, the communications manager 820, or a combination thereof) may support techniques for determining transmission power for uplink-dense deployment, which may result in reduced power consumption and improved communication reliability.
[0192] FIG. 9 shows a block diagram 900 of a device 905 that supports uplink power control for uplink dense deployment scenarios in accordance with one or more aspects of the present disclosure. The device 905 may be an example of aspects of a device 805 or a UE 115 as described herein. The device 905 may include a receiver 910, a transmitter 915, and a communications manager 920. The device 905, or one or more components of the device 905 (e.g., the receiver 910, the transmitter 915, and the communications manager 920) , may include at least one processor, which may be coupled with at least one memory, to support the described techniques. Each of these components may be in communication with one another (e.g., via one or more buses) .
[0193] The receiver 910 may provide a means for receiving information such as packets, user data, control information, or any combination thereof associated with various information channels (e.g., control channels, data channels, information channels related to uplink power control for uplink dense deployment scenarios) . Information may be passed on to other components of the device 905. The receiver 910 may utilize a single antenna or a set of multiple antennas.
[0194] The transmitter 915 may provide a means for transmitting signals generated by other components of the device 905. For example, the transmitter 915 may transmit information such as packets, user data, control information, or any combination thereof associated with various information channels (e.g., control channels, data channels, information channels related to uplink power control for uplink dense deployment scenarios) . In some examples, the transmitter 915 may be co-located with a receiver 910 in a transceiver module. The transmitter 915 may utilize a single antenna or a set of multiple antennas.
[0195] The device 905, or various components thereof, may be an example of means for performing various aspects of uplink power control for uplink dense deployment scenarios as described herein. For example, the communications manager 920 may include a TPC manager 925, an uplink message manager 930, an uplink reference signal manager 935, an RSRP manager 940, or any combination thereof. The communications manager 920 may be an example of aspects of a communications manager 820 as described herein. In some examples, the communications manager 920, or various components thereof, may be configured to perform various operations (e.g., receiving, obtaining, monitoring, outputting, transmitting) using or otherwise in cooperation with the receiver 910, the transmitter 915, or both. For example, the communications manager 920 may receive information from the receiver 910, send information to the transmitter 915, or be integrated in combination with the receiver 910, the transmitter 915, or both to obtain information, output information, or perform various other operations as described herein.
[0196] The communications manager 920 may support wireless communications in accordance with examples as disclosed herein. The TPC manager 925 is capable of, configured to, or operable to support a means for receiving a MAC-CE message including TPC information for one or more uplink messages. The uplink message manager 930 is capable of, configured to, or operable to support a means for transmitting the one or more uplink messages based on the TPC information.
[0197] Additionally, or alternatively, the communications manager 920 may support wireless communications in accordance with examples as disclosed herein. The TPC manager 925 is capable of, configured to, or operable to support a means for receiving a DCI message indicating a TPC parameter for one or more uplink messages, where the TPC parameter includes one of an update to an open loop power control parameter relative to a previous open loop power control parameter or an update to a pathloss offset parameter, where the pathloss offset parameter is an offset from a pathloss associated with a downlink reference signal. The uplink message manager 930 is capable of, configured to, or operable to support a means for transmitting the one or more uplink messages based on the TPC parameter.
[0198] Additionally, or alternatively, the communications manager 920 may support wireless communications in accordance with examples as disclosed herein. The uplink reference signal manager 935 is capable of, configured to, or operable to support a means for transmitting an uplink reference signal. The RSRP manager 940 is capable of, configured to, or operable to support a means for receiving an indication of a reference signal received power associated with the uplink reference signal. The uplink message manager 930 is capable of, configured to, or operable to support a means for transmitting one or more uplink messages, where a transmit power associated with the one or more uplink messages is based on the reference signal received power.
[0199] FIG. 10 shows a block diagram 1000 of a communications manager 1020 that supports uplink power control for uplink dense deployment scenarios in accordance with one or more aspects of the present disclosure. The communications manager 1020 may be an example of aspects of a communications manager 820, a communications manager 920, or both, as described herein. The communications manager 1020, or various components thereof, may be an example of means for performing various aspects of uplink power control for uplink dense deployment scenarios as described herein. For example, the communications manager 1020 may include a TPC manager 1025, an uplink message manager 1030, an uplink reference signal manager 1035, an RSRP manager 1040, a DCI-based TPC manager 1045, a pathloss offset manager 1050, or any combination thereof. Each of these components, or components or subcomponents thereof (e.g., one or more processors, one or more memories) , may communicate, directly or indirectly, with one another (e.g., via one or more buses) .
[0200] The communications manager 1020 may support wireless communications in accordance with examples as disclosed herein. The TPC manager 1025 is capable of, configured to, or operable to support a means for receiving a MAC-CE message including TPC information for one or more uplink messages. The uplink message manager 1030 is capable of, configured to, or operable to support a means for transmitting the one or more uplink messages based on the TPC information.
[0201] In some examples, the TPC information includes an update to a close loop power control parameter.
[0202] In some examples, the TPC information further includes a close loop index associated with the TPC information.
[0203] In some examples, the TPC information includes an update to a pathloss offset parameter. In some examples, the pathloss offset parameter is an offset from a pathloss associated with a downlink reference signal.
[0204] In some examples, the pathloss offset manager 1050 is capable of, configured to, or operable to support a means for receiving a configuration or indication of the downlink reference signal associated with the pathloss offset parameter.
[0205] In some examples, the downlink reference signal is one of a set of downlink pathloss reference signals. In some examples, the downlink reference signal is associated with a lowest pathloss reference signal identification of the set of downlink pathloss reference signals, a highest pathloss reference signal identification of the set of downlink pathloss reference signals, a lowest pathloss value of the set of downlink pathloss reference signals, a highest pathloss value of the set of downlink pathloss reference signals, a downlink pathloss reference signal associated with a lowest TCI state of a set of active TCI states associated with the set of downlink pathloss reference signals, or a downlink pathloss reference signal associated with a highest TCI state of the set of active TCI states associated with the set of downlink pathloss reference signals.
[0206] In some examples, the TPC information includes an update to an open loop power control parameter.
[0207] In some examples, the TPC information is common to a set of multiple uplink channels or uplink signals or is specific to one uplink channel or uplink signal.
[0208] In some examples, the TPC information includes an indication of an absolute TPC parameter value or an indication of an offset from a previous TPC parameter value.
[0209] In some examples, the TPC manager 1025 is capable of, configured to, or operable to support a means for receiving a RRC message indicating whether the TPC information includes the indication of the absolute TPC parameter value or the indication of the offset from the previous TPC parameter value.
[0210] In some examples, the TPC information is associated with an identification. In some examples, the previous TPC parameter value is an initial TPC parameter value associated with the identification or a last received TPC parameter value associated with the identification.
[0211] In some examples, the TPC manager 1025 is capable of, configured to, or operable to support a means for receiving a control message indicating the initial TPC parameter value.
[0212] In some examples, the MAC-CE message indicates an identification of a TCI state, a pathloss reference signal, an open loop power control parameter set, a bandwidth part, a serving cell, a sounding reference signal resource set, a physical uplink control channel resource, or some combination thereof associated with the TPC information.
[0213] In some examples, the DCI-based TPC manager 1045 is capable of, configured to, or operable to support a means for receiving a RRC message indicating whether the UE will receive one or more DCI messages including additional TPC information.
[0214] In some examples, the DCI-based TPC manager 1045 is capable of, configured to, or operable to support a means for receiving one or more DCI messages including additional TPC information, where transmitting the one or more uplink messages includes transmitting the one or more uplink messages based on the additional TPC information. In some examples, the uplink message manager 1030 is capable of, configured to, or operable to support a means for transmitting the one or more uplink messages based on the additional TPC information.
[0215] In some examples, the one or more uplink messages include one or more physical uplink control channel messages, one or more physical uplink shared channel messages, one or more sounding reference signals, or some combination thereof.
[0216] Additionally, or alternatively, the communications manager 1020 may support wireless communications in accordance with examples as disclosed herein. In some examples, the TPC manager 1025 is capable of, configured to, or operable to support a means for receiving a DCI message indicating a TPC parameter for one or more uplink messages, where the TPC parameter includes one of an update to an open loop power control parameter relative to a previous open loop power control parameter or an update to a pathloss offset parameter, where the pathloss offset parameter is an offset from a pathloss associated with a downlink reference signal. In some examples, the uplink message manager 1030 is capable of, configured to, or operable to support a means for transmitting the one or more uplink messages based on the TPC parameter.
[0217] In some examples, the pathloss offset manager 1050 is capable of, configured to, or operable to support a means for receiving a configuration or indication of the downlink reference signal.
[0218] In some examples, the downlink reference signal is one of a set of downlink pathloss reference signals. In some examples, the downlink reference signal is associated with a lowest pathloss reference signal identification of the set of downlink pathloss reference signals, a highest pathloss reference signal identification of the set of downlink pathloss reference signals, a lowest pathloss value of the set of downlink pathloss reference signals, a highest pathloss value of the set of downlink pathloss reference signals, a downlink pathloss reference signal associated with a lowest TCI state of a set of active TCI states associated with the set of downlink pathloss reference signals, or a downlink pathloss reference signal associated with a highest TCI state of the set of active TCI states associated with the set of downlink pathloss reference signals.
[0219] In some examples, the update to the pathloss offset parameter includes an indication of an absolute pathloss offset value or an indication of an offset from a previous pathloss offset value.
[0220] In some examples, the pathloss offset manager 1050 is capable of, configured to, or operable to support a means for receiving a RRC message indicating whether the offset includes the indication of the absolute pathloss offset value or the indication of the offset from the previous pathloss offset value.
[0221] In some examples, the update to the open loop power control parameter is associated with an identification. In some examples, the previous open loop power control parameter includes an initial open loop control parameter associated with the identification or a last received open loop power control parameter associated with the identification.
[0222] In some examples, the DCI message indicates an identification of a TCI state, a pathloss reference signal, an open loop power control parameter set, a bandwidth part, a serving cell, a sounding reference signal resource set, a physical uplink control channel resource, or some combination thereof associated with the TPC parameter.
[0223] In some examples, the DCI-based TPC manager 1045 is capable of, configured to, or operable to support a means for receiving a RRC message indicating whether the UE will receive one or more additional DCI messages including additional TPC information.
[0224] In some examples, the DCI-based TPC manager 1045 is capable of, configured to, or operable to support a means for receiving one or more additional DCI messages including additional TPC information, where transmitting the one or more uplink messages includes transmitting the one or more uplink messages based on the additional TPC information. In some examples, the DCI-based TPC manager 1045 is capable of, configured to, or operable to support a means for transmitting the one or more uplink messages based on the additional TPC information.
[0225] In some examples, the DCI message is a scheduling DCI or a group common DCI.
[0226] In some examples, the one or more uplink messages include one or more physical uplink control channel messages, one or more physical uplink shared channel messages, one or more sounding reference signals, or some combination thereof.
[0227] Additionally, or alternatively, the communications manager 1020 may support wireless communications in accordance with examples as disclosed herein. The uplink reference signal manager 1035 is capable of, configured to, or operable to support a means for transmitting an uplink reference signal. The RSRP manager 1040 is capable of, configured to, or operable to support a means for receiving an indication of a reference signal received power associated with the uplink reference signal. In some examples, the uplink message manager 1030 is capable of, configured to, or operable to support a means for transmitting one or more uplink messages, where a transmit power associated with the one or more uplink messages is based on the reference signal received power.
[0228] In some examples, the RSRP manager 1040 is capable of, configured to, or operable to support a means for calculating an uplink pathloss associated with the uplink reference signal based on the reference signal received power, where the transmit power is based on the uplink pathloss.
[0229] In some examples, the one or more uplink messages include one or more physical uplink control channel messages, one or more physical uplink shared channel messages, one or more sounding reference signals, or some combination thereof.
[0230] In some examples, the uplink reference signal manager 1035 is capable of, configured to, or operable to support a means for receiving an indication that the uplink reference signal is associated with one or more physical uplink control channel messages, one or more physical uplink shared channel messages, one or more sounding reference signals, or some combination thereof.
[0231] In some examples, the uplink reference signal manager 1035 is capable of, configured to, or operable to support a means for receiving a control message indicating the uplink reference signal from a set of uplink reference signals.
[0232] In some examples, the indication of the reference signal received power is received via a MAC-CE message or via a DCI message.
[0233] In some examples, the uplink message manager 1030 is capable of, configured to, or operable to support a means for transmitting, prior to receiving the indication of the reference signal received power, one or more initial uplink messages based on a default pathloss value.
[0234] In some examples, the pathloss offset manager 1050 is capable of, configured to, or operable to support a means for determining the default pathloss value based on a pathloss associated with a downlink reference signal.
[0235] In some examples, the default pathloss value is zero.
[0236] In some examples, the pathloss offset manager 1050 is capable of, configured to, or operable to support a means for receiving a control message indicating a respective default pathloss value associated with each of a set of uplink reference signals, the set of uplink reference signals including the uplink reference signal, where the default pathloss value is the respective default pathloss value associated with the uplink reference signal.
[0237] FIG. 11 shows a diagram of a system 1100 including a device 1105 that supports uplink power control for uplink dense deployment scenarios in accordance with one or more aspects of the present disclosure. The device 1105 may be an example of or include the components of a device 805, a device 905, or a UE 115 as described herein. The device 1105 may communicate (e.g., wirelessly) with one or more network entities 105, one or more UEs 115, or any combination thereof. The device 1105 may include components for bi-directional voice and data communications including components for transmitting and receiving communications, such as a communications manager 1120, an input / output (I / O) controller 1110, a transceiver 1115, an antenna 1125, at least one memory 1130, code 1135, and at least one processor 1140. These components may be in electronic communication or otherwise coupled (e.g., operatively, communicatively, functionally, electronically, electrically) via one or more buses (e.g., a bus 1145) .
[0238] The I / O controller 1110 may manage input and output signals for the device 1105. The I / O controller 1110 may also manage peripherals not integrated into the device 1105. In some cases, the I / O controller 1110 may represent a physical connection or port to an external peripheral. In some cases, the I / O controller 1110 may utilize an operating system such as or another known operating system. Additionally, or alternatively, the I / O controller 1110 may represent or interact with a modem, a keyboard, a mouse, a touchscreen, or a similar device. In some cases, the I / O controller 1110 may be implemented as part of one or more processors, such as the at least one processor 1140. In some cases, a user may interact with the device 1105 via the I / O controller 1110 or via hardware components controlled by the I / O controller 1110.
[0239] In some cases, the device 1105 may include a single antenna 1125. However, in some other cases, the device 1105 may have more than one antenna 1125, which may be capable of concurrently transmitting or receiving multiple wireless transmissions. The transceiver 1115 may communicate bi-directionally, via the one or more antennas 1125, wired, or wireless links as described herein. For example, the transceiver 1115 may represent a wireless transceiver and may communicate bi-directionally with another wireless transceiver. The transceiver 1115 may also include a modem to modulate the packets, to provide the modulated packets to one or more antennas 1125 for transmission, and to demodulate packets received from the one or more antennas 1125. The transceiver 1115, or the transceiver 1115 and one or more antennas 1125, may be an example of a transmitter 815, a transmitter 915, a receiver 810, a receiver 910, or any combination thereof or component thereof, as described herein.
[0240] The at least one memory 1130 may include random access memory (RAM) and read-only memory (ROM) . The at least one memory 1130 may store computer-readable, computer-executable code 1135 including instructions that, when executed by the at least one processor 1140, cause the device 1105 to perform various functions described herein. The code 1135 may be stored in a non-transitory computer-readable medium such as system memory or another type of memory. In some cases, the code 1135 may not be directly executable by the at least one processor 1140 but may cause a computer (e.g., when compiled and executed) to perform functions described herein. In some cases, the at least one memory 1130 may contain, among other things, a basic I / O system (BIOS) which may control basic hardware or software operation such as the interaction with peripheral components or devices.
[0241] The at least one processor 1140 may include an intelligent hardware device (e.g., a general-purpose processor, a DSP, a CPU, a microcontroller, an ASIC, an FPGA, a programmable logic device, a discrete gate or transistor logic component, a discrete hardware component, or any combination thereof) . In some cases, the at least one processor 1140 may be configured to operate a memory array using a memory controller. In some other cases, a memory controller may be integrated into the at least one processor 1140. The at least one processor 1140 may be configured to execute computer-readable instructions stored in a memory (e.g., the at least one memory 1130) to cause the device 1105 to perform various functions (e.g., functions or tasks supporting uplink power control for uplink dense deployment scenarios) . For example, the device 1105 or a component of the device 1105 may include at least one processor 1140 and at least one memory 1130 coupled with or to the at least one processor 1140, the at least one processor 1140 and at least one memory 1130 configured to perform various functions described herein. In some examples, the at least one processor 1140 may include multiple processors and the at least one memory 1130 may include multiple memories. One or more of the multiple processors may be coupled with one or more of the multiple memories, which may, individually or collectively, be configured to perform various functions herein. In some examples, the at least one processor 1140 may be a component of a processing system, which may refer to a system (such as a series) of machines, circuitry (including, for example, one or both of processor circuitry (which may include the at least one processor 1140) and memory circuitry (which may include the at least one memory 1130) ) , or components, that receives or obtains inputs and processes the inputs to produce, generate, or obtain a set of outputs. The processing system may be configured to perform one or more of the functions described herein. As such, the at least one processor 1140 or a processing system including the at least one processor 1140 may be configured to, configurable to, or operable to cause the device 1105 to perform one or more of the functions described herein. Further, as described herein, being “configured to, ” being “configurable to, ” and being “operable to” may be used interchangeably and may be associated with a capability, when executing code stored in the at least one memory 1130 or otherwise, to perform one or more of the functions described herein.
[0242] The communications manager 1120 may support wireless communications in accordance with examples as disclosed herein. For example, the communications manager 1120 is capable of, configured to, or operable to support a means for receiving a MAC-CE message including TPC information for one or more uplink messages. The communications manager 1120 is capable of, configured to, or operable to support a means for transmitting the one or more uplink messages based on the TPC information.
[0243] Additionally, or alternatively, the communications manager 1120 may support wireless communications in accordance with examples as disclosed herein. For example, the communications manager 1120 is capable of, configured to, or operable to support a means for receiving a DCI message indicating a TPC parameter for one or more uplink messages, where the TPC parameter includes one of an update to an open loop power control parameter relative to a previous open loop power control parameter or an update to a pathloss offset parameter, where the pathloss offset parameter is an offset from a pathloss associated with a downlink reference signal. The communications manager 1120 is capable of, configured to, or operable to support a means for transmitting the one or more uplink messages based on the TPC parameter.
[0244] Additionally, or alternatively, the communications manager 1120 may support wireless communications in accordance with examples as disclosed herein. For example, the communications manager 1120 is capable of, configured to, or operable to support a means for transmitting an uplink reference signal. The communications manager 1120 is capable of, configured to, or operable to support a means for receiving an indication of a reference signal received power associated with the uplink reference signal. The communications manager 1120 is capable of, configured to, or operable to support a means for transmitting one or more uplink messages, where a transmit power associated with the one or more uplink messages is based on the reference signal received power.
[0245] By including or configuring the communications manager 1120 in accordance with examples as described herein, the device 1105 may support techniques for determining transmission power for uplink-dense deployment, which may result in improved communication reliability, reduced power consumption, and improved coordination between devices.
[0246] In some examples, the communications manager 1120 may be configured to perform various operations (e.g., receiving, monitoring, transmitting) using or otherwise in cooperation with the transceiver 1115, the one or more antennas 1125, or any combination thereof. Although the communications manager 1120 is illustrated as a separate component, in some examples, one or more functions described with reference to the communications manager 1120 may be supported by or performed by the at least one processor 1140, the at least one memory 1130, the code 1135, or any combination thereof. For example, the code 1135 may include instructions executable by the at least one processor 1140 to cause the device 1105 to perform various aspects of uplink power control for uplink dense deployment scenarios as described herein, or the at least one processor 1140 and the at least one memory 1130 may be otherwise configured to, individually or collectively, perform or support such operations.
[0247] FIG. 12 shows a flowchart illustrating a method 1200 that supports uplink power control for uplink dense deployment scenarios in accordance with aspects of the present disclosure. The operations of the method 1200 may be implemented by a UE or its components as described herein. For example, the operations of the method 1200 may be performed by a UE 115 as described with reference to FIGs. 1 through 11. In some examples, a UE may execute a set of instructions to control the functional elements of the UE to perform the described functions. Additionally, or alternatively, the UE may perform aspects of the described functions using special-purpose hardware.
[0248] At 1205, the method may include receiving a MAC-CE message including TPC information for one or more uplink messages. The operations of 1205 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1205 may be performed by a TPC manager 1025 as described with reference to FIG. 10.
[0249] At 1210, the method may include transmitting the one or more uplink messages based on the TPC information. The operations of 1210 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1210 may be performed by an uplink message manager 1030 as described with reference to FIG. 10.
[0250] FIG. 13 shows a flowchart illustrating a method 1300 that supports uplink power control for uplink dense deployment scenarios in accordance with aspects of the present disclosure. The operations of the method 1300 may be implemented by a UE or its components as described herein. For example, the operations of the method 1300 may be performed by a UE 115 as described with reference to FIGs. 1 through 11. In some examples, a UE may execute a set of instructions to control the functional elements of the UE to perform the described functions. Additionally, or alternatively, the UE may perform aspects of the described functions using special-purpose hardware.
[0251] At 1305, the method may include receiving a MAC-CE message including TPC information for one or more uplink messages. The operations of 1305 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1305 may be performed by a TPC manager 1025 as described with reference to FIG. 10.
[0252] At 1310, the method may include receiving a RRC message indicating whether the UE will receive one or more DCI messages including additional TPC information. The operations of 1310 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1310 may be performed by a DCI-based TPC manager 1045 as described with reference to FIG. 10.
[0253] At 1315, the method may include transmitting the one or more uplink messages based on the TPC information. The operations of 1315 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1315 may be performed by an uplink message manager 1030 as described with reference to FIG. 10.
[0254] FIG. 14 shows a flowchart illustrating a method 1400 that supports uplink power control for uplink dense deployment scenarios in accordance with aspects of the present disclosure. The operations of the method 1400 may be implemented by a UE or its components as described herein. For example, the operations of the method 1400 may be performed by a UE 115 as described with reference to FIGs. 1 through 11. In some examples, a UE may execute a set of instructions to control the functional elements of the UE to perform the described functions. Additionally, or alternatively, the UE may perform aspects of the described functions using special-purpose hardware.
[0255] At 1405, the method may include receiving a DCI message indicating a TPC parameter for one or more uplink messages, where the TPC parameter includes one of an update to an open loop power control parameter relative to a previous open loop power control parameter or an update to a pathloss offset parameter, where the pathloss offset parameter is an offset from a pathloss associated with a downlink reference signal. The operations of 1405 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1405 may be performed by a TPC manager 1025 as described with reference to FIG. 10.
[0256] At 1410, the method may include transmitting the one or more uplink messages based on the TPC parameter. The operations of 1410 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1410 may be performed by an uplink message manager 1030 as described with reference to FIG. 10.
[0257] FIG. 15 shows a flowchart illustrating a method 1500 that supports uplink power control for uplink dense deployment scenarios in accordance with aspects of the present disclosure. The operations of the method 1500 may be implemented by a UE or its components as described herein. For example, the operations of the method 1500 may be performed by a UE 115 as described with reference to FIGs. 1 through 11. In some examples, a UE may execute a set of instructions to control the functional elements of the UE to perform the described functions. Additionally, or alternatively, the UE may perform aspects of the described functions using special-purpose hardware.
[0258] At 1505, the method may include receiving a DCI message indicating a TPC parameter for one or more uplink messages, where the TPC parameter includes one of an update to an open loop power control parameter relative to a previous open loop power control parameter or an update to a pathloss offset parameter, where the pathloss offset parameter is an offset from a pathloss associated with a downlink reference signal. The operations of 1505 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1505 may be performed by a TPC manager 1025 as described with reference to FIG. 10.
[0259] At 1510, the method may include transmitting the one or more uplink messages based on the TPC parameter. The operations of 1510 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1510 may be performed by an uplink message manager 1030 as described with reference to FIG. 10.
[0260] At 1515, the method may include receiving a configuration or indication of the downlink reference signal. The operations of 1515 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1515 may be performed by a pathloss offset manager 1050 as described with reference to FIG. 10.
[0261] FIG. 16 shows a flowchart illustrating a method 1600 that supports uplink power control for uplink dense deployment scenarios in accordance with aspects of the present disclosure. The operations of the method 1600 may be implemented by a UE or its components as described herein. For example, the operations of the method 1600 may be performed by a UE 115 as described with reference to FIGs. 1 through 11. In some examples, a UE may execute a set of instructions to control the functional elements of the UE to perform the described functions. Additionally, or alternatively, the UE may perform aspects of the described functions using special-purpose hardware.
[0262] At 1605, the method may include transmitting an uplink reference signal. The operations of 1605 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1605 may be performed by an uplink reference signal manager 1035 as described with reference to FIG. 10.
[0263] At 1610, the method may include receiving an indication of a reference signal received power associated with the uplink reference signal. The operations of 1610 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1610 may be performed by an RSRP manager 1040 as described with reference to FIG. 10.
[0264] At 1615, the method may include transmitting one or more uplink messages, where a transmit power associated with the one or more uplink messages is based on the reference signal received power. The operations of 1615 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1615 may be performed by an uplink message manager 1030 as described with reference to FIG. 10.
[0265] FIG. 17 shows a flowchart illustrating a method 1700 that supports uplink power control for uplink dense deployment scenarios in accordance with aspects of the present disclosure. The operations of the method 1700 may be implemented by a UE or its components as described herein. For example, the operations of the method 1700 may be performed by a UE 115 as described with reference to FIGs. 1 through 11. In some examples, a UE may execute a set of instructions to control the functional elements of the UE to perform the described functions. Additionally, or alternatively, the UE may perform aspects of the described functions using special-purpose hardware.
[0266] At 1705, the method may include transmitting an uplink reference signal. The operations of 1705 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1705 may be performed by an uplink reference signal manager 1035 as described with reference to FIG. 10.
[0267] At 1710, the method may include receiving an indication of a reference signal received power associated with the uplink reference signal. The operations of 1710 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1710 may be performed by an RSRP manager 1040 as described with reference to FIG. 10.
[0268] At 1715, the method may include transmitting one or more uplink messages, where a transmit power associated with the one or more uplink messages is based on the reference signal received power. The operations of 1715 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1715 may be performed by an uplink message manager 1030 as described with reference to FIG. 10.
[0269] At 1720, the method may include calculating an uplink pathloss associated with the uplink reference signal based on the reference signal received power, where the transmit power is based on the uplink pathloss. The operations of 1720 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1720 may be performed by an RSRP manager 1040 as described with reference to FIG. 10.
[0270] The following provides an overview of aspects of the present disclosure:
[0271] Aspect 1: A method for wireless communications by a UE, comprising: receiving a MAC-CE message comprising TPC information for one or more uplink messages; and transmitting the one or more uplink messages based at least in part on the TPC information.
[0272] Aspect 2: The method of aspect 1, wherein the TPC information comprises an update to a close loop power control parameter.
[0273] Aspect 3: The method of aspect 2, wherein the TPC information further comprises a close loop index associated with the TPC information.
[0274] Aspect 4: The method of any of aspects 1 through 3, wherein the TPC information comprises an update to a pathloss offset parameter, and wherein the pathloss offset parameter is an offset from a pathloss associated with a downlink reference signal.
[0275] Aspect 5: The method of aspect 4, further comprising: receiving a configuration or indication of the downlink reference signal associated with the pathloss offset parameter.
[0276] Aspect 6: The method of any of aspects 4 through 5, wherein the downlink reference signal is one of a set of downlink pathloss reference signals, and the downlink reference signal is associated with a lowest pathloss reference signal ID of the set of downlink pathloss reference signals, a highest pathloss reference signal ID of the set of downlink pathloss reference signals, a lowest pathloss value of the set of downlink pathloss reference signals, a highest pathloss value of the set of downlink pathloss reference signals, a downlink pathloss reference signal associated with a lowest TCI state of a set of active TCI states associated with the set of downlink pathloss reference signals, or a downlink pathloss reference signal associated with a highest TCI state of the set of active TCI states associated with the set of downlink pathloss reference signals.
[0277] Aspect 7: The method of any of aspects 1 through 6, wherein the TPC information comprises an update to an open loop power control parameter.
[0278] Aspect 8: The method of any of aspects 1 through 7, wherein the TPC information is common to a plurality of uplink channels or uplink signals or is specific to one uplink channel or uplink signal.
[0279] Aspect 9: The method of any of aspects 1 through 8, wherein the TPC information comprises an indication of an absolute TPC parameter value or an indication of an offset from a previous TPC parameter value.
[0280] Aspect 10: The method of aspect 9, further comprising: receiving a RRC message indicating whether the TPC information comprises the indication of the absolute TPC parameter value or the indication of the offset from the previous TPC parameter value.
[0281] Aspect 11: The method of any of aspects 9 through 10, wherein the TPC information is associated with an ID, and the previous TPC parameter value is an initial TPC parameter value associated with the ID or a last received TPC parameter value associated with the ID.
[0282] Aspect 12: The method of aspect 11, further comprising: receiving a control message indicating the initial TPC parameter value.
[0283] Aspect 13: The method of any of aspects 1 through 12, wherein the MAC-CE message indicates an ID of a TCI state, a pathloss reference signal, an open loop power control parameter set, a BWP, a serving cell, a SRS resource set, a PUCCH resource, or some combination thereof associated with the TPC information.
[0284] Aspect 14: The method of any of aspects 1 through 13, further comprising: receiving a RRC message indicating whether the UE will receive one or more DCI messages comprising additional TPC information.
[0285] Aspect 15: The method of any of aspects 1 through 14, further comprising: receiving one or more DCI messages comprising additional TPC information, wherein transmitting the one or more uplink messages comprises: transmitting the one or more uplink messages based at least in part on the additional TPC information.
[0286] Aspect 16: The method of any of aspects 1 through 15, wherein the one or more uplink messages comprise one or more PUCCH messages, one or more PUSCH messages, one or more SRSs, or some combination thereof.
[0287] Aspect 17: A method for wireless communications by a UE, comprising: receiving a DCI message indicating a TPC parameter for one or more uplink messages, wherein the TPC parameter comprises one of an update to an open loop power control parameter relative to a previous open loop power control parameter or an update to a pathloss offset parameter, wherein the pathloss offset parameter is an offset from a pathloss associated with a downlink reference signal; and transmitting the one or more uplink messages based at least in part on the TPC parameter.
[0288] Aspect 18: The method of aspect 17, further comprising: receiving a configuration or indication of the downlink reference signal.
[0289] Aspect 19: The method of any of aspects 17 through 18, wherein the downlink reference signal is one of a set of downlink pathloss reference signals, and the downlink reference signal is associated with a lowest pathloss reference signal ID of the set of downlink pathloss reference signals, a highest pathloss reference signal ID of the set of downlink pathloss reference signals, a lowest pathloss value of the set of downlink pathloss reference signals, a highest pathloss value of the set of downlink pathloss reference signals, a downlink pathloss reference signal associated with a lowest TCI state of a set of active TCI states associated with the set of downlink pathloss reference signals, or a downlink pathloss reference signal associated with a highest TCI state of the set of active TCI states associated with the set of downlink pathloss reference signals.
[0290] Aspect 20: The method of any of aspects 17 through 19, wherein the update to the pathloss offset parameter comprises an indication of an absolute pathloss offset value or an indication of an offset from a previous pathloss offset value.
[0291] Aspect 21: The method of aspect 20, further comprising: receiving a RRC message indicating whether the offset comprises the indication of the absolute pathloss offset value or the indication of the offset from the previous pathloss offset value.
[0292] Aspect 22: The method of any of aspects 17 through 21, wherein the update to the open loop power control parameter is associated with an ID, and the previous open loop power control parameter comprises an initial open loop control parameter associated with the ID or a last received open loop power control parameter associated with the ID.
[0293] Aspect 23: The method of any of aspects 17 through 22, wherein the DCI message indicates an ID of a TCI state, a pathloss reference signal, an open loop power control parameter set, a BWP, a serving cell, a SRS resource set, a PUCCH resource, or some combination thereof associated with the TPC parameter.
[0294] Aspect 24: The method of any of aspects 17 through 23, further comprising: receiving a RRC message indicating whether the UE will receive one or more additional DCI messages comprising additional TPC information.
[0295] Aspect 25: The method of any of aspects 17 through 24, further comprising: receiving one or more additional DCI messages comprising additional TPC information, wherein transmitting the one or more uplink messages comprises: transmitting the one or more uplink messages based at least in part on the additional TPC information.
[0296] Aspect 26: The method of any of aspects 17 through 25, wherein the DCI message is a scheduling DCI or a GC DCI.
[0297] Aspect 27: The method of any of aspects 17 through 26, wherein the one or more uplink messages comprise one or more PUCCH messages, one or more PUSCH messages, one or more SRSs, or some combination thereof.
[0298] Aspect 28: A method for wireless communications by a UE, comprising: transmitting an uplink reference signal; receiving an indication of a RSRP associated with the uplink reference signal; and transmitting one or more uplink messages, wherein a transmit power associated with the one or more uplink messages is based at least in part on the RSRP.
[0299] Aspect 29: The method of aspect 28, further comprising: calculating an uplink pathloss associated with the uplink reference signal based at least in part on the RSRP, wherein the transmit power is based at least in part on the uplink pathloss.
[0300] Aspect 30: The method of any of aspects 28 through 29, wherein the one or more uplink messages comprise one or more PUCCH messages, one or more PUSCH messages, one or more SRSs, or some combination thereof.
[0301] Aspect 31: The method of any of aspects 28 through 30, further comprising: receiving an indication that the uplink reference signal is associated with one or more PUCCH messages, one or more PUSCH messages, one or more SRSs, or some combination thereof.
[0302] Aspect 32: The method of aspect 31, further comprising: receiving a control message indicating the uplink reference signal from a set of uplink reference signals.
[0303] Aspect 33: The method of any of aspects 28 through 32, wherein the indication of the RSRP is received via a MAC-CE message or via a DCI message.
[0304] Aspect 34: The method of any of aspects 28 through 33, further comprising: transmitting, prior to receiving the indication of the RSRP, one or more initial uplink messages based at least in part on a default pathloss value.
[0305] Aspect 35: The method of aspect 34, further comprising: determining the default pathloss value based at least in part on a pathloss associated with a downlink reference signal.
[0306] Aspect 36: The method of any of aspects 34 through 35, wherein the default pathloss value is zero.
[0307] Aspect 37: The method of any of aspects 34 through 36, further comprising: receiving a control message indicating a respective default pathloss value associated with each of a set of uplink reference signals, the set of uplink reference signals comprising the uplink reference signal, wherein the default pathloss value is the respective default pathloss value associated with the uplink reference signal.
[0308] Aspect 38: A UE for wireless communications, comprising one or more memories storing processor-executable code, and one or more processors coupled with the one or more memories and individually or collectively operable to execute the code to cause the UE to perform a method of any of aspects 1 through 16.
[0309] Aspect 39: A UE for wireless communications, comprising at least one means for performing a method of any of aspects 1 through 16.
[0310] Aspect 40: A non-transitory computer-readable medium storing code for wireless communications, the code comprising instructions executable by a processor to perform a method of any of aspects 1 through 16.
[0311] Aspect 41: A UE for wireless communications, comprising one or more memories storing processor-executable code, and one or more processors coupled with the one or more memories and individually or collectively operable to execute the code to cause the UE to perform a method of any of aspects 17 through 27.
[0312] Aspect 42: A UE for wireless communications, comprising at least one means for performing a method of any of aspects 17 through 27.
[0313] Aspect 43: A non-transitory computer-readable medium storing code for wireless communications, the code comprising instructions executable by a processor to perform a method of any of aspects 17 through 27.
[0314] Aspect 44: A UE for wireless communications, comprising one or more memories storing processor-executable code, and one or more processors coupled with the one or more memories and individually or collectively operable to execute the code to cause the UE to perform a method of any of aspects 28 through 37.
[0315] Aspect 45: A UE for wireless communications, comprising at least one means for performing a method of any of aspects 28 through 37.
[0316] Aspect 46: A non-transitory computer-readable medium storing code for wireless communications, the code comprising instructions executable by a processor to perform a method of any of aspects 28 through 37.
[0317] It should be noted that the methods described herein describe possible implementations, and that the operations and the steps may be rearranged or otherwise modified and that other implementations are possible. Further, aspects from two or more of the methods may be combined.
[0318] Although aspects of an LTE, LTE-A, LTE-A Pro, or NR system may be described for purposes of example, and LTE, LTE-A, LTE-A Pro, or NR terminology may be used in much of the description, the techniques described herein are applicable beyond LTE, LTE-A, LTE-A Pro, or NR networks. For example, the described techniques may be applicable to various other wireless communications systems such as Ultra Mobile Broadband (UMB) , Institute of Electrical and Electronics Engineers (IEEE) 802.11 (Wi-Fi) , IEEE 802.16 (WiMAX) , IEEE 802.20, Flash-OFDM, as well as other systems and radio technologies not explicitly mentioned herein.
[0319] Information and signals described herein may be represented using any of a variety of different technologies and techniques. For example, data, instructions, commands, information, signals, bits, symbols, and chips that may be referenced throughout the description may be represented by voltages, currents, electromagnetic waves, magnetic fields or particles, optical fields or particles, or any combination thereof.
[0320] The various illustrative blocks and components described in connection with the disclosure herein may be implemented or performed using a general-purpose processor, a DSP, an ASIC, a CPU, an FPGA or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. A general-purpose processor may be a microprocessor but, in the alternative, the processor may be any processor, controller, microcontroller, or state machine. A processor may also be implemented as a combination of computing devices (e.g., a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration) . Any functions or operations described herein as being capable of being performed by a processor may be performed by multiple processors that, individually or collectively, are capable of performing the described functions or operations.
[0321] The functions described herein may be implemented using hardware, software executed by a processor, firmware, or any combination thereof. If implemented using software executed by a processor, the functions may be stored as or transmitted using one or more instructions or code of a computer-readable medium. Other examples and implementations are within the scope of the disclosure and appended claims. For example, due to the nature of software, functions described herein may be implemented using software executed by a processor, hardware, firmware, hardwiring, or combinations of any of these. Features implementing functions may also be physically located at various positions, including being distributed such that portions of functions are implemented at different physical locations.
[0322] Computer-readable media includes both non-transitory computer storage media and communication media including any medium that facilitates transfer of a computer program from one location to another. A non-transitory storage medium may be any available medium that may be accessed by a general-purpose or special-purpose computer. By way of example, and not limitation, non-transitory computer-readable media may include RAM, ROM, electrically erasable programmable ROM (EEPROM) , flash memory, compact disk (CD) ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other non-transitory medium that may be used to carry or store desired program code means in the form of instructions or data structures and that may be accessed by a general-purpose or special-purpose computer, or a general-purpose or special-purpose processor. Also, any connection is properly termed a computer-readable medium. For example, if the software is transmitted from a website, server, or other remote source using a coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL) , or wireless technologies such as infrared, radio, and microwave, then the coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave are included in the definition of computer-readable medium. Disk and disc, as used herein, include CD, laser disc, optical disc, digital versatile disc (DVD) , floppy disk and Blu-ray disc. Disks may reproduce data magnetically, and discs may reproduce data optically using lasers. Combinations of the above are also included within the scope of computer-readable media. Any functions or operations described herein as being capable of being performed by a memory may be performed by multiple memories that, individually or collectively, are capable of performing the described functions or operations.
[0323] As used herein, including in the claims, “or” as used in a list of items (e.g., a list of items prefaced by a phrase such as “at least one of” or “one or more of” ) indicates an inclusive list such that, for example, a list of at least one of A, B, or C means A or B or C or AB or AC or BC or ABC (i.e., A and B and C) . Also, as used herein, the phrase “based on” shall not be construed as a reference to a closed set of conditions. For example, an example step that is described as “based on condition A” may be based on both a condition A and a condition B without departing from the scope of the present disclosure. In other words, as used herein, the phrase “based on” shall be construed in the same manner as the phrase “based at least in part on. ”
[0324] As used herein, including in the claims, the article “a” before a noun is open-ended and understood to refer to “at least one” of those nouns or “one or more” of those nouns. Thus, the terms “a, ” “at least one, ” “one or more, ” “at least one of one or more” may be interchangeable. For example, if a claim recites “a component” that performs one or more functions, each of the individual functions may be performed by a single component or by any combination of multiple components. Thus, the term “acomponent” having characteristics or performing functions may refer to “at least one of one or more components” having a particular characteristic or performing a particular function. Subsequent reference to a component introduced with the article “a” using the terms “the” or “said” may refer to any or all of the one or more components. For example, a component introduced with the article “a” may be understood to mean “one or more components, ” and referring to “the component” subsequently in the claims may be understood to be equivalent to referring to “at least one of the one or more components. ” Similarly, subsequent reference to a component introduced as “one or more components” using the terms “the” or “said” may refer to any or all of the one or more components. For example, referring to “the one or more components” subsequently in the claims may be understood to be equivalent to referring to “at least one of the one or more components. ”
[0325] The term “determine” or “determining” encompasses a variety of actions and, therefore, “determining” can include calculating, computing, processing, deriving, investigating, looking up (such as via looking up in a table, a database or another data structure) , ascertaining and the like. Also, “determining” can include receiving (e.g., receiving information) , accessing (e.g., accessing data stored in memory) and the like. Also, “determining” can include resolving, obtaining, selecting, choosing, establishing, and other such similar actions.
[0326] In the appended figures, similar components or features may have the same reference label. Further, various components of the same type may be distinguished by following the reference label by a dash and a second label that distinguishes among the similar components. If just the first reference label is used in the specification, the description is applicable to any one of the similar components having the same first reference label irrespective of the second reference label, or other subsequent reference label.
[0327] The description set forth herein, in connection with the appended drawings, describes example configurations and does not represent all the examples that may be implemented or that are within the scope of the claims. The term “example” used herein means “serving as an example, instance, or illustration, ” and not “preferred” or “advantageous over other examples. ” The detailed description includes specific details for the purpose of providing an understanding of the described techniques. These techniques, however, may be practiced without these specific details. In some instances, known structures and devices are shown in block diagram form in order to avoid obscuring the concepts of the described examples.
[0328] The description herein is provided to enable a person having ordinary skill in the art to make or use the disclosure. Various modifications to the disclosure will be apparent to a person having ordinary skill in the art, and the generic principles defined herein may be applied to other variations without departing from the scope of the disclosure. Thus, the disclosure is not limited to the examples and designs described herein but is to be accorded the broadest scope consistent with the principles and novel features disclosed herein.
Claims
1.A user equipment (UE) , comprising:one or more memories storing processor-executable code; andone or more processors coupled with the one or more memories and individually or collectively operable to execute the code to cause the UE to:receive a medium access control-control element message comprising transmit power control information for one or more uplink messages; andtransmit the one or more uplink messages based at least in part on the transmit power control information.2.The UE of claim 1, wherein the transmit power control information comprises an update to a close loop power control parameter.3.The UE of claim 2, wherein the transmit power control information further comprises a close loop index associated with the transmit power control information.4.The UE of claim 1, wherein the transmit power control information comprises an update to a pathloss offset parameter, and wherein the pathloss offset parameter is an offset from a pathloss associated with a downlink reference signal.5.The UE of claim 4, wherein the one or more processors are individually or collectively further operable to execute the code to cause the UE to:receive a configuration or indication of the downlink reference signal associated with the pathloss offset parameter.6.The UE of claim 4, wherein the downlink reference signal is one of a set of downlink pathloss reference signals, and wherein the downlink reference signal is associated with a lowest pathloss reference signal identification of the set of downlink pathloss reference signals, a highest pathloss reference signal identification of the set of downlink pathloss reference signals, a lowest pathloss value of the set of downlink pathloss reference signals, a highest pathloss value of the set of downlink pathloss reference signals, a downlink pathloss reference signal associated with a lowest transmission configuration indicator state of a set of active transmission configuration indicator states associated with the set of downlink pathloss reference signals, or a downlink pathloss reference signal associated with a highest transmission configuration indicator state of the set of active transmission configuration indicator states associated with the set of downlink pathloss reference signals.7.The UE of claim 1, wherein the transmit power control information comprises an update to an open loop power control parameter.8.The UE of claim 1, wherein the transmit power control information is common to a plurality of uplink channels or uplink signals or is specific to one uplink channel or uplink signal.9.The UE of claim 1, wherein the transmit power control information comprises an indication of an absolute transmit power control parameter value or an indication of an offset from a previous transmit power control parameter value.10.The UE of claim 9, wherein the one or more processors are individually or collectively further operable to execute the code to cause the UE to:receive a radio resource control message indicating whether the transmit power control information comprises the indication of the absolute transmit power control parameter value or the indication of the offset from the previous transmit power control parameter value.11.The UE of claim 9, wherein the transmit power control information is associated with an identification, and wherein the previous transmit power control parameter value is an initial transmit power control parameter value associated with the identification or a last received transmit power control parameter value associated with the identification.12.The UE of claim 11, wherein the one or more processors are individually or collectively further operable to execute the code to cause the UE to:receive a control message indicating the initial transmit power control parameter value.13.The UE of claim 1, wherein the medium access control-control element message indicates an identification of a transmission configuration indicator state, a pathloss reference signal, an open loop power control parameter set, a bandwidth part, a serving cell, a sounding reference signal resource set, a physical uplink control channel resource, or some combination thereof associated with the transmit power control information.14.The UE of claim 1, wherein the one or more processors are individually or collectively further operable to execute the code to cause the UE to:receive a radio resource control message indicating whether the UE will receive one or more downlink control information messages comprising additional transmit power control information.15.The UE of claim 1, wherein the one or more processors are individually or collectively further operable to execute the code to cause the UE to:receive one or more downlink control information messages comprising additional transmit power control information, wherein, to transmit the one or more uplink messages, the one or more processors are individually or collectively further operable to:transmit the one or more uplink messages based at least in part on the additional transmit power control information.16.The UE of claim 1, wherein the one or more uplink messages comprise one or more physical uplink control channel messages, one or more physical uplink shared channel messages, one or more sounding reference signals, or some combination thereof.17.A user equipment (UE) , comprising:one or more memories storing processor-executable code; andone or more processors coupled with the one or more memories and individually or collectively operable to execute the code to cause the UE to:receive a downlink control information message indicating a transmit power control parameter for one or more uplink messages, wherein the transmit power control parameter comprises:an update to an open loop power control parameter relative to a previous open loop power control parameter; oran update to a pathloss offset parameter, wherein the pathloss offset parameter is an offset from a pathloss associated with a downlink reference signal; andtransmit the one or more uplink messages based at least in part on the transmit power control parameter.18.The UE of claim 17, wherein the one or more processors are individually or collectively further operable to execute the code to cause the UE to:receive a configuration or indication of the downlink reference signal.19.The UE of claim 17, wherein:the downlink reference signal is one of a set of downlink pathloss reference signals, andthe downlink reference signal is associated with a lowest pathloss reference signal identification of the set of downlink pathloss reference signals, a highest pathloss reference signal identification of the set of downlink pathloss reference signals, a lowest pathloss value of the set of downlink pathloss reference signals, a highest pathloss value of the set of downlink pathloss reference signals, a downlink pathloss reference signal associated with a lowest transmission configuration indicator state of a set of active transmission configuration indicator states associated with the set of downlink pathloss reference signals, or a downlink pathloss reference signal associated with a highest transmission configuration indicator state of the set of active transmission configuration indicator states associated with the set of downlink pathloss reference signals.20.The UE of claim 17, wherein the update to the pathloss offset parameter comprises an indication of an absolute pathloss offset value or an indication of an offset from a previous pathloss offset value.21.The UE of claim 20, wherein the one or more processors are individually or collectively further operable to execute the code to cause the UE to:receive a radio resource control message indicating whether the offset comprises the indication of the absolute pathloss offset value or the indication of the offset from the previous pathloss offset value.22.The UE of claim 17, wherein the update to the open loop power control parameter is associated with an identification, and wherein the previous open loop power control parameter comprises an initial open loop control parameter associated with the identification or a last received open loop power control parameter associated with the identification.23.The UE of claim 17, wherein the downlink control information message indicates an identification of a transmission configuration indicator state, a pathloss reference signal, an open loop power control parameter set, a bandwidth part, a serving cell, a sounding reference signal resource set, a physical uplink control channel resource, or some combination thereof associated with the transmit power control parameter.24.The UE of claim 17, wherein the one or more processors are individually or collectively further operable to execute the code to cause the UE to:receive a radio resource control message indicating whether the UE will receive one or more additional downlink control information messages comprising additional transmit power control information.25.The UE of claim 17, wherein the one or more processors are individually or collectively further operable to execute the code to cause the UE to:receive one or more additional downlink control information messages comprising additional transmit power control information, wherein transmitting the one or more uplink messages comprises:transmit the one or more uplink messages based at least in part on the additional transmit power control information.26.The UE of claim 17, wherein the downlink control information message is a scheduling downlink control information or a group common downlink control information.27.The UE of claim 17, wherein the one or more uplink messages comprise one or more physical uplink control channel messages, one or more physical uplink shared channel messages, one or more sounding reference signals, or some combination thereof.28.A method for wireless communications by a user equipment (UE) , comprising:receiving a medium access control-control element message comprising transmit power control information for one or more uplink messages; andtransmitting the one or more uplink messages based at least in part on the transmit power control information.29.The method of claim 28, wherein the transmit power control information comprises an update to a close loop power control parameter.30.A method for wireless communications by a user equipment (UE) , comprising:receiving a downlink control information message indicating a transmit power control parameter for one or more uplink messages, wherein the transmit power control parameter comprises:an update to an open loop power control parameter relative to a previous open loop power control parameter; oran update to a pathloss offset parameter, wherein the pathloss offset parameter is an offset from a pathloss associated with a downlink reference signal; andtransmitting the one or more uplink messages based at least in part on the transmit power control parameter.