Power adjustment signaling for relays

Abstract

A method for wireless communication at a wireless device and related apparatus is provided. In the method, the wireless device receives an indication of a power adjustment between a set of resource allocations from a first moment in time to a second moment in time. The set of resource allocations is associated with wireless communications between a network node and a user equipment (UE) via the wireless device. The wireless device then adjusts a power back-off (BO) of the wireless device based on the indication of the power adjustment between the set of resource allocations. The method provides power adjustment signaling to the wireless device to enable dynamic adjustment of the power BO of the wireless device based on the resource allocation of incoming signals. Thus, it improves the energy efficiency of the wireless device.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims the benefit of U.S. patent application serial number 17 / 821,364, filed on August 22, 2022, entitled “POWER ADJUSTMENT SIGNALING FOR REPEATERS,” which is expressly incorporated herein by reference in its entirety. Technical Field

[0003] The present disclosure relates generally to communication systems, and more particularly to methods and apparatus for power adjustment signaling for repeaters. Background Art

[0004] Wireless communication systems are widely deployed to provide a variety of telecommunication services, such as telephony, video, data, messaging, and broadcast. Typical wireless communication systems may employ multiple access technologies capable of supporting communication with multiple users by sharing available system resources. Examples of such multiple access technologies include code division multiple access (CDMA) systems, time division multiple access (TDMA) systems, frequency division multiple access (FDMA) systems, orthogonal frequency division multiple access (OFDMA) systems, single carrier frequency division multiple access (SC-FDMA) systems, and time division synchronous code division multiple access (TD-SCDMA) systems.

[0005] These multiple access technologies have been adopted in various telecommunication standards to provide a common protocol that enables different wireless devices to communicate at city, country, region, and even global levels. An example telecommunication standard is 5G New Radio (NR). 5GNR is part of the continuous mobile broadband evolution promulgated by the Third Generation Partnership Project (3GPP) to meet new requirements associated with latency, reliability, security, scalability (e.g., with the Internet of Things (IoT)) and other requirements. 5G NR includes services associated with enhanced mobile broadband (eMBB), massive machine type communication (mMTC), and ultra-reliable low latency communication (URLLC). Certain aspects of 5G NR may be based on 4G Long Term Evolution (LTE) standards. It is necessary to further improve 5G NR technology. In addition, these improvements may also be applicable to other multiple access technologies and telecommunication standards that employ these technologies. Summary of the invention

[0006] A simplified summary of one or more aspects is presented below to provide a basic understanding of these aspects. This summary is not an extensive review of all contemplated aspects. This summary neither identifies the key or important elements of all aspects, nor describes the scope of any or all aspects. Its sole purpose is to present some concepts of one or more aspects in a simplified form as a prelude to a more detailed description presented later.

[0007] In one aspect of the present disclosure, a method, a computer-readable medium, and an apparatus are provided. The apparatus may include a memory and at least one processor coupled to the memory. Based at least in part on information stored in the memory, the at least one processor may be configured to receive an indication of a power adjustment between resource allocation sets from a first time to a second time, wherein the resource allocation sets are associated with communication between a network node and a user equipment (UE) via a wireless device; and adjust a power backoff (BO) of the wireless device based on the indication of the power adjustment between the resource allocation sets.

[0008] To achieve the aforementioned and related purposes, one or more aspects include the features fully described below and particularly pointed out in the claims. The following description and the accompanying drawings set forth in detail some exemplary features of one or more aspects. However, these features indicate only some of the various ways in which the principles of the various aspects can be employed. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 is a diagram illustrating an example of a wireless communication system and an access network.

[0010] Figure 2A is a diagram illustrating an example of a first frame according to various aspects of the present disclosure.

[0011] Figure 2B is a diagram illustrating an example of downlink (DL) channels within a subframe according to various aspects of the present disclosure.

[0012] Figure 2C is a diagram illustrating an example of a second frame according to various aspects of the present disclosure.

[0013] Figure 2D is a diagram illustrating an example of uplink (UL) channels within a subframe according to various aspects of the present disclosure.

[0014] Figure 3 is a diagram illustrating an example of a base station and a UE in an access network.

[0015] Figure 4 is a diagram illustrating wireless communication between a base station and a UE via a relay in an access network.

[0016] Figure 5 is a diagram illustrating resource allocation for wireless communications from multiple base stations through a relay in an access network.

[0017] Figure 6 is a diagram illustrating a method of performing wireless communications at a wireless device according to various aspects of the present disclosure.

[0018] Figure 7is a call flow diagram illustrating a method of wireless communication according to various aspects of the present disclosure.

[0019] Figure 8 is a flow chart illustrating a method of wireless communication at a wireless device according to various aspects of the present disclosure.

[0020] Fig. 9 is a flow chart illustrating a method of wireless communication at a wireless device according to various aspects of the present disclosure.

[0021] Fig.10 is a flow chart illustrating a method of wireless communication at a network node according to various aspects of the present disclosure.

[0022] Fig.11 is a flow chart illustrating a method of wireless communication at a network node according to various aspects of the present disclosure.

[0023] Fig.12 are diagrams illustrating examples of hardware implementations for example devices and / or network entities.

[0024] Fig.13 is a diagram illustrating an example of a hardware implementation for an example network entity.

[0025] Fig.14 is a diagram illustrating an example of a hardware implementation for an example network entity. DETAILED DESCRIPTION

[0026] The specific embodiments described below in conjunction with the accompanying drawings are descriptions of various configurations and do not represent the only configurations in which the concepts described herein can be practiced. In order to provide a thorough understanding of the various concepts, the specific embodiments include specific details. However, these concepts can be practiced without these specific details. In some cases, well-known structures and components are shown in block diagram form to avoid obscuring such concepts.

[0027] Several aspects of telecommunication systems are presented with reference to various apparatus and methods. These apparatus and methods are described in the following detailed description and illustrated in the accompanying drawings by various blocks, components, circuits, processes, algorithms, etc. (collectively referred to as "elements"). These elements may be implemented using electronic hardware, computer software, or any combination thereof. Whether these elements are implemented as hardware or software depends on the specific application and the design constraints imposed on the overall system.

[0028] As an example, an element, or any part of an element, or any combination of elements can be implemented as a "processing system", which includes one or more processors. Examples of processors include microprocessors, microcontrollers, graphics processing units (GPUs), central processing units (CPUs), application processors, digital signal processors (DSPs), reduced instruction set computing (RISC) processors, systems on chip (SoCs), baseband processors, field programmable gate arrays (FPGAs), programmable logic devices (PLDs), state machines, gating logic, discrete hardware circuits, and other suitable hardware configured to perform various functionalities described throughout the present disclosure. One or more processors in a processing system can execute software. Whether referred to as software, firmware, middleware, microcode, hardware description language, or other terms, software should be broadly interpreted as meaning instructions, instruction sets, codes, code segments, program codes, programs, subroutines, software components, applications, software applications, software packages, routines, subroutines, objects, executables, threads of execution, procedures, functions, or any combination thereof.

[0029] Thus, in one or more example aspects, specific implementations and / or use cases, the described functionality may be implemented in hardware, software, or any combination thereof. If implemented in software, the functionality may be stored or encoded as one or more instructions or codes on a computer-readable medium. Computer-readable media include computer storage media. Storage media may be any available media that can be accessed by a computer. As an example, such computer-readable media may include random access memory (RAM), read-only memory (ROM), electrically erasable programmable ROM (EEPROM), optical disk storage, magnetic disk storage, other magnetic storage devices, combinations of these types of computer-readable media, or any other medium that can be used to store computer-executable code in the form of instructions or data structures that can be accessed by a computer.

[0030] Although various aspects, specific implementations and / or use cases are described in this application by the illustration of some examples, additional or different aspects, specific implementations and use cases may be generated in many different arrangements and scenarios. The various aspects, specific implementations and / or use cases described herein can be implemented across many different platform types, devices, systems, shapes, sizes and packaging arrangements. For example, various aspects, specific implementations and / or use cases can be generated via integrated chip specific implementations and other devices based on non-module components (e.g., end-user devices, vehicles, communication equipment, computing equipment, industrial equipment, retail / purchase equipment, medical equipment, devices that enable artificial intelligence (AI), etc.). Although some examples may or may not be specifically for use cases or applications, the described examples may have a wide range of applicability. Various aspects, specific implementations and / or use cases may be in the range from chip-level or modular components to non-modular, non-chip-level specific implementations, and further to the range of aggregated, distributed or original equipment manufacturer (OEM) equipment or systems in conjunction with one or more technologies herein. In some actual settings, the equipment combined with the various aspects and features described may also include additional components and features for implementing and practicing the claimed and described aspects. For example, the transmission and reception of wireless signals necessarily include multiple components for analog and digital purposes (e.g., hardware components including antennas, RF chains, power amplifiers, modulators, buffers, processors, interleavers, adders / summers, etc.) The various techniques described herein can be practiced in a wide variety of devices of various sizes, shapes, and configurations, chip-level components, systems, distributed arrangements, aggregated or disaggregated components, end-user devices, etc.

[0031] The deployment of a communication system (such as a 5G NR system) can be arranged with various components or constituent parts in a variety of ways. In a 5G NR system or network, a network node, a network entity, a mobility element of a network, a radio access network (RAN) node, a core network node, a network element or a network equipment (such as a base station (BS), or one or more units (or one or more components) that perform base station functionality can be implemented in an aggregated or decomposed architecture. For example, a BS (such as a Node B (NB), an evolved NB (eNB), an NR BS, a 5G NB, an access point (AP), a transmit receive point (TRP) or a cell, etc.) can be implemented as an aggregated base station (also referred to as an independent BS or a monolithic BS) or a decomposed base station.

[0032] A converged base station may be configured to utilize a radio protocol stack physically or logically integrated within a single RAN node. A decomposed base station may be configured to utilize a protocol stack physically or logically distributed between two or more units, such as one or more central or centralized units (CUs), one or more distributed units (DUs), or one or more radio units (RUs). In some aspects, a CU may be implemented within a RAN node, and one or more DUs may be co-located with the CU, or alternatively, may be geographically or virtually distributed in one or more other RAN nodes. A DU may be implemented to communicate with one or more RUs. Each of a CU, a DU, and a RU may be implemented as a virtual unit, i.e., a virtual central unit (VCU), a virtual distributed unit (VDU), or a virtual radio unit (VRU).

[0033] Base station operation or network design may take into account the aggregated nature of base station functionality. For example, a disaggregated base station may be used in an integrated access backhaul (IAB) network, an open radio access network (O-RAN (network configuration such as that initiated by the O-RAN Alliance)), or a virtualized radio access network (vRAN, also known as a cloud radio access network (C-RAN)). Decomposition may include distributing functionality across two or more units at various physical locations, as well as virtually distributing functionality of at least one unit, which may enable flexibility in network design. Individual units of a disaggregated base station or disaggregated RAN architecture may be configured for wired or wireless communication with at least one other unit.

[0034] Figure 1 1 is a diagram 100 illustrating an example of a wireless communication system and an access network. The illustrated wireless communication system includes a disaggregated base station architecture. The disaggregated base station architecture may include one or more CUs 110 that may communicate directly with a core network 120 via a backhaul link, or indirectly with the core network 120 through one or more disaggregated base station units, such as a near real-time (near RT) RAN intelligent controller (RIC) 125 via an E2 link, or a non-real-time (non-RT) RIC 115 associated with a service management and orchestration (SMO) framework 105, or both. The CU 110 may communicate with one or more DUs 130 via corresponding midhaul links, such as an F1 interface. The DU 130 may communicate with one or more RUs 140 via corresponding fronthaul links. The RU 140 may communicate with corresponding UEs 104 via one or more radio frequency (RF) access links. In some implementations, a UE 104 may be served simultaneously by multiple RUs 140.

[0035] Each of the units (i.e., CU 110, DU 130, RU 140, and near-RT RIC 125, non-RT RIC 115, and SMO framework 105) may include or be coupled to one or more interfaces configured to receive or send signals, data, or information (collectively referred to as signals) via a wired or wireless transmission medium. Each of the units or an associated processor or controller that provides instructions to the communication interface of these units may be configured to communicate with one or more of the other units via a transmission medium. For example, these units may include a wired interface that is configured to receive signals or send signals to one or more of the other units via a wired transmission medium. Additionally, these units may include a wireless interface that may include a receiver, transmitter, or transceiver (such as an RF transceiver) configured to receive and / or send signals to one or more of the other units via a wireless transmission medium.

[0036] In some aspects, CU 110 may host one or more higher layer control functions. Such control functions may include radio resource control (RRC), packet data convergence protocol (PDCP), service data adaptation protocol (SDAP), etc. Each control function may be implemented using an interface configured to communicate signals with other control functions hosted by CU 110. CU110 may be configured to handle user plane functionality (i.e., central unit-user plane (CU-UP)), control plane functionality (i.e., central unit-control plane (CU-CP)), or a combination thereof. In some specific implementations, CU 110 may be logically split into one or more CU-UP units and one or more CU-CP units. When implemented in an O-RAN configuration, the CU-UP unit may communicate bidirectionally with the CU-CP unit via an interface (such as an E1 interface). As needed, CU 110 may be implemented to communicate with DU 130 for network control and signaling.

[0037] DU 130 may correspond to a logical unit that includes one or more base station functions for controlling the operation of one or more RUs 140. In some aspects, DU 130 may host one or more of a radio link control (RLC) layer, a medium access control (MAC) layer, and one or more high physical (PHY) layers (such as modules for forward error correction (FEC) encoding and decoding, scrambling, modulation and demodulation, etc.) at least in part according to a functional split such as those defined by 3GPP. In some aspects, DU 130 may further host one or more low PHY layers. Each layer (or module) may be implemented using an interface that is configured to communicate signals with other layers (and modules) hosted by DU 130 or with control functions hosted by CU 110.

[0038] The lower layer functionality may be implemented by one or more RUs 140. In some deployments, the RU 140 controlled by the DU 130 may correspond to a logical node that hosts RF processing functions or low PHY layer functions (such as performing Fast Fourier Transform (FFT), Inverse FFT (iFFT), digital beamforming, physical random access channel (PRACH) extraction and filtering, etc.), or both, based at least in part on functional splitting (such as lower layer functional splitting). In such an architecture, the RU 140 may be implemented to handle over-the-air (OTA) communications with one or more UEs 104. In some implementations, real-time and non-real-time aspects of communicating with the control plane and user plane of the RU 140 may be controlled by the corresponding DU 130. In some scenarios, this configuration may enable the implementation of the DU 130 and the CU 110 in a cloud-based RAN architecture (such as a vRAN architecture).

[0039] The SMO framework 105 may be configured to support RAN deployment and configuration of non-virtualized network elements and virtualized network elements. For non-virtualized network elements, the SMO framework 105 may be configured to support the deployment of dedicated physical resources for RAN coverage requirements, which may be managed via an operation and maintenance interface (such as an O1 interface). For virtualized network elements, the SMO framework 105 may be configured to interact with a cloud computing platform (such as an open cloud (O-Cloud) 190) to perform network element lifecycle management (such as instantiating virtualized network elements) via a cloud computing platform interface (such as an O2 interface). Such virtualized network elements may include, but are not limited to, CU 110, DU 130, RU 140, and near-RT RIC 125. In some specific implementations, the SMO framework 105 may communicate with hardware aspects of the 4G RAN (such as an open eNB (O-eNB) 111) via the O1 interface. Additionally, in some specific implementations, the SMO framework 105 may communicate directly with one or more RUs 140 via the O1 interface. The SMO framework 105 may also include a non-RT RIC 115 configured to support the functionality of the SMO framework 105 .

[0040] The non-RT RIC 115 may be configured to include logic functions that enable non-real-time control and optimization of RAN elements and resources, artificial intelligence (AI) / machine learning (ML) (AI / ML) workflows including model training and updating, or policy-based guidance of applications / features in the near-RT RIC 125. The non-RT RIC 115 may be coupled to or in communication with the near-RT RIC 125 (such as via an A1 interface). The near-RT RIC 125 may be configured to include logic functions that enable near-real-time control and optimization of RAN elements and resources via data collection and actions through an interface (such as via an E2 interface) that connects one or more CUs 110, one or more DUs 130, or both, and the O-eNB with the near-RT RIC 125.

[0041] In some implementations, in order to generate an AI / ML model to be deployed in the near-RT RIC 125, the non-RT RIC 115 may receive parameters or external enrichment information from an external server. Such information may be utilized by the near-RT RIC 125 and may be received from a non-network data source or from a network function at the SMO framework 105 or the non-RT RIC 115. In some examples, the non-RT RIC 115 or the near-RT RIC 125 may be configured to adjust RAN behavior or performance. For example, the non-RT RIC 115 may monitor long-term trends and patterns of performance and employ AI / ML models to perform corrective actions through the SMO framework 105 (such as via reconfiguration of O1) or via the creation of RAN management policies (such as A1 policies).

[0042] At least one of the CU 110, the DU 130, and the RU 140 may be referred to as a base station 102. Therefore, the base station 102 may include one or more of the CU 110, the DU 130, and the RU 140 (each component is indicated by a dotted line to indicate that each component may be included in the base station 102 or may not be included in the base station). The base station 102 provides an access point to the core network 120 for the UE 104. The base station 102 may include a macro cell (a high-power cellular base station) and / or a small cell (a low-power cellular base station). Small cells include femto cells, pico cells, and micro cells. A network including both small cells and macro cells may be referred to as a heterogeneous network. A heterogeneous network may also include a home evolved Node B (eNB) (HeNB), which may provide services to a restricted group referred to as a closed subscriber group (CSG). The communication link between RU 140 and UE 104 may include uplink (UL) (also known as reverse link) transmission from UE 104 to RU 140 and / or downlink (DL) (also known as forward link) transmission from RU 140 to UE 104. The communication link may use multiple-input multiple-output (MIMO) antenna technology, including spatial multiplexing, beamforming and / or transmit diversity. The communication link may be through one or more carriers. For each carrier allocated in a carrier aggregation of up to Yx MHz (x component carriers) for transmission in each direction, the base station 102 / UE 104 may use a spectrum of up to Y MHz (e.g., 5MHz, 10MHz, 15MHz, 20MHz, 100MHz, 400MHz, etc.) bandwidth. These carriers may or may not be adjacent to each other. The allocation of carriers may be equivalent to DL and UL asymmetric (e.g., more or fewer carriers may be allocated to DL than to UL). Component carriers may include a primary component carrier and one or more secondary component carriers. The primary component carrier may be referred to as a primary cell (PCell) and the secondary component carrier may be referred to as a secondary cell (SCell).

[0043] Some UEs 104 may communicate with each other using a device-to-device (D2D) communication link 158. The D2D communication link 158 may use DL / UL wireless wide area network (WWAN) spectrum. The D2D communication link 158 may use one or more sidelink channels, such as a physical sidelink broadcast channel (PSBCH), a physical sidelink discovery channel (PSDCH), a physical sidelink shared channel (PSSCH), and a physical sidelink control channel (PSCCH). The D2D communication may be through a variety of wireless D2D communication systems, such as, for example, Bluetooth, Wi-Fi based on the Institute of Electrical and Electronics Engineers (IEEE) 802.11 standard, LTE, or NR.

[0044] The wireless communication system may also include a Wi-Fi AP 150 that communicates with a UE 104 (also referred to as a Wi-Fi station (STA)) via a communication link 154, for example, in a 5 GHz unlicensed spectrum, etc. When communicating in an unlicensed spectrum, the UE 104 / AP 150 may perform a clear channel assessment (CCA) to determine whether a channel is available prior to communication.

[0045] The electromagnetic spectrum is typically subdivided into various categories, bands, channels, etc. based on frequency / wavelength. In 5G NR, two initial operating bands have been identified as frequency range designations FR1 (410 MHz-7.125 GHz) and FR2 (24.25 GHz-52.6 GHz). Although a portion of FR1 is greater than 6 GHz, FR1 is often referred to (interchangeably) as the "sub-6 GHz" band in various documents and articles. A similar naming issue sometimes occurs with respect to FR2, which is often (interchangeably) referred to as the "millimeter wave" band in documents and articles, although it is different from the extremely high frequency (EHF) band (30 GHz–300 GHz) that is identified as the "millimeter wave" band by the International Telecommunication Union (ITU).

[0046] Frequencies between FR1 and FR2 are generally referred to as mid-band frequencies. Recent 5G NR research has identified the operating bands for these mid-band frequencies as frequency range designation FR3 (7.125GHz–24.25GHz). The bands falling within FR3 can inherit FR1 characteristics and / or FR2 characteristics, and thus the features of FR1 and / or FR2 can be effectively extended to mid-band frequencies. In addition, higher frequency bands are currently being explored to extend 5G NR operations to more than 52.6GHz. For example, three higher operating bands have been identified as frequency range designations FR2-2 (52.6GHz-71GHz), FR4 (71GHz-114.25GHz), and FR5 (114.25GHz-300GHz). Each of these higher frequency bands falls within the EHF band.

[0047] In view of the above, unless otherwise specified, if the term "6 GHz or less" is used herein, it may broadly refer to frequencies that may be less than 6 GHz, may be within FR1, or may include mid-band frequencies. In addition, unless otherwise specified, if the term "millimeter wave" is used herein, it may broadly refer to frequencies that may include mid-band frequencies, may be within FR2, FR4, FR2-2, and / or FR5, or may be within the EHF band.

[0048] The base station 102 and the UE 104 may each include multiple antennas (such as antenna elements, antenna panels, and / or antenna arrays) to facilitate beamforming. The base station 102 may send a beamformed signal 182 to the UE 104 in one or more transmit directions. The UE 104 may receive the beamformed signal from the base station 102 in one or more receive directions. The UE 104 may also send a beamformed signal 184 to the base station 102 in one or more transmit directions. The base station 102 may receive the beamformed signal from the UE 104 in one or more receive directions. The base station 102 / UE 104 may perform beam training to determine the best receive direction and transmit direction for each of the base station 102 / UE 104. The transmit direction and receive direction of the base station 102 may be the same or different. The transmit direction and receive direction of the UE 104 may be the same or different.

[0049] The base station 102 may include and / or be referred to as a gNB, a Node B, an eNB, an access point, a base transceiver station, a radio base station, a radio transceiver, a transceiver function, a basic service set (BSS), an extended service set (ESS), a transmit receive point (TRP), a network node, a network entity, a network equipment, or some other suitable term. The base station 102 may be implemented as an integrated access and backhaul (IAB) node, a relay node, a sidelink node, an aggregated (monolithic) base station with a baseband unit (BBU) (including a CU and a DU) and a RU, or as a decomposed base station including one or more of a CU, a DU, and / or a RU. A set of base stations that may include decomposed base stations and / or aggregated base stations may be referred to as a next generation (NG) RAN (NG-RAN).

[0050] The core network 120 may include an access and mobility management function (AMF) 161, a session management function (SMF) 162, a user plane function (UPF) 163, a unified data management (UDM) 164, one or more location servers 168, and other functional entities. The AMF 161 is a control node that handles signaling between the UE 104 and the core network 120. The AMF 161 supports registration management, connection management, mobility management, and other functions. The SMF 162 supports session management and other functions. The UPF 163 supports packet routing, packet forwarding, and other functions. The UDM 164 supports the generation of authentication and key agreement (AKA) credentials, user identity handling, access authorization, and subscription management. The one or more location servers 168 are illustrated as including a gateway mobile location center (GMLC) 165 and a location management function (LMF) 166. However, in general, the one or more location servers 168 may include one or more location / position servers, which may include one or more of the GMLC 165, LMF 166, position determination entity (PDE), serving mobile location center (SMLC), mobile location center (MPC), etc. GMLC 165 and LMF 166 support UE location services. GMLC 165 provides an interface for clients / applications (e.g., emergency services) to access UE positioning information. LMF 166 receives measurement and assistance information from NG-RAN and UE 104 via AMF 161 to calculate the location of UE 104. NG-RAN may determine the location of UE 104 using one or more positioning methods. Positioning UE 104 may involve signal measurements, position estimation, and optional speed calculation based on these measurements. Signal measurements may be performed by UE 104 and / or serving base station 102. The measured signals may be based on a satellite positioning system (SPS) 170 (e.g., one or more of a global navigation satellite system (GNSS), a global positioning system (GPS), a non-terrestrial network (NTN), or other satellite position / location systems), LTE signals, wireless local area network (WLAN) signals, Bluetooth signals, a terrestrial beacon system (TBS), sensor-based information (e.g., an atmospheric pressure sensor, a motion sensor), an NR enhanced cell ID (NR E-CID) method, NR signals (e.g., multi-round trip time (multi-RTT), DL angle of departure (DL-AoD), DL time difference of arrival (DL-TDOA), UL time difference of arrival (UL-TDOA), and UL angle of arrival (UL-AoA) positioning), and / or one or more of other systems / signals / sensors.

[0051] Examples of UE 104 include cellular phones, smart phones, session initiation protocol (SIP) phones, laptops, personal digital assistants (PDAs), satellite radios, global positioning systems, multimedia devices, video devices, digital audio players (e.g., MP3 players), cameras, game consoles, tablet computers, smart devices, wearable devices, vehicles, electric meters, gas pumps, large or small kitchen appliances, healthcare equipment, implants, sensors / actuators, displays, or any other similarly functional devices. Some of the UEs 104 may be referred to as IoT devices (e.g., parking meters, gas pumps, toasters, vehicles, heart monitors, etc.). UE 104 may also be referred to as stations, mobile stations, subscriber stations, mobile units, subscriber units, wireless units, remote units, mobile devices, wireless devices, wireless communication devices, remote devices, mobile subscriber stations, access terminals, mobile terminals, wireless terminals, remote terminals, mobile phones, user agents, mobile clients, clients, or some other suitable terminology. In some scenarios, the term UE may also be applied to one or more supporting devices, such as in a device cluster arrangement. One or more of these devices may access the network collectively and / or individually.

[0052] In some aspects, base station 102 can communicate with a repeater 197 (in Figure 3 ) sends communications to one or more UEs 104.

[0053] See again Figure 1 In some aspects, the base station 102 may include a repeater power control component 199. The repeater power control component 199 may be configured to measure, for the wireless device, a power adjustment between a set of resource allocations from a first moment to a second moment, wherein the set of resource allocations is associated with a communication between a network node and a UE via the wireless device; and to send, for the wireless device, an indication of the power adjustment between the set of resource allocations from the first moment to the second moment. Although the following description may focus on 5G NR, the concepts described herein may be applicable to other similar fields, such as LTE, LTE-A, CDMA, GSM, and other wireless technologies.

[0054] Figure 2A FIG200 is a diagram illustrating an example of a first subframe within a 5G NR frame structure. Figure 2B FIG230 is a diagram illustrating an example of DL channels within a 5G NR subframe. Figure 2C FIG250 is a diagram illustrating an example of a second subframe within a 5G NR frame structure. Figure 2DFIG280 is a diagram illustrating an example of UL channels within a 5G NR subframe. The 5G NR frame structure may be frequency division duplex (FDD), where for a particular set of subcarriers (carrier system bandwidth), subframes within that subcarrier set are dedicated to either DL or UL, or may be time division duplex (TDD), where for a particular set of subcarriers (carrier system bandwidth), subframes within that subcarrier set are dedicated to both DL and UL. Figure 2A , Figure 2C In the example provided, the 5G NR frame structure is assumed to be TDD, where subframe 4 is configured with slot format 28 (most of which are DL), where D is DL, U is UL, and F is flexible between DL / UL, and subframe 3 is configured with slot format 1 (all of which are UL). Although subframes 3 and 4 are shown as having slot formats 1 and 28, respectively, any particular subframe may be configured with any of the various available slot formats 0-61. Slot formats 0 and 1 are full DL and full UL, respectively. Other slot formats 2-61 include a mix of DL, UL and flexible symbols. The UE is configured with the slot format through the received slot format indicator (SFI) (dynamically configured through DL control information (DCI) or semi-statically / statically configured through radio resource control (RRC) signaling). Note that the following description also applies to the 5G NR frame structure as TDD.

[0055] FIG. 2A to FIG. 2D The frame structure is illustrated, and various aspects of the present disclosure may be applicable to other wireless communication technologies that may have different frame structures and / or different channels. A frame (10ms) may be divided into 10 subframes of equal size (1ms). Each subframe may include one or more time slots. A subframe may also include a microslot, which may include 7, 4 or 2 symbols. Each time slot may include 14 or 12 symbols, depending on whether the cyclic prefix (CP) is normal or extended. For a normal CP, each time slot may include 14 symbols, and for an extended CP, each time slot may include 12 symbols. The symbol on the DL may be a CP orthogonal frequency division multiplexing (OFDM) (CP-OFDM) symbol. The symbol on the UL may be a CP-OFDM symbol (for high throughput scenarios) or a discrete Fourier transform (DFT) extended OFDM (DFT-s-OFDM) symbol (also known as a single carrier frequency division multiple access (SC-FDMA) symbol) (for power-limited scenarios; limited to single-stream transmission). The number of slots within a subframe is based on the CP and parameter set.

[0056] The parameter set defines the subcarrier spacing (SCS) (see Table 1). The symbol length / duration can be scaled with 1 / SCS.

[0057]

[0058] Table 1: Parameter set, SCS and CP

[0059] For normal CP (14 symbols / slot), different parameter sets μ0 to 4 allow 1, 2, 4, 8, and 16 slots per subframe, respectively. For extended CP, parameter set 2 allows 4 slots per subframe. Thus, for normal CP and parameter set μ, there are 14 symbols / slot and 2 μ timeslots / subframe. The subcarrier spacing can be equal to 2 μ *15kHz, where μ is parameter set 0 to 4. Therefore, the subcarrier spacing for parameter set μ=0 is 15kHz, and the subcarrier spacing for parameter set μ=4 is 240kHz. The symbol length / duration is inversely related to the subcarrier spacing. FIG. 2A to FIG. 2D An example is provided for a normal CP with 14 symbols per slot and a parameter set μ=2 with 4 slots per subframe. The slot duration is 0.25 ms, the subcarrier spacing is 60 kHz, and the symbol duration is about 16.67 μs. Within a frame set, there may be one or more different bandwidth parts (BWPs) that are frequency-division multiplexed (see Figure 2B ). Each BWP may have a specific parameter set and CP (normal or extended).

[0060] A resource grid may be used to represent the frame structure. Each slot includes a resource block (RB) (also referred to as a physical RB (PRB)) extending over 12 consecutive subcarriers. The resource grid is divided into a plurality of resource elements (REs). The number of bits carried by each RE depends on the modulation scheme.

[0061] like Figure 2A As illustrated, some of the REs carry reference (pilot) signals (RS) for the UE. The RS may include a demodulation RS (DM-RS) (indicated as R for one particular configuration, but other DM-RS configurations are possible) and a channel state information reference signal (CSI-RS) for channel estimation at the UE. The RS may also include a beam measurement RS (BRS), a beam refinement RS (BRRS), and a phase tracking RS (PT-RS).

[0062] Figure 2BExamples of various DL channels within a subframe of a frame are illustrated. A physical downlink control channel (PDCCH) carries DCI within one or more control channel elements (CCEs) (e.g., 1, 2, 4, 8, or 16 CCEs), each CCE including six RE groups (REGs), each REG including 12 consecutive REs in an OFDM symbol of an RB. A PDCCH within a BWP may be referred to as a control resource set (CORESET). The UE is configured to monitor PDCCH candidates in a PDCCH search space (e.g., a common search space, a UE-specific search space) during a PDCCH monitoring opportunity on a CORESET, wherein the PDCCH candidates have different DCI formats and different aggregation levels. Additional BWPs may be located at higher and / or lower frequencies on the channel bandwidth. A primary synchronization signal (PSS) may be within symbol 2 of a particular subframe of a frame. The PSS is used by UE 104 to determine subframe / symbol timing and physical layer identification. A secondary synchronization signal (SSS) may be within symbol 4 of a particular subframe of a frame. The SSS is used by the UE to determine the physical layer cell identity group number and the radio frame timing. Based on the physical layer identity and the physical layer cell identity group number, the UE can determine the physical cell identifier (PCI). Based on the PCI, the UE can determine the location of the DM-RS. The physical broadcast channel (PBCH) carrying the master information block (MIB) can be logically grouped with the PSS and SSS to form a synchronization signal (SS) / PBCH block (also referred to as an SS block (SSB)). The MIB provides the number of RBs in the system bandwidth and the system frame number (SFN). The physical downlink shared channel (PDSCH) carries user data, broadcast system information not sent via the PBCH (such as a system information block (SIB)), and paging messages.

[0063] like Figure 2C As illustrated, some of the REs carry DM-RS (indicated as R for a particular configuration, but other DM-RS configurations are possible) for channel estimation at the base station. The UE may send a DM-RS for a physical uplink control channel (PUCCH) and a DM-RS for a physical uplink shared channel (PUSCH). The PUSCH DM-RS may be sent in the first or first two symbols of the PUSCH. Depending on whether a short PUCCH or a long PUCCH is sent and depending on the specific PUCCH format used, the PUCCH DM-RS may be sent in different configurations. The UE may send a sounding reference signal (SRS). The SRS may be sent in the last symbol of a subframe. The SRS may have a comb structure, and the UE may send the SRS on one of the teeth of the comb. The SRS may be used by the base station for channel quality estimation to achieve frequency-dependent scheduling of the UL.

[0064] Figure 2DExamples of various UL channels within a subframe of a frame are illustrated. The PUCCH may be located at a position as indicated in one configuration. The PUCCH carries uplink control information (UCI), such as scheduling requests, channel quality indicators (CQI), precoding matrix indicators (PMI), rank indicators (RI), and hybrid automatic repeat request (HARQ) acknowledgement (ACK) (HARQ-ACK) feedback (i.e., one or more HARQ ACK bits indicating one or more ACKs and / or negative ACKs (NACKs)). The PUSCH carries data and may be used to carry, among other things, a buffer status report (BSR), a power headroom report (PHR), and / or UCI.

[0065] Figure 3 375. The Controller / Processor 375 is a block diagram of a base station 310 in an access network communicating with a UE 350. In the DL, Internet Protocol (IP) packets may be provided to a controller / processor 375. The controller / processor 375 implements layer 3 and layer 2 functionality. Layer 3 includes a radio resource control (RRC) layer, and layer 2 includes a service data adaptation protocol (SDAP) layer, a packet data convergence protocol (PDCP) layer, a radio link control (RLC) layer, and a medium access control (MAC) layer. The controller / processor 375 provides RRC layer functionality associated with broadcasting of system information (e.g., MIB, SIB), RRC connection control (e.g., RRC connection paging, RRC connection establishment, RRC connection modification, and RRC connection release), inter-radio access technology (RAT) mobility, and measurement configuration for UE measurement reporting; PDCP layer functionality associated with header compression / decompression, security (encryption, decryption, integrity protection, integrity verification), and handover support functions; RLC layer functionality associated with transfer of upper layer packet data units (PDUs), error correction through ARQ, concatenation, segmentation and reassembly of RLC service data units (SDUs), re-segmentation of RLC data PDUs, and reordering of RLC data PDUs; and MAC layer functionality associated with mapping between logical channels and transport channels, multiplexing of MAC SDUs onto transport blocks (TBs), demultiplexing of MAC SDUs from TBs, scheduling information reporting, error correction through HARQ, priority handling, and logical channel prioritization.

[0066] The transmit (TX) processor 316 and receive (RX) processor 370 implement layer 1 functionality associated with various signal processing functions. Layer 1 (which includes the physical (PHY) layer) may include error detection on the transport channel, forward error correction (FEC) coding / decoding of the transport channel, interleaving, rate matching, mapping to the physical channel, modulation / demodulation of the physical channel, and MIMO antenna processing. The TX processor 316 handles the mapping to the signal constellation based on various modulation schemes (e.g., binary phase shift keying (BPSK), quadrature phase shift keying (QPSK), M-order phase shift keying (M-PSK), M-order quadrature amplitude modulation (M-QAM)). The coded and modulated symbols may then be separated into parallel streams. Each stream may then be mapped to an OFDM subcarrier, multiplexed with a reference signal (e.g., pilot) in the time and / or frequency domain, and then combined together using an inverse fast Fourier transform (IFFT) to produce a physical channel carrying a time domain OFDM symbol stream. The OFDM stream is spatially pre-coded to generate multiple spatial streams. Channel estimates from a channel estimator 374 may be used to determine the coding and modulation schemes, as well as for spatial processing. Channel estimates may be derived from reference signals and / or channel state feedback sent by the UE 350. Each spatial stream may then be provided to a different antenna 320 via a separate transmitter 318Tx. Each transmitter 318Tx may modulate a radio frequency (RF) carrier for transmission using a corresponding spatial stream.

[0067] At the UE 350, each receiver 354Rx receives a signal through its corresponding antenna 352. Each receiver 354Rx recovers the information modulated onto the RF carrier and provides the information to a receive (RX) processor 356. The TX processor 368 and the RX processor 356 implement layer 1 functionality associated with various signal processing functions. The RX processor 356 can perform spatial processing on the information to recover any spatial stream destined for the UE 350. If multiple spatial streams are destined for the UE 350, they can be combined into a single OFDM symbol stream by the RX processor 356. The RX processor 356 then converts the OFDM symbol stream from the time domain to the frequency domain using a fast Fourier transform (FFT). The frequency domain signal includes a separate OFDM symbol stream for each subcarrier of the OFDM signal. The symbols on each subcarrier and the reference signal are recovered and demodulated by determining the most likely signal constellation point sent by the base station 310. These soft decisions can be based on channel estimates calculated by the channel estimator 358. The soft decisions are then decoded and deinterleaved to recover the data and control signals originally sent on the physical channel by base station 310. The data and control signals are then provided to controller / processor 359, which implements layer 3 and layer 2 functionality.

[0068] The controller / processor 359 may be associated with a memory 360 that stores program codes and data. The memory 360 may be referred to as a computer readable medium. In the UL, the controller / processor 359 provides demultiplexing between transport channels and logical channels, packet reassembly, decryption, header decompression, and control signal processing to recover IP packets. The controller / processor 359 is also responsible for error detection using ACK and / or NACK protocols to support HARQ operations.

[0069] Similar to the functionality described in conjunction with DL transmissions performed by the base station 310, the controller / processor 359 provides RRC layer functionality associated with system information (e.g., MIB, SIB) acquisition, RRC connection, and measurement reporting; PDCP layer functionality associated with header compression / decompression and security (encryption, decryption, integrity protection, integrity verification); RLC layer functionality associated with delivery of upper layer PDUs, error correction through ARQ, concatenation, segmentation and reassembly of RLC SDUs, resegmentation of RLC data PDUs, and reordering of RLC data PDUs; and MAC layer functionality associated with mapping between logical channels and transport channels, multiplexing of MAC SDUs onto TBs, demultiplexing of MAC SDUs from TBs, scheduling information reporting, error correction through HARQ, priority handling, and logical channel prioritization.

[0070] Channel estimates derived by the channel estimator 358 based on a reference signal or feedback sent by the base station 310 may be used by the TX processor 368 to select the appropriate coding and modulation schemes and to facilitate spatial processing. The spatial streams generated by the TX processor 368 may be provided to different antennas 352 via separate transmitters 354Tx. Each transmitter 354Tx may modulate an RF carrier with a corresponding spatial stream for transmission.

[0071] UL transmissions are processed at the base station 310 in a manner similar to that described in conjunction with the receiver functionality at the UE 350. Each receiver 318Rx receives a signal through its respective antenna 320. Each receiver 318Rx recovers information modulated onto an RF carrier and provides the information to the RX processor 370.

[0072] The controller / processor 375 may be associated with a memory 376 that stores program codes and data. The memory 376 may be referred to as a computer readable medium. In the UL, the controller / processor 375 provides demultiplexing between transport channels and logical channels, packet reassembly, decryption, header decompression, control signal processing to recover IP packets. The controller / processor 375 is also responsible for error detection using ACK and / or NACK protocols to support HARQ operations.

[0073] At least one of the TX processor 316, the RX processor 370, and the controller / processor 375 may be configured to combine Figure 1 The repeater power control component 199 performs various aspects.

[0074] Figure 4 4 is a diagram illustrating wireless communication between a base station and a UE in an access network via a relay. Figure 4 As shown, the base station 402 can communicate with the UE 406 via a repeater 404. The repeater 404 can be connected to the base station 402 through a backhaul channel (or backhaul link) 412, and connected to the UE 406 through an access channel 414. The repeater 404 can receive a signal from the base station 402 and forward (i.e., send) the received signal to the UE 406. The repeater 404 may include a power amplifier (PA) to amplify the received signal before forwarding the received signal to the UE 406. The repeater 404 can be used to expand the coverage area of ​​the base station 402. In addition, in a multi-hop wireless network, multiple repeaters 404 can be deployed to continuously amplify and forward the transmitted signal between the base station 402 and the UE 406. In the present disclosure, the term "hop" can refer to an intermediate stage of relaying a signal transmitted between the source and the destination between the source and the destination. Therefore, a "multi-hop wireless network" can refer to a wireless network including multiple intermediate stations that continuously relay signals from a source to a destination. Each hop in a multi-hop wireless network may have an associated repeater for amplifying and forwarding transmitted signals.

[0075] In wireless communications (such as Figure 4 ), the link budget (LB) of the link in which the repeater 404 is deployed can be determined by the access channel 414. In addition to the LB optimization of the access channel, the power efficiency can be represented by the power consumption utilization of a specific hop, because some hops may not be connected to the grid. For example, some of the repeaters 404 can be powered by renewable energy.

[0076] In order to prevent the PA from reaching a saturation point and entering a nonlinear operating region where the transmitted signal may suffer severe interference, the PA may be operated at a power level below the saturation point to ensure that the PA continues to operate in a linear region or a substantially linear region, even if the input power is slightly increased. The amount by which the power level is reduced from the saturation point may be referred to as the power back-off (BO) or back-off (BO) of the PA. The power BO may correspond to the ratio between the maximum power that the PA can transmit (i.e., the maximum transmit power of the PA) and the signal power level of the PA.

[0077] Since the PA efficiency of repeater 404 is determined by the power BO of the PA, the power BO of the PA at the repeater may have a direct impact on the LB of the link. Therefore, optimization of PA efficiency may play an important role in deployment efficiency.

[0078] However, optimizing the power efficiency of the PA at the repeater remains a challenging task. One of the reasons is the dynamic resource allocation in DL transmission. In DL transmission, the resource allocation may vary from time slot to time slot, or even from symbol to symbol. In the present disclosure, the term "resource allocation" may refer to the allocation of time domain and frequency domain resources for sending signals to the UE. For example, resource allocation may include allocating certain symbols (time domain resources) and certain RBs (frequency domain resources) for sending signals to the UE.

[0079] Since the power per RE is usually kept constant, the total power of the PA of the repeater may change. Since it is challenging to perform fast enough power tracking at the symbol level or even the slot level, the power BO of the PA at the repeater may be set to accommodate the highest possible power. However, at this power BO setting, the efficiency of the PA at the repeater may be poor in most cases (e.g., when the power is not at maximum).

[0080] Additionally, since a relay may serve more than one BS simultaneously, the dynamic allocation problem may become more severe when each of the multiple BSs has its own allocation.

[0081] Figure 5 5 is a diagram illustrating resource allocation for wireless communications from multiple BSs through relays in an access network. Figure 5 In the example, base station 1 (522) can communicate with user equipment 1 (562) through repeater 504, and base station 2 (524) can communicate with user equipment 2 (564) through repeater 504. Figure 5 As shown, two base stations (base station 1 and base station 2) can use the same repeater 504 to communicate with corresponding UEs. The two base stations can each have their own resource allocation (resource allocation 512, resource allocation 514). Therefore, the power BO of the PA of the repeater 504 can be set to accommodate the highest possible power from both base station 1 (522) and base station 2 (524), which can reduce the power efficiency of the PA of the repeater 504.

[0082] The present disclosure proposes a power adjustment signaling method for a relay for solving these problems. Some aspects of the present disclosure may be performed by a network node. The network node may be Figure 1 A base station 102 or a component of a base station in an access network of Fig.12The network entity 1202 in. The signaling method described herein may include measuring, for a wireless device, a power adjustment between a resource allocation set from a first moment to a second moment, wherein the resource allocation set is associated with wireless communication between a network node and a UE via a wireless device; and sending, for the wireless device, an indication of the power adjustment between the resource allocation set from the first moment to the second moment. Some aspects of the present disclosure may be performed by a wireless device. The wireless device may be a controller coupled to a repeater. In some aspects, the controller may be integrated into a corresponding repeater and become a component of the repeater. In this case, the signaling method described herein may be performed by a repeater that has integrated the functionality of the controller. The signaling method may include receiving an indication of a power adjustment between a resource allocation set from a first moment to a second moment, wherein the resource allocation set is associated with wireless communication between a network node and a UE via a wireless device; and adjusting the power BO of the wireless device based on the indication of the power adjustment between the resource allocation sets. The method may provide power adjustment signaling to the wireless device so that the power BO of the wireless device can be dynamically adjusted based on the resource allocation of the incoming signal. Therefore, the signaling method may improve the energy efficiency of the wireless device.

[0083] Figure 6 600 is a diagram illustrating a method of wireless communication at a wireless device according to various aspects of the present disclosure. Figure 6 As shown, the base station 602 can communicate with the UE 606 via the repeater 604. The repeater 604 can be connected to the base station 602 via the backhaul channel 612, and connected to the UE 606 via the access channel 614. The repeater 604 can be coupled by a controller 608 for controlling the repeater 604. The controller 608 can control the operation of the repeater 604, measure the operating parameters, and communicate with the base station 602 or other entities in the access network. The controller 608 can be any device capable of performing these functionalities. In one example, the controller 608 can be a UE or a component of the UE. In one configuration, the controller 608 can be integrated into the repeater 604 and become a component of the repeater 604.

[0084] like Figure 6 As shown, for a BS that transmits using a repeater (or multiple repeaters in the case of multi-hop), the BS can signal power adjustments between allocations. Figure 6As shown, the base station 602 can signal the power adjustment between the two allocations. The signaling can be provided to the controller 608 by the base station 602 in advance enough time so that the controller 608 can read the signaling and prepare the relevant control for the repeater 604. The controller 608 can control the power BO of the repeater 604 based on the earlier allocation, and the measurement can be performed on the earlier allocation for automatic gain control (AGC) convergence. In one example, the controller 608 can control the power BO of the repeater 604 by adjusting the low noise amplifier (LNA) of the repeater 604. In one example, the base station 602 can signal the power adjustment in the next allocation to the repeater 604 (or multiple repeaters in the case of multi-hop) in advance by a single time slot, and the next allocation can be different from the previous allocation that signals such a report. The signaling can also include the duration of the power adjustment (i.e., for how many symbols).

[0085] Figure 7 700 is a call flow diagram illustrating a method of wireless communication according to various aspects of the present disclosure. Figure 7 As shown, at 710, base station 702 may send a signal to repeater 704. Repeater 704 may amplify the signal and send the amplified signal to UE 706 at 712. Repeater 704 may have a controller 708 coupled to repeater 704. Base station 702 may be Figure 1 A base station 102 or a component of a base station in an access network, or Fig.12 1202 in a hardware implementation of the network entity 1202. In some aspects, at 714, the controller 708 may send a capability indication to the base station 702. The capability indication may indicate the ability of the relay 704 to adjust its power BO. In some aspects, the base station may determine the ability of the relay 704 to adjust its power BO based on the capability indication received from the controller 708 at 716. At 718, the base station 702 may send an indication of power adjustment between resource allocation sets from a first time to a second time to the controller 708. The resource allocation set may be associated with a signal sent between the base station 702 and the UE 706 via the relay 704 (e.g., the signal sent at 710). In some aspects, if it is determined at 716 that the relay 704 has the ability to adjust the power BO, the base station 702 may send an indication of the power adjustment. At 720, the controller 708 may adjust the power BO of the relay 704 based on the indication of the power adjustment between the resource allocation sets.

[0086] In some aspects, the base station 702 may signal the controller 708 (via, for example, a PDCCH or a medium access control (MAC) control element (MAC-CE)) whenever the allocation is to be updated. The signal may include the amount of power adjustment (in dB) compared to a previously known report, and the duration (in symbols / slots) over which the power adjustment is associated. When multiple repeaters are used (e.g., in a multi-hop scenario), signaling may be provided for all repeaters / hops in the link.

[0087] In some aspects, the controller 708 or the repeater 704 may not support dynamic BO control. In this case, the Figure 7 Thus, to prevent wasting resources, the relay 704 or controller 708 may signal the network (eg, to the base station 702) (via, for example, MAC-CE or RRC) to indicate whether step 718 is to be utilized.

[0088] In some aspects, the controller 708 may receive signaling from the base station 702 (at 718) and accordingly adjust the power BO of the repeater 704 at 720. The adjustment of the power BO may be performed by adjusting the transmit power of the PA (i.e., the signal power level) or by adjusting the maximum transmit power of the PA (i.e., the power supply to the PA) to optimize power consumption.

[0089] In some aspects, relay 704 may serve more than one BS, and each of the BSs may have its own resource allocation. Figure 5 As shown, the relay 504 can serve two BSs (522, 524), and each of the BSs (522, 524) can have its own allocation (resource allocation 512, resource allocation 514). In this case, the relay (or controller) can combine the reports from all BSs and determine the adjustment to the power BO based on the predicted power of the combined signal.

[0090] As described above, the power BO of the PA can be adjusted / optimized to achieve additional power efficiency by adjusting the transmit power of the PA (i.e., the signal power level) or adjusting the maximum transmit power of the PA (i.e., the power supply to the PA). Since the individual controller / repeater may not be aware of the network-level standards for link optimization, the BS can provide the controller / repeater with an indicator on how to adjust / optimize the power BO (i.e., how to utilize the additional power efficiency of the PA). That is, the repeater may have two options to achieve the same adjusted / optimized power BO. The repeater may transmit the same total power, but adjust the maximum transmit power of the PA relative to the signal power. Alternatively, the repeater may adjust the transmit power, but keep the maximum transmit power of the PA in the same operating point.

[0091] For example, in a multi-hop communication between a BS and a UE including multiple repeaters, when a hop is not the last hop in the multi-hop link (and therefore the repeater associated with the hop is not the last repeater), the SNR can be expected to be high (i.e., the SNR of the backhaul channel is high in a typical deployment). In this case, it may be more optimal to utilize the additional power efficiency of the PA for power saving (especially when the repeater is powered by green energy and is limited by power supply). That is, for a repeater that is not the last repeater in the multi-hop link, the power BO adjustment of the repeater may be performed by sending the same total power but adjusting the maximum transmit power of the PA relative to the signal power. On the other hand, for a repeater in the last hop in the multi-hop link, the SNR can be expected to be low (i.e., the SNR of the access channel is not high in a typical deployment). In this case, it may be more optimal to utilize the additional power efficiency of the PA to send additional power for range extension or modulation increase.

[0092] In some aspects, the network (eg, BS) may signal (via, eg, MAC-CE or RRC) to each controller / relay in a multi-hop link regarding the configuration of each hop (eg, regarding options to adjust power BO).

[0093] Figure 8 800 is a flowchart illustrating a method of wireless communication at a wireless device according to various aspects of the present disclosure. The method may be performed by a wireless device. The method provides power adjustment signaling to the wireless device to enable dynamic adjustment of the power BO of the wireless device based on the resource allocation of the incoming signal. Therefore, the method improves the energy efficiency of the wireless device.

[0094] like Figure 8 As shown, at 802, the wireless device may receive an indication of a power adjustment between a set of resource allocations from a first moment to a second moment. The set of resource allocations may be associated with wireless communication between a network node and a UE via the wireless device. In some aspects, the wireless device may be a controller coupled to a repeater. The controller may be controller 608, 708, and the repeater may be repeater 604, 704. In some aspects, the controller may be integrated into the corresponding repeater and become a component of the repeater. For example, controller 608 may be integrated into repeater 604 and become a component of repeater 604, and controller 708 may be integrated into repeater 704 and become a component of repeater 704. In those cases, the method may be performed by a repeater that has integrated the functionality of a controller. The network node may be Figure 1 A base station or a component of a base station in an access network, or a core network component (e.g., base station 102, 310; CU 110; DU 130; RU 140; base station 402, 522, 524, 602, 702; or Fig.12The network entity 1202 in the hardware specific implementation of the present invention). The repeater may be the repeater 604, 704. The repeater may be configured to amplify a signal received from the BS and transmit the amplified signal to the UE. The UE may be Fig.12 UE 104, 350, 406, 562, 564, 606, 706 or device 1204 in a hardware specific implementation of. Figure 6 Various aspects of a network node sending a signal to a repeater are illustrated. Figure 6 As shown, in one configuration, a network node (e.g., base station 602) may send a signal to a wireless device (e.g., repeater 604) at 612. Repeater 604 may be configured to amplify the signal and send the amplified signal to UE 606. Figure 7 Various aspects of a wireless device receiving an indication of a power adjustment between resource allocation sets from a first time to a second time are illustrated. For example, at 718, the wireless device (controller 708) may receive an indication of a power adjustment between resource allocation sets from a first time to a second time.

[0095] At 804, a power BO of the wireless device can be adjusted based on the indication of power adjustment between resource allocation sets.For example, at 720, a power BO of the wireless device can be adjusted based on the indication of power adjustment between resource allocation sets.

[0096] Fig. 9 900 is a flowchart illustrating a method of wireless communication at a wireless device according to various aspects of the present disclosure. The method may be performed by a wireless device. The method provides power adjustment signaling to the wireless device to enable dynamic adjustment of the power BO of the wireless device based on the resource allocation of the incoming signal. Therefore, the method improves the energy efficiency of the wireless device.

[0097] like Fig. 9 As shown, at 904, the wireless device may receive an indication of a power adjustment between resource allocation sets from a first moment to a second moment. The resource allocation set may be associated with wireless communication between a network node and a UE via a wireless device. Step 904 may be the same as step 802 in flowchart 800. For details of step 904, reference may be made to the relevant description in conjunction with flowchart 800. For the sake of brevity, these steps are not repeatedly described here. For example, at 718, the wireless device (controller 708) may receive an indication of a power adjustment between resource allocation sets from a first moment to a second moment.

[0098] In some aspects, the wireless communication between the network node and the UE may be a multi-hop communication including multiple hops. In this case, depending on the location of the wireless device in the multiple hops, the adjustment of the power BO of the wireless device may be accomplished by adjusting the maximum transmit power of the PA at the wireless device or adjusting the signal power level of the PA at the wireless device.

[0099] like Fig. 9 As shown, at 906, the location of the wireless device in the plurality of hops may be determined. The determination may be performed by a network node. If it is determined that the wireless device is not at the last hop in the plurality of hops, the adjustment of the power BO of the wireless device may be accomplished by adjusting the maximum transmit power of the PA at the wireless device at 908. On the other hand, if it is determined that the wireless device is at the last hop in the plurality of hops, the adjustment of the power BO of the wireless device may be accomplished by adjusting the signal power level of the PA at the wireless device at 910.

[0100] For example, at 720, the controller 708 may adjust the power BO of the wireless device (repeater 704). If it is determined that the wireless device is not at the last hop of the multiple hops, the controller 708 may adjust the power BO of the wireless device by adjusting the maximum transmit power of the PA at the wireless device. On the other hand, if it is determined that the wireless device is at the last hop of the multiple hops, the controller 708 may adjust the power BO of the wireless device by adjusting the signal power level of the PA at the wireless device.

[0101] In some aspects, adjusting the maximum transmit power of the PA may correspond to a first adjustment to power consumption of the wireless device, and adjusting the signal power level of the PA may correspond to a second adjustment to a link budget of an access channel or a backhaul channel.

[0102] In some aspects, the resource allocation set may be a contiguous resource allocation set or a non-contiguous resource allocation set.The power adjustment may be a power difference between a resource allocation set at a first time and a resource allocation set at a second time.

[0103] In some aspects, the resource allocation set may be a set of time slots or a set of symbols. The power adjustment may be associated with: (1) a change in power of the set of time slots or the set of symbols from a first time instant to a second time instant; and (2) a number of time slots or symbols to which the power adjustment is applied.

[0104] In some aspects, receiving an indication of a power adjustment between resource allocation sets from a first time instant to a second time instant may include receiving the indication of a power adjustment between resource allocation sets from the first time instant to the second time instant one slot or one symbol prior to the second time instant.

[0105] See also Fig. 9In some aspects, at 902, the wireless device may send a capability indication to the network node before receiving the indication of the power adjustment. The capability indication may indicate the ability of the wireless device to adjust the power BO of the wireless device. For example, at 714, the wireless device (a combination of the repeater 704 and the controller 708) may send a capability indication to the base station 702 before receiving the indication of the power adjustment from the base station 702. The capability indication may indicate the ability of the wireless device to adjust the power BO.

[0106] See also Fig. 9 In some aspects, the wirelessly received indication of the power adjustment may be referred to as a first indication of the power adjustment, the network node may be referred to as a first network node, and the network node may be associated with a plurality of network nodes. In addition to the first indication, at 912, the wireless device may receive a second indication of a power adjustment between a second resource allocation set from a first time to a second time. The second resource allocation set may be associated with a second wireless communication between a second network node and the wireless device.

[0107] At 914, the wireless device may adjust the power BO of the wireless device based on the first indication and the second indication.For example, at 720, the wireless device (the combination of the repeater 704 and the controller 708) may adjust its power BO based on the first indication and the second indication.

[0108] In some aspects, the indication may be received from a network node, and the wireless device may be at least one relay, at least one relay device, or at least one controller. For example, the relay or relay device may be a relay 604, 704, and the controller may be a controller 608, 708, such as Figure 6 and Figure 7 shown.

[0109] In some aspects, the indication may be received by the wireless device via a physical downlink control channel (PDCCH) or a medium access control (MAC) control element (MAC-CE).

[0110] Fig.10 1000 is a flowchart illustrating a method of wireless communication at a network node according to various aspects of the present disclosure. The method may be performed by a network node. The network node may be Figure 1 A base station or a component of a base station in an access network, or a core network component (e.g., base station 102, 310; CU 110; DU 130; RU 140; base station 402, 522, 524, 602, 702; or Fig.12 The method provides power adjustment signaling to the wireless device so that the power BO of the wireless device can be dynamically adjusted based on the resource allocation of the incoming signal. Therefore, the method improves the energy efficiency of the wireless device.

[0111] like Fig.10 As shown, at 1002, the network node may measure, for the wireless device, a power adjustment between a resource allocation set from a first moment to a second moment. The resource allocation set may be associated with wireless communication between the network node and the UE via the wireless device. In some aspects, the wireless device may be a controller coupled to a repeater. The controller may be controller 608, 708, and the repeater may be repeater 604, 704. In some aspects, the controller may be integrated into the corresponding repeater and become a component of the repeater. For example, the controller 608 may be integrated into the repeater 604 and become a component of the repeater 604, and the controller 708 may be integrated into the repeater 704 and become a component of the repeater 704. The repeater may be configured to amplify a signal received from the BS and send the amplified signal to the UE. The UE may be Fig.12 UE 104, 350, 406, 562, 564, 606, 706 or device 1204 in a hardware specific implementation of.

[0112] At 1004, the network node may send, for the wireless device, an indication of a power adjustment between sets of resource allocations from a first time instant to a second time instant. Figure 6 Various aspects of a network node sending a signal to a repeater are illustrated. Figure 6 As shown, in one configuration, a network node (e.g., base station 602) may transmit a signal to a wireless device (e.g., repeater 604) via a backhaul channel 612. The repeater 604 may be configured to amplify the signal and transmit the amplified signal to the UE 606. Figure 7 Various aspects of the network node sending an indication of power adjustment between resource allocation sets from a first time to a second time are illustrated. For example, at 718, the base station 702 may send an indication of power adjustment between resource allocation sets from a first time to a second time to the controller 708.

[0113] In some aspects, the power adjustment may be associated with adjustment of a power BO of the wireless device.

[0114] In some aspects, the wireless communication between the network node and the UE may be a multi-hop communication including multiple hops, and the adjustment of the power BO of the wireless device may correspond to an adjustment of the maximum transmit power of the PA at the wireless device or the signal power level of the PA at the wireless device based on the position of the wireless device in the multiple hops.

[0115] In some aspects, if the wireless device is not at the last hop of the plurality of hops, the adjustment of the power BO of the wireless device may correspond to an adjustment to the maximum transmit power of the PA at the wireless device.

[0116] In some aspects, if the wireless device is at a last hop of the multiple hops, the adjustment of the power BO of the wireless device may correspond to an adjustment to the signal power level of the PA at the wireless device.

[0117] In some aspects, the power BO of a wireless device may correspond to a ratio between a maximum transmit power of a PA at the wireless device and a signal power level of the PA of the wireless device.

[0118] In some aspects, the network node and the UE may communicate via multiple wireless devices. In this case, steps 1002 and 1004 may be performed for each of the multiple wireless devices. That is, the method may further include: measuring a corresponding power adjustment between corresponding resource allocation sets from a first time to a second time for each corresponding wireless device in the multiple wireless devices, wherein each of the multiple wireless devices corresponds to a hop in a plurality of hops, and wherein the resource allocation set is associated with wireless communication between the network node and the UE via the corresponding wireless device; and sending an indication of the corresponding power adjustment between the resource allocation sets from the first time to the second time to each of the multiple wireless devices.

[0119] In some aspects, the adjustment to the maximum transmit power of the PA may correspond to a first adjustment to the power consumption of the wireless device, and the adjustment to the signal power level of the PA may correspond to a second adjustment to the link budget of the access channel or the backhaul channel.

[0120] In some aspects, the set of resource allocations may be a contiguous set of resource allocations or a non-contiguous set of resource allocations, and the power adjustment may be a power difference between the set of resource allocations at a first time and the set of resource allocations at a second time.

[0121] In some aspects, the resource allocation set may be a set of time slots or a set of symbols. The power adjustment may be associated with: (1) a change in power of the set of time slots or the set of symbols from a first time instant to a second time instant; and (2) a number of time slots or symbols to which the power adjustment is applied.

[0122] In some aspects, sending an indication of a power adjustment between sets of resource allocations from a first time instant to a second time instant may include sending an indication of a power adjustment between sets of resource allocations from the first time instant to the second time instant one slot or symbol prior to the second time instant.

[0123] In some aspects, the wireless device may be at least one repeater, at least one relay device, or at least one controller.

[0124] In some aspects, the indication may be sent via PDCCH or MAC-CE.

[0125] Fig.111 is a flowchart 1100 illustrating a method of wireless communication at a network node according to various aspects of the present disclosure. The method may be performed by a network node. The network node may be Figure 1 A base station 102 or a component of a base station in an access network of Fig.12 In the flowchart 1100, steps 1102 and 1108 are respectively the same as steps 1002 and 1004 in the flowchart 1000. For details of these steps, reference may be made to the relevant description in conjunction with the flowchart 1000. For the sake of brevity, these steps are not repeatedly introduced here. Fig.11 As shown, at 1104, the network node may receive a capability indication before sending an indication of power adjustment. The capability indication may indicate the ability of the wireless device to adjust the power BO of the wireless device. For example, at 714, the network node (base station 702) may receive a capability indication before sending an indication of power adjustment. The capability indication may indicate the ability of the wireless device (combination of repeater 704 and controller 708) to adjust its power BO.

[0126] At 1106, the network node may determine whether the wireless device has the ability to adjust the power BO based on the capability indication. For example, at 716, the network node (base station 702) may determine whether the wireless device (combination of repeater 704 and controller 708) has the ability to adjust its power BO based on the capability indication. Then, at 1108, if it is determined that the wireless device has the ability to adjust the power BO, the network node will send an indication of power adjustment. For example, at 718, if the network node determines that the wireless device has the ability to adjust the power BO, the network node (base station 702) may send an indication of power adjustment to the wireless device.

[0127] Fig.121200 is a diagram illustrating an example of a hardware implementation for an apparatus 1204. The apparatus 1204 may be a UE, a component of a UE, or may implement UE functionality. In some aspects, the apparatus 1204 may include a cellular baseband processor 1224 (also referred to as a modem) coupled to one or more transceivers 1222 (e.g., a cellular RF transceiver). The cellular baseband processor 1224 may include on-chip memory 1224'. In some aspects, the apparatus 1204 may also include one or more subscriber identity module (SIM) cards 1220 and an application processor 1206 coupled to a secure digital (SD) card 1208 and a screen 1210. The application processor 1206 may include on-chip memory 1206'. In some aspects, the device 1204 may also include a Bluetooth module 1212, a WLAN module 1214, an SPS module 1216 (e.g., a GNSS module), one or more sensor modules 1218 (e.g., an atmospheric pressure sensor / altimeter; a motion sensor such as an inertial measurement unit (IMU), a gyroscope, and / or an accelerometer; light detection and ranging (LIDAR), radio-aided detection and ranging (RADAR), sound navigation and ranging (SONAR), a magnetometer, audio, and / or other technologies for positioning), an additional memory module 1226, a power source 1230, and / or a camera 1232. The Bluetooth module 1212, the WLAN module 1214, and the SPS module 1216 may include an on-chip transceiver (TRX) (or in some cases, only a receiver (RX)). The Bluetooth module 1212, the WLAN module 1214, and the SPS module 1216 may include their own dedicated antennas and / or communicate using an antenna 1280. The cellular baseband processor 1224 communicates with the UE 104 and / or with the RU associated with the network entity 1202 through the transceiver 1222 via one or more antennas 1280. The cellular baseband processor 1224 and the application processor 1206 may each include a computer-readable medium / memory 1224', 1206', respectively. The additional memory module 1226 may also be considered a computer-readable medium / memory. Each computer-readable medium / memory 1224', 1206', 1226 may be non-transitory. The cellular baseband processor 1224 and the application processor 1206 are each responsible for general processing, including executing software stored on a computer-readable medium / memory. The software, when executed by the cellular baseband processor 1224 / application processor 1206, enables the cellular baseband processor 1224 / application processor 1206 to perform the various functions described above. The computer-readable medium / memory may also be used to store data manipulated by the cellular baseband processor 1224 / application processor 1206 when executing the software.The cellular baseband processor 1224 / application processor 1206 may be a component of the UE 350 and may include the memory 360 and / or at least one of the TX processor 368, the RX processor 356, and the controller / processor 359. In one configuration, the device 1204 may be a processor chip (modem and / or application) and include only the cellular baseband processor 1224 and / or the application processor 1206, and in another configuration, the device 1204 may be the entire UE (e.g., see. Figure 3 350) and includes additional modules of device 1204.

[0128] Fig.131300 is a diagram illustrating an example of a hardware implementation for a network entity 1302. The network entity 1302 may be a BS, a component of a BS, or may implement BS functionality. The network entity 1302 may include at least one of a CU 1310, a DU 1330, or a RU 1340. For example, depending on the layer functionality handled by the component 199, the network entity 1302 may include a CU 1310; both a CU 1310 and a DU 1330; each of the CU 1310, the DU 1330, and the RU 1340; the DU 1330; both a DU 1330 and a RU 1340; or a RU 1340. The CU 1310 may include a CU processor 1312. The CU processor 1312 may include an on-chip memory 1312'. In some aspects, the CU 1310 may also include an additional memory module 1314 and a communication interface 1318. CU 1310 communicates with DU 1330 via a midhaul link, such as an F1 interface. DU 1330 may include a DU processor 1332. DU processor 1332 may include on-chip memory 1332'. In some aspects, DU 1330 may also include additional memory modules 1334 and a communication interface 1338. DU 1330 communicates with RU 1340 via a fronthaul link. RU 1340 may include a RU processor 1342. RU processor 1342 may include on-chip memory 1342'. In some aspects, RU 1340 may also include additional memory modules 1344, one or more transceivers 1346, antenna 1380, and communication interface 1348. RU 1340 communicates with UE 104. On-chip memory 1312', 1332', 1342' and additional memory modules 1314, 1334, 1344 may each be considered a computer-readable medium / memory. Each computer readable medium / memory may be non-transitory. Each of processors 1312, 1332, 1342 is responsible for general processing, including executing software stored on the computer readable medium / memory. The software, when executed by the corresponding processor, causes the processor to perform the various functions described above. The computer readable medium / memory may also be used to store data manipulated by the processor when executing the software.

[0129] As discussed above, component 199 is configured to measure, for a wireless device, a power adjustment between resource allocation sets from a first time to a second time, wherein the resource allocation sets are associated with wireless communication between a network node and a UE via the wireless device; and send, for the wireless device, an indication of the power adjustment between the resource allocation sets from the first time to the second time. Component 199 may further be configured to perform in conjunction with Fig.10 and Fig.11 Aspects described by flowcharts of, and / or by Figure 7Any of the aspects performed by the base station in. Component 199 may be within one or more processors of one or more of CU 1310, DU 1330, and RU 1340. Component 199 may be one or more hardware components specifically configured to execute the process / algorithm, implemented by one or more processors configured to execute the process / algorithm, stored in a computer-readable medium for implementation by one or more processors, or some combination thereof. Network entity 1302 may include a variety of components configured for various functions. In one configuration, network entity 1302 includes: a component for measuring a power adjustment between a resource allocation set from a first moment to a second moment for a wireless device, wherein the resource allocation set is associated with wireless communication between a network node and a UE via the wireless device; and a component for sending an indication of a power adjustment between a resource allocation set from a first moment to a second moment for a wireless device. The network entity may also include a component for performing a combined Fig.10 and Fig.11 Aspects described by flowcharts of, and / or by Figure 7 A means for performing any of the aspects of the base station in the network entity 1302. A means may be a component 199 of the network entity 1302 configured to perform the functions recited by the means. As described above, the network entity 1302 may include a TX processor 316, an RX processor 370, and a controller / processor 375. Thus, in one configuration, a means may be a TX processor 316, an RX processor 370, and / or a controller / processor 375 configured to perform the functions recited by the means.

[0130] Fig.14 1400 is a diagram illustrating an example of a hardware implementation for a network entity 1460. In one example, the network entity 1460 may be within a relay 197 (in Figure 3 ). The network entity 1460 may include a repeater processor 1412. The repeater processor 1412 may include an on-chip memory 1412'. In some aspects, the network entity 1460 may also include an additional memory module 1414. The network entity 1460 communicates with the CU 1402 directly (e.g., a backhaul link) or indirectly (e.g., through the RIC) via a network interface 1480. The on-chip memory 1412' and the additional memory module 1414 may each be considered to be a computer-readable medium / memory. Each computer-readable medium / memory may be non-transitory. The processor 1412 is responsible for general processing, including executing software stored on a computer-readable medium / memory. The software, when executed by the corresponding processor, causes the processor to perform the various functions described above. The computer-readable medium / memory may also be used to store data manipulated by the processor when executing the software.

[0131] As discussed above, component 198 is configured to receive an indication of a power adjustment between resource allocation sets from a first time to a second time, wherein the resource allocation sets are associated with wireless communication between a network node and a UE via a wireless device; and adjust the power BO of the wireless device based on the indication of the power adjustment between the resource allocation sets. Component 198 may further be configured to perform in conjunction with Figure 8 and Fig. 9 Aspects described by flowcharts of, and / or by Figure 7 Any of the aspects performed by the relay in. Component 198 may be within processor 1412. Component 198 may be one or more hardware components specifically configured to perform the process / algorithm, implemented by one or more processors configured to perform the process / algorithm, stored in a computer-readable medium for implementation by one or more processors, or some combination thereof. Network entity 1460 may include a variety of components configured for various functions. In one configuration, network entity 1460 includes a component for receiving an indication of a power adjustment between resource allocation sets from a first moment to a second moment, wherein the resource allocation sets are associated with wireless communication between a network node and a UE via a wireless device; and a component for adjusting the power BO of the wireless device based on the indication of the power adjustment between the resource allocation sets. The network entity may also include a component for performing a combination Figure 8 and Fig. 9 Aspects described by flowcharts of, and / or by Figure 7 A means for performing any of the aspects of the relay in the network entity 1460. A means may be a component 198 of the network entity 1460 configured to perform the functions recited by the means.

[0132] The present disclosure provides a method for power adjustment signaling for one or more relays. The method may include receiving an indication of a power adjustment between resource allocation sets from a first moment to a second moment, wherein the resource allocation set is associated with wireless communication between a network node and a UE via a wireless device; and adjusting the power BO of the wireless device based on the indication of the power adjustment between the resource allocation sets. The method provides power adjustment signaling to the wireless device so that the power BO of the wireless device can be dynamically adjusted based on the resource allocation of the incoming signal. Therefore, the method improves the energy efficiency of the wireless device.

[0133] It should be understood that the specific order or hierarchy of the blocks in the disclosed process / flowchart is merely an illustration of the exemplary method. It should be understood that the specific order or hierarchy of the blocks in the process / flowchart may be rearranged based on design preferences. Further, some blocks may be combined or omitted. The attached method claims provide the elements of the various blocks in a sample order, but are not limited to the specific order or hierarchy provided.

[0134] The foregoing description is provided to enable any person skilled in the art to practice the various aspects described herein. Various modifications to these aspects will be apparent to those skilled in the art, and the general principles defined herein can be applied to other aspects. Therefore, the claims are not limited to the various aspects described herein, but should be given the full scope consistent with the language claims. Unless otherwise specified, reference to an element in the singular form does not mean "one and only one", but "one or more". Terms such as "if", "when" and "while" do not mean a direct temporal relationship or reaction. That is, these phrases, such as "when ......", do not mean an immediate action in response to the occurrence of an action or during the occurrence of an action, but simply imply that if the conditions are met, the action will occur, but no specific or immediate time limit is required for the occurrence of the action. The word "exemplary" is used herein to mean "used as an example, instance, or illustration". Any aspect described as "exemplary" herein is not necessarily interpreted as being preferred or having advantages over other aspects. Unless otherwise specified, the term "some" refers to one or more. Combinations such as "at least one of A, B, or C", "one or more of A, B, or C", "at least one of A, B and C", "one or more of A, B, and C", and "A, B, C, or any combination thereof" include any combination of A, B, and / or C, which may include multiple A, multiple B, or multiple C. Specifically, combinations such as "at least one of A, B, or C", "one or more of A, B, or C", "at least one of A, B, and C", "one or more of A, B, and C", and "A, B, C, or any combination thereof" may be only A, only B, only C, A and B, A and C, B and C, or A and B and C, where any such combination may contain one or more members of A, B, or C. A set should be interpreted as a set of elements, where the number of elements is one or more. Thus, for a set of X, X will include one or more elements. If the first device receives data from the second device or sends data to the second device, the data may be received / sent directly between the first device and the second device, or indirectly between the first device and the second device through a collection of devices. All structural and functional equivalents of the elements of the various aspects described throughout the present disclosure that are known or will later be known to a person of ordinary skill in the art are expressly incorporated herein by reference and are covered by the claims. In addition, nothing disclosed herein is intended to be dedicated to the public, regardless of whether such disclosure is explicitly stated in the claims. Words such as "module", "mechanism", "element", "device", etc. cannot replace the word "component". Therefore, no claim element will be understood as a component plus function unless the element is explicitly stated using the phrase "component for..."

[0135] As used herein, the phrase "based on" should not be interpreted as referring to a closed set of information, one or more conditions, one or more factors, etc. In other words, the phrase "based on A" (where "A" can be information, a condition, a factor, etc.) should be interpreted as "based at least on A" unless specifically stated differently.

[0136] The following aspects are merely illustrative and may be combined with other aspects or teachings described herein without limitation.

[0137] Aspect 1 is a method for performing wireless communications at a wireless device, comprising: receiving an indication of a power adjustment between a resource allocation set from a first moment to a second moment, wherein the resource allocation set is associated with wireless communications between a network node and a UE via the wireless device; and adjusting a power BO of the wireless device based on the indication of the power adjustment between the resource allocation sets.

[0138] Aspect 2 is a method according to Aspect 1, wherein the wireless communication between the network node and the UE is a multi-hop communication including multiple hops, and wherein adjusting the power BO of the wireless device includes: adjusting the maximum transmission power of the PA at the wireless device or the signal power level of the PA at the wireless device based on the position of the wireless device in the multiple hops.

[0139] Aspect 3 is a method according to aspect 2, wherein adjusting the power BO of the wireless device includes: in response to the wireless device not being at the last hop of the plurality of hops, adjusting the maximum transmit power of the PA at the wireless device.

[0140] Aspect 4 is a method according to aspect 2, wherein adjusting the power BO of the wireless device comprises: in response to the wireless device being at the last hop of the plurality of hops, adjusting the signal power level of the PA at the wireless device.

[0141] Aspect 5 is a method according to Aspect 2, wherein adjusting the maximum transmit power of the PA corresponds to a first adjustment to the power consumption of the wireless device, and wherein adjusting the signal power level of the PA corresponds to a second adjustment to the link budget of an access channel or a backhaul channel.

[0142] Aspect 6 is a method according to any one of Aspects 1 to 5, wherein the resource allocation set is a continuous resource allocation set or a non-continuous resource allocation set, and wherein the power adjustment is the power difference between the resource allocation set at the first moment and the resource allocation set at the second moment.

[0143] Aspect 7 is a method according to any one of Aspects 1 to 5, wherein the resource allocation set is a time slot set or a symbol set, and wherein the power adjustment is associated with the following items: (1) the power change of the time slot set or the symbol set from the first moment to the second moment; and (2) the number of time slots or symbols to which the power adjustment is applied.

[0144] Aspect 8 is a method according to Aspect 7, wherein receiving the indication of the power adjustment between the resource allocation sets from the first moment to the second moment includes: receiving the indication of the power adjustment between the resource allocation sets from the first moment to the second moment at a time slot or a symbol before the second moment.

[0145] Aspect 9 is a method according to any one of Aspects 1 to 8, wherein the method further comprises: sending a capability indication to the network node before receiving the indication of the power adjustment, wherein the capability indication indicates the capability of the wireless device to adjust the power BO of the wireless device.

[0146] Aspect 10 is a method according to any one of Aspects 1 to 9, wherein the indication of the power adjustment is a first indication of the power adjustment, the network node is a first network node associated with multiple network nodes, and the method also includes: receiving a second indication of the power adjustment between a second resource allocation set from the first moment to the second moment, wherein the second resource allocation set is associated with a second wireless communication between a second network node and the wireless device, and wherein adjusting the power BO of the wireless device includes: adjusting the power BO of the wireless device based on the first indication and the second indication.

[0147] Aspect 11 is a method according to any one of aspects 1 to 10, wherein the indication is received from the network node, and the wireless device is at least one relay, at least one relay device, or at least one controller.

[0148] Aspect 12 is a method according to any one of aspects 1 to 11, wherein the indication is received via a PDCCH or a MAC-CE.

[0149] Aspect 13 is a method of wireless communication at a network node. The method includes: measuring, for a wireless device, a power adjustment between resource allocation sets from a first time to a second time, wherein the resource allocation sets are associated with wireless communication between the network node and a UE via the wireless device; and sending, for the wireless device, an indication of the power adjustment between the resource allocation sets from the first time to the second time.

[0150] Aspect 14 is a method according to aspect 13, wherein the power adjustment is associated with an adjustment of the power BO of the wireless device.

[0151] Aspect 15 is a method according to aspect 13, wherein the wireless communication between the network node and the UE is a multi-hop communication including multiple hops, and wherein the adjustment of the power BO of the wireless device corresponds to an adjustment of the maximum transmit power of the PA at the wireless device or the signal power level of the PA at the wireless device based on the position of the wireless device in the multiple hops.

[0152] Aspect 16 is a method according to aspect 15, wherein if the wireless device is not at the last hop of the plurality of hops, the adjustment of the power BO of the wireless device corresponds to an adjustment of the maximum transmit power of the PA at the wireless device.

[0153] Aspect 17 is a method according to aspect 15, wherein if the wireless device is at a last hop of the plurality of hops, the adjustment of the power BO of the wireless device corresponds to an adjustment of the signal power level of the PA at the wireless device.

[0154] Aspect 18 is a method according to aspect 15, wherein the power BO of the wireless device corresponds to a ratio between the maximum transmit power of the PA at the wireless device and the signal power level of the PA of the wireless device.

[0155] Aspect 19 is a method according to Aspect 15, wherein the method further includes: measuring a corresponding power adjustment between corresponding resource allocation sets from the first moment to the second moment for each corresponding wireless device among a plurality of wireless devices, wherein each of the plurality of wireless devices corresponds to a hop among the plurality of hops, and wherein the resource allocation set is associated with wireless communication between the network node and the UE via the corresponding wireless device; and sending an indication of the corresponding power adjustment between the resource allocation sets from the first moment to the second moment to each wireless device among the plurality of wireless devices.

[0156] Aspect 20 is a method according to Aspect 15, wherein the adjustment of the maximum transmit power of the PA corresponds to a first adjustment of the power consumption of the wireless device, and wherein the adjustment of the signal power level of the PA corresponds to a second adjustment of the link budget of an access channel or a backhaul channel.

[0157] Aspect 21 is a method according to any one of Aspects 13 to 20, wherein the resource allocation set is a continuous resource allocation set or a non-continuous resource allocation set, and wherein the power adjustment is the power difference between the resource allocation set at the first moment and the resource allocation set at the second moment.

[0158] Aspect 22 is a method according to any one of Aspects 13 to 20, wherein the resource allocation set is a time slot set or a symbol set, and wherein the power adjustment is associated with the following items: (1) the power change of the time slot set or the symbol set from the first moment to the second moment; and (2) the number of time slots or symbols to which the power adjustment is applied.

[0159] Aspect 23 is a method according to Aspect 22, wherein sending the indication of the power adjustment between the resource allocation sets from the first moment to the second moment includes: sending the indication of the power adjustment between the resource allocation sets from the first moment to the second moment at a time slot or symbol before the second moment.

[0160] Aspect 24 is a method according to any one of aspects 13 to 23, wherein the method further comprises: receiving a capability indication before sending the indication of the power adjustment, wherein the capability indication indicates the capability of the wireless device to adjust the power BO of the wireless device.

[0161] Aspect 25 is a method according to Aspect 24, wherein sending the indication of the power adjustment between the resource allocation sets from the first moment to the second moment includes: sending the indication of the power adjustment in response to the capability indication indicating that the wireless device has the ability to adjust the power BO.

[0162] Aspect 26 is a method according to any one of aspects 13 to 25, wherein the wireless device is at least one repeater, at least one relay device, or at least one controller.

[0163] Aspect 27 is a method according to any one of aspects 13 to 26, wherein the indication is sent via PDCCH or MAC-CE.

[0164] Aspect 28 is an apparatus for performing wireless communications at a wireless device, comprising: a memory; and at least one processor, the at least one processor being coupled to the memory and being configured to perform a method according to any one of Aspects 1 to 12 based at least in part on information stored in the memory.

[0165] Aspect 29 is the apparatus of aspect 28, further comprising: at least one of a transceiver or an antenna coupled to the at least one processor.

[0166] Aspect 30 is an apparatus for wireless communication, comprising means for performing a method according to any one of aspects 1 to 12.

[0167] Aspect 31 is a computer-readable medium (eg, a non-transitory computer-readable medium) storing computer-executable code, wherein the code, when executed by a processor, causes the processor to implement the method according to any one of aspects 1 to 12.

[0168] Aspect 32 is an apparatus for wireless communication at a network node, comprising: a memory; and at least one processor, the at least one processor being coupled to the memory and being configured to perform a method according to any one of Aspects 13 to 27 based at least in part on information stored in the memory.

[0169] Aspect 33 is the apparatus of aspect 32, further comprising: at least one of a transceiver or an antenna coupled to the at least one processor.

[0170] Aspect 34 is an apparatus for wireless communication, comprising means for performing a method according to any one of aspects 13 to 27.

[0171] Aspect 35 is a computer-readable medium (eg, a non-transitory computer-readable medium) storing computer-executable code, wherein the code, when executed by a processor, causes the processor to implement a method according to any one of aspects 13 to 27.

Claims

1. An apparatus for wireless communication at a wireless device, the apparatus comprising: Memory; and at least one processor coupled to the memory and based at least in part on the information stored in the memory, the at least one processor configured to: receiving an indication of a power adjustment between a set of resource allocations from a first time to a second time, wherein the set of resource allocations is associated with a first wireless communication between a network node and a user equipment (UE) via the wireless device; and A power backoff (BO) of the wireless device is adjusted based on the indication of the power adjustment between the sets of resource allocations.

2. The apparatus of claim 1 , wherein the first wireless communication between the network node and the UE is a multi-hop communication comprising a plurality of hops, and wherein in order to adjust the power BO of the wireless device, the at least one processor is configured to: A maximum transmit power of a power amplifier (PA) at the wireless device or a signal power level of the PA at the wireless device is adjusted based on the location of the wireless device in the plurality of hops.

3. The apparatus of claim 2, wherein to adjust the power BO of the wireless device, the at least one processor is configured to: In response to the wireless device not being at a last hop of the plurality of hops, adjusting the maximum transmit power of the PA at the wireless device.

4. The apparatus of claim 2, wherein to adjust the power BO of the wireless device, the at least one processor is configured to: In response to the wireless device being at a last hop of the plurality of hops, the signal power level of the PA at the wireless device is adjusted.

5. The apparatus of claim 2, wherein adjusting the maximum transmit power of the PA corresponds to a first adjustment to power consumption of the wireless device, and wherein adjusting the signal power level of the PA corresponds to a second adjustment to a link budget of an access channel or a backhaul channel.

6. The apparatus of claim 1, wherein the resource allocation set is a contiguous resource allocation set or a non-contiguous resource allocation set, and wherein the power adjustment is a power difference between the resource allocation set at the first time instant and the resource allocation set at the second time instant.

7. The apparatus of claim 1 , wherein the set of resource allocations is a set of time slots or a set of symbols, and wherein the power adjustment is associated with: (1) power variation of the time slot set or the symbol set from the first time instant to the second time instant; and (2) The number of time slots or symbols to which the power adjustment is applied.

8. The apparatus of claim 7, wherein to receive the indication of the power adjustment between the sets of resource allocations from the first time instant to the second time instant, the at least one processor is configured to: The indication of the power adjustment between the sets of resource allocations from the first time instant to the second time instant is received one time slot or one symbol before the second time instant.

9. The apparatus of claim 1 , wherein the at least one processor is further configured to: A capability indication is sent to the network node prior to receiving the indication of the power adjustment, wherein the capability indication indicates a capability of the wireless device to adjust the power BO of the wireless device.

10. The apparatus of claim 1, wherein the indication of the power adjustment is a first indication of the power adjustment, the network node is a first network node associated with a plurality of network nodes, and wherein the at least one processor is further configured to: receiving a second indication of the power adjustment between a second set of resource allocations from the first time instant to the second time instant, wherein the second set of resource allocations is associated with a second wireless communication between a second network node and the wireless device, and wherein to adjust the power BO of the wireless device, the at least one processor is configured to: The power BO of the wireless device is adjusted based on the first indication and the second indication.

11. The apparatus of claim 1, wherein the indication is received from the network node and the wireless device is at least one relay, at least one relay device, or at least one controller.

12. The apparatus of claim 1 , further comprising at least one of a transceiver or an antenna coupled to the at least one processor, wherein the transceiver or at least one of the antenna is configured to receive the indication via a physical downlink control channel (PDCCH) or a medium access control (MAC) control element (MAC-CE).

13. An apparatus for wireless communication at a network node, the apparatus comprising: Memory; and at least one processor coupled to the memory and based at least in part on the information stored in the memory, the at least one processor configured to: measuring, for a wireless device, a power adjustment between a set of resource allocations from a first time to a second time, wherein the set of resource allocations is associated with a first wireless communication between the network node and a user equipment (UE) via the wireless device; as well as An indication of the power adjustment between the sets of resource allocations from the first time instant to the second time instant is sent to the wireless device.

14. The apparatus of claim 13, wherein the power adjustment is associated with an adjustment of a power backoff (BO) of the wireless device.

15. The apparatus of claim 14, wherein the first wireless communication between the network node and the UE is a multi-hop communication comprising a plurality of hops, and wherein the adjustment of the power BO of the wireless device corresponds to: An adjustment is made to a maximum transmit power of a power amplifier (PA) at the wireless device or a signal power level of the PA at the wireless device based on the location of the wireless device in the plurality of hops.

16. The apparatus of claim 15, wherein if the wireless device is not at a last hop of the plurality of hops, the adjustment of the power BO of the wireless device corresponds to: The adjustment to the maximum transmit power of the PA at the wireless device.

17. The apparatus of claim 15, wherein if the wireless device is at a last hop of the plurality of hops, the adjustment of the power BO of the wireless device corresponds to: An adjustment to the signal power level of the PA at the wireless device.

18. The apparatus of claim 15, wherein the power BO of the wireless device corresponds to a ratio between the maximum transmit power of the PA at the wireless device and the signal power level of the PA of the wireless device.

19. The apparatus of claim 15, wherein the at least one processor is further configured to: measuring, for each corresponding wireless device in a plurality of wireless devices, a corresponding power adjustment between a corresponding set of resource allocations from the first time to the second time, wherein each of the plurality of wireless devices corresponds to a hop in the plurality of hops, and wherein the set of resource allocations is associated with the first wireless communication between the network node and the UE via the corresponding wireless device; and A second indication of the corresponding power adjustment between the sets of resource allocations from the first time to the second time is sent to each of the plurality of wireless devices.

20. The apparatus of claim 15, wherein the adjustment to the maximum transmit power of the PA corresponds to a first adjustment to power consumption of the wireless device, and wherein the adjustment to the signal power level of the PA corresponds to a second adjustment to a link budget of an access channel or a backhaul channel.

21. The apparatus of claim 13, wherein the resource allocation set is a contiguous resource allocation set or a non-contiguous resource allocation set, and wherein the power adjustment is a power difference between the resource allocation set at the first time instant and the resource allocation set at the second time instant.

22. The apparatus of claim 13, wherein the set of resource allocations is a set of time slots or a set of symbols, and wherein the power adjustment is associated with: (1) power variation of the time slot set or the symbol set from the first time instant to the second time instant; and (2) The number of time slots or symbols to which the power adjustment is applied.

23. The apparatus of claim 22, wherein to send the indication of the power adjustment between the sets of resource allocations from the first time instant to the second time instant, the at least one processor is configured to: The indication of the power adjustment between the sets of resource allocations from the first time instant to the second time instant is sent one time slot or symbol before the second time instant.

24. The apparatus of claim 13, wherein the at least one processor is further configured to: A capability indication is received prior to sending the indication of the power adjustment, wherein the capability indication indicates a capability of the wireless device to adjust a power BO of the wireless device.

25. The apparatus of claim 24, wherein to send the indication of the power adjustment between the sets of resource allocations from the first time instant to the second time instant, the at least one processor is further configured to: The indication of the power adjustment is sent in response to the capability indication indicating that the wireless device has the capability to adjust the power BO.

26. The apparatus of claim 13, wherein the wireless device is at least one repeater, at least one relay device, or at least one controller.

27. The apparatus of claim 13, further comprising at least one of a transceiver or an antenna coupled to the at least one processor, wherein the transceiver or at least one of the antenna is configured to send the indication via a physical downlink control channel (PDCCH) or a medium access control (MAC) control element (MAC-CE).

28. A method of wireless communication at a wireless device, the method comprising: receiving an indication of a power adjustment between a set of resource allocations from a first time to a second time, wherein the set of resource allocations is associated with a first wireless communication between a network node and a user equipment (UE) via the wireless device; and A power backoff (BO) of the wireless device is adjusted based on the indication of the power adjustment between the sets of resource allocations.

29. The method of claim 28, wherein the first wireless communication between the network node and the UE is a multi-hop communication comprising a plurality of hops, and wherein adjusting the power BO of the wireless device comprises: A maximum transmit power of a power amplifier (PA) at the wireless device or a signal power level of the PA at the wireless device is adjusted based on the location of the wireless device in the plurality of hops.

30. A method for wireless communication at a network node, the method comprising: measuring, for a wireless device, a power adjustment between a set of resource allocations from a first time to a second time, wherein the set of resource allocations is associated with a first wireless communication between the network node and a user equipment (UE) via the wireless device; as well as An indication of the power adjustment between the sets of resource allocations from the first time instant to the second time instant is sent to the wireless device.

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