Programmable intelligent repeater with in-band control

Abstract

Apparatuses, methods, and computer-readable media are disclosed herein for facilitating programmable intelligent repeaters with in-band control. An example method for wireless communication at a repeater includes establishing a control link with a control node and receiving, via the control link, a configuration of one or more parameters of the repeater to forward communications between a first wireless device and a second wireless device. The example method further includes transitioning an MT component of the repeater to a power saving mode for at least a time period after receiving the configuration and forwarding the communications between the first wireless device and the second wireless device based on the one or more parameters in the configuration. The disclosed techniques can enable control signaling reduction between a control node and a repeater to provide power saving of an MT of the repeater and lower signal overhead of the control node.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims the benefit of and priority to U.S. Provisional Application No. 63 / 085,998, filed on September 30, 2020, entitled “PROGRAMMABLE SMART REPEATER WITHIN-BAND CONTROL,” and U.S. Patent Application No. 17 / 468,010, filed on September 7, 2021, entitled “PROGRAMMABLE SMART REPEATER WITH IN-BAND CONTROL,” both of which are expressly incorporated herein by reference in their entirety. Technical Field

[0003] The present disclosure relates generally to communication systems and, more particularly, to using analog repeaters for wireless communications.

[0004] introduction

[0005] Wireless communication systems are widely deployed to provide a variety of telecommunication services, such as telephony, video, data, messaging, and broadcasts. Typical wireless communication systems 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), time division multiple access (TDMA), frequency division multiple access (FDMA), orthogonal frequency division multiple access (OFDMA), single-carrier frequency division multiple access (SC-FDMA), and time division synchronous code division multiple access (TD-SCDMA).

[0006] These multiple access technologies have been adopted in various telecommunication standards to provide a common protocol that enables different wireless devices to communicate at a city, country, region, and even global level. An example telecommunication standard is 5G New Radio (NR). 5G NR 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 communications (mMTC), and ultra-reliable low latency communications (URLLC). Some aspects of 5G NR may be based on the 4G Long Term Evolution (LTE) standard. There is a need for further improvements to 5G NR technology. These improvements may also be applicable to other multiple access technologies and telecommunication standards that employ these technologies.

[0007] Brief Overview

[0008] The following presents a simplified summary of one or more aspects in order to provide a basic understanding of such aspects. This summary is not an extensive overview of all contemplated aspects, and is intended to neither identify key or critical elements of all aspects nor delineate 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 the more detailed description that is presented later.

[0009] In one aspect of the disclosure, a method, a computer-readable medium, and an apparatus for wireless communication at a relay are provided. An example apparatus can establish a control link with a control node. The example apparatus can also receive, via the control link, a configuration of one or more parameters of the relay to forward communications between a first wireless device and a second wireless device. Additionally, the example apparatus can transition a mobile termination (MT) component of the relay to a power saving mode for at least a time period after receiving the configuration. The example apparatus can also forward the communications between the first wireless device and the second wireless device based on the one or more parameters in the configuration.

[0010] In another aspect of the disclosure, a method, a computer-readable medium, and an apparatus for wireless communication at a control node are provided. An example apparatus can establish a control link with a relay. The example apparatus can also transmit, via the control link, a configuration of one or more parameters of the relay to forward communications between a first wireless device and a second wireless device. Additionally, the example apparatus can transmit an indication to the relay to enter a power saving mode for an MT component.

[0011] To the accomplishment of the foregoing and related ends, the one or more aspects comprise the features hereinafter fully described and particularly pointed out in the claims. The following description and the annexed drawings set forth in detail certain illustrative features of the one or more aspects. These features are indicative, however, of but a few of the various ways in which the principles of various aspects can be employed, and this description is intended to include all such aspects and their equivalents. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 is a diagram illustrating an example of a wireless communications system and an access network.

[0014] Figure 2A is a diagram illustrating an example of a first frame, in accordance with aspects of the present disclosure.

[0015] Figure 2B is a diagram illustrating an example of DL channels within a subframe, in accordance with aspects of the present disclosure.

[0016] Figure 2C is a diagram illustrating an example of a second frame, in accordance with aspects of the present disclosure.

[0017] Figure 2D is a diagram illustrating an example of a UL channel within a subframe, in accordance with various aspects of the present disclosure.

[0018] Figure 3 is a diagram illustrating an example of a base station and user equipment (UE) in an access network.

[0019] Figure 4 illustrates an example communication flow between a first wireless device and a second wireless device through a relay device within a communication system, in accordance with various aspects of the present disclosure.

[0020] Figure 5 is a block diagram of a communication system including a base station (e.g., gNB), a UE, and a relay, which can include a repetition unit and a mobile termination, in accordance with various aspects of the present disclosure.

[0021] Figure 6 is a diagram of a relay including a repetition unit (RU) and a mobile termination (MT) component, in accordance with various aspects of the present disclosure.

[0022] Figure 7 illustrates an example communication flow between a base station and a UE through a relay, in accordance with the teachings disclosed herein.

[0023] Figure 8 illustrates an example communication flow between a control node and a relay, in accordance with the teachings disclosed herein.

[0024] Figure 9 is a flow diagram of a method of wireless communication at a relay, in accordance with the teachings disclosed herein.

[0025] Figure 10 is a flow diagram of a method of wireless communication at a relay, in accordance with the teachings disclosed herein.

[0026] Figure 11 is a diagram illustrating an example of a hardware implementation for an example apparatus, in accordance with the teachings disclosed herein.

[0027] Figure 12 is a flow diagram of a method of wireless communication at a control node, in accordance with the teachings disclosed herein.

[0028] Figure 13 is a flow diagram of a method of wireless communication at a control node, in accordance with the teachings disclosed herein.

[0029] Figure 14 is a diagram illustrating an example of a hardware implementation for an example apparatus, in accordance with the teachings disclosed herein.

[0030] DETAILED DESCRIPTION

[0031] In some cases, direct communication between the first wireless device and the second wireless device can be difficult because there is an obstruction between the devices or because the second wireless device is out of range of the first wireless device. In such scenarios, a relay device can be configured to extend coverage of the second wireless device by amplifying signals communicated between the first wireless device and the second wireless device.

[0032] In some examples, a relay can be dynamically controlled by a control node such that the configuration of the relay can be dynamically adjusted or reconfigured depending on the status of the communication system. As an example, a controller can dynamically configure a relay based on conditions experienced by one or more of the first wireless device, the second wireless device, and the relay. However, in some scenarios, dynamic control of a relay device by a control node can utilize additional power and / or signaling overhead.

[0033] Aspects disclosed herein provide techniques for improving power saving at a relay and / or reducing signaling overhead of a control node based on signaling from the control node. For example, aspects disclosed herein provide techniques that can enable dynamic control signaling reduction between a control node and a relay to provide power saving of an MT of a relay and lower signaling overhead of a control node.

[0034] The detailed description set forth below, in connection with the appended drawings and embodiments described therin, is intended as a description of various configurations and is not intended to represent the only configurations in which the concepts described herein can be practiced. The detailed description includes specific details for the purpose of providing a thorough understanding of various concepts. However, it will be apparent to those skilled in the art that these concepts can be practiced without

[0035] Several aspects of telecommunication systems will now be presented with reference to various apparatus and methods. These apparatus and methods will be 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 can be implemented using electronic hardware, computer software, or any combination thereof. Whether such elements are implemented as hardware or software depends on the specific application and design constraints imposed on the overall system.

[0036] By way of example, an element, or any portion of an element, or any combination of elements can be implemented as a "processing system" that 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 a chip (SoC), baseband processors, field programmable gate arrays (FPGAs), programmable logic devices (PLDs), state machines, gated logic, discrete hardware circuits, and other suitable hardware configured to perform the various functionality described throughout this disclosure. One or more processors in the processing system can execute software. Software shall be construed broadly to mean instructions, instruction sets, code, code segments, program code, programs, subprograms, software components, applications, software applications, software packages, routines, subroutines, objects, executables, threads of execution, procedures, functions, etc., whether referred to as software, firmware, middleware, microcode, hardware description language, or otherwise.

[0037] Accordingly, in one or more example aspects, the functions described can be implemented in hardware, software, or any combination thereof. If implemented in software, the functions can be stored on or encoded as one or more instructions or code on a computer-readable medium. Computer-readable media includes computer storage media. Storage media can be any available media that can be accessed by a computer. By way of example, and not limitation, such computer-readable media can comprise a random-access memory (RAM), a read-only memory (ROM), an electrically erasable programmable ROM (EEPROM), compact disk ROM (CD-ROM), diskette, hard disk, solid-state drive, other magnetic, optical, or other storage devices, other memory or data storage devices that can be used to non-transitorily store such computer-executable instructions or software, and / or any other medium that can be used to carry or store desired computer-executable instructions or software in the form of instructions, data structures, program code, or the like.

[0038] Although various aspects are described in this application by explaining some examples, it will be understood by those skilled in the art that additional implementations and use cases can be generated in many different arrangements and scenarios. The various aspects described herein can be implemented across many different platform types, devices, systems, shapes, sizes, and packaging arrangements. For example, each implementation and / or use can be generated via an integrated chip implementation and other devices based on non-module components (e.g., end-user devices, vehicles, communication equipment, computing equipment, industrial equipment, retail / shopping equipment, medical equipment, devices that enable artificial intelligence (AI), etc.). Although some examples may or may not be specifically for each use case or application, the wide applicability of the described aspects may occur. The scope of each implementation can range from chip-level or module components to non-module, non-chip-level implementations, and further to the aggregation, distributed or original equipment manufacturer (OEM) equipment or system that incorporates one or more aspects of the described aspects. In some actual environments, the equipment incorporating 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 several components for analog and digital purposes (e.g., hardware components including antennas, RF chains, power amplifiers, modulators, buffers, processors, interleavers, adders / summers, etc.). The aspects described herein are intended to 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, and the like.

[0039] Figure 1 1 is a diagram illustrating an example of a wireless communication system and access network 100 including base stations 102 and 180, and UE 104. The example wireless communication system (also known as a wireless wide area network (WWAN)) includes base stations 102, 180, UE 104, an evolved packet core (EPC) 160, and another core network 190 (e.g., a 5G core (5GC)). Base stations 102 may include macro cells (high-power cellular base stations) and / or small cells (low-power cellular base stations). Macro cells include base stations. Small cells include femto cells, pico cells, and micro cells.

[0040] Figure 1The wireless communications system can further include an integrated access and backhaul (IAB) node 103 and a repeater 107 that forwards communications between a first wireless device (e.g., any of base station 102, base station 180, UE 104, IAB node 103, additional repeaters, etc.) and a second wireless device 109. The second wireless device 109 can be a base station, a UE, an IAB node, an additional repeater, etc. The repeater 107 can be an analog repeater that receives, amplifies, and forwards signals between wireless devices on a communication link 120. As an example, the repeater 107 can provide additional coverage for a transmitter device that can have a signal to a receiver that is at least partially blocked by an obstruction 113. One of the wireless devices can be a control node for the repeater 107. The repeater 107 can include an MT component that receives control signaling from the control node (e.g., base station 102, base station 180, or IAB node 103) and a repeating unit (RU) that forwards communications based on the control signaling received from the control node. In some examples, the RU can be referred to as a remote unit. In some examples, the repeater can be referred to as a pass-through repeater.

[0041] As described herein, the control node can include a base station 102, base station 180, IAB node 103, etc. The first wireless device can include a base station 102, base station 180, IAB node 103, UE 104, or another repeater. The second wireless device can include a base station 102, base station 180, IAB node 103, UE 104, or another repeater.

[0042] Referring again to Figure 1 In certain aspects, the repeater 107 can include a configuration component 198 that uses a control link to (1) integrate the repeater 107 and share its capabilities, (2) define new control messages to configure RU operation, (3) define beamforming configuration, (4) establish transmit power configuration and configurable operating bandwidth, and / or (5) perform time domain resource allocation. For example, the configuration component 198 can be configured to establish a control link with a control node. The example configuration component 198 can also be configured to receive, via the control link, a configuration of one or more parameters of the repeater to forward communications between a first wireless device and a second wireless device. Additionally, the example configuration component 198 can be configured to transition an MT component of the repeater to a power saving mode for at least a time period after receiving the configuration. The example configuration component 198 can also be configured to forward the communications between the first wireless device and the second wireless device based on the one or more parameters in the configuration.

[0043] In another configuration, a control node, such as the base station 102, the base station 180, or the IAB node 103, can be configured to manage one or more aspects of wireless communications by facilitating signaling of a configuration to the repeater 107. For example, the control node can include a configuration component 199 configured to establish a control link with the repeater. The example configuration component 199 can also be configured to transmit, via the control link, a configuration of one or more parameters of the repeater to forward communications between a first wireless device and a second wireless device. Additionally, the example configuration component 199 can be configured to transmit, to the repeater, an indication for the MT component to enter a power saving mode.

[0044] Aspects presented herein can enable improved power saving at a repeater and / or reduced signaling overhead for a control node based on signaling from the control node.

[0045] Although the following description can focus on 5G NR, the concepts described herein can be applicable to other similar areas, such as LTE, LTE-A, CDMA, GSM, and other wireless technologies.

[0046] The base stations 102 configured for 4G LTE (collectively referred to as the Evolved Universal Mobile Telecommunications System (UMTS) Terrestrial Radio Access Network (E-UTRAN)) can interface with the EPC 160 through first backhaul links 132 (e.g., S I interface). The base stations 102 configured for 5G NR (collectively referred to as Next Generation RAN (NG-RAN)) can interface with the 5GC 190 through second backhaul links 184. In addition to other functions, the base stations 102 can perform one or more of the following functions: transfer of user data, radio channel ciphering and deciphering, integrity protection, header compression, mobility control functions (e.g., handover, dual connectivity), inter-cell interference coordination, connection setup and release, load balancing, distribution of paging information, NAS node selection, synchronization, radio access network (RAN) sharing, multimedia broadcast multicast service (MBMS), subscriber and equipment trace, RAN information management (RIM), paging, positioning, and delivery of warning messages. The base stations 102 can communicate directly or indirectly (e.g., through the EPC 160 or the 5GC 190) with each other over third backhaul links 134 (e.g., X2 interface). The first, second, and third backhaul links 132, 184, and 134 can be wired or wireless.

[0047] The base stations 102 can wirelessly communicate with the UEs 104. Each of the base stations 102 can provide communication coverage for a respective geographic coverage area 110. There can be overlapping geographic coverage areas 110. For example, a small cell 102' can have a coverage area 110' that overlaps with one or more macrocells 102. A network that includes both small cell and macrocells can be known as a heterogeneous network. A heterogeneous network can also include Home Evolved Node Bs (eNBs) (HeNBs), which can provide service to a restricted group known as a closed subscriber group (CSG). The communication links 120 between the base stations 102 and the UEs 104 can include uplink (UL) (also referred to as reverse link) transmissions from a UE 104 to a base station 102 and / or downlink (DL) (also referred to as forward link) transmissions from a base station 102 to a UE 104. The communication links 120 can use multiple-input and multiple-output (MIMO) antenna technology, including spatial multiplexing, beamforming, and / or transmit diversity. These communication links can be through one or more carriers, where a carrier can be a set of

[0048] Certain UEs 104 can communicate with each other using device-to-device (D2D) communication link 158. The D2D communication link 158 can use the DL / UL WWAN spectrum. The D2D communication link 158 can 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). D2D communication can be through a variety of wireless D2D communication systems, such as for example, WiMedia, Bluetooth, ZigBee, Wi-Fi based on the Institute of Electrical and Electronics Engineers (IEEE) 802.11 standard, LTE, or NR.

[0049] The wireless communications system can further include a Wi-Fi access point (AP) 150 in communication with Wi-Fi stations (STAs) 152 via communication link 154, e.g., in a 5 GHz unlicensed spectrum. When communicating in an unlicensed spectrum, the STAs 152 / AP 150 can perform a clear channel assessment (CCA) prior to communicating to determine whether the channel is available.

[0050] The small cell 102' can operate in a licensed and / or an unlicensed frequency spectrum. When operating in an unlicensed frequency spectrum, the small cell 102' can employ NR and use the same unlicensed frequency spectrum as used by the Wi-Fi AP 150 (e.g., 5 GHz, etc.). The small cell 102' employing NR in an unlicensed frequency spectrum can boost coverage and / or increase capacity for the access network.

[0051] The electromagnetic spectrum is often subdivided based on frequency / wavelength into various classes, bands, channels, etc. 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). Despite a portion of FR1 being greater than 6 GHz, FR1 is often referred to (interchangeably) as a “Sub- 6 GHz” band in various documents and articles. A similar nomenclature issue sometimes occurs with respect to FR2, which is often referred to (interchangeably) as a “millimeter wave” band in various documents and articles, despite being different from the extremely high frequency (EHF) band (30 GHz - 300 GHz) which was identified by the International Telecommunications Union (ITU) as a “millimeter wave” band.

[0052] The frequencies between FR1 and FR2 are often referred to as mid-band frequencies. Recent 5G NR studies have identified operating bands in these mid-band frequencies as frequency range designation FR3 (7. 125 GHz - 24.25 GHz). Bands falling within FR3 can inherit FR1 and / or FR2 characteristics, and as such can effectively extend the features of FR1 and / or FR2 into the mid-band frequencies. Additionally, higher operating bands are currently being explored to extend 5G NR operations beyond 52.6 GHz. For example, three higher operating bands have been identified as frequency range designations FR4a or FR4-1 (52.6 GHz - 71 GHz), FR4 (52.6 GHz - 114.25 GHz), and FR5 (114.25 GHz - 300 GHz). Each of these higher operating bands falls within the EHF band of wavelengths.

[0053] With the above considerations in mind, unless specifically stated otherwise, it should be understood that the term “sub-6 GHz” or the like, if used herein, can broadly represent frequencies that can be less than 6 GHz, can be within FR1, or can include mid-band frequencies. Further, unless specifically stated otherwise, it should be understood that the term “millimeter wave” or the like, if used herein, can broadly represent frequencies that can include mid-band frequencies, can be within FR2, FR4, FR4-a or FR4-1, and / or FR5, or can be within the EHF frequency band.

[0054] Whether small cell 102' or a large cell (e.g., macro base station), base station 102 can include and / or be referred to as an eNB, gNodeB (gNB), or another type of base station. Some base stations, such as gNB 180 can operate in a traditional sub-6 GHz spectrum, in millimeter wave frequencies, and / or near millimeter wave frequencies in communication with the UE 104. When the gNB 180 operates in millimeter wave frequencies or near millimeter wave frequencies, the gNB 180 can be referred to as a millimeter wave base station. The millimeter wave base station 180 can utilize beamforming 182 with the UE 104 to compensate for the path loss and short range. The base station 180 and the UE 104 can each include a plurality of antennas, such as antenna elements, antenna panels, and / or antenna arrays to facilitate beamforming.

[0055] The base station 180 can transmit a beamformed signal to the UE 104 in one or more transmit directions 182'. The UE 104 can receive the beamformed signal from the base station 180 in one or more receive directions 182". The UE 104 can also transmit a beamformed signal to the base station 180 in one or more transmit directions. The base station 180 can receive the beamformed signal from the UE 104 in one or more receive directions. The base station 180 / UE 104 can perform beam training to determine the best receive and transmit directions for each of the base station 180 / UE 104. The transmit and receive directions of the base station 180 can or can not be the same. The transmit and receive directions of the UE 104 can or can not be the same.

[0056] The EPC 160 can include a mobility management entity (MME) 162, other MMEs 164, a serving gateway 166, a multimedia broadcast multicast service (MBMS) gateway 168, a broadcast multicast service center (BM-SC) 170, and a packet data network (PDN) gateway 172. The MME 162 can be in communication with a home subscriber server (HSS) 174. The MME 162 is the control node that processes the signaling between the UEs 104 and the EPC 160. Generally, the MME 162 provides bearer and connection management. All user Internet protocol (IP) packets are transferred through the serving gateway 166, which itself is connected to the PDN gateway 172. The PDN gateway 172 provides UE IP address allocation as well as other functions. The PDN gateway 172 and the BM-SC 170 are connected to the IP services 176. The IP services 176 can include the Internet, an intranet, an IP multimedia subsystem (IMS), a PS streaming service, and / or other IP services. The BM-SC 170 can provide functions for MBMS user service provisioning and

[0057] The core network 190 can include an access and mobility management function (AMF) 192, other AMFs 193, a session management function (SMF) 194, and a user plane function (UPF) 195. The AMF 192 can be in communication with a unified data management (UDM) 196. The AMF 192 is the control node that processes the signaling between the UEs 104 and the core network 190. Generally, the AMF 192 provides QoS flow and session management. All user Internet protocol (IP) packets are transferred

[0058] A base station can include and / or be referred to as a gNB, Node B, 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 transceiver function, a Basic Service Set (BSS), an Extended Service Set (ESS), a Transmit Receive Point (TRP), or some other suitable terminology. A base station 102 provides wireless access to the EPC 160 or core network 190 for UEs 104. Examples of UEs 104 include a cellular phone, a smart phone, a session initiation protocol (SIP) phone, a laptop, a personal digital assistant (PDA), a satellite radio, a global positioning system, a multimedia device, a video device, a digital audio player (e.g., MP3 player), a camera, a game console, a tablet, a smart device, a wearable device, a vehicle, an electric meter, a gas pump, a large or small kitchen appliance, a health care device, an implant, a sensor / actuator, a display, or any other similar functional device. Some of the UEs 104 can be referred to as IoT devices (e.g., parking meter, gas pump, toaster, vehicle, heart monitor, etc.). The UE 104 can also be referred to as a station, a mobile station, a subscriber station, a mobile unit, a subscriber unit, a wireless unit, a remote unit, a mobile device, a wireless device, a wireless communications device, a remote device, a mobile subscriber station, an access terminal, a mobile terminal, a wireless terminal, a remote terminal, a handset, a user agent, a mobile client, a client, or some other suitable terminology. In some scenarios, the term UE can also apply to one or more companion devices, such as in a device constellation arrangement. One or more of these devices can collectively or individually access a network and / or access the network individually.

[0059] Figure 2A FIG. 200 is a diagram 200 illustrating an example of a first subframe within a 5G NR frame structure. Figure 2B FIG. 230 is a diagram 230 illustrating an example of DL channels within a 5G NR subframe. Figure 2C FIG. 250 is a diagram 250 illustrating an example of a second subframe within a 5G NR frame structure. Figure 2D FIG. 280 is a diagram 280 illustrating an example of UL channels within a 5G NR subframe. The 5G NR frame structure can be frequency-division duplexed (FDD), where for a particular subcarrier set (carrier system bandwidth), subframes of that subcarrier set are dedicated for either DL or UL; or time-division duplexed (TDD), where for a particular subcarrier set (carrier system bandwidth), subframes of that subcarrier set are dedicated for both DL and UL. This is shown in FIG. 280 for the 5G NR TDD frame structure. The 5G NR TDD frame structure can also include special subframes including a Figure 2A , 2CIn the examples provided, a 5G NR frame structure is assumed to be TDD with subframe 4 configured with slot format 28 (mostly DL) and subframe 3 configured with slot format 1 (all UL), where D is DL, U is UL, and F is flexible for use between DL / UL. While subframes 3, 4 are shown with slot formats 1, 28, respectively, any particular subframe can be configured with any of the various available slot formats 0-61. Slot formats 0, 1 are all DL, all UL, respectively. Other slot formats 2-61 include a mix of DL, UL, and flexible symbols. UEs are configured with a slot format (dynamically through DL control information (DCI), or semi- statically / statically through radio resource control (RRC) signaling) through a received slot format indicator (SFI). Note that the following description also applies to a 5G NR frame structure that is TDD.

[0060] Figures 2A-2D The frame structure is illustrated, and aspects of the disclosure can be applicable to other wireless communication technologies that can have different frame structures and / or different channels. A frame (10 ms) can be divided into 10 equally sized subframes (1 ms). Each subframe can include one or more time slots. A subframe can also include mini-slots, which can contain 7, 4, or 2 symbols. Each time slot can include 14 or 12 symbols depending on whether a cyclic prefix (CP) is normal or extended, respectively. For a normal CP, each time slot can contain 14 symbols, while for an extended CP, each time slot can contain 12 symbols. A symbol on the DL can be a CP-orthogonal frequency division multiplexing (OFDM) (CP-OFDM) symbol. A symbol on the UL can be a CP-OFDM symbol (for high throughput scenarios) or a discrete Fourier transform (DFT) spread 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 time slots within a subframe is based on the CP and numerology. The numerology defines the subcarrier spacing (SCS) and, effectively, the symbol length / duration, which is equal to 1 / SCS.

[0061]

[0062] For normal CP (14 symbols / slot), different numerologies μ0to 4 allow 1, 2, 4, 8, and 16 slots per subframe, respectively. For extended CP, numerology 2 allows 4 slots per subframe. Accordingly, for normal CP and numerology μ, there are 14 symbols / slot and 2 μ SCSs equal to 2 μ* 15 kHz, where μ is a numerology design 0 through 4. As such, numerology design μ = 0 has a subcarrier spacing of 15 kHz, while numerology design μ = 4 has a subcarrier spacing of 240 kHz. The symbol length / duration is inversely related to the subcarrier spacing. Figures 2A to 2D An example of normal CP with 14 symbols per slot and numerology μ = 2 with 4 slots per subframe is provided. The slot duration is 0.25 ms, the subcarrier spacing is 60 kHz, and the symbol duration is approximately 16.67 μβ. Within a frame collection, there can be one or more different bandwidth parts (BWPs) that are frequency division multiplexed (see Figure 2B ). Each BWP can have a particular numerology and CP (normal or extended).

[0063] A resource grid can be used to represent the frame structure. Each time slot includes resource blocks (RBs) (also referred to as physical RBs (PRBs)) that extend for 12 consecutive subcarriers. The resource grid is divided into multiple resource elements (REs). The number of bits carried by each RE depends on the modulation scheme.

[0064] As explained in Figure 2A , some of the REs carry reference (pilot) signals (RS) for the UE. The RS can include demodulation RS (DM-RS) (indicated as R for one particular configuration, but other DM-RS configurations are possible) and channel state information reference signals (CSI-RS) for channel estimation at the UE. The RS can also include beam measurement RS (BRS), beam refinement RS (BRRS), and phase tracking RS (PT-RS).

[0065] Figure 2BAn example of various DL channels within a subframe of a frame is shown. The 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 one BWP can be referred to as a control resource set (CORESET). A UE is configured to monitor PDCCH candidates in a PDCCH search space (e.g., common search space, UE-specific search space) during PDCCH monitoring occasions on the CORESET, where the PDCCH candidates have different DCI formats and different aggregation levels. Additional BWPs can be located at higher and / or lower frequencies that span the channel bandwidth. A primary synchronization signal (PSS) can be within symbol 2 of particular subframes of a frame. The PSS is used by a UE 104 to determine subframe / symbol timing and a physical layer identity. A secondary synchronization signal (SSS) can be within symbol 4 of particular subframes of a frame. The SSS is used by a UE to determine a physical layer cell identity group number and radio frame timing. Based on the physical layer identity and the physical layer cell identity group number, the UE can determine a physical cell identifier (PCI). Based on the PCI, the UE can determine the locations of DM-RS. The physical broadcast channel (PBCH), which carries a master information block (MIB) that provides system bandwidth configuration and scheduling information, can be logically grouped with the PSS and SSS to form a synchronization signal (SS) / PBCH block (also referred to as SS block (SSB)). The MIB provides a number of RBs in the system bandwidth and a system frame number (SFN). The physical downlink shared channel (PDSCH) carries user data, broadcast system information such as system information blocks (SIBs), and paging messages.

[0066] As explained in Figure 2C some of the REs carry DM-RS (indicated as R for one particular configuration, but other DM-RS configurations are possible) for channel estimation at the base station. The UE can transmit DM-RS for the physical uplink control channel (PUCCH) and DM-RS for the physical uplink shared channel (PUSCH). The PUSCH DM-RS can be transmitted in the first one or two symbols of the PUSCH. The PUCCH DM-RS can be transmitted in different configurations depending on whether short or long PUCCHs are transmitted and on the particular PUCCH format used. The UE can transmit sounding reference signals (SRS). The SRS can be transmitted in the last symbol of a subframe. The SRS can have a comb-structure, and a UE can transmit SRS on one of the combs. The SRS can be used by a base station for channel quality estimation to enable frequency-dependent scheduling on the UL.

[0067] Figure 2DExamples of various UL channels within a subframe of a frame are illustrated. The PUCCH may be located at the position indicated in one configuration. The PUCCH carries uplink control information (UCI), such as scheduling requests, channel quality indicator (CQI), precoding matrix indicator (PMI), rank indicator (RI), and hybrid automatic repeat request (HARQ) acknowledgement (HARQ-ACK) information (ACK) / negative ACK (NACK) feedback. The PUSCH carries data and may additionally be used to carry buffer status reports (BSRs), power headroom reports (PHRs), and / or UCI.

[0068] Figure 3 is a block diagram illustrating an example of a first wireless device configured to exchange wireless communications with a second wireless device. In the illustrated example, the first wireless device may include a base station 310, the second wireless device may include a UE 350, and the base station 310 may be in communication with the UE 350 in an access network. In some examples, the relay 107 may amplify and / or forward communications between the base station 310 and the UE 350. In some examples, the relay 107 may amplify and forward wireless communications between different devices (e.g., including an IAB node or other relay in addition to the example with a UE and a base station). In one aspect, the relay 107 may include a configuration component 198 that uses a control link to, for example, perform the following actions: (1) integrate the relay 107 and share its capabilities, (2) define new control messages to configure RU operation, (3) define beamforming configurations, (4) establish transmit power configurations and configurable operating bandwidths, and (5) perform time domain resource allocation.

[0069] like Figure 3 , base station 310 includes a transmit processor (TX processor 316), a transceiver 318 including a transmitter 318a and a receiver 318b, antenna 320, a receive processor (RX processor 370), a channel estimator 374, a controller / processor 375, and a memory 376. Example UE 350 includes antenna 352, a transceiver 354 including a transmitter 354a and a receiver 354b, an RX processor 356, a channel estimator 358, a controller / processor 359, a memory 360, and a TX processor 368. In other examples, base station 310 and / or UE 350 may include additional or alternative components.

[0070] In the DL, IP packets from the EPC 160 can 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, SIBs), 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; PDCP layer functionality associated with header compression / decompression, security (ciphering, deciphering, integrity protection, integrity verification), and handover support functions; RLC layer functionality associated with the transfer of upper layer packet data units (PDUs), error detection 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.

[0071] The TX processor 316 and the RX processor 370 implement layer 1 functionality associated with various signal processing functions. Layer 1, which includes a physical (PHY) layer, can include error detection on the transport channels, forward error correction (FEC) coding / decoding of the transport channels, interleaving, rate matching, mapping to physical channels, modulation / demodulation of physical channels, and MIMO antenna processing. The TX processor 316 handles mapping to signal constellations based on various modulation schemes (e.g., binary phase-shift keying (BPSK), quadrature phase-shift keying (QPSK), M-phase-shift keying (M-PSK), M-quadrature amplitude modulation (M-QAM)). The coded and modulated symbols can then be split into parallel streams. Each stream can then be mapped to an OFDM subcarrier, multiplexed with a reference signal (e.g., pilot) 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 precoded to produce multiple spatial streams. Channel estimates from a channel estimator 374 can be used to determine the coding and modulation schemes, as well as for spatial processing. The channel estimate can be derived from a reference signal and / or channel condition feedback transmitted by the UE 350. Each spatial stream can then be provided to a different antenna 320 via a separate transmitter 318a. Each transmitter 318a can modulate an RF carrier with a respective spatial stream for transmission.

[0072] At the UE 350, each receiver 354b receives a signal through its respective antenna 352. Each receiver 354b recovers information modulated onto an RF carrier and provides the information to the 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 streams destined for the UE 350. If multiple spatial streams are destined for the UE 350, they can be combined by the RX processor 356 into a single OFDM symbol stream. 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 comprises 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 points transmitted by the base station 310. These soft decisions can be based on channel estimates computed by the channel estimator 358. The soft decisions are then decoded and deinterleaved to recover the data and control signals that were originally transmitted by the base station 310 on the physical channel. The data and control signals are then provided to the controller / processor 359, which implements layer 3 and layer 2 functionality.

[0073] The controller / processor 359 can be associated with a memory 360 that stores program codes and data. The memory 360 can be referred to as a computer-readable medium. In the UL, the controller / processor 359 provides demultiplexing between transport and logical channels, packet reassembly, deciphering, header decompression, and control signal processing to recover IP packets from the EPC 160. The controller / processor 359 is also responsible for error detection using an ACK and / or NACK protocol to support HARQ operations.

[0074] Similar to the functionality described in connection with the DL transmission by the base station 310, the controller / processor 359 provides RRC layer functionality associated with system information (e.g., MIB, SIBs) acquisition, RRC connections, and measurement reporting; PDCP layer functionality associated with header compression / decompression, and security (ciphering, deciphering, integrity protection, integrity verification); RLC layer functionality associated with the transfer of upper layer PDUs, error correction through ARQ, concatenation, segmentation, and reassembly of RLC 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 TBs, demultiplexing of MAC SDUs from TBs, scheduling information reporting, error correction through HARQ, priority handling, and logical channel prioritization.

[0075] Channel estimates derived by the channel estimator 358 from a reference signal or feedback transmitted by the base station 310 can 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 can be provided to different antenna 352 via separate transmitters 354a. Each transmitter 354a can modulate an RF carrier with a respective spatial stream for transmission.

[0076] The UL transmission is processed at the base station 310 in a manner similar to that described in connection with the receiver function at the UE 350. Each receiver 318b receives a signal through its respective antenna 320. Each receiver 318b recovers information modulated onto an RF carrier and provides the information to a RX processor 370.

[0077] The controller / processor 375 can be associated with a memory 376 that stores program codes and data. The memory 376 can be referred to as a computer- readable medium. In the UL, the controller / processor 375 provides demultiplexing between transport and logical channels, packet reassembly, deciphering, header decompression, control signal processing to recover IP packets from the UE 350. IP packets from the controller / processor 375 can be provided to the EPC 160. The controller / processor 375 is also responsible for error detection using an ACK and / or NACK protocol to support HARQ operations.

[0078] Figure 4 An example communication flow 400 is illustrated within a communication system as presented herein between a first wireless device 402 and a second wireless device 408 through a relay device 406. In one aspect, the first wireless device 402 can be implemented by a base station, while the second wireless device 408 can be implemented by a UE. In other examples, the first wireless device 402 can be implemented by an IAB node, a UE, or another relay. Similarly, the second wireless device 408 can be implemented by a base station, an IAB node, or another relay. In certain cases, direct communication between the first wireless device 402 and the second wireless device 408 can be difficult due to the presence of an obstruction or the second wireless device 408 being out of range of the first wireless device 402. As such, the relay device 406 can be configured to extend coverage of the second wireless device 408 by amplifying signals communicated between the wireless devices 402, 408.

[0079] In some examples, the relay device 406 can be controlled by a control node 404 such that a configuration of the relay device 406 can be adjusted (statically or dynamically) or reconfigured depending on conditions (e.g., internal conditions, external conditions, and / or environmental conditions) of the communication system including the first wireless device 402, the second wireless device 408, and the relay device 406. For example, control signaling 410 can be used to reconfigure a beamforming procedure of the relay device 406 based on these conditions. In some examples, the control signaling 410 can include a first control signal 410a from the control node 404 to the relay device 406. In some examples, the control signaling 410 can include a second control signal 410b from the first wireless device 402 to the relay device 406. In one aspect, the control node 404 can reside within the first wireless device 402. In such examples, the first wireless device 402 can transmit the second control signal 410b to the relay device 406. In other examples, the control node 404 can be a device separate from the first wireless device 402. For example, the control node 404 can transmit the first control signal 410a that is received by the relay device 406.

[0080] The control signaling 410 (e.g., first control signal 410a and / or second control signal 410b) can include a beamforming configuration for the relay device 406, such as, for example, a receive beam for receiving communications from the first wireless device 402 and / or the control node 404 and one or more transmit beams for forwarding communications to the second wireless device 408. The control signaling 410 can include a transmit power configuration. The control signaling 410 can include a configuration of an operating bandwidth. In some examples, the operating bandwidth can include frequency processing and filtering. The control signaling 410 can indicate a time domain resource allocation for the relay device 406. The time domain resource allocation can include a UL / DL pattern indicating when the relay device 406 is configured to use UL and DL resources. For example, the time domain resource allocation can indicate time resources for the relay device 406 to apply the indicated beamforming configuration. In some examples, the relay device 406 can be configured with more than one beam to apply at different times, such as a set of beams to apply in a pattern.

[0081] In some aspects, the relay device 406 can be dynamically controlled by the control node 404 such that the configuration of the relay device 406 can be dynamically adjusted or reconfigured depending on the conditions of the communication system including the first wireless device 402, the second wireless device 408, and the relay device 406. However, in some scenarios, the dynamic control of the relay device 406 by the control node 404 can utilize additional power and / or signaling overhead. Aspects disclosed herein provide techniques that can enable a reduction in dynamic control signaling between a control node and a relay to provide power savings for the MT of the relay and lower signaling overhead for the control node.

[0082] For example, in Figure 4 In the middle, the first wireless device 402 can transmit a downlink signal 414, which can be received by the relay device 406. The downlink signal 414 can carry a downlink signal. At 418, the relay device 406 can amplify the downlink signal 414 from the first wireless device 402. The relay device 406 can then transmit a relayed signal 420, which is received by the second wireless device 408. The relayed signal 420 can be the amplified downlink signal 414.

[0083] In another example, the second wireless device 408 can transmit an uplink signal 422, which is received by the relay device 406. The uplink signal 422 can carry an uplink signal. At 424, the relay device 406 can amplify the uplink signal 422. The relay device 406 can then transmit a relayed signal 426, which is received by the first wireless device 402. The relayed signal 426 can be the amplified uplink signal 422.

[0084] In some examples, the repeater device 406 can transition to a power saving mode or a low power mode. For example, upon receiving the control signaling 410, the repeater device 406 can enter a low power mode at 412.

[0085] Figure 5 is a block diagram of an example communication system 500 including a base station 510 (e.g., gNB), a UE 530, and a repeater 520, which can include a repeating unit 522 (“RU”) and a mobile termination 524 (“MT”). In some examples, the repeating unit 522 can be referred to as a remote unit. The base station 510 can correspond to Figure 1 the base station 102, 180, Figure 3 the base station 310, or Figure 4 the first wireless device 402 in FIG. 13. The UE 530 can correspond to Figure 1 the UE 104, Figure 3 the UE 350 in FIG. 11, or Figure 4 the second wireless device 408 in FIG. 13.

[0086] In Figure 5 , the repeating unit 522 of the repeater 520 can be configured to amplify and transmit downlink signals from the base station 510 to the UE 530 using an access link 514. The repeating unit 522 can also be configured to amplify and transmit uplink signals from the UE 530 to the base station 510 using the access link 514. As such, the access link 514 can be used as a path to carry UL signals from and / or downlink signals to the UE 530. In some examples, the access link 514 can be controlled by the base station 510.

[0087] In some examples, the base station 510 can also establish a backhaul link 512 with the mobile termination 524 of the repeater 520. The backhaul link 512 can be configured to carry UL / DL control signals to configure the operation of the repeater 520. For example, the backhaul link 512 can use a control interface of the base station 510 to send messages to the repeater 520 to control beamforming procedures or calculations for downlink / uplink transmissions, such as using different beams or beams pointing in different directions to transmit to different UEs. Although Figure 5 While examples are illustrated in which the control node is a base station, in other examples, the control node can be a different device, such as an IAB node. Additionally, the control node can provide control signaling to the repeater for use in repeating communications originating at different devices.

[0088] Figure 66 is a schematic diagram of a repeater 600 including a repeating unit 610 ("RU") and a mobile terminal assembly 620 ("MT"). The repeater 600 may also include a receive array 602 ("RX") and a transmit array 604 ("TX"). The receive array 602 may receive UL / DL signals (e.g., on a control link with a control node and on an access link with one or more devices for which the repeater forwards communications), and the transmit array 604 may transmit UL / DL signals (e.g., on a control link and access link(s)). The repeating unit 610 may include an analog amplifier 612 to amplify the UL / DL signals received at the receive array 602 and pass the amplified signals to the transmit array 604.

[0089] exist Figure 6 , the mobile terminal component 620 includes a module configured to receive data from a control node (e.g., Figure 4 The baseband processor 622 receives control signaling from the control node 404, the first wireless device 402, the base station 102, the base station 180, the base station 510, or the IAB node 103. The control signaling may include control parameters for the mobile terminal component 620 when forwarding communications. The repetition unit 610 applies the control configuration to the mobile terminal component 620. For example, the repetition unit 610 may apply one or more control parameters to the transmit array 604 based on the control received by the mobile terminal component 620 from the control node. The repetition unit 610 may receive and process signals from similar devices in combination with the baseband processor 622. Figure 3 Control signals of the control node of the UE 350 are described.

[0090] Figure 7 Illustrated is an example communication flow 700 between a base station 702 and a UE 704 through a relay 706 as presented herein. In the illustrated example, the relay 706 includes a mobile terminal component (e.g., MT 708) and a repeating unit (e.g., RU 709). The communication flow between the base station 702 and the relay 706 may include outbound procedures 710 including initial access 712, RU integration 714, radio link and resource management 716, and RU configuration 718. The outbound procedures 710 may be performed by the base station 702 and the MT 708. The communication flow between the base station 702 and the UE 704 may pass through the RU 709 of the relay 706 and may include access-related procedures 720 including downlink signals 722 and uplink signals 726. The downlink signals 722 may include UE downlink signaling and / or MT downlink signaling from the base station 702 to the UE 704 and / or MT 708, respectively. The uplink signals 726 may include UE uplink signals 724 from the UE 704 to the base station 702 and MT uplink signaling from the MT 708 to the base station 702 .

[0091] In Figure 7 , initial access 712 can include the repeater 706 announcing itself to the base station 702, establishing a control link, and establishing a radio link with the base station 702. RU integration 714 can include configuring the repeater 706. RU integration 714 can also include the MT 708 identifying itself as a repeater and sharing its capabilities with the base station 702. Radio link and resource management 716 can include radio link monitoring and beam management. RU configuration 718 can include defining new control messages to configure RU operation. RU configuration 718 can include at least defining beamforming configurations. RU configuration 718 can also include establishing transmit power configurations and configurable operating bandwidths. RU configuration 718 can further include time domain resource allocation (e.g., on what resources to employ the indicated beamforming configurations).

[0092] As described in connection with Figure 4 , a repeater device can receive control signaling from a control node. For example, Figure 8 An example communication flow 800 between a control node 802 and a repeater 804 as presented herein is illustrated. In the illustrated example, the communication flow 800 facilitates improved power saving at the repeater and / or reduced signaling overhead for the control node based on signaling from the control node. Aspects of the control node 802 can be implemented by the control node 404 of Figure 4 , the base station 510 of Figure 5 , and / or the base station 702 of Figure 7 Aspects of the repeater 804 can be implemented by the repeater device 406 of Figure 4 , the repeater 520 of Figure 5 , the repeater 600 of Figure 6 , and / or the repeater 706 of Figure 7 Although not shown in the illustrated example of Figure 8 , it can be appreciated that in additional or alternative examples, the control node 802 can be in communication with one or more other repeaters, and / or the repeater 804 can be in communication with one or more other control nodes.

[0093] As shown in Figure 8 , the repeater 804 includes a mobile terminal (e.g., MT 806) and a repeating unit (e.g., RU 808). Aspects of the MT 806 can be implemented by the mobile terminal 524 of Figure 5 , and / or the MT 708 of Figure 7 Aspects of the RU 808 can be implemented by the repeating unit 522 of Figure 5 , and / or the RU 709 of Figure 7 .

[0094] In Figure 8In the illustrated example, at 810, the control node 802 and the relay 804 establish a link, such as a control link. The link can facilitate a control interface between the control node 802 and the relay 804 for communicating control signaling. At 812, the control node 802 and the relay 804 can determine a beam pair for communication. For example, when communication between the control node 802 and the relay 804 occurs using a higher frequency (e.g., FR2, etc.), then it can be beneficial for the control node 802 and the relay 804 to establish a beam pair to facilitate communication between the control node 802 and the relay 804. Aspects of 810 and 812 can be implemented by the forward procedure 710 of Figure 7 .

[0095] After establishing the link with the relay 804, the control node 802 transmits a relay configuration 814, which is received by the relay 804. The relay configuration 814 can include one or more parameters that the relay applies to communication between a first wireless device (such as the base station 702 of Figure 7 ) and a second wireless device (such as the UE 704 of Figure 7 ). The relay configuration 814 can provide the one or more parameters for an upcoming time slot. In some examples, the relay configuration 814 can include a periodic configuration. In some examples, the relay configuration 814 can include a semi-static configuration. For example, the one or more parameters can apply for a time period. In some examples, the one or more parameters can apply for a link between the first wireless device and the relay (e.g., the RU 808). In some examples, the one or more parameters can apply for a link between the second wireless device and the relay (e.g., the RU 808). In some examples, the one or more parameters can apply for a link between the first wireless device and the RU 808 and a link between the second wireless device and the RU 808.

[0096] As Figure 8As shown in FIG. 8, the relay configuration 814 can include one or more parameters. For example, the relay configuration 814 can include a beamforming configuration 816 that can configure TX / RX beams at the relay 804. The relay configuration 814 can include a TDD pattern 818 that can define time slots that are configured as UL and / or DL. The relay configuration 814 can include a transmit power configuration 820 that can configure the relay 804 to apply transmit power at repeated signals. The relay configuration 814 can include a bandwidth configuration 822 that defines an operating bandwidth for the relay 804. The relay configuration 814 can include a power saving configuration 824 that can indicate a power saving scheme for the relay 804. The relay configuration 814 can include random access channel (RACH) and / or scheduling request (SR) resources (e.g., RACH / SR resources 826) that indicate resources that the relay 804 can use to initiate communications with the control node 802. The relay configuration 814 can include a time domain resource allocation 828 that defines time domain resources for the relay 804. The relay configuration 814 can include a scan periodicity 830 that configures the relay 804 to scan and / or measure reference signals and / or beams with a reduced periodicity.

[0097] In some examples, communications between the control node 802 and the MT 806 can not be frequent. For example, the relay configuration 814 can provide semi-static configurations that the relay 804 can use to repeatedly operate for an extended period of time (e.g., while the semi-static configurations are valid). For example, the relay 804 can be configured to avoid frequently switching beams and / or communications using a beam pair can be stable such that the relay 804 can avoid frequently switching beams. In such examples, the relay configuration 814 can include the beamforming configuration 816. The beamforming configuration 816 can configure TX / RX beams of the relay 804. The control node 802 can also provide the TDD pattern 818 to apply to the beam set 817. The relay 804 can apply the TX / RX beams based on the TDD pattern 818. For example, the control node 802 can indicate the beam set 817 that includes beam i, beam j, and beam k. Based on the beamforming configuration 816, the beam set 817, and the TDD pattern 818, the relay 804 can use beam i in a first time slot, can use beam j in a second time slot, and can use beam k in a third time slot. The relay 804 can repeat the beam pattern based on a periodic pattern. The relay 804 can use the beamforming configuration 816, the beam set 817, and the TDD pattern 818 to facilitate communications between the first wireless device and the second wireless device.

[0098] As another example, the control node 802 can configure the relay 804 to have the beam set 817 (or beam pattern) applied for an extended time interval. Configuring the relay 804 to use the beam set 817 (or beam pattern) for an extended time interval can be beneficial in scenarios where the relay 804 may not be able to monitor control signaling (e.g., over the extended time interval). In such an example, the control node 802 can avoid reconfiguring the relay 804 during the extended time interval.

[0099] In some examples, the link (e.g., control link) between control node 802 and relay 804 can be stable. For example, control node 802 and relay 804 can be stationary. In such examples, control node 802 can avoid performing frequent reconfiguration of relay 804.

[0100] In some examples, the control node 802 may cause the relay 804 to transition to a power saving mode or low power mode. For example, the control node 802 may transmit a power saving indication 834, which is received by the relay device 804. At 836, the relay 804 may enter the power saving mode. In some examples, the relay 804 may enter the power saving mode after receiving the control signaling, such as in conjunction with Figure 4 412. In other examples, the relay 804 can transition to the power save mode at different times. In some examples, the relay 804 can transmit a power save request 832, which is received by the control node 802. In such examples, the control node 802 can transmit a power save indication 834 after receiving the power save request 832.

[0101] In some examples, while operating in power mode, the RU 808 of the repeater 804 can continue to forward communications between the first wireless device and the second wireless device at 850, as in conjunction with Figure 7 820 . In some examples, the repeater 804 and the RU 808 can apply one or more parameters of the repeater configuration 814 when forwarding communications. For example, the repeater 804 can use the beamforming configuration 816, the transmit power configuration 820, the bandwidth configuration 822, and / or the time domain resource allocation 828 to forward communications between the first wireless device and the second wireless device.

[0102] In some examples, the relay 804 can transition the MT 806 to a low power mode while operating in the low power mode. For example, at 838, the MT 806 can transition to an RRC inactive mode or an RRC idle mode. While the MT 806 is operating in the low power mode (e.g., the RRC inactive mode or the RRC idle mode), the MT 806 can perform one or more operations based on one or more parameters of the relay configuration 814. For example, the MT 806 can be configured to perform reduced operations during a power saving mode based on the power saving configuration 824 of the relay configuration 814. In some examples, the MT 806 can perform, at 840, discontinuous monitoring for control signaling (e.g., the first control signal 410a and / or the second control signal 410b) or a wake-up signal 842 from the control node 802. The MT 806 can skip monitoring for control signals at 844 until a configured time. The configured time can be based on a duration of a power saving phase according to the power saving configuration 824. Figure 4

[0103] In some examples, the MT 806 can initiate communications with the control node 802 at 846. For example, the relay configuration 814 can include RACH / SR resources 826 that indicate resources that the relay 804 can use to initiate communications with the control node 802. In such examples, the MT 806 can use dedicated RACH resources and / or SR resources of the RACH / SR resources 826 to initiate communications with the control node 802.

[0104] In some examples, the MT 806 can monitor / measure reference signals or beams (e.g., for radio resource management (RRM) or radio link management (RLM)) at a reduced periodicity at 848. For example, the relay configuration 814 can include a scan periodicity 830 that configures the relay 804 to scan and / or measure reference signals and / or beams at a reduced periodicity. In such examples, the MT 806 can use the scan periodicity 830 to monitor / measure the reference signals and / or beams.

[0105] Figure 9 is a flowchart 900 of a wireless communication method. The method can be performed by a relay (e.g., Figure 1 the relay 107 of FIG. 1, Figure 4 the relay device 406 of FIG. 4, Figure 7 the relay 706 of FIG. 7, Figure 8 the relay 804 of FIG. 8, and / or Figure 11 the device 1102 of FIG. 11). The method can facilitate improved power saving at a relay and / or reduced signaling overhead for a control node based on signaling from the control node.

[0106] ​In one aspect, the repeater comprises an analog repeater configured to receive, amplify, and retransmit signals between a first wireless device and a second wireless device.

[0107] At 902, the relay establishes a control link with the control node, such as in conjunction with Figure 8 In some examples, the repeater can be Figure 7 The control link is established during the initial access 712 of the outbound protocol 710 of the repeater. In some examples, the repeater can receive control signaling from the control node on the control link using the same frequency as the communications forwarded by the repeater. In some examples, the repeater can receive control signaling from the control node on the control link using a different frequency than the communications forwarded by the repeater. In another aspect, the control node can be one of a plurality of nodes communicating with the repeater. Establishing the control link with the control node at 902 can be performed by Figure 11 The establishment component 1140 of the device 1102 is executed.

[0108] At 904, the repeater receives, via a control link, a configuration of one or more parameters of the repeater to forward communications between a first wireless device and a second wireless device, such as in conjunction with Figure 7 RU configuration 718 and / or Figure 8 The configuration of the repeater 814 is described. The configuration of receiving one or more parameters at 904 can be performed by Figure 11 The configuration component 1142 of the device 1102 is executed.

[0109] In some examples, one or more parameters may include a beamforming configuration, such as Figure 8 Beamforming configuration 816. In some examples, one or more parameters may include a TDD mode, such as Figure 8 TDD mode 818. In some examples, one or more parameters may include a transmit power configuration, such as Figure 8 The transmit power configuration 820. In some examples, one or more parameters may include a bandwidth configuration, such as Figure 8 Bandwidth configuration 822. In some examples, one or more parameters may include a power saving configuration, such as Figure 8 Power saving configuration 824.

[0110] In some examples, the configuration may include periodic configuration of one or more parameters for at least one of a first link between the repeater and the first wireless device or a second link between the repeater and the second wireless device. In some examples, the configuration includes semi-static configuration of the one or more parameters, and wherein the repeater applies the semi-static configuration for a period of time.

[0111] In one aspect, the first wireless device is a base station, a user equipment, an additional relay, or an IAB node. In another aspect, the second wireless device is a base station, a user equipment, an additional relay, or an IAB node.

[0112] At 906, the repeater transitions the MT component of the repeater to a power saving mode for at least a period of time after receiving the configuration, as described in conjunction with Figure 8 The transition to power saving mode at 906 may be performed by Figure 11 The transformation component 1144 of the device 1102 is executed.

[0113] In some examples, the power saving mode may include reducing monitoring of the control at 1012, such as in conjunction with Figure 8 In some examples, the power save mode may include monitoring the wake-up signal at 1014, as described in conjunction with the wake-up signal 842. In some examples, the power save mode may include skipping monitoring the control signal for a duration of time at 1016, as described in conjunction with the wake-up signal 842. Figure 8 In some examples, the power saving mode may include initiating control communications with the control node on a control link using the configured random access resources (e.g., at 1018) or the configured scheduling request resources (e.g., at 1020), as described in conjunction with Figure 8 In some examples, the power saving mode may include reducing reference signal measurements (e.g., at 1022) and / or reducing beam measurements (e.g., at 1024), as described in conjunction with Figure 8 In some examples, the power saving mode may include setting the MT component to an RRC inactive mode (e.g., at 1026) or to an RRC idle mode (e.g., at 1028), as described in conjunction with Figure 8 Aspects of the power saving modes at 1012, 1014, 1016, 1018, 1020, 1022, 1024, 1026, and / or 1028 may be provided by Figure 11 The power saving component 1148 of the device 1102 is executed.

[0114] At 908, the repeater forwards communications between the first wireless device and the second wireless device based on one or more parameters in the configuration, such as in conjunction with Figure 7 For example, the relay may forward downlink signals 722 from the base station 702 to the UE 704, or the relay may forward uplink signals 724 from the UE 704 to the base station 702. Forwarding the communication between the first wireless device and the second wireless device at 908 may be performed by Figure 11by the forwarding component 1146 of the device 1102 of

[0115] In some examples, the relay forwards communications between the first and second wireless devices while the MT component is in the power saving mode. For example, the relay can include an RU that forwards communications between the first and second wireless devices while the MT component is in the power saving mode, as described in connection with Figure 8 850. The relay can forward the communications (e.g., at 1104) based on the beamforming configuration 816, the transmit power configuration 820, the bandwidth configuration 822, and / or the time domain resource allocation 828 received from the control node via the configuration.

[0116] Figure 10 is a flowchart 1000 of a method of wireless communication. The method can be performed by a relay (e.g., Figure 1 the relay 107 of Figure 4 the relay device 406 of Figure 7 the relay 706 of Figure 8 the relay 804 of Figure 11 the device 1102 of). The method can facilitate improved power saving at the relay and / or reduced signaling overhead for the control node based on signaling from the control node.

[0117] In one aspect, the relay includes an analog relay configured to receive, amplify, and forward signals between a first wireless device and a second wireless device.

[0118] At 1002, the relay establishes a control link with a control node, as described in connection with 810 of Figure 8 In some examples, the relay can establish the control link during the initial access 712 of the out-of-band procedure 710 of Figure 7 In some examples, the relay can receive control signaling from the control node on the control link using a same frequency as the communications that the relay forwards. In some examples, the relay can receive control signaling from the control node on the control link using a different frequency than the communications that the relay forwards. In another aspect, the control node can be one of a plurality of nodes with which the relay communicates. Establishing the control link with the control node at 1002 can be performed by the establishment component 1140 of the device 1102 of Figure 11

[0119] At 1004, the relay receives, via the control link, a configuration of one or more parameters of the relay to forward communications between a first wireless device and a second wireless device, as described in connection with the RU configuration 718 of Figure 7 and / or the relay configuration 814 of Figure 8 Receiving the configuration of the one or more parameters at 1004 can be performed by the reception component 1138 of the device 1102 of Figure 11 ​by the configuration component 1142 of the device 1102.

[0120] In some examples, the one or more parameters can include a beamforming configuration, such as Figure 8 the beamforming configuration 816. In some examples, the one or more parameters can include a TDD pattern, such as Figure 8 the TDD pattern 818. In some examples, the one or more parameters can include a transmit power configuration, such as Figure 8 the transmit power configuration 820. In some examples, the one or more parameters can include a bandwidth configuration, such as Figure 8 the bandwidth configuration 822. In some examples, the one or more parameters can include a power saving configuration, such as Figure 8 the power saving configuration 824.

[0121] In some examples, the configuration can include a periodic configuration of the one or more parameters for at least one of a first link between the relay and the first wireless device or a second link between the relay and the second wireless device. In some examples, the configuration includes a semi-static configuration of the one or more parameters, and wherein the relay applies the semi-static configuration for a time period.

[0122] In one aspect, the first wireless device is a base station, a user equipment, an additional relay, or an IAB node. In another aspect, the second wireless device is a base station, a user equipment, an additional relay, or an IAB node.

[0123] At 1010, the relay transitions the MT component of the relay to a power saving mode for at least a time period after receiving the configuration, as described in connection with Figure 8 836. The transition to the power saving mode at 1010 can be performed by the transition component 1144 of the device 1102. Figure 11

[0124] In some examples, the power saving mode can include reducing monitoring for control at 1012, as described in connection with Figure 8 840. In some examples, the power saving mode can include monitoring for a wake-up signal at 1014, as described in connection with the wake-up signal 842. In some examples, the power saving mode can include skipping monitoring for control signals for a time duration at 1016, as described in connection with Figure 8 844. In some examples, the power saving mode can include using a configured random access resource (e.g., at 1018) or a configured scheduling request resource (e.g., at 1020) to initiate control communications with the control node on the control link, as described in connection with Figure 8 ​described at 846. In some examples, the power saving mode can include reducing reference signal measurements (e.g., at 1022) and / or reducing beam measurements (e.g., at 1024), as described in connection with Figure 8 described at 848. In some examples, the power saving mode can include setting the MT component to an RRC inactive mode (e.g., at 1026) or to an RRC idle mode (e.g., at 1028), as described in connection with Figure 8 described at 838. Aspects of the power saving mode at 1012, 1014, 1016, 1018, 1020, 1022, 1024, 1026, and / or 1028 can be performed by a power saving component 1148 of the apparatus 1102. Figure 11 described at 838. Aspects of the power saving mode at 1012, 1014, 1016, 1018, 1020, 1022, 1024, 1026, and / or 1028 can be performed by a power saving component 1148 of the apparatus 1102.

[0125] At 1030, the relay forwards communications between the first wireless device and the second wireless device based on one or more parameters in the configuration, as described in connection with Figure 7 described at 838. Aspects of the power saving mode at 1012, 1014, 1016, 1018, 1020, 1022, 1024, 1026, and / or 1028 can be performed by a power saving component 1148 of the apparatus 1102. Figure 11 described at 838. Aspects of the power saving mode at 1012, 1014, 1016, 1018, 1020, 1022, 1024, 1026, and / or 1028 can be performed by a power saving component 1148 of the apparatus 1102.

[0126] In some examples, the relay forwards communications between the first wireless device and the second wireless device while operating in the power saving mode. For example, the relay can include an RU that forwards communications between the first wireless device and the second wireless device while the MT component is in the power saving mode, as described in connection with Figure 8 described at 850. The relay can forward the communications based on the beamforming configuration 816, the transmit power configuration 820, the bandwidth configuration 822, and / or the time domain resource configuration 828 received from the control node via the configuration (e.g., at 1104).

[0127] In some examples, at 1008, the relay can receive an indication from the control node to enter the power saving mode, as described in connection with Figure 8 described at 838. Aspects of the power saving mode at 1012, 1014, 1016, 1018, 1020, 1022, 1024, 1026, and / or 1028 can be performed by a power saving component 1148 of the apparatus 1102. Figure 11 described at 838. Aspects of the power saving mode at 1012, 1014, 1016, 1018, 1020, 1022, 1024, 1026, and / or 1028 can be performed by a power saving component 1148 of the apparatus 1102.

[0128] In some examples, at 1006, the relay can transmit a request to a control node to enter the power saving mode to the control node prior to receiving the indication from the control node, as described in connection with Figure 8 described at 838. Aspects of the power saving mode at 1012, 1014, 1016, 1018, 1020, 1022, 1024, 1026, and / or 1028 can be performed by a power saving component 1148 of the apparatus 1102. Figure 11request component 1150 of the device 1102 performs.

[0129] Figure 11 FIG. 11 is a diagram 1100 that is an example of a hardware implementation for the device 1102. The device 1102 can be a relay (e.g., a relay 107), a component of a relay, or can implement relay functionality. The device 1102 can include an MT component 1128 with a cellular baseband processor 1104 (also referred to as a modem) coupled to a cellular RF transceiver 1122. The device 1102 also includes an RU portion 1106 that receives, amplifies, and forwards wireless communications between a first wireless device and a second wireless device. Figure 1

[0130] The first wireless device can be a base station 102, a base station 180, an IAB node 103, a UE 104, or another relay 107. The second wireless device can be a base station 102, a base station 180, an IAB node 103, a UE 104, or another relay 107. The MT component 1128 receives and processes control signaling from the control node 802 and applies the control to the RU portion 1106. The cellular baseband processor 1104 communicates with the control node 802 (e.g., a base station 102 / 180) through the cellular RF transceiver 1122 to receive control signaling for the cellular baseband processor 1104 and / or the MT component 1128.

[0131] The cellular baseband processor 1104 can include a computer- readable medium / memory. The computer-readable medium / memory can be non-transitory. The cellular baseband processor 1104 is responsible for general processing, including the execution of software stored on the computer-readable medium / memory. The software, when executed by the cellular baseband processor 1104, causes the cellular baseband processor 1104 to perform the various functions described supra. The computer-readable medium / memory can also be used for storing data that is manipulated by the cellular baseband processor 1104 when executing software. The cellular baseband processor 1104 further includes a reception component 1130, a communication manager 1132, and a transmission component 1134. The communication manager 1132 includes the one or more illustrated components. The components of the communication manager 1132 can be stored in the computer-readable medium / memory and / or configured as hardware within the cellular baseband processor 1104. The cellular baseband processor 1104 can be a component of the relay 107 and can include the memory and / or at least one of the TX processor, the RX processor, and the controller / processor.

[0132] The communication manager 1132 includes an establishment component 1140 configured to establish a control link with a control node, e.g., as described in connection with Figure 9 Figure 10 the 902 and / or the 1002.​​

[0133] The communication manager 1132 also includes a configuration component 1142 configured to receive, via the control link, a configuration of one or more parameters of the relay to forward communications between the first wireless device and the second wireless device, e.g., as described in connection with 904 and / or 1004 of FIG. 10. Figure 9 Figure 10

[0134] The communication manager 1132 also includes a transition component 1144 configured to transition the MT component of the relay to a power saving mode for at least a time period after receiving the configuration, e.g., as described in connection with 906 and / or 1006 of FIG. 10. Figure 9 Figure 10

[0135] The communication manager 1132 also includes a forwarding component 1146 configured to forward communications between the first wireless device and the second wireless device based on the one or more parameters in the configuration, e.g., as described in connection with 908 and / or 1030 of FIG. 10. Figure 9 Figure 10

[0136] The communication manager 1132 also includes a power saving component 1148 configured to perform one or more of: reducing monitoring for control signals, monitoring for a wake-up signal, skipping monitoring for control signals for a time duration, using a configured random access resource to initiate control communications with the control node on the control link, using a configured scheduling request resource to initiate control communications with the control node on the control link, reducing reference signal measurements, reducing beam measurements, setting the MT component to an RRC inactive mode, or setting the MT component to an RRC idle mode, e.g., as described in connection with 1012, 1014, 1016, 1018, 1020, 1022, 1024, 1026, 1028, respectively, of FIG. 10. Figure 10

[0137] The communication manager 1132 also includes a request component 1150 configured to transmit, to the control node, a request to enter a power saving mode prior to receiving an indication from the control node, e.g., as described in connection with 1006 of FIG. 10. Figure 10

[0138] The communication manager 1132 also includes an indication component 1152 configured to receive, from the control node, an indication for the MT component to enter a power saving mode, where the relay transitions the MT component to the power saving mode based on the indication from the control node, e.g., as described in connection with 1008 of FIG. 10. Figure 10

[0139] An apparatus can include means for performing any of the Figure 9 and / or Figure 10 ​​​​​​​​​additional components of the algorithm in the flowchart of FIG. 10. As such, Figure 9 and / or Figure 10 Each block of the flowchart of FIG. 10 can be performed by a component and the device can include one or more of those components. The components can be one or more hardware components specifically configured to carry out the stated processes / algorithm, implemented by a processor configured to perform the stated processes / algorithm, stored within a computer-readable medium for implementation by a processor, or some combination thereof.

[0140] As shown, the device 1102 can include various components for various functions. In one configuration, the device 1102, and in particular the cellular baseband processor 1104, includes means for establishing a control link with a control node. The example device 1102 also includes means for receiving, via the control link, a configuration of one or more parameters of a relay to forward communications between a first wireless device and a second wireless device. The example device 1102 also includes means for transitioning an MT component of the relay to a power saving mode for at least a time period after receiving the configuration. The example device 1102 also includes means for forwarding communications between the first wireless device and the second wireless device based on the one or more parameters in the configuration.

[0141] In another configuration, the example device 1102 also includes means for receiving, from the control node, an indication to enter the power saving mode for the MT component, where the relay transitions the MT component to the power saving mode based on the indication from the control node.

[0142] In another configuration, the example device 1102 also includes means for one or more of: reducing monitoring for control signals, monitoring for a wake-up signal, skipping monitoring for control signals for a time duration, using a configured random access resource to initiate control communications with the control node on the control link, using a configured scheduling request resource to initiate control communications with the control node on the control link, reducing reference signal measurements, reducing beam measurements, setting the MT component to an RRC inactive mode, or setting the MT component to an RRC idle mode.

[0143] In another configuration, the example device 1102 also includes means for transmitting, to the control node, a request to enter the power saving mode prior to receiving the indication from the control node.

[0144] A means may be one or more of the components of the device 1102 configured to perform the functions recited by the means. As previously described, the device 1102 may include the TX processor 368, the RX processor 356, and the controller / processor 359. Thus, in one configuration, these means may be the TX processor 368, the RX processor 356, and the controller / processor 359 configured to perform the functions recited by the means.

[0145] Figure 12 1200 is a flow chart of a wireless communication method. The method may be performed by a control node (e.g., Figure 1 Base stations 102, 180, Figure 1 IAB node 103, Figure 4 Control node 404, Figure 8 Control node 802 and / or Figure 14 The method may facilitate improved power saving at the relay and / or reduced signaling overhead of the control node based on signaling from the control node.

[0146] In one aspect, the repeater comprises an analog repeater configured to receive, amplify, and retransmit signals between a first wireless device and a second wireless device.

[0147] At 1202, the control node establishes a control link with the relay, such as Figure 8 In some examples, the control node may be Figure 7 The control link is established during the initial access 712 of the outbound protocol 710 of the relay. In some examples, the control node can transmit control signaling to the relay on the control link using the same frequency as the communications forwarded by the relay. In some examples, the control node can transmit control signaling to the relay on the control link using a different frequency than the communications forwarded by the relay. In another aspect, the control node can be one of multiple nodes communicating with the relay. Establishing the control link with the relay at 1202 can be performed by Figure 14 The establishment component 1440 of the device 1402 is executed.

[0148] At 1204, the control node transmits a configuration of one or more parameters of the relay via the control link to forward communications between the first wireless device and the second wireless device, as in conjunction with Figure 7 RU configuration 718 and / or Figure 8 The configuration of the repeater 814 described above. The configuration of transmitting one or more parameters at 1204 can be performed by Figure 14 The configuration component 1442 of the device 1402 is executed.

[0149] In some examples, one or more parameters may include a beamforming configuration, such asFigure 8 a beamforming configuration 816 of the first wireless device. In some examples, the one or more parameters can include a TDD pattern, such as Figure 8 a TDD pattern 818 of the first wireless device. In some examples, the one or more parameters can include a transmit power configuration, such as Figure 8 a transmit power configuration 820 of the first wireless device. In some examples, the one or more parameters can include a bandwidth configuration, such as Figure 8 a bandwidth configuration 822 of the first wireless device. In some examples, the one or more parameters can include a power saving configuration, such as Figure 8 a power saving configuration 824 of the first wireless device.

[0150] In some examples, the configuration can include a periodic configuration of the one or more parameters for at least one of the first link between the relay and the first wireless device or the second link between the relay and the second wireless device. In some examples, the configuration includes a semi-static configuration of the one or more parameters, and wherein the relay applies the semi-static configuration for a time period.

[0151] In one aspect, the first wireless device is a base station, a user equipment, an additional relay, or an IAB node. In another aspect, the second wireless device is a base station, a user equipment, an additional relay, or an IAB node.

[0152] At 1206, the control node transmits, to the relay, an indication for the MT component of the relay to enter a power saving mode, as described in connection with Figure 8 a power saving indication 834. The transmitting of the indication at 1206 can be performed by the indication component 1444 of the device 1402. Figure 14

[0153] In some examples, the power saving mode can include reducing monitoring for control, as described in connection with 840. In some examples, the power saving mode can include monitoring for a wake-up signal, as described in connection with the wake-up signal 842. In some examples, the power saving mode can include skipping monitoring for control signals for a time duration, as described in connection with 844. In some examples, the power saving mode can include using a configured random access resource or a configured scheduling request resource to initiate control communications with the control node on the control link, as described in connection with 846. In some examples, the power saving mode can include reducing reference signal measurements and / or reducing beam measurements, as described in connection with 848. In some examples, the power saving mode can include setting the MT component to an RRC inactive mode or to an RRC idle mode, as described in connection with 838. Figure 8 Figure 8 Figure 8 Figure 8 Figure 8 ​​​​​​

[0154] Figure 13 1300 is a flow chart of a wireless communication method. The method may be performed by a control node (e.g., Figure 1 Base stations 102, 180, Figure 1 IAB node 103, Figure 4 Control node 404, Figure 8 Control node 802 and / or Figure 14 The method may facilitate improved power saving at the relay and / or reduced signaling overhead of the control node based on signaling from the control node.

[0155] In one aspect, the repeater comprises an analog repeater configured to receive, amplify, and retransmit signals between a first wireless device and a second wireless device.

[0156] At 1302, the control node establishes a control link with the relay, such as in conjunction with Figure 8 In some examples, the control node may be Figure 7 The control link is established during the initial access 712 of the outbound protocol 710 of the relay. In some examples, the control node may transmit control signaling to the relay on the control link using the same frequency as the communications forwarded by the relay. In some examples, the control node may transmit control signaling to the relay on the control link using a different frequency than the communications forwarded by the relay. In another aspect, the control node may be one of a plurality of nodes communicating with the relay. Establishing the control link with the relay at 1302 may be performed by Figure 14 The establishment component 1440 of the device 1402 is executed.

[0157] At 1304, the control node transmits, via a control link, a configuration of one or more parameters of a relay to forward communications between a first wireless device and a second wireless device, such as in conjunction with Figure 7 RU configuration 718 and / or Figure 8 The configuration of the repeater 814 described above. The configuration of transmitting one or more parameters at 1304 can be performed by Figure 14 The configuration component 1442 of the device 1402 is executed.

[0158] In some examples, one or more parameters may include a beamforming configuration, such as Figure 8 Beamforming configuration 816. In some examples, one or more parameters may include a TDD mode, such as Figure 8 TDD mode 818. In some examples, one or more parameters may include a transmit power configuration, such as Figure 8 The transmit power configuration 820. In some examples, one or more parameters may include a bandwidth configuration, such as Figure 8bandwidth configuration 822. In some examples, the one or more parameters can include a power saving configuration, such as Figure 8 a power saving configuration 824.

[0159] In some examples, the configuration can include a periodic configuration of the one or more parameters for at least one of the first link between the relay and the first wireless device or the second link between the relay and the second wireless device. In some examples, the configuration includes a semi-static configuration of the one or more parameters, and wherein the relay applies the semi-static configuration for a time period.

[0160] In one aspect, the first wireless device is a base station, a user equipment, an additional relay, or an IAB node. In another aspect, the second wireless device is a base station, a user equipment, an additional relay, or an IAB node.

[0161] At 1308, the control node transmits, to the relay, an indication for the MT component of the relay to enter a power saving mode, as described in connection with Figure 8 power saving indication 834. The transmission of the indication at 1308 can be performed by Figure 14 an indication component 1444 of the device 1402.

[0162] In some examples, the power saving mode can include reducing monitoring for control, as described in connection with Figure 8 840. In some examples, the power saving mode can include monitoring for a wake-up signal, as described in connection with wake-up signal 842. In some examples, the power saving mode can include skipping monitoring for control signals for a time duration, as described in connection with Figure 8 844. In some examples, the power saving mode can include using a configured random access resource or a configured scheduling request resource to initiate control communications with the control node on the control link, as described in connection with Figure 8 846. In some examples, the power saving mode can include reducing reference signal measurements and / or reducing beam measurements, as described in connection with Figure 8 848. In some examples, the power saving mode can include setting the MT component to an RRC inactive mode or to an RRC idle mode, as described in connection with Figure 8 838.

[0163] In some examples, the control node can transmit the indication based on a request from the relay. For example, 1306, the control node can receive a request from the relay to enter a power saving mode, as described in connection with Figure 8described above in connection with the power saving request 832. In some examples, the control node can transmit an indication based on the request from the relay (e.g., at 1308). The reception of the request to enter the power saving mode at 1306 can be performed by Figure 14 request component 1446 of the device 1402.

[0164] Figure 14 is a diagram 1400 illustrating an example of a hardware implementation for the device 1402. The device 1402 can be a control node. In some examples, the control node can be a base station or an IAB node. In some aspects, the device 1402 can include a baseband unit 1404. The baseband unit 1404 can communicate with the relay 107 through a cellular RF transceiver 1422. The baseband unit 1404 can include a computer- readable medium / memory. The baseband unit 1404 is responsible for the general processing of

[0165] the communication manager 1432. The components within the communication manager 1432 can be stored in the computer-readable medium / memory and / or configured as hardware within the baseband unit 1404. The baseband unit 1404 can be a component of the base station 310 and can include the memory 376 and / or at least one of the TX processor 316, the RX processor 370, and the controller / processor 375. Figure 12 the communication manager 1432. The components within the communication manager 1432 can be stored in the computer-readable medium / memory and / or configured as hardware within the baseband unit 1404. The baseband unit 1404 can be a component of the base station 310 and can include the memory 376 and / or at least one of the TX processor 316, the RX processor 370, and the controller / processor 375. Figure 13 the communication manager 1432. The components within the communication manager 1432 can be stored in the computer-readable medium / memory and / or configured as hardware within the baseband unit 1404. The baseband unit 1404 can be a component of the base station 310 and can include the memory 376 and / or at least one of the TX processor 316, the RX processor 370, and the controller / processor 375.

[0166] the communication manager 1432. The components within the communication manager 1432 can be stored in the computer-readable medium / memory and / or configured as hardware within the baseband unit 1404. The baseband unit 1404 can be a component of the base station 310 and can include the memory 376 and / or at least one of the TX processor 316, the RX processor 370, and the controller / processor 375. Figure 12 the communication manager 1432. The components within the communication manager 1432 can be stored in the computer-readable medium / memory and / or configured as hardware within the baseband unit 1404. The baseband unit 1404 can be a component of the base station 310 and can include the memory 376 and / or at least one of the TX processor 316, the RX processor 370, and the controller / processor 375. Figure 13 the communication manager 1432. The components within the communication manager 1432 can be stored in the computer-readable medium / memory and / or configured as hardware within the baseband unit 1404. The baseband unit 1404 can be a component of the base station 310 and can include the memory 376 and / or at least one of the TX processor 316, the RX processor 370, and the controller / processor 375.

[0167] the communication manager 1432. The components within the communication manager 1432 can be stored in the computer-readable medium / memory and / or configured as hardware within the baseband unit 1404. The baseband unit 1404 can be a component of the base station 310 and can include the memory 376 and / or at least one of the TX processor 316, the RX processor 370, and the controller / processor 375. Figure 12 the communication manager 1432. The components within the communication manager 1432 can be stored in the computer-readable medium / memory and / or configured as hardware within the baseband unit 1404. The baseband unit 1404 can be a component of the base station 310 and can include the memory 376 and / or at least one of the TX processor 316, the RX processor 370, and the controller / processor 375. Figure 13 the communication manager 1432. The components within the communication manager 1432 can be stored in the computer-readable medium / memory and / or configured as hardware within the baseband unit 1404. The baseband unit 1404 can be a component of the base station 310 and can include the memory 376 and / or at least one of the TX processor 316, the RX processor 370, and the controller / processor 375.

[0168] The communications manager 1432 also includes a request component 1446 that is configured to receive a request from a relay to enter a power save mode, where the control node transmits the indication based on the request from the relay, e.g., as described in connection with 1306 of FIG. 13. Figure 13

[0169] The apparatus can include additional components that perform each of the blocks of the algorithm in the flowchart of FIG. 13. As such, each block in the flowchart of FIG. 13 can be performed by a component and the apparatus can include one or more of those components. The components can be one or more hardware components specifically configured to carry out the stated processes / algorithm, implemented by a processor configured to perform the Figure 12 and / or Figure 13 the flowchart of FIG. 13 can be performed by a component and the apparatus can include one or more of those components. The components can be one or more hardware components specifically configured to carry out the stated processes / algorithm, implemented by a processor configured to perform the Figure 12 and / or Figure 13 the flowchart of FIG. 13 can be performed by a component and the apparatus can include one or more of those components. The components can be one or more hardware components specifically configured to carry out the stated processes / algorithm, implemented by a processor configured to perform the

[0170] As shown, the apparatus 1402 can include various components for various functions as described in connection with FIG. 13. In one configuration, the apparatus 1402, and in particular the cellular baseband processor 1404, includes means for establishing a control link with a relay. The example apparatus 1402 also includes means for transmitting, via the control link, a configuration of one or more parameters of the relay to forward communications between a first wireless device and a second wireless device. The example apparatus 1402 also includes means for transmitting, to the relay, an indication for an MT component to enter a power save mode.

[0171] In another configuration, the example apparatus 1402 also includes means for receiving a request from a relay to enter a power save mode, where the control node transmits the indication based on the request from the relay.

[0172] The means can be one or more of the components of the apparatus 1402 configured to perform the functions recited by the means. As described supra, the apparatus 1402 can include the TX processor 316, the RX processor 370, and the controller / processor 375. As such, in one configuration, the means can be the TX processor 316, the RX processor 370, and the controller / processor 375 configured to perform the functions recited by the means.

[0173] Aspects disclosed herein provide techniques for improving power saving at a relay and / or reducing signaling overhead of a control node based on signaling from the control node. For example, aspects disclosed herein provide techniques that can enable dynamic control signaling reduction between a control node and a relay to provide power saving of an MT of the relay and lower signaling overhead of the control node.

[0174] ​It should be understood that the specific order or hierarchy of various blocks disclosed in the disclosed processes / flowcharts is an illustration of exemplary approaches. Based upon design preferences, it is understood that the specific order or hierarchy of various blocks can be re-arranged. Further, some blocks can be combined or omitted. The accompanying method claims present elements of the various blocks in a sample order, and are not meant to be limited to the specific order or hierarchy presented.

[0175] The previous 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 readily apparent to those skilled in the art, and the generic principles defined herein can be applied to other aspects. Thus, the claims are not intended to be limited to the aspects shown herein, but is to be accorded the full scope consistent with the language claims, wherein reference to an element in the singular is not intended to mean "one and only one" unless specifically so stated, but rather "one or more." Terms such as "if', "when', "where", "why", and the like can be read as "under the condition that', rather than conceiving of an implicit boolean condition from a stated time or event in past context. That is, a phrase should not be read as implying a temporal or chronological relationship. For example, "when X happens" does not imply that there is a temporal relationship during which "X" manifests, but rather that "X" manifest at some time closer in time than the alternative. The word "exemplary" is used herein to mean "serving as an example, instance, or illustration." Any aspect described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other aspects. Unless specifically stated otherwise, 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 the group consisting of A, B, and C", "one or more of the group consisting of A, B, and C", and the like encompasses the selection of one or more of the items in the group or items from about two to about twenty, as well as the selection of item A only, or the selection of item A and item B only, or the selection of item A and item C only, or the selection of item B only, or the selection of item B and item C only, or the selection of item C only, or the selection of items A, B, and C, or the selection of items A, B, and 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 the group consisting of A, B, and C", "one or more of the group consisting of A, B, and C", and the like encompasses the selection of A only, or the selection of B only, or the selection of C only, or the selection of A and B but not C, or the selection of A and C but not B, or the selection of B and C but not A, or the selection of A and B and C. The elements of the various aspects described throughout this disclosure are intended to be all structural and functional equivalents of each other. Additionally, although the disclosure has been described in language specific to structural features, it is to be understood that the

[0176] The following aspects are illustrative only and can be combined with other aspects or teachings described herein without limiting.

[0177] Aspect 1 is a method of wireless communication at a relay, comprising: establishing a control link with a control node; receiving, via the control link, a configuration of one or more parameters of the relay to forward communications between a first wireless device and a second wireless device; transitioning an MT component of the relay to a power saving mode for at least a time period after receiving the configuration; and forwarding the communications between the first wireless device and the second wireless device based on the one or more parameters in the configuration.

[0178] Aspect 2 is the method of Aspect 1, further comprising: the one or more parameters comprising at least one of: a beamforming configuration, a TDD pattern, a transmit power configuration, a bandwidth configuration, or a power saving configuration.

[0179] Aspect 3 is the method of any of Aspects 1 and 2, further comprising: the configuration comprising a periodic configuration of the one or more parameters for at least one of a first link between the relay and the first wireless device or a second link between the relay and the second wireless device.

[0180] Aspect 4 is the method of any of Aspects 1 and 2, further comprising: the configuration comprising a semi-static configuration of the one or more parameters, and wherein the relay applies the semi-static configuration for a time period.

[0181] Aspect 5 is the method of any of Aspects 1-4, further comprising: the MT component receiving the configuration from the control node via the control link, the method further comprising: receiving an indication from the control node to enter the MT component into the power saving mode, wherein the relay transitions the MT component to the power saving mode based on the indication from the control node.

[0182] Aspect 6 is the method of any of Aspects 1-5, further comprising: the relay comprising an RU component that forwards the communications between the first wireless device and the second wireless device while the MT component is in the power saving mode.

[0183] Aspect 7 is the method of any of Aspects 1-6, further comprising: the power saving mode comprising one or more of: reducing monitoring for control signals, monitoring for a wake-up signal, skipping monitoring for the control signals for a time duration, using a configured random access resource to initiate control communications with the control node on the control link, using a configured scheduling request resource to initiate the control communications with the control node on the control link, reducing reference signal measurements, reducing beam measurements, setting the MT component to an RRC inactive mode, or setting the MT component to an RRC idle mode.

[0184] Aspect 8 is the method of any of aspects 1-7, further comprising: transmitting, to the control node, a request to enter the power saving mode prior to receiving the indication from the control node.

[0185] Aspect 9 is the method of any of aspects 1-8, further comprising: the relay receiving control signaling on the control link using a same frequency as the communication that the relay forwards.

[0186] Aspect 10 is the method of any of aspects 1-8, further comprising: the relay receiving control signaling on the control link using a different frequency than the communication that the relay forwards.

[0187] Aspect 11 is the method of any of aspects 1-10, further comprising: the control node being one of a plurality of nodes in communication with the relay.

[0188] Aspect 12 is the method of any of aspects 1-11, further comprising: the first wireless device being a base station, a user equipment, an additional relay, or an IAB node.

[0189] Aspect 13 is the method of any of aspects 1-12, further comprising: the second wireless device being a base station, a user equipment, an additional relay, or an IAB node.

[0190] Aspect 14 is the method of any of aspects 1-13, further comprising: the MT component receiving control signaling from the control node using the control link.

[0191] Aspect 15 is the method of any of aspects 1-14, further comprising: the relay comprising an analog relay configured to receive, amplify, and forward signals between the first wireless device and the second wireless device.

[0192] Aspect 16 is an apparatus for wireless communication including at least one processor coupled to a memory and configured to implement any of aspects 1-15.

[0193] Aspect 17 is an apparatus for wireless communication including means for implementing any of aspects 1-15.

[0194] Aspect 18 is a non-transitory computer-readable storage medium storing computer- executable code, where the code, when executed by a processor, causes the processor to implement any of aspects 1-15.

[0195] Aspect 19 is a method of wireless communication at a control node, comprising: establishing a control link with a relay; transmitting, via the control link, a configuration of one or more parameters of the relay to forward communications between a first wireless device and a second wireless device; and transmitting, to the relay, an indication for an MT component to enter a power saving mode.

[0196] Aspect 20 is the method of Aspect 19, further comprising: the one or more parameters comprising at least one of: a beamforming configuration, a TDD pattern, a transmit power configuration, a bandwidth configuration, or a power saving configuration.

[0197] Aspect 21 is the method of any of Aspects 19 and 20, further comprising: the control node transmitting a periodic configuration of the one or more parameters for at least one of a first link between the relay and the first wireless device or a second link between the relay and the second wireless device.

[0198] Aspect 22 is the method of any of Aspects 19 and 20, further comprising: the control node transmitting a semi-static configuration of the one or more parameters.

[0199] Aspect 23 is the method of any of Aspects 19 to 22, further comprising: the power saving mode comprising one or more of: reducing monitoring for control signals, monitoring for a wake-up signal, skipping monitoring for the control signals for a time duration, using a configured random access resource to initiate control communications with the control node on the control link, using a configured scheduling request resource to initiate the control communications with the control node on the control link, reducing reference signal measurements, reducing beam measurements, setting the MT component to an RRC inactive mode, or setting the MT component to an RRC idle mode.

[0200] Aspect 24 is the method of any of Aspects 19 to 23, further comprising: receiving, from the relay, a request to enter the power saving mode, wherein the control node transmits the indication based on the request from the relay.

[0201] Aspect 25 is the method of any of Aspects 19 to 24, further comprising: the control node transmitting control signaling to the relay on the control link using a same frequency as the communications forwarded by the relay.

[0202] Aspect 26 is the method of any of Aspects 19 to 24, further comprising: the control node transmitting control signaling to the relay on the control link using a different frequency than the communications forwarded by the relay.

[0203] Aspect 27 is the method of any of Aspects 19 to 26, further comprising: the control node being one of a plurality of nodes in communication with the relay.

[0204] Aspect 28 is the method of any of aspects 19 through 27, further comprising: the first wireless device is a base station, a user equipment, an additional relay, or an IAB node.

[0205] Aspect 29 is the method of any of aspects 19 through 28, further comprising: the second wireless device is a base station, a user equipment, an additional relay, or an IAB node.

[0206] Aspect 30 is an apparatus for wireless communication including at least one processor coupled to a memory and configured to implement any of aspects 19 through 29.

[0207] Aspect 31 is an apparatus for wireless communication including means for implementing any of aspects 19 through 29.

[0208] Aspect 32 is a non-transitory computer-readable storage medium storing computer- executable code, where the code, when executed by a processor, causes the processor to implement any of aspects 19 through 29.

Claims

1. An apparatus for wireless communication at a repeater, comprising: Memory; as well as at least one processor coupled to the memory, the at least one processor configured to: The mobile terminal MT component of the repeater establishes a control link with the control node; receiving, via the control link, a configuration of one or more parameters of a repeating unit (RU) component of the relay to forward communications between a first wireless device and a second wireless device on an access link; transitioning the MT component to a power save mode for at least a period of time after receiving the configuration, wherein the MT component is configured to perform reduced monitoring of the control link during the power save mode; as well as The communication between the first wireless device and the second wireless device is forwarded over the access link via the RU component based on the one or more parameters in the configuration while the MT component of the relay is in the power save mode.

2. The device according to claim 1, wherein The one or more parameters include at least one of the following: Beamforming configuration, Time Division Duplex TDD mode, Transmit power configuration, Bandwidth configuration, or Power saving configuration.

3. The apparatus of claim 1 , wherein the configuration comprises periodic configuration of the one or more parameters for at least one of a first link between the relay and the first wireless device or a second link between the relay and the second wireless device. 4 . The apparatus of claim 1 , wherein the configuration comprises a semi-static configuration of the one or more parameters, and wherein the at least one processor is configured to apply the semi-static configuration for the time period.

5. The apparatus of claim 1 , wherein the MT component receives the configuration from the control node via the control link, the at least one processor being further configured to: receiving an instruction from the control node to cause the MT component to enter the power saving mode, and The MT component is transitioned to the power save mode based on the indication from the control node.

6. The apparatus of claim 5 , wherein the at least one processor is configured to perform at least one of the following: Reduce monitoring of control signals, Monitor wake-up signals, skipping monitoring of the control signal for a duration of time, Initiating control communication with the control node on the control link using the configured random access resources, initiating the control communication with the control node on the control link using the configured scheduling request resources, Reduce reference signal measurements, Reduced beam measurements, Setting the MT component to a Radio Resource Control (RRC) inactive mode, or The MT component is set to RRC idle mode.

7. The apparatus of claim 5 , wherein the at least one processor is further configured to: Prior to receiving the indication from the control node, a request to enter the power save mode is transmitted to the control node.

8. The apparatus of claim 1 , wherein the at least one processor is configured to: Control signaling is received on the control link using the same frequency as the communications forwarded by the repeater.

9. The apparatus of claim 1 , wherein the at least one processor is configured to: Signaling is received on the control link using a different frequency than the communications forwarded by the repeater.

10. The apparatus of claim 1, wherein the control node is one of a plurality of nodes in communication with the relay.

11. The apparatus of claim 1, wherein the first wireless device is a base station, a user equipment, an additional relay, or an integrated access and backhaul (IAB) node.

12. The apparatus of claim 1, wherein the second wireless device is a base station, a user equipment, an additional relay, or an integrated access and backhaul (IAB) node.

13. The apparatus of claim 1, further comprising a transceiver coupled to the at least one processor.

14. The apparatus of claim 1, wherein the repeater comprises the MT component and a receiving unit, and the receiving unit forwards the communication between the first wireless device and the second wireless device when the MT component of the repeater is in the power saving mode.

15. The apparatus of claim 14, wherein the MT component receives control signaling and the receiving unit forwards the communication between the first wireless device and the second wireless device based on the control signaling.

16. A method for wireless communication at a repeater, comprising: The mobile terminal MT component of the repeater establishes a control link with the control node; receiving, via the control link, a configuration of one or more parameters of a repeating unit (RU) component of the relay to forward communications between a first wireless device and a second wireless device on an access link; transitioning the MT component to a power save mode for at least a period of time after receiving the configuration, wherein the MT component is configured to perform reduced monitoring of the control link during the power save mode; as well as The communication between the first wireless device and the second wireless device is forwarded over the access link via the RU component based on the one or more parameters in the configuration while the MT component of the relay is in the power save mode.

17. The method of claim 16, wherein the MT component receives the configuration from the control node via the control link, the method further comprising: An indication is received from the control node to cause the MT component to enter the power save mode, wherein the relay transitions the MT component to the power save mode based on the indication from the control node.

18. The method of claim 17, wherein the power saving mode comprises one or more of: Reduce monitoring of control signals, Monitor wake-up signals, skipping monitoring of the control signal for a duration of time, Initiating control communication with the control node on the control link using the configured random access resources, initiating the control communication with the control node on the control link using the configured scheduling request resources, Reduce reference signal measurements, Reduced beam measurements, Setting the MT component to a Radio Resource Control (RRC) inactive mode, or The MT component is set to RRC idle mode.

19. The method of claim 17, further comprising: Prior to receiving the indication from the control node, a request to enter the power save mode is transmitted to the control node.

20. The method of claim 16, wherein the repeater comprises the MT component and a receiving unit, and the receiving unit forwards the communication between the first wireless device and the second wireless device when the MT component of the repeater is in the power saving mode.

21. An apparatus for wireless communication at a control node, comprising: Memory; as well as at least one processor coupled to the memory, the at least one processor configured to: Establishing a control link with a repeater, wherein the repeater includes a mobile terminal MT component and a repeating unit RU component; transmitting, via the control link, configuration of one or more parameters of the RU component of the relay to forward communications between a first wireless device and a second wireless device over an access link; as well as An indication is transmitted to the repeater causing the MT component of the repeater to enter a power saving mode when the RU component forwards the communication between the first wireless device and the second device based on the configuration, wherein the MT component is configured to perform reduced monitoring of the control link during the power saving mode.

22. The apparatus of claim 21 , wherein the one or more parameters include at least one of: Beamforming configuration, Time Division Duplex TDD mode, Transmit power configuration, Bandwidth configuration, or Power saving configuration.

23. The apparatus of claim 21 , wherein the at least one processor is configured to: A periodic configuration of the one or more parameters for at least one of a first link between the relay and the first wireless device or a second link between the relay and the second wireless device is transmitted.

24. The apparatus of claim 21 , wherein the at least one processor is configured to: A semi-static configuration of the one or more parameters is transmitted.

25. The apparatus of claim 21 , wherein the at least one processor is configured to perform at least one of: Reduce monitoring of control signals, Monitor wake-up signals, skipping monitoring of the control signal for a duration of time, Initiating control communication with the control node on the control link using the configured random access resources, initiating the control communication with the control node on the control link using the configured scheduling request resources, Reduce reference signal measurements, Reduced beam measurements, Setting the MT component to a Radio Resource Control (RRC) inactive mode, or The MT component is set to RRC idle mode.

26. The apparatus of claim 21 , wherein the at least one processor is further configured to: A request to enter the power save mode is received from the relay, wherein the control node transmits the indication based on the request from the relay.

27. The apparatus of claim 21 , wherein the at least one processor is configured to: Control signaling is transmitted to the repeater on the control link using the same frequency as the communications forwarded by the repeater.

28. The apparatus of claim 21 , wherein the at least one processor is configured to: Control signaling is transmitted to the repeater on the control link using a different frequency than the communications forwarded by the repeater.

29. The apparatus of claim 21, wherein the control node is one of a plurality of nodes in communication with the relay.

30. The apparatus of claim 21, further comprising a transceiver coupled to the at least one processor.

31. A method for wireless communication at a control node, comprising: Establishing a control link with a repeater, wherein the repeater includes a mobile terminal MT component and a repeating unit RU component; transmitting, via the control link, configuration of one or more parameters of the RU component of the relay to forward communications between a first wireless device and a second wireless device over an access link; as well as An indication is transmitted to the repeater causing the MT component of the repeater to enter a power save mode when the RU component forwards the communication between the first wireless device and the second wireless device based on the configuration, wherein the MT component is configured to perform reduced monitoring of the control link during the power save mode.

32. The method of claim 31 , wherein the one or more parameters include at least one of: Beamforming configuration, Time Division Duplex TDD mode, Transmit power configuration, Bandwidth configuration, or Power saving configuration.

33. The method of claim 31 , further comprising: A periodic configuration of the one or more parameters for at least one of a first link between the relay and the first wireless device or a second link between the relay and the second wireless device is transmitted.

34. The method of claim 31 , further comprising: A semi-static configuration of the one or more parameters is transmitted.

35. The method of claim 31 , wherein the power saving mode comprises at least one of: Reduce monitoring of control signals, Monitor wake-up signals, skipping monitoring of the control signal for a duration of time, Initiating control communication with the control node on the control link using the configured random access resources, initiating the control communication with the control node on the control link using the configured scheduling request resources, Reduce reference signal measurements, Reduced beam measurements, Setting the MT component to a Radio Resource Control (RRC) inactive mode, or The MT component is set to RRC idle mode.

36. The method of claim 31 , further comprising: A request to enter the power save mode is received from the relay, wherein the control node transmits the indication based on the request from the relay.

37. The method of claim 31 , further comprising: Control signaling is transmitted to the repeater on the control link using the same frequency as the communications forwarded by the repeater.

38. The method of claim 31 , further comprising: Control signaling is transmitted to the repeater on the control link using a different frequency than the communications forwarded by the repeater.

39. The method of claim 31 , wherein the control node is one of a plurality of nodes in communication with the relay.

40. An apparatus for wireless communication at a repeater, comprising: means for establishing a control link between the mobile terminal MT component of the relay and the control node; means for receiving, via the control link, a configuration of one or more parameters of a repeating unit (RU) component of the relay to forward communications between a first wireless device and a second wireless device on an access link; means for transitioning the MT component to a power save mode for at least a period of time after receiving the configuration, wherein the MT component is configured to perform reduced monitoring of the control link during the power save mode; as well as Means for forwarding the communication between the first wireless device and the second wireless device over the access link via the RU component based on the one or more parameters in the configuration when the MT component of the relay is in the power save mode.

41. The apparatus of claim 40, further comprising means for performing the method of any one of claims 17 to 20.

42. An apparatus for wireless communication at a control node, comprising: Means for establishing a control link with a repeater, the repeater comprising a mobile terminal MT component and a repeating unit RU component; means for transmitting, via the control link, a configuration of one or more parameters of the RU component of the relay to forward communications between a first wireless device and a second wireless device over an access link; as well as means for transmitting an indication to the repeater causing the MT component of the repeater to enter a power save mode when the RU component forwards the communication between the first wireless device and the second wireless device based on the configuration, wherein the MT component is configured to perform reduced monitoring of the control link during the power save mode.

43. The apparatus of claim 42, further comprising means for performing the method of any one of claims 32 to 39.

44. A non-transitory computer-readable medium having stored thereon instructions executable by one or more processors of a repeater to: The mobile terminal MT component of the repeater establishes a control link with the control node; receiving, via the control link, a configuration of one or more parameters of a repeating unit (RU) component of the relay to forward communications between a first wireless device and a second wireless device on an access link; transitioning the MT component to a power save mode for at least a period of time after receiving the configuration, wherein the MT component is configured to perform reduced monitoring of the control link during the power save mode; as well as The communication between the first wireless device and the second wireless device is forwarded over the access link via the RU component based on the one or more parameters in the configuration while the MT component of the relay is in the power save mode.

45. The non-transitory computer-readable medium of claim 44, wherein the instructions are further executable by the one or more processors to perform the method of any one of claims 17 to 20.

46. ​​A non-transitory computer-readable medium storing instructions executable by one or more processors of a control node to: Establishing a control link with a repeater, wherein the repeater includes a mobile terminal MT component and a repeating unit RU component; transmitting, via the control link, configuration of one or more parameters of the RU component of the relay to forward communications between a first wireless device and a second wireless device over an access link; and An indication is transmitted to the repeater causing the MT component of the repeater to enter a power save mode when the RU component forwards the communication between the first wireless device and the second wireless device based on the configuration, wherein the MT component is configured to perform reduced monitoring of the control link during the power save mode.

47. The non-transitory computer readable medium of claim 46, wherein the instructions are further executable by the one or more processors to perform the method of any one of claims 32 to 39.

48. An apparatus for wireless communication at a repeater, comprising: Memory; as well as at least one processor coupled to the memory, the at least one processor configured to: The mobile terminal MT component of the repeater establishes a control link with the control node; receiving, via the control link, a configuration of a repeating unit (RU) component of the repeater to forward communications between a first wireless device and a second wireless device on an access link; transitioning the MT component to a radio resource control (RRC) inactive mode or an RRC idle mode for at least a period of time after receiving the configuration; as well as The communication between the first wireless device and the second wireless device is forwarded over the access link via the RU component based on the configuration when the MT component of the relay is in the RRC inactive mode or the RRC idle mode.

49. The apparatus of claim 48, wherein the MT component is configured to perform reduced monitoring of the control link during the RRC inactive mode or the RRC idle mode.

50. The apparatus of claim 48, wherein the configuration comprises at least one of: Beamforming configuration, Time Division Duplex TDD mode, Transmit power configuration, Bandwidth configuration, or Power saving configuration.

51. The apparatus of claim 48, wherein the configuration comprises a periodic configuration for at least one of a first link between the repeater and the first wireless device or a second link between the repeater and the second wireless device.

52. The apparatus of claim 48, wherein the configuration comprises a semi-static configuration, and wherein the at least one processor is configured to apply the semi-static configuration for the time period.

53. The apparatus of claim 48, wherein the MT component receives the configuration from the control node via the control link, and the at least one processor is further configured to: receiving an instruction from the control node to cause the MT component to enter the RRC inactive mode or the RRC idle mode, and The MT component is transitioned to the RRC inactive mode or the RRC idle mode based on the indication from the control node.

54. The apparatus of claim 53, wherein to facilitate the RRC inactive mode or the RRC idle mode, the at least one processor is configured to at least one of: Reduce monitoring of control signals, Monitor wake-up signals, skipping monitoring of the control signal for a duration of time, Initiating control communication with the control node on the control link using the configured random access resources, initiating the control communication with the control node on the control link using the configured scheduling request resources, Reduce reference signal measurements, Reduced beam measurements, Setting the MT component to the RRC inactive mode, or The MT component is set to the RRC idle mode.

55. The apparatus of claim 53, wherein the at least one processor is further configured to: Prior to receiving the indication from the control node, a request to enter the RRC inactive mode or the RRC idle mode is transmitted to the control node.

56. The apparatus of claim 48, wherein the at least one processor is configured to: Control signaling is received on the control link using the same frequency as the communications forwarded by the repeater.

57. The apparatus of claim 48, wherein the at least one processor is configured to: Signaling is received on the control link using a different frequency than the communications forwarded by the repeater.

58. The apparatus of claim 48, wherein the control node is one of a plurality of nodes in communication with the relay.

59. The apparatus of claim 48, wherein the first wireless device is a base station, a user equipment, an additional relay, or an integrated access and backhaul (IAB) node.

60. The apparatus of claim 48, wherein the second wireless device is a base station, a user equipment, an additional relay, or an integrated access and backhaul (IAB) node.

61. The apparatus of claim 48, further comprising a transceiver coupled to the at least one processor.

62. The apparatus of claim 48, wherein the relay comprises the MT component and a receiving unit, and the receiving unit forwards the communication between the first wireless device and the second wireless device when the MT component of the relay is in the RRC inactive mode or the RRC idle mode.

63. The apparatus of claim 62, wherein: The MT component receives control signaling and the receiving unit forwards the communication between the first wireless device and the second wireless device based on the control signaling.

64. A method for wireless communication at a repeater, comprising: The mobile terminal MT component of the repeater establishes a control link with the control node; receiving, via the control link, a configuration of a repeating unit (RU) component of the repeater to forward communications between a first wireless device and a second wireless device on an access link; transitioning the MT component to a radio resource control (RRC) inactive mode or an RRC idle mode for at least a period of time after receiving the configuration; as well as The communication between the first wireless device and the second wireless device is forwarded over the access link via the RU component based on the configuration when the MT component of the relay is in the RRC inactive mode or the RRC idle mode.

65. The method of claim 64, wherein the MT component is configured to perform reduced monitoring of the control link during the RRC inactive mode or the RRC idle mode.

66. The method of claim 64, wherein the MT component receives the configuration from the control node via the control link, the method further comprising: An indication is received from the control node to cause the MT component to enter the RRC inactive mode or the RRC idle mode, wherein the relay transitions the MT component to the RRC inactive mode or the RRC idle mode based on the indication from the control node.

67. A non-transitory computer-readable storage medium having computer-executable code stored thereon, wherein the code, when executed, causes a processor to implement a method comprising: The mobile terminal MT component of the repeater establishes a control link with the control node; receiving, via the control link, a configuration of a repeating unit (RU) component of the repeater to forward communications between a first wireless device and a second wireless device on an access link; transitioning the MT component to a radio resource control (RRC) inactive mode or an RRC idle mode for at least a period of time after receiving the configuration; as well as The communication between the first wireless device and the second wireless device is forwarded over the access link via the RU component based on the configuration when the MT component of the relay is in the RRC inactive mode or the RRC idle mode.

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