Technology for coordinating and scheduling wireless communications using repeaters

Abstract

Various aspects described herein relate to receiving one or more transmitted downlink beams from a serving base station at a repeater, receiving one or more transmitted uplink beams at the repeater from a downstream node served by the serving base station, and transmitting to the serving base station one or more parameters related to determining a channel quality metric using at least the one or more transmitted downlink beams and the one or more transmitted uplink beams.

Description

[0001] Priority claim under 35 USC § 119

[0002] This patent application claims priority to non-provisional application No. 16 / 777,615, filed on January 30, 2020, entitled “TECHNIQUES FOR COORDINATINGSCHEDULING WIRELESS COMMUNICATIONS USING A REPEATER,” which is assigned to the assignee of the present application and is hereby expressly incorporated herein by reference.

[0003] background

[0004] Aspects of the present disclosure relate generally to wireless communication systems, and more particularly to wireless communication using a relay between a base station and a downstream node.

[0005] Wireless communication systems are widely deployed to provide various types of communication content, such as voice, video, packet data, messaging, broadcast, etc. These systems may be multiple-access systems capable of supporting communication with multiple users by sharing available system resources (e.g., time, frequency, and power). Examples of such multiple-access systems include code division multiple access (CDMA) systems, time division multiple access (TDMA) systems, frequency division multiple access (FDMA) systems, orthogonal frequency division multiple access (OFDMA) systems, and single-carrier frequency division multiple access (SC-FDMA) systems.

[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. For example, the fifth generation (5G) wireless communication technology, which may be referred to as 5G New Radio (5G NR), is designed to expand and support diverse usage scenarios and applications relative to current mobile network generations. In one aspect, 5G communication technologies may include: enhanced mobile broadband for human-centric use cases for accessing multimedia content, services, and data; ultra-reliable low latency communications (URLLC) with certain specifications regarding latency and reliability; and massive machine type communications, which may allow very large numbers of connected devices and the transmission of relatively small amounts of non-delay-sensitive information.

[0007] In wireless communication technologies (such as 5G NR), nodes can beamform antenna resources to transmit and receive beams in certain spatial directions, thereby improving signal audibility. Additionally, relays can be used between nodes to receive and forward communications between them, further improving signal audibility and improving communication quality between nodes. Several types of relays can be used for wireless communication (e.g., in 5G NR), including: a first type of relay, which is not controlled by the gNB, has fixed beamforming, amplify-and-forward functionality, and full-duplex capability (referred to herein as "Class A relays"); a second type of relay, which is controlled to some extent by the gNB (such as for beamforming and uplink / downlink directions), has amplify-and-forward functionality, and full-duplex capability (referred to herein as "Class B relays"); and a third type of relay, which may be more controlled by the gNB, has decode-and-forward functionality, and may have half-duplex constraints (referred to herein as "Class C relays," which may, for example, include integrated access and backhaul nodes).

[0008] Overview

[0009] The following is a brief summary of one or more aspects to provide a basic understanding of such aspects. This summary is not an exhaustive overview of all conceivable aspects and is neither intended to identify key or critical elements of all aspects nor to define 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.

[0010] According to an example, a method for wireless communication is provided, the method comprising: receiving one or more transmitted downlink beams from a serving base station at a repeater, receiving one or more transmitted uplink beams from a downstream node served by the serving base station at the repeater, and transmitting one or more parameters related to determining a channel quality metric using at least the one or more transmitted downlink beams and the one or more transmitted uplink beams to the serving base station.

[0011] In another example, a method for wireless communication is provided, the method comprising: transmitting one or more transmitted downlink beams by a serving base station, receiving one or more parameters related to determining a channel quality metric using at least one of the one or more transmitted downlink beams and at least one of one or more transmitted uplink beams transmitted by a downstream node served by the serving base station from a repeater, determining the channel quality metric based at least in part on the one or more parameters, determining a configuration for communicating with the downstream node based at least in part on the channel quality metric, and communicating with the downstream node via the repeater based on the configuration.

[0012] In another aspect, an apparatus for wireless communication is provided, the apparatus comprising means for performing the operations of the methods described herein. In yet another aspect, a computer-readable medium comprising code executable by one or more processors to perform the operations of the methods described herein is provided.

[0013] To accomplish the foregoing and related ends, one or more aspects comprise the features hereinafter fully described and particularly pointed out in the claims. The following description and accompanying drawings set forth in detail certain illustrative features of the one or more aspects. However, these features are indicative of but a few of the various ways in which the principles of the various aspects may be employed, and this description is intended to encompass all such aspects and their equivalents. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The disclosed aspects will be described below with reference to the accompanying drawings, which are provided to illustrate rather than limit the disclosed aspects, wherein like reference numerals designate like elements, and wherein:

[0016] Figure 1 An example of a wireless communication system according to various aspects of the present disclosure is illustrated;

[0017] Figure 2 An example of a wireless communication system providing a relay for facilitating communications between a base station and user equipment is illustrated in accordance with various aspects of the present disclosure;

[0018] Figure 3 An example of a wireless communication system in which multiple nodes can beamform signals according to various aspects of the present disclosure is illustrated;

[0019] Figure 4 is a block diagram illustrating an example of a repeater according to various aspects of the present disclosure;

[0020] Figure 5 is a block diagram illustrating an example of a base station according to various aspects of the present disclosure;

[0021] Figure 6 is a flow chart illustrating an example of a method for providing information for determining a channel quality metric according to various aspects of the present disclosure;

[0022] Figure 7 is a flow chart illustrating an example of a method for scheduling communications based on a determined channel quality metric in accordance with various aspects of the present disclosure;

[0023] Figure 8 is a block diagram illustrating an example of a MIMO communication system including a base station and UEs according to various aspects of the present disclosure.

[0024] Detailed description

[0025] Now, various aspects will be described with reference to the accompanying drawings. In the following description, for the purpose of explanation, numerous specific details are set forth in order to provide a thorough understanding of one or more aspects. However, it is apparent that such aspects can be practiced without these specific details.

[0026] The described features generally involve configuring a repeater to report parameters related to channel quality to an upstream node (such as a base station) so that the upstream node can schedule communications to downstream nodes based on these parameters. In some wireless communication technologies (such as fifth generation (5G) New Radio (NR)), an amplify-and-forward repeater may be used, which may operate in full-duplex mode and be under some control of a base station or other upstream node (e.g., a Class B repeater, an upstream integrated access and backhaul (IAB) node, etc.). An IAB node may, for example, be a node having access node (AN) functionality (AN-F) (to facilitate transmission of downlink communications to or reception of uplink communications from one or more downstream nodes (e.g., one or more other IAB nodes, user equipment (UE), a repeater, etc.)) and UE functionality (UE-F) (to facilitate transmission of uplink communications to or reception of downlink communications from one or more upstream nodes (e.g., one or more other IAB nodes, a repeater, a base station, etc.).

[0027] In an example, an amplify-and-forward repeater can efficiently use available resources by operating in full-duplex, which can potentially increase system capacity compared to a decode-and-forward repeater, experience or exhibit less forwarding latency compared to a decode-and-forward repeater (e.g., no additional latency for further intermediate frequency (IF) / baseband (BB) processing, and no additional latency due to half-duplex operation), etc. However, an amplify-and-forward repeater can also amplify unwanted signals (e.g., noise and interference) along with the wanted signal, which can result in a reduced overall effective signal-to-interference-and-noise ratio (SINR).

[0028] In an example, a Class B repeater (which may also be referred to as a Layer 1 (L1) millimeter wave (MMW) repeater) may perform at least one or more of the following operations: receive an analog signal on its receive (RX) antenna (e.g., based on some configured RX beamforming), amplify the power of the received analog signal, transmit the amplified signal from its transmit (TX) antenna (e.g., based on some configured TX beamforming), and / or communicate certain control signals with an upstream node or server (e.g., a serving base station, a donor node, a control node, an IAB node, etc.) via a control interface, where the control interface may be out-of-band (e.g., using a different radio technology (such as Bluetooth) or a different frequency (such as a frequency used for Long Term Evolution (LTE) Narrowband (NB)-Internet of Things (IoT)), etc.) or in-band (e.g., using a bandwidth portion of the same carrier frequency used to receive and / or transmit the analog signal). When a Class B repeater is used, the effective signal-to-noise ratio (SNR) of a link between nodes using the repeater may be a function of the SNR on each link between each node and the repeater, as well as certain internal radio frequency (RF) parameters of the repeater.

[0029] Various aspects described herein relate to communicating at least some of these parameters by a repeater to a base station or other upstream node to facilitate determining the channel quality on each link between the base station, the repeater, and (or) downstream nodes, and accordingly scheduling communications based on the determined channel quality. For example, the repeater may report internal RF parameter values ​​to the base station and / or may report channel quality metrics measured by the repeater on signals received from the base station and / or from (or) downstream nodes. The base station may accordingly receive the parameter values, determine the channel quality, and schedule one or more aspects of the communication (e.g., modulation and coding scheme (MCS), transmit or receive beams, transmit or receive power, etc.) based on the channel quality. Scheduling based on these parameters may be an improvement over base station measurements, at least because base station measurements may require downstream nodes to transmit / receive signals using all multiple beams for each of the multiple beams transmitted / received by the base station, while measurements at the repeater may only require the base station to transmit using each of its beams and each downstream node to transmit using each of its beams to perform all measurements. Additionally, using the repeater to provide information may allow for more accurate consideration of the repeater's internal RF parameters.

[0030] The following will refer to Figure 1-8 The described features are presented in more detail.

[0031] As used in this application, the terms "component," "module," "system," and similar terms are intended to include computer-related entities such as, but not limited to, hardware, firmware, a combination of hardware and software, software, or software in execution. For example, a component can be, but is not limited to, a process running on a processor, a processor, an object, an executable, a thread of execution, a program, and / or a computer. As an illustration, both an application running on a computing device and the computing device can be components. One or more components can reside within a process and / or thread of execution, and components can be localized on a computer and / or distributed between two or more computers. In addition, these components can be executed from various computer-readable media having various data structures stored thereon. These components can communicate with the aid of local and / or remote processes, such as according to signals having one or more data packets, such as data from a component that interacts with a local system, another component in a distributed system, and / or interacts with other systems across a network such as the Internet via the signal.

[0032] The technology described herein can be used in various wireless communication systems, such as CDMA, TDMA, FDMA, OFDMA, SC-FDMA and other systems. The terms "system" and "network" are generally used interchangeably. A CDMA system can implement radio technologies such as CDMA2000 and Universal Terrestrial Radio Access (UTRA). CDMA2000 covers IS-2000, IS-95 and IS-856 standards. IS-2000 versions 0 and A are commonly referred to as CDMA2000 1X, 1X, etc. IS-856 (TIA-856) is commonly referred to as CDMA2000 1xEV-DO, High Rate Packet Data (HRPD), etc. UTRA includes Wideband CDMA (WCDMA) and other variants of CDMA. A TDMA system can implement radio technologies such as Global System for Mobile Communications (GSM). OFDMA systems can implement technologies such as Ultra Mobile Broadband (UMB), Evolved UTRA (E-UTRA), IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, Flash-OFDM TMetc. radio technologies. UTRA and E-UTRA are part of the Universal Mobile Telecommunications System (UMTS). 3GPP Long Term Evolution (LTE) and Advanced LTE (LTE-A) are new versions of UMTS that use E-UTRA. UTRA, E-UTRA, UMTS, LTE, LTE-A, and GSM are described in documents from an organization called the "3rd Generation Partnership Project" (3GPP). CDMA2000 and UMB are described in documents from an organization called the "3rd Generation Partnership Project 2" (3GPP2). The techniques described herein can be used for the systems and radio technologies mentioned above, as well as for other systems and radio technologies, including cellular (e.g., LTE) communications on shared radio frequency spectrum bands. However, the following description describes an LTE / LTE-A system for example purposes, and LTE terminology is used in most of the following description, but these techniques can also be applied beyond LTE / LTE-A applications (e.g., to fifth generation (5G) new radio (NR) networks or other next generation communication systems).

[0033] The following description provides examples and does not limit the scope, applicability, or examples set forth in the claims. Changes may be made to the function and arrangement of the elements discussed without departing from the scope of this disclosure. The various examples may omit, substitute, or add various procedures or components as appropriate. For example, the described methods may be performed in an order different from that described, and various steps may be added, omitted, or combined. In addition, features described with reference to some examples may be combined in other examples.

[0034] Various aspects or features will be presented in the form of systems that may include a number of devices, components, modules, and the like. It should be understood and appreciated that the various systems may include additional devices, components, modules, and the like, and / or may not include all of the devices, components, modules, and the like discussed in conjunction with the figures. Combinations of these approaches may also be used.

[0035] Figure 1 1 is a diagram illustrating an example of a wireless communication system and access network 100. The wireless communication system (also known as a wireless wide area network (WWAN)) may include a base station 102, a UE 104, an evolved packet core (EPC) 160, and / or a 5G core (5GC) 190. The base station 102 may include a macro cell (a high-power cellular base station) and / or a small cell (a low-power cellular base station). A macro cell may include a base station. A small cell may include a femto cell, a pico cell, and a micro cell.

[0036] Base stations 102 configured for 4G LTE (which may be collectively referred to as the Evolved Universal Mobile Telecommunications System (UMTS) Terrestrial Radio Access Network (E-UTRAN)) may interface with EPC 160 via a backhaul link 132 (e.g., using an S1 interface). Base stations 102 configured for 5G NR (which may be collectively referred to as the Next Generation RAN (NG-RAN)) may interface with 5GC 190 via a backhaul link 184. Base stations 102 may perform, among other functions, one or more of the following: delivery of user data, radio channel encryption and decryption, integrity protection, header compression, mobility control functions (e.g., handover, dual connectivity), inter-cell interference coordination, connection establishment and release, load balancing, distribution of non-access stratum (NAS) messages, NAS node selection, synchronization, radio access network (RAN) sharing, multimedia broadcast multicast service (MBMS), subscriber and equipment tracking, RAN information management (RIM), paging, positioning, and delivery of alert messages. Base stations 102 may communicate with each other directly or indirectly (e.g., through EPC 160 or 5GC 190) over backhaul links 134 (e.g., using an X2 interface). Backhaul links 134 may be wired or wireless.

[0037] Base stations 102 can wirelessly communicate with one or more UEs 104. Each base station 102 can provide communication coverage for a respective geographic coverage area 110. There may be overlapping geographic coverage areas 110. For example, a small cell 102′ can have a coverage area 110′ that overlaps with the coverage area 110 of one or more macro base stations 102. A network that includes both small cells and macro cells may be referred to as a heterogeneous network. A heterogeneous network may also include a home evolved Node B (eNB) (HeNB), which can provide service to a restricted group, which may be referred to as a closed subscriber group (CSG). The communication link 120 between the base station 102 and the UE 104 may include uplink (UL) (also known as reverse link) transmissions from the UE 104 to the base station 102 and / or downlink (DL) (also known as forward link) transmissions from the base station 102 to the UE 104. The communication link 120 may utilize multiple-input multiple-output (MIMO) antenna technology, including spatial multiplexing, beamforming, and / or transmit diversity. These communication links may be over one or more carriers. For each carrier allocated in a carrier aggregation for up to a total of up to Yx MHz (e.g., for x component carriers) for transmission in the DL and / or UL directions, the base station 102 / UE 104 may use spectrum with a bandwidth of up to Y MHz (e.g., 5, 10, 15, 20, 100, 400 MHz, etc.). These carriers may or may not be adjacent to each other. The allocation of carriers may be asymmetric with respect to DL and UL (e.g., more or fewer carriers may be allocated to DL than to UL). The component carriers may include a primary component carrier and one or more secondary component carriers. The primary component carrier may be referred to as a primary cell (PCell), and the secondary component carrier may be referred to as a secondary cell (SCell).

[0038] In another example, some UEs 104 may communicate with each other using a device-to-device (D2D) communication link 158. The D2D communication link 158 may use the DL / UL WWAN spectrum. The D2D communication link 158 may use one or more sidelink channels, such as a physical sidelink broadcast channel (PSBCH), a physical sidelink discovery channel (PSDCH), a physical sidelink shared channel (PSSCH), and a physical sidelink control channel (PSCCH). The D2D communication may be performed via a variety of wireless D2D communication systems, such as, for example, FlashLinQ, WiMedia, Bluetooth, ZigBee, Wi-Fi based on the IEEE 802.11 standard, LTE, or NR.

[0039] The wireless communication system may further include a Wi-Fi access point (AP) 150 in communication with a Wi-Fi station (STA) 152 in the 5 GHz unlicensed spectrum via a communication link 154. When communicating in the unlicensed spectrum, the STA 152 / AP 150 may perform a clear channel assessment (CCA) to determine whether the channel is available before communicating.

[0040] Small cell 102′ may operate in licensed and / or unlicensed spectrum. When operating in unlicensed spectrum, small cell 102′ may employ NR and use the same 5 GHz unlicensed spectrum as used by Wi-Fi AP 150. Small cell 102′ employing NR in the unlicensed spectrum may improve access network coverage and / or increase access network capacity.

[0041] Whether a small cell 102′ or a large cell (e.g., a macro base station), base station 102 may include an eNB, a gNode B (gNB), or other types of base stations. Some base stations, such as gNB 180, may operate in the traditional sub-6 GHz spectrum, millimeter wave (mmW) frequencies, and / or near-mmW frequencies to communicate with UE 104. When gNB 180 operates in mmW or near-mmW frequencies, gNB 180 may be referred to as a mmW base station. Extremely high frequency (EHF) is a portion of the RF spectrum in the electromagnetic spectrum. EHF has a range of 30 GHz to 300 GHz and a wavelength between 1 mm and 10 mm. Radio waves in this band may be referred to as millimeter waves. Near-mmW extends down to 3 GHz frequencies with a wavelength of 100 mm. Super high frequency (SHF) bands extend between 3 GHz and 30 GHz and are also referred to as centimeter waves. Communications using mmW / near-mmW radio frequency bands suffer from extremely high path loss and short range. The mmW base station 180 may utilize beamforming 182 with the UE 104 to compensate for the extremely high path loss and short range.

[0042] EPC 160 may 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. MME 162 may be in communication with a Home Subscriber Server (HSS) 174. MME 162 is a control node that handles signaling between UE 104 and EPC 160. Generally speaking, MME 162 provides bearer and connection management. All user Internet Protocol (IP) packets are passed through Serving Gateway 166, which itself is connected to PDN Gateway 172. PDN Gateway 172 provides UE IP address allocation and other functions. PDN Gateway 172 and BM-SC 170 are connected to IP Services 176. IP Services 176 may include the Internet, an intranet, an IP Multimedia Subsystem (IMS), PS streaming services, and / or other IP services. The BM-SC 170 can provide functionality for MBMS user service provisioning and delivery. The BM-SC 170 can serve as the entry point for content providers' MBMS transmissions, authorize and initiate MBMS bearer services within the Public Land Mobile Network (PLMN), and schedule MBMS transmissions. The MBMS Gateway 168 can be used to distribute MBMS traffic to base stations 102 within the Multicast Broadcast Single Frequency Network (MBSFN) area broadcasting a specific service, and can be responsible for session management (start / stop) and collecting eMBMS-related charging information.

[0043] 5GC 190 may 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. AMF 192 may be in communication with a unified data management (UDM) 196. AMF 192 may be a control node that handles signaling between UE 104 and 5GC 190. Generally speaking, AMF 192 may provide QoS flow and session management. User Internet Protocol (IP) packets (e.g., from one or more UEs 104) may be passed through UPF 195. UPF 195 may provide UE IP address allocation for one or more UEs, as well as other functions. UPF 195 is connected to IP services 197. IP services 197 may include the Internet, an intranet, an IP multimedia subsystem (IMS), PS streaming services, and / or other IP services.

[0044] A base station may also be referred to as a gNB, a NodeB, an evolved NodeB (eNB), an access point, a base transceiver station, a radio base station, a radio transceiver, a transceiver function, a basic service set (BSS), an extended service set (ESS), a transmit reception point (TRP), or some other suitable terminology. Base station 102 provides an access point for UE 104 to EPC 160 or 5GC 190. Examples of UE 104 include a cellular phone, a smartphone, 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., an MP3 player), a camera, a game console, a tablet device, a smart device, a wearable device, a vehicle, an electric meter, a gas pump, a large or small kitchen appliance, a healthcare device, an implant, a sensor / actuator, a display, or any other similarly functional device. Some UEs 104 may be referred to as IoT devices (e.g., a parking meter, a gas pump, an oven, a vehicle, a heart monitor, etc.). IoT UEs may include machine type communication (MTC) / enhanced MTC (eMTC, also known as Category (CAT)-M, Cat M1) UEs, NB-IoT (also known as CAT NB1) UEs, and other types of UEs. In the present disclosure, eMTC and NB-IoT may refer to future technologies that may evolve from or be based on these technologies. For example, eMTC may include FeMTC (further eMTC), eFeMTC (further enhanced eMTC), mMTC (massive MTC), etc., and NB-IoT may include eNB-IoT (enhanced NB-IoT), FeNB-IoT (further enhanced NB-IoT), etc. UE 104 may also be referred to as a station, mobile station, subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, client, or some other suitable terminology.

[0045] In an example, base station 102 can communicate with UE 104 via one or more relays, as shown in FIG. Figure 2 The repeaters may include one or more of a Class A repeater, a Class B repeater, or a Class C repeater, which may be subject to varying degrees of control by the base station 102 or other network components, as described.

[0046] Reference Figure 2, according to various aspects described herein, an example of another wireless communication access network 200 using repeaters is depicted. The wireless communication access network 200 may include a base station 102 that may communicate with one or more UEs 104 and / or a repeater 204, where the repeaters may be located between the base station 102 (and / or one or more intervening upstream repeaters) and the UE 104 (and / or one or more intervening downstream repeaters). In an example, the repeater 204 may be a Class B repeater that allows certain control by the base station 102 (e.g., for beamforming, uplink / downlink direction indication, etc.), and may provide amplify-and-forward functionality for communications to / from the UE 104 and may operate in full duplex.

[0047] As described, in an example, the repeater 204 may include components for amplifying and forwarding transmissions and for transmitting and / or receiving control data to and from other nodes, such as the base station 102. For example, the repeater 204 may include a controller 220 that may control a plurality of phased arrays 222, 224 (e.g., antenna arrays) and a variable gain function 226 to amplify received signals. For example, the repeater may receive signals from the base station 102, the UE 104, or another upstream or downstream node (e.g., another repeater) via the phased array 222. The repeater 204 may amplify the received signals via the variable gain 226 and may transmit the signals to the UE 104, the base station 102, or another downstream or upstream node via the phased array 224. In an example, the repeater 204 may communicate in full duplex by concurrently receiving signals via the phased array 222 and transmitting signals via the phased array 224. Additionally, control interface 228 can communicate control information to base station 102 and / or UE 104 (eg, via modem 240 and / or communication component 242 , as further described herein) and / or receive control information from base station 102 and / or UE 104 .

[0048] In a specific example, as described herein, the communication component 242 of the relay can communicate one or more parameters to the base station 102 to facilitate estimating a channel quality metric and scheduling UEs or other downstream nodes communicating with the relay 204 accordingly. For example, the communication component 242 can report one or more internal RF parameters, measurements of downlink beams transmitted by the base station 102 and / or uplink beams transmitted by the UE 104 or other downstream nodes to the base station, etc. The scheduling component 246 (e.g., via the modem 244) can receive the one or more parameters from the relay 204 and can estimate the channel quality metric and schedule one or more UEs for communication accordingly. For example, the scheduling component 246 can determine and / or specify one or more parameters for the UE to receive communications from the base station 102 and / or transmit communications to the base station 102, as further described herein.

[0049] Additionally, for example, the base station 102, the repeater 204, and / or the UE 104 may each be capable of beamforming antenna resources to transmit beams and / or receive beams to each other. Beamforming antenna resources may include selectively applying power to the antenna resources to achieve spatial directionality of the antenna resources that may be used to transmit or receive signals. This may optimize communication between nodes. In an example, the nodes may provide each other with feedback regarding which of multiple possible beams should be used or desired to be used. For example, the nodes may perform a beam management procedure (e.g., beam training) in which multiple beams may be transmitted by one node (e.g., the base station 102) and measured by other nodes (e.g., the repeater 204 and / or the UE 104) to determine which beam is optimal. The other nodes may indicate the desired beam to the one node, and the one node may transmit and / or receive based on the beam. The other nodes may receive and / or transmit based on a reciprocal beam.

[0050] In one example, in downlink (DL) operation, the repeater 204 may receive an analog signal from the base station 102 or an upstream node (e.g., an intermediate (high-end) repeater, an upstream IAB node, etc.) using an RX beam, then amplify the signal and forward it to the UE or another downstream node (e.g., a bottom-end repeater, a downstream IAB node, etc.) on a TX beam. In uplink (UL) operation, for example, the repeater 204 may receive an analog signal from the UE 104 or a downstream repeater (e.g., an intermediate (low-end) repeater) on an RX beam, then amplify the signal and forward it to the base station 102 or another upstream repeater (e.g., a high-end repeater) on a TX beam. The effective DL rate may be a function of the end-to-end SNR of the path from the base station 102 to the UE 104. The effective UL rate may be a function of the end-to-end SNR of the path from the UE to the base station. The end-to-end SNR along the path between the UE and the base station can, in turn, be a function of the SNR associated with each link along the path and one or more internal parameters at the UE and intervening repeaters, including the noise figure at the repeater and UE, the maximum power gain and / or maximum output power, the switching latency at the repeater (e.g., switching between transmission and reception), coupling effects at the repeater, etc.

[0051] Figure 3 An example of a system 300 for beamforming communications between a base station, one or more relays, one or more UEs, and the like is illustrated. A base station 102 can communicate with one or more relays 204 using one or more beams (e.g., two beams are shown), which can be determined or selected from a set of multiple possible beams that the base station 102 can implement by beamforming antenna resources. Similarly, each relay 204 can have multiple possible beams (e.g., three are shown for each relay) that can be used when communicating with one or more UEs 104. The channel quality between the base station 102 and the UE 104 can be a function of the channel quality between the base station 102 and the relay 204 (on the selected beam) and between the relay 204 and the UE 104 (on the selected beam), as well as internal RF parameters of the relay 204, as described. Base station 102 may schedule communication resources for UE 104 based on at least one of the channel quality on one or more of the links and / or internal parameters of relay 204 , one or more of which may be received from relay 204 .

[0052] For example, in a scenario where base station 102 facilitates channel measurements without the assistance of repeater 204, base station 102 may need to transmit each of its beams to repeater 204, and UE 104 receives using each of its beams to receive a forwarded signal for each transmitted beam from repeater 204. However, in some examples described herein, repeater 204 can assist base station 102 by measuring the channel quality of beams associated with UE 104 and beams associated with base station 102, and reporting these measurements to base station 102, which can reduce the total number of beams to be transmitted to complete the procedure. For example, repeater 204 can determine the end-to-end SNR of communication between base station 102 and UE 104 via repeater 204 by measuring the SNR of a link between base station 102 and repeater 204 (based on the corresponding beam), measuring the SNR of a link between UE 104 and repeater 204 (based on the corresponding beam), incorporating internal parameters of repeater 204, and the like.

[0053] Now go to Figure 4-8 , various aspects are depicted with reference to one or more components and one or more methods that can perform the actions or operations described herein, where various aspects in dashed lines may be optional. Figure 6-7 The operations described in the foregoing are presented in a particular order and / or as being performed by example components, but it should be understood that the order of these actions and the components performing the actions may vary depending on the implementation. Furthermore, it should be understood that the following actions, functions, and / or described components may be performed by a specially programmed processor, a processor executing specially programmed software or computer-readable media, or by any other combination of hardware components and / or software components capable of performing the described actions or functions.

[0054] Reference Figure 4 , one example of an implementation of relay 204 may include various components, some of which have been described above and are further described herein, including components such as one or more processors 412 and memory 416 in communication via one or more buses 444, and transceiver 402, which may operate in conjunction with modem 240 and / or communication component 242 to report parameters to the base station to facilitate scheduling UEs or other downstream nodes and to facilitate communications between the base station and UEs or other downstream nodes. For example, communication component 242 may optionally include: a parameter determination component 442 for determining one or more parameters related to determining a channel quality metric; and / or a forwarding component 446 for forwarding communications received from base station 102 to a UE or other downstream node and / or vice versa.

[0055] In one aspect, the one or more processors 412 may include the modem 240 and / or may be part of the modem 240 using one or more modem processors. Thus, various functions associated with the communication component 242 may be included in the modem 240 and / or the processor 412 and, in one aspect, may be performed by a single processor, while in other aspects, different ones of these functions may be performed by a combination of two or more different processors. Additionally, the repeater 204 may include reference to Figure 2 Other components described for communication (e.g., controller 220, phased arrays 222, 224, variable gain function 226, etc. (which may be part of RF front end 488), control interface 228 (which may communicate via communication component 242 to report and / or receive certain information to / from base station 102 or other nodes, etc.), as further described herein). For example, in one aspect, the one or more processors 412 may include any one or any combination of the following: a modem processor, or a baseband processor, or a digital signal processor, or a transmit processor, or a receiver processor, or a transceiver processor associated with transceiver 402. In other aspects, some of the features of the one or more processors 412 associated with communication component 242 and / or modem 240 may be performed by transceiver 402.

[0056] In addition, the memory 416 can be configured to store local versions of data and / or applications 475 used herein, or the communication component 242 and / or one or more subcomponents thereof executed by the at least one processor 412. The memory 416 can include any type of computer-readable medium usable by a computer or the at least one processor 412, such as random access memory (RAM), read-only memory (ROM), tape, magnetic disk, optical disk, volatile memory, non-volatile memory, and any combination thereof. In one aspect, for example, when the repeater 204 is operating the at least one processor 412 to execute the communication component 242 and / or one or more subcomponents thereof, the memory 416 can be a non-transitory computer-readable storage medium that stores one or more computer-executable codes defining the communication component 242 and / or one or more subcomponents thereof and / or data associated therewith.

[0057] The transceiver 402 may include at least one receiver 406 and at least one transmitter 408. The receiver 406 may include hardware, firmware, and / or software code executable by a processor, the code including instructions and stored in a memory (e.g., a computer-readable medium), for receiving data. The receiver 406 may be, for example, a radio frequency (RF) receiver. In one aspect, the receiver 406 may receive signals transmitted by upstream nodes, downstream nodes, and the like. Additionally, the receiver 406 may process such received signals and may also obtain signal measurements such as, but not limited to, Ec / Io, SNR, reference signal received power (RSRP), received signal strength indicator (RSSI), and the like. The transmitter 408 may include hardware, firmware, and / or software code executable by a processor, the code including instructions and stored in a memory (e.g., a computer-readable medium), for transmitting data. Suitable examples of the transmitter 408 may include, but are not limited to, an RF transmitter.

[0058] In addition, in one aspect, the repeater 204 may include an RF front end 488 that can operate in communication with one or more antennas 465 and the transceiver 402 for receiving and transmitting radio transmissions (e.g., wireless communications transmitted by at least one base station 102 or wireless transmissions transmitted by a UE or other downstream node). The RF front end 488 can be connected to the one or more antennas 465 and can include one or more low noise amplifiers (LNAs) 490, one or more switches 492, one or more power amplifiers (PAs) 498, and one or more filters 496 for transmitting and receiving RF signals.

[0059] In one aspect, the LNAs 490 can amplify the received signal to a desired output level. In one aspect, each LNA 490 can have specified minimum and maximum gain values. In one aspect, the RF front end 488 can use one or more switches 492 to select a particular LNA 490 and its specified gain value based on the desired gain value for a particular application.

[0060] Furthermore, for example, one or more PAs 498 can be used by the RF front end 488 to amplify the signal to obtain an RF output at a desired output power level. In one aspect, each PA 498 can have a specified minimum and maximum gain value. In one aspect, the RF front end 488 can use one or more switches 492 to select a particular PA 498 and its specified gain value based on the desired gain value for a particular application.

[0061] Additionally, for example, one or more filters 496 can be used by the RF front end 488 to filter a received signal to obtain an input RF signal. Similarly, in one aspect, for example, a corresponding filter 496 can be used to filter the output from a corresponding PA 498 to produce an output signal for transmission. In one aspect, each filter 496 can be connected to a specific LNA 490 and / or PA 498. In one aspect, the RF front end 488 can use one or more switches 492 to select a transmit or receive path using a specific filter 496, LNA 490, and / or PA 498 based on a configuration as specified by the transceiver 402 and / or processor 412.

[0062] As such, the transceiver 402 can be configured to transmit and receive wireless signals via the RF front end 488 through one or more antennas 465. In one aspect, the transceiver 402 can be tuned to operate at a specified frequency so that the repeater 204 can communicate with, for example, one or more upstream nodes (e.g., base station 102, upstream IAB node, other repeaters, etc.) or one or more cells associated with one or more upstream nodes, one or more downstream nodes (e.g., UE 104, downstream IAB node, other repeaters, etc.), etc. In one aspect, for example, the modem 240 can configure the transceiver 402 to operate at a specified frequency and power level based on the configuration of the repeater 204 and the communication protocol used by the modem 240.

[0063] In one aspect, the modem 240 can be a multi-band, multi-mode modem that can process digital data and communicate with the transceiver 402 so that the digital data is sent and received using the transceiver 402. In one aspect, the modem 240 can be multi-band and configured to support multiple frequency bands for a specific communication protocol. In one aspect, the modem 240 can be multi-mode and configured to support multiple operating networks and communication protocols. In one aspect, the modem 240 can control one or more components of the repeater 204 (e.g., the RF front end 488, the transceiver 402) to enable transmission and / or reception of signals from the network or UE, upstream node, or downstream node based on a specified modem configuration. In one aspect, the modem configuration can be based on the mode of the modem and the frequency band used. In another aspect, the modem configuration can be based on configuration information associated with the repeater 204 provided by the network during cell selection and / or cell reselection or initial access.

[0064] In one aspect, the processor(s) 412 may correspond to a Figure 8 Similarly, the memory 416 may correspond to one or more of the processors described in conjunction with the repeater 204 in FIG. Figure 8The memory described in the repeater 204.

[0065] Reference Figure 5 An example implementation of the base station 102 may include various components, some of which have been described above, but also includes components such as one or more processors 512, memory 516, and transceiver 502 in communication via one or more buses 544, which may operate in conjunction with the modem 244 to provide backhaul access to the core network. In addition, the one or more processors 512, memory 516, and transceiver 502 may optionally operate with the scheduling component 246 to schedule UEs or other downstream nodes for communication based on parameters received from the relay. In an example, the scheduling component 246 may optionally include: a parameter processing component 542 for processing one or more parameters received from the relay; and / or a quality estimation component 546 for estimating a channel quality metric based on the one or more parameters.

[0066] The transceiver 502, receiver 506, transmitter 508, one or more processors 512, memory 516, applications 575, bus 544, RF front end 588, LNA 590, switch 592, filter 596, PA 598, and one or more antennas 565 may be the same as or similar to corresponding components of repeater 204 as described above, but are configured or otherwise programmed for base station 102 operation rather than repeater operation.

[0067] In one aspect, the processor(s) 512 may correspond to a Figure 8 Similarly, the memory 516 may correspond to the one or more processors described in conjunction with the base station to schedule the UE, as described. Figure 8 The memory described by the base station in to schedule the UE, as described.

[0068] Figure 6 A flow chart illustrating an example of a method 600 for reporting information related to determining a channel quality metric. In an example, the repeater 204 may use Figure 2 and Figure 4 One or more components described in the method 600 are used to perform one or more functions described in the method 600.

[0069] In method 600, at block 602, one or more transmitted downlink beams may be received from a serving base station. In one aspect, communication component 242 (e.g., in combination with processor(s) 412, memory 416, transceiver 402, etc.) may receive one or more transmitted downlink beams from a serving base station. For example, the serving base station may be a base station (e.g., base station 102) that serves one or more UEs (e.g., UE 104) or other downstream nodes via relay 204. For example, the other downstream nodes may include one or more downstream relays downstream of relay 204, e.g., closer to the UEs. The one or more transmitted downlink beams may include beams previously selected by relay 204 for communication with the serving base station (e.g., as indicated via control interface 228). In another example, the one or more transmitted downlink beams may include multiple beams transmitted by the serving base station for use in communicating with downstream devices (including the relay 204, other relays, and / or one or more UEs, etc.), each of which may be beamformed in a different spatial direction. In an example, the relay 204 may be a Class B relay that amplifies the transmitted downlink beam(s) and forwards them to one or more UEs or downstream nodes using one or more associated transmit beams.

[0070] In method 600, at block 604, one or more transmitted uplink beams may be received from a downstream node served by a serving base station. In one aspect, communication component 242 (e.g., in combination with processor(s) 412, memory 416, transceiver 402, etc.) may receive one or more transmitted uplink beams from a downstream node served by a serving base station. For example, the downstream node may include a UE, another relay, etc., and the one or more transmitted uplink beams may be associated with different directions, as described. The one or more transmitted uplink beams may include a beam previously selected by a downstream node or relay 204 for communicating with the downstream node. In another example, the one or more transmitted uplink beams may include multiple beams transmitted by relay 204 or a downstream node for use in communicating at the relay or downstream node, each of which beams may be beamformed in a different spatial direction. In an example, the repeater 204 may be a Class B repeater that may amplify the transmitted uplink beam(s) and forward them to one or more base stations or upstream nodes using one or more associated transmit beams.

[0071] In method 600, at block 606, one or more parameters related to determining a channel quality metric using at least the one or more transmitted downlink beams and the one or more transmitted uplink beams can be transmitted to a serving base station. In one aspect, parameter determination component 442 (e.g., in combination with processor(s) 412, memory 416, transceiver 402, communication component 242, via control interface 228, etc.) can transmit one or more parameters related to determining a channel quality metric using at least the one or more transmitted downlink beams and the one or more transmitted uplink beams to a serving base station (e.g., base station 102). For example, the one or more parameters can include internal parameters of repeater 204, such as RF parameters of RF front end 488 of repeater 204, or other parameters that can be used to determine channel quality. For example, the one or more parameters may include a noise figure (NF), a coupling metric, a maximum power output, a switching latency for switching a transceiver (e.g., transceiver 402) from transmit to receive or vice versa, a switching latency for switching a transceiver between uplink and downlink communication directions, a latency for steering a transmit or receive beam at a transceiver, or a power gain of a radio at repeater 204, etc. For example, parameter determination component 442 may determine one or more of these parameters based on measuring conditions related to repeater 204, querying a tracking component (not shown) that can track such parameters of repeater 204 based on a communication history, etc. In another example, the one or more parameters may include a channel quality metric measured or estimated on one or more of a link between repeater 204 and base station 102 (or other upstream node) or a link between repeater 204 and UE 104 (or other downstream node). In an example, these channel quality metrics may be measured based on associated transmit beams, and may be measured for one or more transmit beams (eg, to facilitate determining a desired combination of beams to use).

[0072] In method 600, optionally, at block 608, a downlink signal measurement can be measured for at least one of the one or more transmitted downlink beams. In one aspect, parameter determination component 442 (e.g., in combination with processor(s) 412, memory 416, transceiver 402, communication component 242, etc.) can measure the downlink signal measurement for at least one of the one or more transmitted downlink beams. For example, parameter determination component 442 can measure a channel quality metric for the one or more transmitted downlink beams received at block 602. For example, parameter determination component 442 can measure a channel quality metric for a transmitted downlink beam selected for communication between a serving base station for a UE and relay 204. In an example, parameter determination component 442 can measure a channel quality metric of one or more transmitted downlink beams as a raw measurement (such as SNR, SINR, RSRP, reference signal received quality (RSRQ), etc.) or other measurement (such as a channel quality indicator (CQI), a precoding matrix indicator (PMI), a load indicator (LI), a rank indicator (RI), etc.). For example, parameter determination component 442 can: report the measured channel quality metric to the serving base station as part of transmitting one or more parameters to the serving base station (e.g., at block 606). For example, parameter determination component 442 can report the measured channel quality metric for a beam selected for communication between the serving base station and relay 204 or for multiple beams transmitted by the serving base station as part of a beam management or training procedure.

[0073] In method 600, optionally, at block 610, an uplink signal measurement may be measured for at least one of the one or more transmitted uplink beams. In one aspect, parameter determination component 442 (e.g., in combination with processor(s) 412, memory 416, transceiver 402, communication component 242, etc.) may measure the uplink signal measurement for at least one of the one or more transmitted uplink beams. For example, parameter determination component 442 may measure a channel quality metric for the one or more transmitted uplink beams received at block 604. For example, parameter determination component 442 may measure a channel quality metric for a transmitted uplink beam selected for communication between a UE served by a serving base station and relay 204. In an example, parameter determination component 442 may measure the channel quality metric for the one or more transmitted uplink beams as a raw measurement (such as SNR, SINR, RSRP, RSRQ, etc.) or as another measurement (such as CQI, PMI, LI, RI, etc.). For example, parameter determining component 442 can report the measured channel quality metric to the serving base station as part of transmitting one or more parameters to the serving base station, e.g., at block 606. For example, parameter determining component 442 can report the channel quality metric measured for a beam selected for communication between the UE and relay 204 or for multiple beams transmitted by the UE as part of a beam management or training procedure that relay 204 and / or the serving base station can initiate for the UE.

[0074] In method 600, optionally, at block 612, a channel quality metric may be estimated based on downlink signal measurements and uplink signal measurements. In one aspect, parameter determination component 442 (e.g., in combination with processor(s) 412, memory 416, transceiver 402, communication component 242, etc.) may estimate the channel quality metric based on the downlink signal measurements and uplink signal measurements. For example, parameter determination component 442 may determine an end-to-end channel quality metric based on signal quality metrics measured for at least one transmitted downlink beam (e.g., measured at block 608) and at least one transmitted uplink beam (e.g., measured at block 610). Additionally, in an example, parameter determination component 442 may also estimate the channel quality metric based on internal parameters of repeater 204, as described. Thus, in an example, parameter determination component 442 may add the measured channel quality metric and / or internal parameters. In an example, parameter determining component 442 may transmit the estimated channel quality metric when transmitting one or more parameters to the serving base station, e.g., at block 606. In one example, parameter determining component 442 may estimate channel quality metrics for each pair of uplink / downlink beams and may report the plurality of channel quality metrics to the serving base station and / or the UE for use in determining which beams to use.

[0075] In an example, in method 600, optionally, at block 614, a downstream node may be instructed to transmit the one or more transmitted uplink beams. In one aspect, communication component 242 (e.g., in combination with processor(s) 412, memory 416, transceiver 402, etc.) may instruct the downstream node to transmit the one or more transmitted uplink beams. For example, communication component 242 may transmit to the downstream node an instruction to transmit one or more transmitted uplink beams (e.g., an instruction to transmit all available beams) as part of a beam management or training procedure to facilitate determining a desired beam for communicating with the downstream node (e.g., a UE). In another example, communication component 242 may transmit beams that the UE may evaluate and determine which beam to select for communicating with relay 204. The UE may indicate the beam to relay 204, and the relay may receive the one or more transmitted uplink beams at block 604 based on the selection. In one example, the communication component 242 can transmit the instruction as a repeat of an instruction from an upstream node (e.g., serving) base station to be transmitted to a downstream node (e.g., served UE). In another example, the upstream node can transmit the instruction directly to the downstream node without involving the relay 204.

[0076] In an example, in method 600, optionally, at block 616, a measurement configuration may be received, the measurement configuration indicating information for measuring at least one of the one or more transmitted downlink beams or the one or more transmitted uplink beams. In one aspect, communication component 242 (e.g., in conjunction with processor(s) 412, memory 416, transceiver 402, etc.) may receive the measurement configuration indicating information for measuring at least one of the one or more transmitted downlink beams or the one or more transmitted uplink beams. For example, communication component 242 may receive the measurement configuration from a serving base station (e.g., via control interface 228), etc. The measurement configuration may indicate parameters for relay 204 to instruct a downstream node to transmit one or more transmitted uplink beams (e.g., at block 614). In another example, the measurement configuration may indicate parameters for the repeater to determine when to measure one or more transmitted downlink beams and / or uplink beams and what metrics to measure, and the parameter determination component 442 may accordingly measure channel quality metrics of the one or more transmitted downlink beams and / or uplink beams to report to the serving base station.

[0077] In an example, in method 600, optionally, at block 616, a reporting configuration may be received that indicates at least one of the one or more parameters to be transmitted or the time during which the one or more parameters are to be transmitted. In one aspect, communication component 242 (e.g., in combination with processor(s) 412, memory 416, transceiver 402, etc.) may receive a reporting configuration that indicates at least one of the one or more parameters to be transmitted or the time during which the one or more parameters are to be transmitted. For example, the reporting configuration may indicate whether relay 204 is to report internal parameters, estimated channel quality metrics for various links, values ​​calculated based on the internal parameters, estimated channel quality, etc. Additionally, for example, the reporting configuration may indicate a time, periodicity, event, or other trigger for reporting the one or more parameters, and transmitting the one or more parameters at block 606 may be based on the reporting configuration.

[0078] Figure 7 A flow chart illustrating an example of a method 700 for scheduling communications based on received information related to determining a channel quality metric. In an example, the base station 102 may use Figure 2 and 5 One or more components described in the method 700 are used to perform one or more functions described in the method 700.

[0079] In method 700, at block 702, one or more transmitted downlink beams may be transmitted. In one aspect, scheduling component 246 (e.g., in combination with processor(s) 512, memory 516, transceiver 502, etc.) may transmit the one or more downlink beams. For example, base station 102 may serve one or more UEs (e.g., UE 104) or other downstream nodes via relay 204. For example, the other downstream nodes may include one or more downstream relays downstream of relay 204, e.g., closer to the UEs. The one or more transmitted downlink beams may include a beam previously selected by relay 204 for communication with serving base station 102 (e.g., as indicated by control interface 228). In another example, the one or more transmitted downlink beams may include multiple beams transmitted by serving base station 102 for use in communicating with downstream devices (including relay 204, other relays, and / or one or more UEs, etc.), each of which may be beamformed in a different spatial direction.

[0080] In method 700, one or more parameters related to determining a channel quality metric using at least one of the one or more transmitted downlink beams and at least one of the one or more transmitted uplink beams may be received at block 704. In one aspect, parameter processing component 542 (e.g., in combination with processor(s) 512, memory 516, transceiver 502, scheduling component 246, etc.) may receive, from a relay, one or more parameters related to determining a channel quality metric using at least one of the one or more transmitted downlink beams and at least one of the one or more transmitted uplink beams. For example, the one or more parameters may include internal parameters of the relay 204, channel quality metrics of the at least one uplink beam and / or the at least one downlink beam measured at the relay 204 (e.g., raw measurements (such as SNR, SINR, RSRP, RSRQ, etc.) or other measurements (such as CQI, PMI, LI, RI, etc.)), estimated channel quality metrics calculated based on the channel quality metrics of the at least one uplink beam and / or the at least one downlink beam measured at the relay 204, internal parameters of the relay 204, etc., as described. In addition, the one or more parameters may be associated with the selected beam and / or the plurality of available beams to facilitate determining a desired beam pair to be used for communication from the base station (via the relay) to the UE and / or communication from the UE (via the relay) to the base station, etc.

[0081] In method 700, optionally, at block 706, a channel quality metric may be determined based at least in part on the one or more parameters. In one aspect, quality estimation component 546 (e.g., in combination with processor(s) 512, memory 516, transceiver 502, scheduling component 246, etc.) may determine the channel quality metric based at least in part on the one or more parameters. For example, quality estimation component 546 may determine that the channel quality metric is received as one or more of the parameters. In another example, quality estimation component 546 may estimate the channel quality metric based on one or more received parameters (such as based on received internal parameters of relay 204), which may be added to or otherwise used to modify beam-related measurements that may be measured by base station 102, measured by UE 104 served by the base station (and reported back by relay 204), etc. In yet another example, the quality estimation component 546 may estimate the channel quality metric based on channel quality measurements for the at least one uplink beam and / or the at least one downlink beam received from the repeater 204 (e.g., as measured by the repeater 204 (as described above)).

[0082] In method 700, optionally, at block 708, a configuration for communicating with a downstream node may be determined based, at least in part, on a channel quality metric. In one aspect, scheduling component 246 (e.g., in combination with processor(s) 512, memory 516, transceiver 502, etc.) may determine a configuration for communicating with a downstream node based, at least in part, on the channel quality metric. In one example, scheduling component 246 may determine resources for scheduling a downstream node (e.g., a UE) via relay 204 based on the channel quality metric. For example, based on the channel quality metric, scheduling component 246 may determine a transmit power, receive power, data rate, modulation and coding scheme (MCS), antenna rank, or resources for communicating with the downstream node. In another example, scheduling component 246 may determine a transmit beam and / or receive beam to use when communicating with a downstream node (e.g., a UE) via relay 204 based on the channel quality metric. As described, for example, one or more parameters received from repeater 204 may include channel metrics associated with multiple beams and / or beam combinations (e.g., combinations of beams between base station 102 and repeater 204 and between repeater 204 and downstream nodes).

[0083] For example, scheduling component 246 can select transmit and / or receive beams, respectively, based on determining which beams and / or beam combinations have desired channel quality metrics. In an example, scheduling component 246 can select whether to serve a downstream node (e.g., a UE) directly or via relay 204 based on the channel quality metrics. For example, in the case where base station 102 serves a downstream node (e.g., a UE) directly (e.g., without employing a relay), scheduling component 246 can select a transmit beam for transmitting downlink communications to the downstream node, a receive beam for use by the downstream node when receiving downlink communications from base station 102, a receive beam for receiving uplink communications from the downstream node, and / or a transmit beam for use by the downstream node when transmitting uplink communications to base station 102. In the case where scheduling component 246 selects a beam for the downstream node, it can transmit information about the selected beam to the downstream node. For example, where base station 102 serves a downstream node via relay 204, scheduling component 246 may further select a receive beam at relay 204 that corresponds to a transmit beam at base station 102 for receiving downlink communications transmitted by base station 102, and may select a transmit beam at relay 204 that corresponds to a receive beam at the downstream node for use by relay 204 when transmitting downlink communications from base station 102 to the downstream node. Similarly, in this example where base station 102 serves downstream node 102 via relay 204, scheduling component 246 may further select a transmit beam at relay 204 that corresponds to a receive beam at base station 102 for transmitting uplink communications to base station 102, and may select a receive beam at relay 204 that corresponds to a transmit beam at the downstream node for use by relay 204 when receiving uplink communications from the downstream node. Where scheduling component 246 selects a beam for repeater 204, it can communicate information about the selected beam to the repeater, as described herein.

[0084] In method 700, at block 710, communication may be performed with the downstream node via the relay based on the configuration. In one aspect, scheduling component 246 (e.g., in combination with processor(s) 512, memory 516, transceiver 502, etc.) may communicate with the downstream node via the relay based on the configuration. For example, scheduling component 246 may schedule resources for communication and / or transmit communication (or configure transmission of communication) based on the determined MCS, antenna rank, transmit power, receive power, data rate, etc. In another example, scheduling component 246 may communicate based on the determined transmit and / or receive beams (which are determined based on relevant parameters from relay 204), as described above. Additionally, as described above, scheduling component 246 may determine whether to communicate with the downstream node (e.g., UE 104) directly and / or via one or more relays 204, wherein the determination may be based on the channel quality metrics.

[0085] In an example, in method 700, optionally, at block 712, a measurement configuration may be transmitted, the measurement configuration indicating information for measuring at least one of the one or more transmitted downlink beams or the one or more transmitted uplink beams. In one aspect, scheduling component 246 (e.g., in combination with processor(s) 512, memory 516, transceiver 502, etc.) may transmit the measurement configuration indicating information for measuring at least one of the one or more transmitted downlink beams or the one or more transmitted uplink beams. For example, scheduling component 246 may transmit the measurement configuration to relay 204. In one example, the measurement configuration may indicate parameters for relay 204 to instruct downstream nodes to transmit one or more transmitted uplink beams. In another example, the measurement configuration may indicate parameters for the relay to determine when to measure one or more transmitted downlink beams and / or uplink beams and / or what metrics to measure.

[0086] In an example, in method 700, optionally, at block 714, a reporting configuration may be transmitted that indicates at least one of the one or more parameters to be transmitted or the time during which the one or more parameters are to be transmitted. In one aspect, scheduling component 246 (e.g., in combination with processor(s) 512, memory 516, transceiver 502, etc.) may transmit a reporting configuration that indicates at least one of the one or more parameters to be transmitted or the time during which the one or more parameters are to be transmitted. For example, the reporting configuration may indicate whether relay 204 is to report internal parameters, estimated channel quality metrics for various links, values ​​calculated based on the internal parameters, estimated channel quality, etc. Additionally, for example, the reporting configuration may indicate a time, periodicity, event, or other trigger for reporting the one or more parameters, and receiving the one or more parameters at block 704 may be based on the reporting configuration.

[0087] In various examples described herein, scheduling may be performed by a base station (e.g., a gNB). A Class B relay may be used, which may be a Layer 1 (L1) relay, where scheduling may be a Layer 2 (L2) functionality; and the Class B relay may support some degree of control, as described. A scheduler (e.g., of base station 102) may seek to optimize certain objectives across served UEs (e.g., the geometric mean of the UL / DL rates achieved at these UEs, QoS requirements for different UE services, etc.). In this example, the gNB may determine the end-to-end SNR to determine the MCS to schedule on each sublink. In an example, the base station and / or UE may perform end-to-end measurements (e.g., where the UE may report measurements to the base station). The end-to-end SNR may also be a function of internal parameters of intervening relays and UEs. Advantages of scheduling coordination in multi-hop communications as described herein include that intervening relays support dual communication with both the parent (BS / relay) and the child (relay / UE), thus enabling measurements to be performed on both links. Additionally, intervening repeaters can have better estimates of their internal parameters (NF, coupling, power gain, etc.).

[0088] In addition, for example, the relay may perform measurements on multiple parent and child beams (as described), and the measurement configuration may be determined by the control node / base station. The relay may send to the base station raw measurement reports for the parent and / or child links per beam, per-beam parent-relay-child SNR estimates, raw internal parameters that affect end-to-end SNR, and the like. Information sharing may be for both UL scheduling and DL scheduling. Based on the reported information, the base station may schedule appropriate MCS or other parameters per UE, as described above.

[0089] Figure 88 is a block diagram of a MIMO communication system 800 including a base station 102 and a relay 204 (or a UE or other downstream node). Figure 1 Aspects of the wireless communication access network 100 are described. The base station 102 may be a reference Figure 1 8. Examples of various aspects of base station 102 are described. Base station 102 may be equipped with antennas 834 and 835, while repeater 204 may be equipped with antennas 852 and 853. In MIMO communication system 800, base station 102 may be able to transmit data simultaneously over multiple communication links. Each communication link may be referred to as a "layer," and the "rank" of a communication link may indicate the number of layers used for communication. For example, in a 2x2 MIMO communication system where base station 102 transmits two "layers," the communication link between base station 102 and repeater 204 may have a rank of 2.

[0090] At base station 102, a transmit (Tx) processor 820 may receive data from a data source. The transmit processor 820 may process the data. The transmit processor 820 may also generate control symbols or reference symbols. The transmit MIMO processor 830 may perform spatial processing (e.g., precoding) on ​​the data symbols, control symbols, or reference symbols, as applicable, and may provide output symbol streams to transmit modulators / demodulators 832 and 833. Each modulator / demodulator 832 to 833 may process its own output symbol stream (e.g., for OFDM, etc.) to obtain an output sample stream. Each modulator / demodulator 832 to 833 may further process (e.g., convert to analog, amplify, filter, and upconvert) the output sample stream to obtain a DL signal. In one example, the DL signals from modulators / demodulators 832 and 833 may be transmitted via antennas 834 and 835, respectively.

[0091] Repeater 204 may be a reference Figure 1-3Examples of aspects of repeater 204 described in [ 15 ] and [ 16 ] are provided. At repeater 204, repeater antennas 852 and 853 may receive downlink signals from base station 102 and may provide the received signals to modulators / demodulators 854 and 855, respectively. Each modulator / demodulator 854 to 855 may condition (e.g., filter, amplify, downconvert, and digitize) its respective received signal to obtain input samples. Each modulator / demodulator 854 to 855 may further process the input samples (e.g., for OFDM, etc.) to obtain received symbols. A MIMO detector 856 may receive the received symbols from modulators / demodulators 854 and 855, perform MIMO detection on the received symbols where applicable, and provide detected symbols. A receive (Rx) processor 858 may process (e.g., demodulate, deinterleave, and decode) the detected symbols, provide decoded data for repeater 204 to a data output, and provide decoded control information to a processor 880 or memory 882.

[0092] Processor 880 may, in some cases, execute stored instructions to instantiate communication component 242 (e.g., see Figure 2 and Figure 4 ) to report parameters and / or forward communications.

[0093] On the uplink (UL), at repeater 204, a transmit processor 864 may receive and process data from a data source. Transmit processor 864 may also generate reference symbols for a reference signal. The symbols from transmit processor 864 may be precoded by transmit MIMO processor 866, if applicable, further processed by modulators / demodulators 854 and 855 (e.g., for SC-FDMA, etc.), and transmitted to base station 102 based on communication parameters received from base station 102. At base station 102, the UL signal from repeater 204 may be received by antennas 834 and 835, processed by modulators / demodulators 832 and 833, detected by MIMO detector 836, if applicable, and further processed by receive processor 838. Receive processor 838 may provide decoded data to a data output and to processor 840 or memory 842.

[0094] Processor 840 may, in some cases, execute stored instructions to instantiate scheduling component 246 (e.g., see Figure 2 and Figure 5 ) to configure communication resources to the UE based on information received from the relay.

[0095] The components of the repeater 204 may be implemented individually or collectively using one or more ASICs adapted to perform some or all applicable functions in hardware. Each of the modules mentioned may be a device for performing one or more functions related to the operation of the MIMO communication system 800. Similarly, the components of the base station 102 may be implemented individually or collectively using one or more ASICs adapted to perform some or all applicable functions in hardware. Each of the components mentioned may be a device for performing one or more functions related to the operation of the MIMO communication system 800.

[0096] The above detailed description, set forth above in conjunction with the accompanying drawings, describes examples and does not represent the only examples that can be implemented or fall within the scope of the claims. The term "example" when used in this description means "serving as an example, instance, or illustration," and does not mean "better than" or "better than other examples." This detailed description includes specific details to provide an understanding of the described techniques. However, these techniques can be practiced without these specific details. In some instances, well-known structures and devices are shown in block diagram form to avoid obscuring the concepts of the described examples.

[0097] Information and signals may be represented using any of a variety of different technologies and techniques. For example, data, instructions, commands, information, signals, bits, symbols, and chips that may be referred to throughout the above description may be represented by voltages, currents, electromagnetic waves, magnetic fields or particles, optical fields or particles, computer-executable code or instructions stored on a computer-readable medium, or any combination thereof.

[0098] The various illustrative blocks and components described in conjunction with the disclosure herein may be implemented or executed with a specially programmed device, such as, but not limited to, a processor designed to perform the functions described herein, a digital signal processor (DSP), an ASIC, an FPGA or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof. The specially programmed processor may be a microprocessor, but in the alternative, the processor may be any conventional processor, controller, microcontroller, or state machine. The specially programmed processor may also be implemented as a combination of computing devices, for example, a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration.

[0099] The functions described herein may be implemented in hardware, software executed by a processor, firmware, or any combination thereof. If implemented in software executed by a processor, each function may be stored as one or more instructions or codes on or transmitted by a non-transitory computer-readable medium. Other examples and implementations fall within the scope and spirit of the present disclosure and the appended claims. For example, due to the nature of software, each of the functions described above may be implemented using software executed by a specially programmed processor, hardware, firmware, hardwiring, or any combination thereof. Features that implement the functions may also be physically located in various locations, including being distributed so that parts of the functions are implemented at different physical locations. Moreover, as used herein (including in the claims), the term "or" used in a list of items followed by "at least one of" indicates a disjunctive list, so that, for example, a list of "at least one of A, B, or C" represents A or B or C or AB or AC or BC or ABC (i.e., A and B and C).

[0100] Computer-readable media include both computer storage media and communication media, including any media that facilitates the transfer of a computer program from one place to another. Storage media can be any available media that can be accessed by a general-purpose or special-purpose computer. As an example and not limitation, computer-readable media may include RAM, ROM, EEPROM, CD-ROM or other optical disk storage, disk storage or other magnetic storage devices, or any other medium that can be used to carry or store the desired program code means in the form of instructions or data structures and can be accessed by a general-purpose or special-purpose computer, or a general-purpose or special-purpose processor. Similarly, any connection is also properly referred to as a computer-readable medium. For example, if the software is transmitted from a website, server, or other remote source using a coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), or wireless technologies such as infrared, radio, and microwaves, then the coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwaves are included in the definition of medium. As used herein, disk and disc include compact disc (CD), laser disc, optical disc, digital versatile disc (DVD), floppy disk, and Blu-ray disc, where disks usually reproduce data magnetically, while discs reproduce data optically with lasers. Combinations of the above media are also included within the scope of computer-readable media.

[0101] The previous description of the disclosure is provided to enable those skilled in the art to make or use the disclosure. Various modifications to the disclosure will be readily apparent to those skilled in the art, and the common principles defined herein may be applied to other variations without departing from the spirit or scope of the disclosure. Furthermore, although elements of the described aspects and / or embodiments may be described or claimed in the singular, the plural is contemplated unless limitation to the singular is explicitly stated. In addition, all or part of any aspect and / or embodiment may be used in conjunction with all or part of any other aspect and / or embodiment, unless otherwise stated. Thus, the disclosure is not limited to the examples and designs described herein, but should be granted the widest scope consistent with the principles and novel features disclosed herein.

[0102] In the following, an overview of further examples is provided:

[0103] 1. A method for wireless communication, comprising:

[0104] receiving, at the repeater, one or more transmitted downlink beams from the serving base station;

[0105] receiving, at the relay, one or more transmitted uplink beams from a downstream node served by the serving base station; and

[0106] One or more parameters related to determining a channel quality metric using at least the one or more transmitted downlink beams and the one or more transmitted uplink beams are communicated to the serving base station.

[0107] 2. The method of Example 1, further comprising:

[0108] measuring a downlink signal measurement for at least one of the one or more transmitted downlink beams; and

[0109] measuring an uplink signal measurement for at least one of the one or more transmitted uplink beams,

[0110] The transmitting of the one or more parameters includes transmitting raw measurements of the downlink signal measurement and the uplink signal measurement to the serving base station.

[0111] 3. The method as described in Example 2 further includes: estimating an estimated channel quality metric of a beam combination including the at least one downlink beam and the at least one uplink beam based on the downlink signal measurement and the uplink signal measurement, wherein transmitting the one or more parameters includes transmitting the estimated channel quality metric of the beam combination to the serving base station.

[0112] 4. The method of any one of Examples 1 to 3, wherein the one or more parameters include radio frequency parameters of a radio at the repeater.

[0113] 5. A method as described in Example 4, wherein transmitting the one or more parameters includes transmitting to the serving base station at least one of a noise figure (NF), a coupling metric, a maximum power output, a switching wait time for switching the transceiver from transmit to receive or from receive to transmit, a switching wait time for switching the transceiver between uplink and downlink communication directions, a wait time for steering a transmit or receive beam at the transceiver, or a power gain of the radio at the repeater.

[0114] 6. The method as described in any one of Examples 1 to 5 further includes: receiving a measurement configuration from the serving base station, the measurement configuration indicating information for measuring at least one of the one or more transmitted downlink beams or the one or more transmitted uplink beams.

[0115] 7. The method of Example 6, further comprising: instructing the downstream node to transmit the plurality of transmitted uplink beams based on the measurement configuration.

[0116] 8. The method described in any one of Examples 1 to 7 further includes: receiving a reporting configuration from the serving base station, the reporting configuration indicating at least one of the one or more parameters to be transmitted or the time during which the one or more parameters are to be transmitted, wherein the transmission of the one or more parameters is based on the reporting configuration.

[0117] 9. A method for wireless communication, comprising:

[0118] transmitting, by a serving base station, one or more transmitted downlink beams;

[0119] receiving, from the relay, one or more parameters related to determining a channel quality metric using at least one of the one or more transmitted downlink beams and at least one of the one or more transmitted uplink beams transmitted by a downstream node served by the serving base station;

[0120] determining the channel quality metric based at least in part on the one or more parameters;

[0121] determining a configuration for communicating with the downstream node based at least in part on the channel quality metric; and

[0122] Communicating with the downstream node via the repeater based on the configuration.

[0123] 10. A method as described in Example 9, wherein determining the configuration includes: determining at least one of a transmit beam, a receive beam, a transmit power, a receive power, a data rate, a modulation and coding scheme (MCS), an antenna rank, or resources for communicating with the downstream node.

[0124] 11. A method as described in either Example 9 or 10, wherein the one or more parameters correspond to downlink signal measurements of the at least one downlink beam and uplink signal measurements of the at least one uplink beam.

[0125] 12. The method of Example 11, wherein the one or more parameters include raw measurements of the downlink signal measurement and the uplink signal measurement.

[0126] 13. A method as described in Example 12, wherein the one or more parameters include an estimated channel quality metric for a beam combination comprising the at least one downlink beam and the at least one uplink beam, wherein the estimated channel quality metric corresponds to the downlink signal measurement and the uplink signal measurement.

[0127] 14. The method of any one of Examples 9 to 13, wherein the one or more parameters include radio frequency parameters of a radio at the repeater.

[0128] 15. A method as described in Example 14, wherein the one or more parameters include at least one of a noise figure (NF), a coupling metric, a maximum power output, a switching latency for switching the transceiver from transmit to receive or from receive to transmit, a switching latency for switching the transceiver between uplink and downlink communication directions, a latency for steering a transmit or receive beam at the transceiver, or a power gain of the radio at the repeater.

[0129] 16. The method of any one of Examples 9 to 15, further comprising: transmitting a measurement configuration to the repeater, the measurement configuration indicating information for measuring at least one of the multiple transmitted downlink beams or the one or more transmitted uplink beams.

[0130] 17. The method of any one of Examples 9 to 16, further comprising: transmitting a reporting configuration to the repeater, the reporting configuration indicating at least one of the one or more parameters to be received or the time during which the one or more parameters are to be received, wherein receiving the one or more parameters is based on the reporting configuration.

[0131] 18. A method as described in any of Examples 9 to 17, wherein determining the configuration includes: determining a modulation and coding scheme (MCS) for transmitting communication, and wherein transmitting the communication includes scheduling the downstream node for uplink or downlink communication based on the MCS.

[0132] 19. An apparatus for wireless communication, comprising:

[0133] transceiver;

[0134] a memory configured to store instructions; and

[0135] one or more processors communicatively coupled to the transceiver and the memory, wherein the one or more processors are configured to:

[0136] receiving one or more transmitted downlink beams from a serving base station;

[0137] receiving one or more transmitted uplink beams from a downstream node served by the serving base station; and

[0138] One or more parameters related to determining a channel quality metric using at least the one or more transmitted downlink beams and the one or more transmitted uplink beams are communicated to the serving base station.

[0139] 20. The apparatus of example 19, wherein the one or more processors are further configured to:

[0140] measuring a downlink signal measurement for at least one of the one or more transmitted downlink beams; and

[0141] measuring an uplink signal measurement for at least one of the one or more transmitted uplink beams,

[0142] Wherein the one or more processors are configured to transmit the one or more parameters to include raw measurements of the downlink signal measurement and the uplink signal measurement.

[0143] 21. In the apparatus of Example 20, the one or more processors are further configured to estimate an estimated channel quality metric of a beam combination comprising the at least one downlink beam and the at least one uplink beam based on the downlink signal measurement and the uplink signal measurement, wherein the one or more processors are configured to transmit the one or more parameters to include the estimated channel quality metric of the beam combination.

[0144] 22. The apparatus of any one of Examples 19 to 21, wherein the one or more parameters include radio frequency parameters of a radio at the repeater.

[0145] 23. An apparatus as described in Example 22, wherein the one or more processors are configured to transmit the one or more parameters to include at least one of a noise figure (NF), a coupling metric, a maximum power output, a switching wait time for switching the transceiver from transmit to receive or from receive to transmit, a switching wait time for switching the transceiver between uplink and downlink communication directions, a wait time for directing a transmit or receive beam at the transceiver, or a power gain of the radio at the repeater.

[0146] 24. In the apparatus of any one of Examples 19 to 23, the one or more processors are further configured to: receive a measurement configuration from the serving base station, the measurement configuration indicating information for measuring at least one of the one or more transmitted downlink beams or the one or more transmitted uplink beams.

[0147] 25. The apparatus of Example 24, wherein the one or more processors are further configured to: instruct the downstream node to transmit the plurality of transmitted uplink beams based on the measurement configuration.

[0148] 26. An apparatus as described in any of Examples 19 to 25, wherein the one or more processors are further configured to: receive a reporting configuration from the serving base station, the reporting configuration indicating at least one of the one or more parameters to be transmitted or the time during which the one or more parameters are to be transmitted, wherein the one or more processors are configured to transmit the one or more parameters based on the reporting configuration.

[0149] 27. An apparatus for wireless communication, comprising:

[0150] transceiver;

[0151] a memory configured to store instructions; and

[0152] one or more processors communicatively coupled to the transceiver and the memory, wherein the one or more processors are configured to:

[0153] transmitting one or more transmitted downlink beams;

[0154] receiving, from the relay, one or more parameters related to determining a channel quality metric using at least one of the one or more transmitted downlink beams and at least one of the one or more transmitted uplink beams transmitted by a downstream node served by the serving base station;

[0155] determining the channel quality metric based at least in part on the one or more parameters;

[0156] determining a configuration for communicating with the downstream node based at least in part on the channel quality metric; and

[0157] Communicating with the downstream node via the repeater based on the configuration.

[0158] 28. An apparatus as described in Example 27, wherein the one or more processors are configured to determine the configuration based at least in part on determining at least one of a transmit beam, a receive beam, a transmit power, a receive power, a data rate, a modulation and coding scheme (MCS), an antenna rank, or resources for communicating with the downstream node.

[0159] 29. An apparatus as described in either Example 27 or 28, wherein the one or more parameters correspond to downlink signal measurements of the at least one downlink beam and uplink signal measurements of the at least one uplink beam.

[0160] 30. The apparatus of Example 29, wherein the one or more parameters include raw measurements of the downlink signal measurement and the uplink signal measurement.

[0161] 31. An apparatus for wireless communication comprising means for performing one or more of the methods of any of Examples 1 to 18.

[0162] 32. A computer-readable medium comprising code executable by one or more processors for wireless communication, the code comprising code for performing one or more of the methods of any of Examples 1 to 18.

Claims

1. A method for wireless communication, comprising: receiving, at the repeater, one or more transmitted downlink beams from the serving base station; receiving, at the relay, one or more transmitted uplink beams from a downstream node served by the serving base station; as well as One or more parameters related to determining a channel quality metric using at least a first metric of the one or more transmitted downlink beams measured at the repeater and at least a second metric of the one or more transmitted uplink beams measured at the repeater are transmitted to the serving base station.

2. The method of claim 1, further comprising: measuring a downlink signal measurement as the first metric for at least one of the one or more transmitted downlink beams; as well as measuring an uplink signal measurement for at least one of the one or more transmitted uplink beams as the second metric; The transmitting of the one or more parameters includes transmitting raw measurements of the downlink signal measurement and the uplink signal measurement to the serving base station.

3. The method of claim 2, further comprising: An estimated channel quality metric of a beam combination comprising the at least one downlink beam and the at least one uplink beam is estimated based on the downlink signal measurement and the uplink signal measurement, wherein transmitting the one or more parameters comprises transmitting the estimated channel quality metric of the beam combination to the serving base station. The method of claim 1 , wherein the one or more parameters include radio frequency parameters of a radio at the repeater.

5. The method of claim 4 , wherein transmitting the one or more parameters comprises transmitting to the serving base station at least one of a noise figure (NF), a coupling metric, a maximum power output, a switching latency for switching a transceiver from transmit to receive or from receive to transmit, a switching latency for switching the transceiver between uplink and downlink communication directions, a latency for steering a transmit or receive beam at the transceiver, or a power gain of a radio at the repeater.

6. The method of claim 1, further comprising: A measurement configuration is received from the serving base station, the measurement configuration indicating information for measuring at least one of the one or more transmitted downlink beams or the one or more transmitted uplink beams.

7. The method of claim 6, further comprising: The downstream node is instructing to transmit the one or more transmitted uplink beams based on the measurement configuration.

8. The method of claim 1, further comprising: A reporting configuration is received from the serving base station, the reporting configuration indicating at least one of the one or more parameters to be transmitted or a time during which the one or more parameters are to be transmitted, wherein transmitting the one or more parameters is based on the reporting configuration.

9. A method for wireless communication, comprising: transmitting, by a serving base station, one or more transmitted downlink beams; receiving, from a relay, one or more parameters related to determining a channel quality metric using at least a first metric of at least one of the one or more transmitted downlink beams measured at the relay and at least a second metric of at least one of the one or more transmitted uplink beams measured at the relay and transmitted by a downstream node served by the serving base station; as well as Communicating with the downstream node via the relay using a configuration based at least in part on the channel quality metric.

10. The method of claim 9, wherein the configuration is further based at least in part on at least one of a transmit beam, a receive beam, transmit power, receive power, a data rate, a modulation and coding scheme (MCS), an antenna rank, or resources used to communicate with the downstream node.

11. The method of claim 9, wherein the one or more parameters correspond to a downlink signal measurement of the at least one downlink beam and an uplink signal measurement of the at least one uplink beam.

12. The method of claim 11, wherein the one or more parameters include raw measurements of the downlink signal measurements and the uplink signal measurements.

13. The method of claim 12, wherein the one or more parameters comprise an estimated channel quality metric for a beam combination comprising the at least one downlink beam and the at least one uplink beam, wherein the estimated channel quality metric corresponds to the downlink signal measurement and the uplink signal measurement.

14. The method of claim 9, wherein the one or more parameters include radio frequency parameters of a radio at the repeater.

15. The method of claim 14, wherein the one or more parameters include at least one of a noise figure (NF), a coupling metric, a maximum power output, a switching latency for switching a transceiver from transmit to receive or from receive to transmit, a switching latency for switching the transceiver between uplink and downlink communication directions, a latency for steering a transmit or receive beam at the transceiver, or a power gain of a radio at the repeater.

16. The method of claim 9, further comprising: A measurement configuration is transmitted to the relay, the measurement configuration indicating information for measuring at least one of the one or more transmitted downlink beams or the one or more transmitted uplink beams.

17. The method of claim 9, further comprising: A reporting configuration is transmitted to the relay, the reporting configuration indicating at least one of the one or more parameters to be received or a time during which the one or more parameters are to be received, wherein receiving the one or more parameters is based on the reporting configuration.

18. The method of claim 9, wherein the configuring is further based at least in part on a modulation and coding scheme (MCS) used to transmit communications, and communicating with the downstream node comprises scheduling the downstream node for uplink or downlink communications based on the MCS.

19. An apparatus for wireless communication, comprising: transceiver; a memory configured to store instructions; as well as one or more processors communicatively coupled to the transceiver and the memory, wherein the one or more processors are configured to: receiving one or more transmitted downlink beams from a serving base station; receiving one or more transmitted uplink beams from a downstream node served by the serving base station; as well as One or more parameters related to determining a channel quality metric using at least a first metric of the one or more transmitted downlink beams measured at the device and a second metric of the one or more transmitted uplink beams measured at the device are transmitted to the serving base station.

20. The apparatus of claim 19, wherein the one or more processors are further configured to: measuring a downlink signal measurement as the first metric for at least one of the one or more transmitted downlink beams; and measuring an uplink signal measurement for at least one of the one or more transmitted uplink beams as the second metric, Wherein the one or more processors are configured to transmit the one or more parameters to include raw measurements of the downlink signal measurements and the uplink signal measurements.

21. The apparatus of claim 20, wherein the one or more processors are further configured to estimate an estimated channel quality metric of a beam combination comprising the at least one downlink beam and the at least one uplink beam based on the downlink signal measurement and the uplink signal measurement, wherein the one or more processors are configured to transmit the one or more parameters to include the estimated channel quality metric of the beam combination.

22. The apparatus of claim 19, wherein the one or more parameters include radio frequency parameters of a radio at the apparatus.

23. The apparatus of claim 22, wherein the one or more processors are configured to transmit the one or more parameters to include at least one of a noise figure (NF), a coupling metric, a maximum power output, a switching latency for switching a transceiver from transmit to receive or from receive to transmit, a switching latency for switching the transceiver between uplink and downlink communication directions, a latency for steering a transmit or receive beam at the transceiver, or a power gain of a radio at the apparatus.

24. The apparatus of claim 19, wherein the one or more processors are further configured to receive a measurement configuration from the serving base station, the measurement configuration indicating information for measuring at least one of the one or more transmitted downlink beams or the one or more transmitted uplink beams.

25. The apparatus of claim 24, wherein the one or more processors are further configured to instruct the downstream node to transmit the one or more transmitted uplink beams based on the measurement configuration.

26. The apparatus of claim 19, wherein the one or more processors are further configured to: receive a reporting configuration from the serving base station, the reporting configuration indicating at least one of the one or more parameters to be transmitted or a time during which the one or more parameters are to be transmitted, wherein the one or more processors are configured to transmit the one or more parameters based on the reporting configuration.

27. An apparatus for wireless communication, comprising: transceiver; a memory configured to store instructions; as well as one or more processors communicatively coupled to the transceiver and the memory, wherein the one or more processors are configured to: transmitting one or more transmitted downlink beams; receiving, from a relay, one or more parameters related to determining a channel quality metric using at least a first metric of at least one of the one or more transmitted downlink beams measured at the relay and at least a second metric of at least one of the one or more transmitted uplink beams measured at the relay and transmitted by a downstream node served by the apparatus; as well as Communicating with the downstream node via the relay using a configuration based at least in part on the channel quality metric.

28. The apparatus of claim 27, wherein the configuration is based at least in part on at least one of a transmit beam, a receive beam, transmit power, receive power, a data rate, a modulation and coding scheme (MCS), an antenna rank, or resources used to communicate with the downstream node.

29. The apparatus of claim 27, wherein the one or more parameters correspond to a downlink signal measurement of the at least one downlink beam and an uplink signal measurement of the at least one uplink beam.

30. The apparatus of claim 29, wherein the one or more parameters include raw measurements of the downlink signal measurements and the uplink signal measurements.

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