Dynamic forwarding configuration for mobile relays

Abstract

Certain aspects of the present disclosure provide techniques for dynamically updating a forwarding configuration of a mobile relay. An exemplary method for wireless communication at a relay includes modifying forwarding behavior based on a change in channel conditions of a communication link between the relay and a network entity; and forwarding one or more communications between the network entity and a user equipment (UE) according to the modified forwarding behavior.

Description

[0001] This application claims priority to U.S. patent application No. 18 / 164,456, filed on February 3, 2023, which is hereby incorporated by reference into this application. Background Art Technical Field

[0002] Aspects of the present disclosure relate to wireless communications, and more particularly, to techniques for dynamically updating a forwarding configuration of a mobile relay.

[0003] Related technical description

[0004] Wireless communication systems are widely deployed to provide various telecommunication services, such as telephony, video, data, messaging, broadcasts, or other similar types of services. These wireless communication systems may employ multiple-access technologies capable of supporting communication with multiple users by sharing available wireless communication system resources with the multiple users.

[0005] Despite the tremendous technological advancements in wireless communication systems over the years, challenges remain. For example, complex and dynamic environments can still attenuate or block signals between wireless transmitters and wireless receivers. Consequently, there is a continuing desire to improve the technical performance of wireless communication systems, including, for example, improving the speed and data carrying capacity of communications, improving the efficiency of shared communication media usage, reducing the power used by transmitters and receivers when performing communications, improving the reliability of wireless communications, avoiding redundant transmission and / or reception and related processing, improving the coverage area of ​​wireless communications, increasing the number and types of devices that can access wireless communication systems, increasing the ability of different types of devices to communicate with each other, and increasing the number and types of wireless communication media available for use. Consequently, there is a need for further improvements in wireless communication systems to overcome the aforementioned technical challenges and others. Summary of the Invention

[0006] One aspect provides a method for wireless communication at a relay, comprising: modifying a forwarding behavior based on a change in a channel condition of a communication link between the relay and a network entity; and forwarding one or more communications between the network entity and a user equipment (UE) according to the modified forwarding behavior.

[0007] Another aspect provides a method for wireless communication by a network entity. The method includes: outputting a configuration for transmission to a relay, wherein the configuration configures the relay to perform at least one of the following operations: detecting a change in a channel condition of a communication link between the relay and the network entity; modifying a forwarding behavior of the relay based on the change in the channel condition; and outputting a communication with a user equipment (UE) as an intended recipient for transmission to the relay.

[0008] Other aspects provide: an apparatus operable to, configured to, or otherwise adapted to perform any one or more of the aforementioned methods and / or those described elsewhere herein; a non-transitory computer-readable medium comprising instructions that, when executed by a processor of the apparatus, cause the apparatus to perform the aforementioned methods and those described elsewhere herein; a computer program product embodied on a computer-readable storage medium comprising code for performing the aforementioned methods and those described elsewhere herein; and / or an apparatus comprising components for performing the aforementioned methods and those described elsewhere herein. By way of example, an apparatus may comprise a processing system, a device having a processing system, or processing systems cooperating through one or more networks.

[0009] For purposes of illustration, the following description and drawings set forth certain features. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The accompanying drawings depict certain features of the various aspects described herein and should not be considered as limiting the scope of the disclosure.

[0011] Figure 1 An example wireless communication network is depicted.

[0012] Figure 2 An example disaggregated base station architecture is depicted.

[0013] Figure 3 Aspects of an example base station and example user equipment are depicted.

[0014] Figure 4A 、 Figure 4B 、 Figure 4C and Figure 4D Various example aspects of data structures for a wireless communication network are described.

[0015] Figure 5 A block diagram of an example wireless system deploying repeaters is depicted.

[0016] Figure 6 Illustrate an example scenario for deploying a repeater.

[0017] Figure 7 An example wireless system deploying repeaters is illustrated.

[0018] Figure 8 is a block diagram of an example architecture of a repeater.

[0019] Figure 9 Depicted is an example logical architecture of a Network Controlled Repeater (NCR) in accordance with aspects of the present disclosure.

[0020] Figure 10A and Figure 10B An example UE mobility scenario is illustrated where the UE interacts with a cell without involving a relay.

[0021] Figure 11A and Figure 11B An example UE mobility scenario is illustrated where the UE and relay move together through cells.

[0022] Figure 12 Depicted is a process flow for communication in a network between network entities, a relay, and a UE.

[0023] Figure 13 A method for wireless communication is described.

[0024] Figure 14 A method for wireless communication is described.

[0025] Figure 15 Aspects of an example communication device are depicted.

[0026] Figure 16 Aspects of an example communication device are depicted. DETAILED DESCRIPTION

[0027] Aspects of the present disclosure provide apparatus, methods, processing systems, and computer-readable media for dynamically updating a forwarding configuration of a mobile relay.

[0028] A repeater can improve the coverage provided by a network by enabling signals from a network entity to reach areas that the signals would otherwise not be able to reach, for example, by being blocked by objects such as buildings or trees. A repeater can be mobile or stationary and can operate in an autonomous mode or a network controlled mode. A repeater operating in a network controlled mode may be referred to as a network controlled repeater (NCR). As a mobile repeater moves within a cell, the repeater may move out of the coverage area of ​​a first beam from the network entity (e.g., a beam used to transmit synchronization signal blocks (SSBs)) and into the coverage area of ​​a second beam. When a UE and the repeater move together (e.g., both are in a vehicle), the UE observes the SSB beam changes through the repeater because the repeater forwards the SSB beam to the UE as the repeater and UE move together. Changing the beam sent to the UE may enable the repeater to improve the signal quality experienced by the UE and enable the repeater to save power.

[0029] In various aspects of the present disclosure, a relay may modify forwarding behavior (e.g., forwarding an SSB beam to a UE) based on changes in channel conditions of a communication link between the relay and a network entity. Thus, a relay traveling with a UE may selectively change beam forwarding to the UE based on signal conditions detected by the relay to the network entity. For example, the relay may activate or deactivate forwarding, modify beam-specific amplification gain, modify access beam configuration, modify access beam scanning patterns, or stop transmitting a beam.

[0030] A repeater can provide improved SSB beam coverage to a UE by modifying the repeater's forwarding behavior in response to detecting a change in the channel conditions of a link to a network entity. The improved SSB beam coverage can include the repeater selectively forwarding only strong beams, thereby equalizing the strength of the beams observed by the UE. The repeater can also save power by modifying the repeater's forwarding behavior.

[0031] Introduction to wireless communication networks

[0032] The techniques and methods described herein can be used in various wireless communication networks. Although various aspects may be described herein using terms typically associated with 3G, 4G, and / or 5G wireless technologies, various aspects of the present disclosure may also be applicable to other communication systems and standards not explicitly mentioned herein.

[0033] Figure 1 An example of a wireless communication network 100 is depicted in which various aspects described herein may be implemented.

[0034] Generally speaking, the wireless communication network 100 includes various network entities (alternatively, network elements or network nodes). A network entity is typically a communication device and / or a communication function performed by a communication device (e.g., user equipment (UE), base station (BS), a component of a BS, a server, etc.). For example, various functions of a network and various devices associated with and interacting with the network can be considered network entities. In addition, the wireless communication network 100 includes terrestrial aspects, such as ground-based network entities (e.g., BS 102), and non-terrestrial aspects, such as satellites 140 and aircraft 145, which may include airborne network entities (e.g., one or more BSs) capable of communicating with other network elements (e.g., ground BSs) and user equipment.

[0035] In the depicted example, the wireless communication network 100 includes a BS 102, a UE 104, and one or more core networks (such as an evolved packet core (EPC) 160 and a 5G core (5GC) network 190) that interoperate to provide communication services over various communication links (including wired and wireless links).

[0036] Figure 1 Various example UEs 104 are depicted, which may more generally include: a cellular phone, a smartphone, a Session Initiation Protocol (SIP) phone, a laptop computer, a personal digital assistant (PDA), a satellite radio, a global positioning system, a multimedia device, a video device, a digital audio player, a camera, a game console, a tablet computer, 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, an Internet of Things (IoT) device, an always-on (AON) device, an edge processing device, or other similar devices. A UE 104 may also be more generally referred to as a mobile device, a wireless device, a wireless communication device, a station, a mobile station, a subscriber station, a mobile subscriber station, a mobile unit, a subscriber unit, a wireless unit, a remote unit, a remote device, an access terminal, a mobile terminal, a wireless terminal, a remote terminal, a handset, and others.

[0037] BS 102 wirelessly communicates with (e.g., transmits signals to or receives signals from) UE 104 via communication link 120. Communication link 120 between BS 102 and UE 104 may include uplink (UL) (also known as a reverse link) transmissions from UE 104 to BS 102 and / or downlink (DL) (also known as a forward link) transmissions from BS 102 to UE 104. In various aspects, communication link 120 may employ multiple-input multiple-output (MIMO) antenna technology, including spatial multiplexing, beamforming, and / or transmit diversity.

[0038] BSs 102 may generally include: a NodeB, an enhanced NodeB (eNB), a next generation enhanced NodeB (ng-eNB), a next generation NodeB (gNB or gNodeB), an access point, a base transceiver station, a radio base station, a radio transceiver, transceiver functionality, a transmit / receive point, and / or the like. Each of BSs 102 may provide communication coverage for a respective geographic coverage area 110, which may sometimes be referred to as a cell and which may overlap in some cases (e.g., a small cell 102' may have a coverage area 110' that overlaps with a coverage area 110 of a macro cell). For example, a BS may provide communication coverage for a macro cell (covering a relatively large geographic area), a pico cell (covering a relatively small geographic area, such as a stadium), a femto cell (covering a relatively small geographic area, such as a home), and / or other types of cells.

[0039] Although BS102 is depicted in various aspects as a single communication device, BS102 can be implemented in various configurations. For example, one or more components of the base station may be decomposed, including a central unit (CU), one or more distributed units (DUs), one or more radio units (RUs), a near real-time (near-RT) RAN intelligent controller (RIC), or a non-real-time (non-RT) RIC, to name a few examples. In another example, various aspects of the base station may be virtualized. More generally, a base station (e.g., BS102) may include components located at a single physical location or components located at various physical locations. In examples where the base station includes components located at various physical locations, the various components may each perform a function such that the various components collectively implement functionality similar to that of a base station located at a single physical location. In some aspects, a base station including components located at various physical locations may be referred to as a decomposed radio access network architecture (such as an open RAN (O-RAN) or virtualized RAN (VRAN) architecture). Figure 2 An example decomposed base station architecture is depicted and described.

[0040] Different BSs 102 within the wireless communication network 100 may also be configured to support different radio access technologies (such as 3G, 4G, and / or 5G). For example, a BS 102 configured for 4G LTE (collectively referred to as the Evolved Universal Mobile Telecommunications System (UMTS) Terrestrial Radio Access Network (E-UTRAN)) may interface with the EPC 160 via a first backhaul link 132 (e.g., an S1 interface). A BS 102 configured for 5G (e.g., 5G NR or Next Generation RAN (NG-RAN)) may interface with the 5GC 190 via a second backhaul link 184. The BSs 102 may communicate with each other directly or indirectly (e.g., through the EPC 160 or the 5GC 190) over a third backhaul link 134 (e.g., an X2 interface), which may be wired or wireless.

[0041] The wireless communication network 100 may subdivide the electromagnetic spectrum into various categories, frequency bands, channels, or other characteristics. In some aspects, the subdivision is provided based on wavelength and frequency, where frequency may also be referred to as a carrier, subcarrier, channel, tone, or subband. For example, 3GPP currently defines Frequency Range 1 (FR1) as including 410 MHz-7125 MHz, which is often (interchangeably) referred to as "sub-6 GHz." Similarly, 3GPP currently defines Frequency Range 2 (FR2) as including 24,250 MHz-71,000 MHz, which is sometimes (interchangeably) referred to as "millimeter wave" ("mmW" or "mmWave"). In some cases, FR2 may be further defined according to sub-ranges, such as a first sub-range FR2-1 including 24,250 MHz-52,600 MHz and a second sub-range FR2-2 including 52,600 MHz-71,000 MHz. A base station configured to communicate using mmWave / near mmWave radio bands (eg, a mmWave base station such as BS 180 ) may utilize beamforming (eg, 182 ) with a UE (eg, 104 ) to improve path loss and range.

[0042] The communication link 120 between the BS 102 and, for example, the UE 104 may be over one or more carriers, which may have different bandwidths (e.g., 5 MHz, 10 MHz, 15 MHz, 20 MHz, 100 MHz, 400 MHz, and / or other MHz) and may be aggregated in various ways. The 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 for DL ​​compared to UL).

[0043] Communications using higher frequency bands may have higher path loss and shorter range than communications at lower frequencies. Therefore, some base stations (e.g. Figure 1180) may utilize beamforming 182 with UE 104 to improve path loss and range. For example, BS 180 and UE 104 may each include multiple antennas, such as antenna elements, antenna panels, and / or antenna arrays, to facilitate beamforming. In some cases, BS 180 may transmit beamformed signals to UE 104 in one or more transmit directions 182′. UE 104 may receive beamformed signals from BS 180 in one or more receive directions 182″. UE 104 may also transmit beamformed signals to BS 180 in one or more transmit directions 182″. BS 180 may also receive beamformed signals from UE 104 in one or more receive directions 182′. BS 180 and UE 104 may then perform beam training to determine the best receive direction and transmit direction for each of BS 180 and UE 104. Notably, the transmit direction and receive direction of BS 180 may be the same or may be different. Similarly, the transmit direction and receive direction of UE 104 may or may not be the same.

[0044] Wireless communication network 100 also includes a Wi-Fi AP 150 that communicates with Wi-Fi stations (STAs) 152 via communication links 154 in, for example, the 2.4 GHz and / or 5 GHz unlicensed spectrum.

[0045] Some of the UEs 104 may communicate with each other using a device-to-device (D2D) communication link 158. 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), a physical sidelink control channel (PSCCH), and / or a physical sidelink feedback channel (PSFCH).

[0046] The EPC 160 may include various functional components, including 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 / or a packet data network (PDN) gateway 172, such as in the depicted example. The MME 162 may communicate with a home subscriber server (HSS) 174. The MME 162 is a control node that handles signaling between the UE 104 and the EPC 160. Generally, the MME 162 provides bearer and connection management.

[0047] Generally, user Internet Protocol (IP) packets are delivered through the Serving Gateway 166, which is itself connected to the PDN Gateway 172. The PDN Gateway 172 provides UE IP address allocation and other functions. The PDN Gateway 172 and the BM-SC 170 are connected to the IP services 176, which may include, for example, the Internet, an intranet, an IP Multimedia Subsystem (IMS), packet switched (PS) streaming services, and / or other IP services.

[0048] BM-SC 170 can provide functionality for MBMS user service provisioning and delivery. BM-SC 170 can serve as the entry point for content provider MBMS delivery, can be used to authorize and initiate MBMS bearer services within a public land mobile network (PLMN), and / or can be used to schedule MBMS delivery. MBMS Gateway 168 can be used to distribute MBMS services to BSs 102 belonging to a Multicast Broadcast Single Frequency Network (MBSFN) area broadcasting a specific service, and / or can be responsible for session management (start / stop) and collecting eMBMS-related charging information.

[0049] 5GC 190 may include various functional components, including: access and mobility management function (AMF) 192, other AMFs 193, session management function (SMF) 194, and user plane function (UPF) 195. AMF 192 may communicate with unified data management (UDM) 196.

[0050] AMF 192 is a control node that handles signaling between UE 104 and 5GC 190. AMF 192 provides, for example, Quality of Service (QoS) flow and session management.

[0051] Internet Protocol (IP) packets are passed through UPF 195, which connects to IP services 197 and provides IP address allocation for UEs and other functions for 5GC 190. IP services 197 may include, for example, the Internet, intranet, IMS, PS streaming services, and / or other IP services.

[0052] In various aspects, a network entity or network node may be implemented as a converged base station, a decomposed base station, a component of a base station, an integrated access and backhaul (IAB) node, a relay node, a sidelink node, to name a few examples.

[0053] Figure 2An example disaggregated base station 200 architecture is depicted. The disaggregated base station 200 architecture may include one or more central units (CUs) 210 that may communicate directly with a core network 220 via a backhaul link, or indirectly with the core network 220 through one or more disaggregated base station units, such as a near real-time (near-RT) RAN intelligent controller (RIC) 225 via an E2 link, or a non-real-time (non-RT) RIC 215 associated with a service management and orchestration (SMO) framework 205, or both. The CUs 210 may communicate with one or more distributed units (DUs) 230 via corresponding midhaul links, such as an F1 interface. The DUs 230 may communicate with one or more radio units (RUs) 240 via corresponding fronthaul links. The RUs 240 may communicate with corresponding UEs 104 via one or more radio frequency (RF) access links. In some implementations, a UE 104 may be served simultaneously by multiple RUs 240.

[0054] Each of the units (e.g., CU 210, DU 230, RU 240, as well as near-RT RIC 225, non-RT RIC 215, and SMO framework 205) may include or be coupled to one or more interfaces configured to receive or transmit signals, data, or information (collectively, signals) via a wired transmission medium or a wireless transmission medium. Each of the units, or an associated processor or controller that provides instructions to the communication interface of the unit, may be configured to communicate with one or more of the other units via the transmission medium. For example, the units may include a wired interface configured to receive or transmit signals to one or more of the other units via the wired transmission medium. Additionally or alternatively, the units may include a wireless interface that may include a receiver, transmitter, or transceiver (such as a radio frequency (RF) transceiver) configured to receive signals or transmit signals to one or more of the other units over the wireless transmission medium, or both.

[0055] In some aspects, the CU 210 may host one or more higher layer control functions. Such control functions may include radio resource control (RRC), packet data convergence protocol (PDCP), service data adaptation protocol (SDAP), etc. Each control function may be implemented using an interface that is configured to communicate signals with other control functions hosted by the CU 210. The CU 210 may be configured to handle user plane functionality (e.g., central unit-user plane (CU-UP)), control plane functionality (e.g., central unit-control plane (CU-CP)), or a combination thereof. In some specific implementations, the CU 210 may be logically split into one or more CU-UP units and one or more CU-CP units. When implemented in an O-RAN configuration, the CU-UP unit may communicate bidirectionally with the CU-CP unit via an interface (such as an E1 interface). As needed, the CU 210 may be implemented to communicate with the DU 230 for network control and signaling.

[0056] The DU 230 may correspond to a logical unit that includes one or more base station functions for controlling the operation of one or more RUs 240. In some aspects, the DU 230 may host one or more of a radio link control (RLC) layer, a medium access control (MAC) layer, and one or more higher physical (PHY) layers (such as modules for forward error correction (FEC) encoding and decoding, scrambling, modulation and demodulation, etc.) based at least in part on a functional split, such as those defined by the 3rd Generation Partnership Project (3GPP). In some aspects, the DU 230 may also host one or more lower PHY layers. Each layer (or module) may be implemented using an interface configured to communicate signals with other layers (and modules) hosted by the DU 230 or with control functions hosted by the CU 210.

[0057] Lower layer functionality may be implemented by one or more RUs 240. In some deployments, a RU 240 controlled by a DU 230 may correspond to a logical node that hosts RF processing functionality or low PHY layer functionality (such as performing Fast Fourier Transform (FFT), Inverse FFT (iFFT), digital beamforming, Physical Random Access Channel (PRACH) extraction and filtering, etc.), or both, based at least in part on a functional split (such as a lower layer functional split). In such an architecture, the RU 240 may be implemented to handle over-the-air (OTA) communications with one or more UEs 104. In some implementations, real-time and non-real-time aspects of control plane and user plane communications with the RU 240 may be controlled by the corresponding DU 230. In some scenarios, this configuration may enable the implementation of the DU 230 and CU 210 in a cloud-based RAN architecture (such as a vRAN architecture).

[0058] The SMO framework 205 can be configured to support RAN deployment and provisioning of both non-virtualized and virtualized network elements. For non-virtualized network elements, the SMO framework 205 can be configured to support the deployment of dedicated physical resources for RAN coverage requirements, which can be managed via an operations and maintenance interface (such as the O1 interface). For virtualized network elements, the SMO framework 205 can be configured to interact with a cloud computing platform (such as Open Cloud (O-Cloud) 290) to perform network element lifecycle management (such as instantiating virtualized network elements) via a cloud computing platform interface (such as the O2 interface). Such virtualized network elements may include, but are not limited to, the CU 210, DU 230, RU 240, and near-RT RIC 225. In some implementations, the SMO framework 205 can communicate with hardware aspects of the 4G RAN (such as the Open eNB (O-eNB) 211) via the O1 interface. Additionally, in some implementations, the SMO framework 205 can communicate directly with one or more RUs 240 via the O1 interface. The SMO framework 205 may also include a non-RT RIC 215 configured to support the functionality of the SMO framework 205 .

[0059] The non-RT RIC 215 can be configured to include logic functions that enable non-real-time control and optimization of RAN elements and resources, artificial intelligence / machine learning (AI / ML) workflows including model training and updating, or policy-based guidance of applications / features in the near-RT RIC 225. The non-RT RIC 215 can be coupled to or in communication with the near-RT RIC 225 (e.g., via an A1 interface). The near-RT RIC 225 can be configured to include logic functions that enable near-real-time control and optimization of RAN elements and resources through data collection and actions over an interface (e.g., via an E2 interface) that connects one or more CUs 210, one or more DUs 230, or both, and the O-eNB with the near-RT RIC 225.

[0060] In some implementations, the non-RT RIC 215 may receive parameters or external enrichment information from an external server in order to generate an AI / ML model to be deployed in the near-RT RIC 225. Such information may be utilized by the near-RT RIC 225 and may be received from a non-network data source or from a network function at the SMO framework 205 or the non-RT RIC 215. In some examples, the non-RT RIC 215 or the near-RT RIC 225 may be configured to tune RAN behavior or performance. For example, the non-RT RIC 215 may monitor long-term trends and patterns in performance and employ AI / ML models to perform corrective actions through the SMO framework 205 (such as via reconfiguration of O1) or via the creation of RAN management policies (such as A1 policies).

[0061] Figure 3 Aspects of an example BS 102 and UE 104 are depicted.

[0062] In general, BS 102 includes various processors (e.g., 320, 330, 338, and 340), antennas 334a-334t (collectively 334), transceivers 332a-332t (collectively 332) including modulators and demodulators, and other aspects that enable wireless transmission of data (e.g., data source 312) and wireless reception of data (e.g., data sink 339). For example, BS 102 can transmit and receive data between BS 102 and UE 104. BS 102 includes a controller / processor 340 that can be configured to implement various functions described herein related to wireless communication.

[0063] Generally speaking, the UE 104 includes various processors (e.g., 358, 364, 366, and 380), antennas 352a-352r (collectively 352), transceivers 354a-354r (collectively 354) including modulators and demodulators, and other aspects that enable wireless transmission of data (e.g., retrieved from a data source 362) and wireless reception of data (e.g., provided to a data sink 360). The UE 104 includes a controller / processor 380 that can be configured to implement various functions described herein related to wireless communications.

[0064] Regarding example downlink transmissions, BS 102 includes a transmit processor 320 that can receive data from a data source 312 and control information from a controller / processor 340. The control information can be for a physical broadcast channel (PBCH), a physical control format indicator channel (PCFICH), a physical HARQ indicator channel (PHICH), a physical downlink control channel (PDCCH), a group common PDCCH (GC PDCCH), and / or other. In some examples, the data can be for a physical downlink shared channel (PDSCH).

[0065] The transmit processor 320 may process (e.g., encode and symbol map) data and control information to obtain data symbols and control symbols, respectively. The transmit processor 320 may also generate reference symbols (such as for a primary synchronization signal (PSS), a secondary synchronization signal (SSS), a PBCH demodulation reference signal (DMRS), and a channel state information reference signal (CSI-RS)).

[0066] The transmit (TX) multiple-input multiple-output (MIMO) processor 330 may perform spatial processing (e.g., precoding) on ​​data symbols, control symbols, and / or reference symbols, as applicable, and may provide an output symbol stream to a modulator (MOD) in the transceivers 332a-332t. Each modulator in the transceivers 332a-332t may process a corresponding output symbol stream to obtain an output sample stream. Each modulator may further process (e.g., convert to analog, amplify, filter, and upconvert) the output sample stream to obtain a downlink signal. The downlink signals from the modulators in the transceivers 332a-332t may be transmitted via antennas 334a-334t, respectively.

[0067] To receive downlink transmissions, UE 104 includes antennas 352a-352r that can receive downlink signals from BS 102 and provide received signals to demodulators (DEMODs) in transceivers 354a-354r, respectively. Each demodulator in transceivers 354a-354r can condition (e.g., filter, amplify, downconvert, and digitize) a corresponding received signal to obtain input samples. Each demodulator can further process the input samples to obtain received symbols.

[0068] A MIMO detector 356 may obtain received symbols from all demodulators in transceivers 354a-354r, perform MIMO detection on the received symbols if applicable, and provide detected symbols. A receive processor 358 may process (e.g., demodulate, deinterleave, and decode) the detected symbols, provide decoded data for UE 104 to a data sink 360, and provide decoded control information to a controller / processor 380.

[0069] With respect to example uplink transmissions, the UE 104 also includes a transmit processor 364 that can receive and process data from a data source 362 (e.g., for a PUSCH) and control information from a controller / processor 380 (e.g., for a physical uplink control channel (PUCCH)). The transmit processor 364 can also generate reference symbols for reference signals (e.g., for a sounding reference signal (SRS)). The symbols from the transmit processor 364 can be pre-decoded by a TX MIMO processor 366, if applicable, further processed by a modulator in the transceivers 354a-354r (e.g., for SC-FDM), and transmitted to the BS 102.

[0070] At BS 102, uplink signals from UE 104 may be received by antennas 334 a-334 t, processed by demodulators in transceivers 332 a-332 t, detected by MIMO detector 336 if applicable, and further processed by a receive processor 338 to obtain decoded data and control information transmitted by UE 104. Receive processor 338 may provide the decoded data to a data sink 339 and the decoded control information to a controller / processor 340.

[0071] Memory 342 and memory 382 may store data and program codes for BS 102 and UE 104, respectively.

[0072] A scheduler 344 may schedule UEs for data transmission on the downlink and / or uplink.

[0073] In various aspects, the BS 102 may be described as transmitting and receiving various types of data associated with the methods described herein. In these contexts, "transmitting" may refer to various mechanisms for outputting data, such as from a data source 312, a scheduler 344, a memory 342, a transmit processor 320, a controller / processor 340, a TX MIMO processor 330, transceivers 332a-332t, antennas 334a-334t, and / or other aspects described herein. Similarly, "receiving" may refer to various mechanisms for obtaining data, such as from antennas 334a-334t, transceivers 332a-332t, an RX MIMO detector 336, a controller / processor 340, a receive processor 338, a scheduler 344, a memory 342, and / or other aspects described herein.

[0074] In various aspects, the UE 104 may also be described as sending and receiving various types of data associated with the methods described herein. In these contexts, "sending" may refer to various mechanisms for outputting data, such as from a data source 362, memory 382, ​​a transmit processor 364, a controller / processor 380, a TX MIMO processor 366, transceivers 354a-354t, antennas 352a-352t, and / or other aspects described herein. Similarly, "receiving" may refer to various mechanisms for obtaining data, such as from antennas 352a-352t, transceivers 354a-354t, an RX MIMO detector 356, a controller / processor 380, a receive processor 358, memory 382, ​​and / or other aspects described herein.

[0075] In some aspects, the processor may be configured to perform various operations (such as those associated with the methods described herein) and send (output) data to or receive (obtain) data from another interface configured to send or receive data, respectively.

[0076] Figure 4A 、 Figure 4B 、 Figure 4C and Figure 4D Describes a method for use in wireless communication networks such as Figure 1 Various aspects of the data structure of the wireless communication network 100).

[0077] Specifically, Figure 4A is a diagram 400 illustrating an example of a first subframe within a 5G (e.g., 5G NR) frame structure, Figure 4B is a diagram 430 illustrating an example of a DL channel within a 5G subframe, Figure 4C is a diagram 450 illustrating an example of a second subframe within a 5G frame structure, and Figure 4D FIG480 is a diagram illustrating an example of UL channels within a 5G subframe.

[0078] Wireless communication systems can utilize Orthogonal Frequency Division Multiplexing (OFDM) with a Cyclic Prefix (CP) on both the uplink and downlink. Such systems can also support half-duplex operation using Time Division Duplex (TDD). OFDM and Single Carrier Frequency Division Multiplexing (SC-FDM) will (for example, Figure 4B and Figure 4D The system bandwidth (as depicted in FIG) is divided into multiple orthogonal subcarriers. Each subcarrier can be modulated with data. Modulation symbols can be transmitted in the frequency domain using OFDM and / or in the time domain using SC-FDM.

[0079] The wireless communication frame structure may be frequency division duplex (FDD), where for a particular set of subcarriers, subframes within the set of subcarriers are dedicated to either DL or UL. The wireless communication frame structure may also be time division duplex (TDD), where for a particular set of subcarriers, subframes within the set of subcarriers are dedicated to both DL and UL.

[0080] exist Figure 4A and Figure 4C In the embodiment of the present invention, the wireless communication frame structure is TDD, where D is DL, U is UL, and X is flexibly used between DL / UL. The UE can be configured with a time slot format (dynamically configured by DL control information (DCI) or semi-statically / statically configured by radio resource control (RRC) signaling) through the received time slot format indicator (SFI). In the depicted example, the 10ms frame is divided into 10 equally sized 1ms subframes. Each subframe may include one or more time slots. In some examples, each time slot may include 7 or 14 symbols, depending on the time slot format. The subframe may also include micro slots, which typically have fewer symbols than a full time slot. Other wireless communication technologies may have different frame structures and / or different channels.

[0081] In certain aspects, the number of slots within a subframe is based on the slot configuration and parameter set. For example, for slot configuration 0, different parameter sets (μ) 0 through 6 allow for 1, 2, 4, 8, 16, 32, and 64 slots per subframe, respectively. For slot configuration 1, different parameter sets 0 through 2 allow for 2, 4, and 8 slots per subframe, respectively. Thus, for slot configuration 0 and parameter set μ, there are 14 symbols per slot and 2μ slots per subframe. The subcarrier spacing and symbol length / duration are a function of the parameter set. The subcarrier spacing may be equal to 2 μ × 15kHz, where μ is parameter set 0 to 6. Thus, parameter set μ=0 has a subcarrier spacing of 15kHz, and parameter set μ=6 has a subcarrier spacing of 960kHz. Symbol length / duration is inversely related to subcarrier spacing. Figure 4A 、 Figure 4B 、 Figure 4C and Figure 4D An example is provided for slot configuration 0 with 14 symbols per slot and parameter set μ = 2 with 4 slots per subframe. The slot duration is 0.25 ms, the subcarrier spacing is 60 kHz, and the symbol duration is approximately 16.67 μs.

[0082] like Figure 4A 、 Figure 4B 、 Figure 4C and Figure 4DAs depicted in FIG, a resource grid can be used to represent the frame structure. Each time slot includes a resource block (RB) (also called a physical RB (PRB)) extending over, for example, 12 consecutive subcarriers. The resource grid is divided into a plurality of resource elements (REs). The number of bits carried by each RE depends on the modulation scheme.

[0083] like Figure 4A As illustrated in FIG, some of the REs carry data for UEs (eg, Figure 1 and Figure 3 The RS may include a demodulation RS (DMRS) and / or a channel state information reference signal (CSI-RS) for channel estimation at the UE. The RS may also include a beamforming RS (BRS), a beam refinement RS (BRRS), and / or a phase tracking RS (PT-RS).

[0084] Figure 4B Examples of various DL channels within a subframe of a frame are illustrated. The Physical Downlink Control Channel (PDCCH) carries DCI within one or more Control Channel Elements (CCEs), each CCE comprising, for example, nine RE Groups (REGs), each REG comprising, for example, four consecutive REs in an OFDM symbol.

[0085] The Primary Synchronization Signal (PSS) may be in symbol 2 of a particular subframe of a frame. The PSS is transmitted by a UE (e.g., Figure 1 and Figure 3 104) is used to determine subframe / symbol timing and physical layer identification.

[0086] A Secondary Synchronization Signal (SSS) may be within symbol 4 of a specific subframe of a frame. The SSS is used by the UE to determine the physical layer cell identity group number and radio frame timing.

[0087] Based on the physical layer identifier and the physical layer cell identifier group number, the UE can determine the physical cell identifier (PCI). Based on the PCI, the UE can determine the location of the aforementioned DMRS. The physical broadcast channel (PBCH) carrying the master information block (MIB) can be logically grouped with the PSS and SSS to form a synchronization signal (SS) / PBCH block. The MIB provides the system frame number (SFN) and the number of RBs in the system bandwidth. The physical downlink shared channel (PDSCH) carries user data, broadcast system information not sent via the PBCH (such as the system information block (SIB)), and / or paging messages.

[0088] like Figure 4CAs illustrated in , some of the REs carry DMRS for channel estimation at the base station (indicated as R for a specific configuration, but other DMRS configurations are possible). The UE may send DMRS for PUCCH and DMRS for PUSCH. The PUSCH DMRS may be sent, for example, in the first or first two symbols of the PUSCH. The PUCCH DMRS may be sent in different configurations depending on whether a short PUCCH or a long PUCCH is sent and on the specific PUCCH format used. UE104 may send a sounding reference signal (SRS). The SRS may be sent, for example, in the last symbol of a subframe. The SRS may have a comb structure, and the UE may send the SRS on one of the comb structures in the comb structure. The SRS may be used by the base station for channel quality estimation to achieve frequency-dependent scheduling of the UL.

[0089] Figure 4D Examples of various UL channels within a subframe of a frame are illustrated. The PUCCH may be located at the position indicated in one configuration. The PUCCH carries uplink control information (UCI), such as scheduling requests, channel quality indicators (CQI), precoding matrix indicators (PMI), rank indicators (RI), and HARQ ACK / NACK feedback. The PUSCH carries data and may additionally be used to carry buffer status reports (BSRs), power headroom reports (PHRs), and / or UCI.

[0090] Overview of Repeaters

[0091] The next generation (5th generation (5G)) of wireless networks has set the goal of providing ultra-high data rates and supporting a wide range of application scenarios. Integrated access and backhaul (IAB) systems can help achieve these goals.

[0092] In an IAB system, a wireless backhaul solution is used to connect a cell to a core network using wired backhaul. The cell may be referred to as a relay or an IAB node. Some attractive features of the IAB system are support for multi-hop wireless backhaul, sharing of the same technology (e.g., New Radio (NR)) for both access and backhaul links, and sharing of resources (e.g., frequency band) for both access and backhaul links.

[0093] There are various possible architectures for IAB nodes, including Layer 2 (L2) and Layer 3 (L3) solutions, and the specific architecture deployed may depend on which layers of the protocol stack are implemented in the intermediate node (IAB node). For example, an L2 relay may implement the physical (PHY) / medium access control (MAC) / radio link control (RLC) layers.

[0094] Certain aspects of the present disclosure relate to L1 relays (also referred to as relays). Relays can have many desirable features. For example, such relays are relatively simple, low-cost, low-power, and wirelessly connected to a donor or another relay (e.g., a gNodeB (gNB)).

[0095] Figure 5 An example application of repeaters in wireless communication system 500 is illustrated. Repeaters can help improve coverage by overcoming obstructions, such as objects blocking radio frequency (RF) signals. Obstruction can be a major issue in millimeter wave (mmW) communication systems, where beamforming is used to transmit directional RF signals. In the illustrated example, repeaters r1, r2, and r3 allow gNBs to serve UE1 and UE2 even if an object prevents the gNB's directional RF signals from reaching the UEs.

[0096] As illustrated, because relay r1 is not blocked from receiving RF signals from the gNB by any object, even if UE1 is blocked from directly receiving RF signals from the gNB by a first object (e.g., a building or tree), relay r1 can still receive RF signals from the gNB and retransmit the RF signals to reach UE1. Similarly, because relay r2 is not blocked from receiving RF signals from the gNB by any object, even if UE2 is also blocked from directly receiving RF signals from the gNB by a second object, relay r2 can still receive RF signals from the gNB and retransmit the RF signals to reach UE2. As demonstrated by this example, relays can serve as a relatively simple and inexpensive solution that can prevent UEs from being blocked by objects, extend the coverage of mmW cells, and fill coverage holes in mmW cells.

[0097] Figure 6 and Figure 7 Additional examples of how repeaters can help effectively overcome obstruction by one or more objects in a cell are provided. Figure 6 As illustrated in the wireless communication system 600 of FIG. 1 , a repeater r1 receives at least one RF signal (corresponding to a receive beam or Rx beam) in one panel and (re)transmits an RF signal (corresponding to a transmit beam or Tx beam) in another panel. For example, the repeater r1 amplifies the received RF signal and forwards it to become a transmitted RF signal received by the UE. This type of operation may be referred to as amplify-and-forward.

[0098] exist Figure 6In the illustrated example, relay r1 is capable of receiving an RF signal (e.g., a downlink (DL) transmission) from a BS and relaying the RF signal to a UE that cannot directly receive the RF signal from the BS due to an object (e.g., a tree) between the BS and the UE. Similarly, relay r1 can receive an RF signal (e.g., an uplink (UL) transmission) from a UE and relay the RF signal to the BS.

[0099] like Figure 7 As illustrated in the wireless communication system 700 of FIG, repeater r1 may include receiving panels (e.g., first receiving panels and second receiving panels) and transmitting panels (e.g., first transmitting panels and second transmitting panels), which may be used to implement a fixed beam pattern. For wide coverage, the beam pattern is typically wide, and therefore high array gain cannot be achieved. Repeater r1 may not know whether a signal (e.g., an RF signal) is a DL signal or a UL signal in a time division duplex (TDD) system and may operate in both directions simultaneously (i.e., full duplex).

[0100] Figure 8 A schematic diagram illustrates an example architecture 800 for a repeater (e.g., an L1 repeater). As mentioned above, the repeater can receive an analog RF signal on a receive antenna of the repeater (e.g., based on some configuration of RX beamforming), amplify the power of the received analog RF signal, and transmit the amplified analog RF signal from the repeater's TX antenna (e.g., based on some configuration of transmit (TX) beamforming).

[0101] like Figure 8 As illustrated in FIG, beamforming performed by the repeater can be accomplished via phased array antennas (e.g., first phased array antennas and second phased array antennas) configured by a controller, while amplification can be accomplished by a variable gain amplifier. The repeater can also communicate certain control signals with a server (e.g., a donor BS, a control node, etc.) via a control interface. The control interface can be implemented in-band (e.g., using a smaller bandwidth portion of the same carrier frequency).

[0102] As mentioned above, a relay can be a relay node with amplification and forwarding operation between two wireless nodes (e.g., a network entity and a UE) and can provide a simple and cost-effective way to improve network coverage. Other types of relay nodes include decode-and-forward relay nodes, such as IAB nodes. In some cases, the performance of the relay can be improved based on side information. The side information can include timing information (e.g., time slot, symbol, subframe and / or frame boundaries), time division duplex (TDD) UL / DL configuration, on-off scheduling information and / or spatial information for beam management.

[0103] Repeaters can operate in traditional mode, autonomous mode, or network controlled mode. A repeater operating in traditional mode can operate without side information to provide amplify-and-forward operation between two wireless nodes.

[0104] A repeater operating in autonomous mode may obtain or infer information useful for communication operations directly or via a cloud-based management entity. For example, a repeater operating in autonomous mode may obtain information to be used in communications by receiving and / or decoding a broadcast channel.

[0105] Figure 9 An example logical architecture for a network-controlled relay (e.g., a relay operating in network-controlled mode) according to aspects of the present disclosure is depicted. As illustrated, the NCR may include an NCR mobile terminal (NCR-MT) function and an NCR forwarding (NCR-Fwd) function. The NCR-MT function may have a Uu-based control link for exchanging side control information with a gNB (as illustrated) or another network entity. The NCR-Fwd function may perform amplification and forwarding of UL and / or DL ​​RF signals between the gNB and the UE via a backhaul (BH) link and an access link. It is desirable that at least one of the carriers of the NCR-MT: operates in the frequency band forwarded by the NCR-Fwd function, such that the channel used for the control link on which the relay receives side control and the channel used for the backhaul link for forwarding are similar; and / or facilitates beam management of the backhaul for forwarding based on the beam management used for the control link; and / or have similar subcarrier spacing for time management of the control link and the backhaul link for forwarding. Depending on the capabilities of the NCR, transmission and reception on the control link and the BH link may be time domain multiplexed (TDM) or performed simultaneously.

[0106] The side control information for the NCR may include beam information for the access link, TDD UL / DL configuration for the cell, on-off information for forwarding behavior, and / or power control information. The on-off information for forwarding behavior may, for example, mean that the NCR knows when to activate forwarding and when to deactivate forwarding (e.g., if there is no signal, then deactivate forwarding, and forwarding will be equivalent to amplifying noise and interference).

[0107] A network-controlled relay can be configured and / or controlled using side information by a network node (e.g., a gNB) via an established control interface. In one example, all side information can be provided by the gNB. In another example, some of the side information can be configured / controlled by the gNB, while the remaining side information can be acquired / inferred by the network-controlled relay itself. This can reduce control overhead and / or latency for the network-controlled relay.

[0108] Overview of Mobile Repeaters

[0109] In some cases, repeaters may be deployed in fixed and static locations to provide amplify-and-forward operations between two wireless nodes.

[0110] In some cases, a repeater can be mobile (e.g., deployed in a vehicle such as a bus). A mobile repeater (e.g., in a vehicle) can provide better coverage for some user equipment (UE). For example, a repeater in a vehicle can provide improved coverage for UEs in a vehicle by compensating for the loss associated with signals penetrating into the interior of the vehicle. A mobile repeater can also provide service to UEs near the vehicle, such as UEs carried by pedestrians and UEs in moving cars.

[0111] In some cases, a relay operating in network control mode (e.g., NCR) may use the UE modem to establish a radio resource control (RRC) connection with a network entity. The modem may also perform radio resource management (RRM) measurements and report the RRM measurements to the serving cell of the relay operating in network control mode.

[0112] In some cases, a network entity may have information associated with a relay. This information may include the type of relay, the functionality of the relay, the UEs served by the relay, the traffic requirements of the relay, and the Quality of Service (QoS) requirements of the relay.

[0113] In some cases, when a relay operating in network-controlled mode is moving through the network and the relay is about to perform a handover (HO) from a current cell to a target cell, a network entity may decide which target cell the relay (and its associated UE) may be handed over to. The network entity may determine the target cell based on measurements made by the relay, measurements made by the UE, UE requirements, and / or cell load.

[0114] In some cases, a repeater operating in autonomous mode may operate transparently to a network entity. In some cases, a repeater operating in autonomous mode may communicate with a cloud-based management entity. In some cases, a repeater operating in autonomous mode may operate self-sufficiently.

[0115] Figure 10A and Figure 10B An example UE mobility scenario is illustrated where the UE interacts with a cell without involving a relay. In the example mobility scenario, the cell broadcasts a "fixed" SSB pattern and the UE observes the beam changes due to the UE's mobility. Figure 10AAs illustrated in the network diagram 1000 in FIG, at a first time, the UE moves relative to the cell and receives a transmission using a receive beam 1002, such as SSB beam 2. Figure 10B At a later time, as illustrated in network diagram 1050 in FIG, the UE has moved to a new location and observes a stronger beam 1 and a weaker beam 2. The UE changes the receive beam configuration to use receive beam 1052 to receive transmissions such as SSB beam 1.

[0116] Figure 11A and Figure 11B An example UE mobility scenario is illustrated in which the UE and NCR move through the cell together. In the example mobility scenario, the cell broadcasts a "fixed" SSB pattern and the NCR forwards the SSB beam to the UE in a "stationary" manner, i.e., the NCR is stationary with respect to the UE and the NCR forwards the SSB beam to the UE as if the UE were moving through the cell without the NCR, e.g. Figure 10A and Figure 10B As shown in Figure 2. The relay may be transparent to the UE, so that the UE may not be aware of the presence and activity of the NCR. As the NCR and UE move together through the cell, the UE observes the beam changes that the NCR observes and reproduces. Figure 11A As illustrated in the network diagram 1100 in FIG, at a first time, the UE and the NCR move relative to the cell, and the NCR receives a transmission such as SSB beam 2 using receive beam 1102 and forwards the transmission to the UE, which receives the transmission using receive beam 1104. Figure 11B As illustrated in network diagram 1150 in FIG, at a later time, the UE and NCR have moved to a new location, and the NCR observes the stronger beam 1 and the weaker beam 2. The NCR changes the receive beam configuration to receive transmissions such as SSB beam 1 using receive beam 1152, while the UE continues to receive transmissions using receive beam 1104.

[0117] Aspects related to dynamically updating the forwarding configuration of a mobile repeater

[0118] A repeater can improve the coverage provided by a network by enabling signals from a network entity to reach areas that the signals would otherwise not reach because they are blocked, for example, by objects such as buildings or trees. A repeater can be mobile or stationary and can operate in an autonomous mode or a network controlled mode. A repeater operating in a network controlled mode may be referred to as a network controlled repeater (NCR). As a mobile repeater moves within a cell, the repeater may move out of the coverage area of ​​a first beam from the network entity (e.g., a beam used to transmit a synchronization signal block (SSB)) and into the coverage area of ​​a second beam. When a UE and the repeater move together (e.g., both are in a vehicle), the UE observes the SSB beam changes through the repeater because the repeater forwards the SSB beam to the UE as the repeater and UE move together.

[0119] In various aspects of the present disclosure, a repeater (eg, NCR) detects (eg, via NCR-MT) a channel change on a backhaul link and can modify the forwarding behavior of its NCR-Fwd on the access link based on the detected channel change.

[0120] According to aspects of the present disclosure, detecting a channel change (e.g., a change in the channel condition of a communication link) may refer to a condition being satisfied based on a quantity calculated based on a measurement reference signal transmitted by the network. Such a condition may be cell-specific (e.g., a condition of the cell serving the relay) or beam-specific (e.g., a beam on which the relay receives from a network entity). For example, the NCR-MT of the relay may detect that the RSRP of SSB beam 1 exceeds a threshold, or that the RSRP of SSB beam 1 becomes weaker than the RSRP of SSB beam 2 by a threshold amount.

[0121] In various aspects of the present disclosure, detection of channel changes by a repeater may be based on power, energy, or signal strength within a bandwidth (BW) measured in the radio frequency or intermediate frequency (RF / IF) domain. The bandwidth may be configured on the repeater (e.g., by a network entity).

[0122] According to aspects of the present disclosure, detection of a channel change by the repeater may refer to one or more of: activation of a new Transmit Control Indication (TCI) state for the NCR-MT by the network; or a change in the BH link beam received by the NCR-Fwd function (e.g., a change that may be indicated via side control information from a network entity).

[0123] In various aspects of the present disclosure, modifying the forwarding behavior of a repeater may refer to one or more of the following operations: 1) activating or deactivating forwarding (including beam-specific activation or deactivation of forwarding, e.g., the repeater may stop forwarding SSB beam index 0); 2) modifying an amplification gain, such as a beam-specific amplification gain used by the repeater (e.g., equalizing the strength of the beam observed by the UE); 3) modifying an access beam configuration (e.g., by changing the width of the access beam); or 4) modifying an access beam scanning mode (e.g., switching to no beam or changing the direction of a beam).

[0124] According to aspects of the present disclosure, each of the above-described modifications to forwarding behavior may be performed on a directional basis (eg, affecting forwarding behavior in the UL direction differently than forwarding behavior in the DL direction).

[0125] In various aspects of the present disclosure, modifying forwarding behavior may refer to one or more of the following operations: 1) switching to or from an autonomous operating mode (i.e., not receiving any additional side control for any subset of the side control information); 2) adjusting the receive and / or forwarding timing reference or time window; 3) switching to or from digitally processing the input signal (e.g., to reduce impairments or reduce peak-to-average power ratio (PAPR), etc.); 4) switching from forwarding a reference signal to generating and sending a reference signal, or vice versa; or 5) switching to receiving and processing a receive signal (such as a RACH or SRS) instead of forwarding the receive signal, or vice versa.

[0126] According to aspects of the present disclosure, a relay may receive a configuration from a network entity, and the relay may determine whether a backhaul channel change is detected based on the configuration.

[0127] In aspects of the present disclosure, a relay may receive a configuration from a network entity that activates modification of forwarding behavior on an access link by the relay based on detected backhaul channel changes.

[0128] According to aspects of the present disclosure, a repeater may receive a forwarding configuration from a network, and the repeater may modify forwarding behavior based on the forwarding configuration. In one aspect of the present disclosure, the repeater may receive a mapping of a forwarding configuration and an associated backhaul channel condition or threshold (e.g., from a network entity), and the repeater may modify forwarding behavior based on the mapping.

[0129] In aspects of the present disclosure, the repeater may notify the network (eg, a network entity) of a detected backhaul channel change, based on which the repeater may receive a new forwarding configuration.

[0130] According to aspects of the present disclosure, a relay may notify a network (eg, a network entity) of modifications to the relay's forwarding behavior.

[0131] Example Operations of Entities in a Communication Network

[0132] Figure 12 A process flow 1200 is depicted for communication in a network between a network entity 1202, a relay 1210, and a user equipment (UE) 1204. In some aspects, the network entity 1202 may be a Figure 1 and Figure 3 Depict and describe BS102 or about Figure 2 An example of a decomposed base station is depicted and described. Similarly, UE 1204 may be about Figure 1 and Figure 3 An example of a UE 104 is depicted and described. The relay 1210 may be related to Figure 8 and Figure 9 An example of relay 800 or 902 is depicted and described. However, in other aspects, relay 1210 and UE 1204 can be another type of wireless communication device, and BS 1202 can be another type of network entity or network node, such as those described herein.

[0133] At 1220 , the network entity 1202 optionally sends the configuration to the relay 1210 .

[0134] At 1222, the network entity 1202 sends a signal (such as an SSB) to the relay 1210 over a control link.

[0135] At 1224, the relay 1210 detects a change in channel conditions on the control link with the network entity.

[0136] At 1226 , the repeater 1210 modifies the repeater's forwarding behavior based on the change in channel conditions detected at 1224 .

[0137] At 1230, the relay forwards communications between the network entity and the UE according to the modified forwarding behavior.

[0138] Example Operations by a Repeater

[0139] Figure 13 shows that at a repeater (such as by Figure 1 and Figure 3 An example of a method 1300 for performing wireless communications with a UE 104).

[0140] Method 1300 begins at step 1305, where forwarding behavior is modified based on changes in channel conditions of a communication link between a relay and a network entity. In some cases, the operation of this step refers to the process described in reference to FIG. Figure 15 The circuit for modifying and / or the code for modifying are described, or can be executed by the circuit and / or the code.

[0141] Then, the method 1300 proceeds to step 1310, where one or more communications are forwarded between the network entity and the UE according to the modified forwarding behavior. In some cases, the operation of this step refers to the operation of Figure 15 The described circuits for forwarding and / or codes for forwarding may be performed by or may be executed by the circuits and / or codes.

[0142] In some aspects, the method 1300 further comprises detecting a change based on a condition comprising at least one of: a reference signal measurement; or a power measurement within a bandwidth. In some cases, the operation of this step refers to the reference signal measurement; Figure 15 The described circuit for detecting and / or code for detecting may be performed by the circuit and / or code.

[0143] In some aspects, the method 1300 further comprises detecting the change based on at least one of: activation of a TCI state of the MT for the relay; or a change in a beam of a backhaul link for the relay. In some cases, the operation of this step refers to the following. Figure 15 The described circuit for detecting and / or code for detecting may be performed by the circuit and / or code.

[0144] In some aspects, modifying the forwarding behavior includes performing at least one of: activating forwarding by the repeater; deactivating forwarding by the repeater; modifying a beam-specific amplification gain of the repeater; modifying an access beam configuration of the repeater; modifying an access beam scanning pattern of the repeater; or ceasing to transmit a beam.

[0145] In some aspects, modifying the forwarding behavior includes modifying the forwarding behavior for downlink communications from the network entity independently of the forwarding behavior for uplink communications to the network entity.

[0146] In some aspects, modifying the forwarding behavior includes performing at least one of: switching to an autonomous operating mode; switching from an autonomous operating mode; adjusting a receive timing reference; adjusting a forwarding timing reference; switching to digitally processing the input signal; or switching from digitally processing the input signal.

[0147] In some aspects, modifying the forwarding behavior includes at least one of: switching from forwarding the RS to generating and sending the RS; or switching from generating and sending the RS to forwarding the RS.

[0148] In some aspects, modifying the forwarding behavior includes at least one of: switching from receiving and processing the received signal to forwarding the received signal; or switching from forwarding the received signal to processing the received signal.

[0149] In some aspects, the method 1300 further comprises receiving a configuration from a network entity. In some cases, the operation of this step is as described in reference to Figure 15 The circuits for receiving and / or the code for receiving are described, or can be performed by the circuits and / or the code.

[0150] In some aspects, method 1300 further includes detecting a change based on the configuration. In some cases, the operation of this step refers to the following steps: Figure 15 The described circuit for detecting and / or code for detecting may be performed by the circuit and / or code.

[0151] In some aspects, method 1300 further includes activating a modification to the forwarding behavior in response to receiving the configuration. In some cases, the operation of this step refers to the following steps: Figure 15 The described circuit for activating and / or code for activating may be or may be executed by the circuit and / or the code.

[0152] In some aspects, the method 1300 further includes modifying the forwarding behavior based on the configuration. In some cases, the operation of this step refers to the following example. Figure 15 The circuit for modifying and / or the code for modifying are described, or can be executed by the circuit and / or the code.

[0153] In some aspects, the method 1300 further comprises receiving a forwarding configuration comprising a mapping between a modification to the forwarding behavior and a set of channel conditions, wherein the modification to the forwarding behavior is performed according to the mapping. In some cases, the operation of this step refers to the process described in reference to Figure 15 The circuits for receiving and / or the code for receiving are described, or can be performed by the circuits and / or the code.

[0154] In some aspects, the method 1300 further includes detecting a change based on at least one of the channel condition sets. In some cases, the operation of this step refers to the following steps: Figure 15 The described circuit for detecting and / or code for detecting may be performed by the circuit and / or code.

[0155] In some aspects, modifying the forwarding behavior includes: notifying a network entity of the change; receiving a forwarding configuration from the network entity based on the change; and modifying the forwarding behavior according to the received forwarding configuration.

[0156] In some aspects, the method 1300 further includes notifying the network entity of the modification of the forwarding behavior. In some cases, the operation of this step refers to the following steps: Figure 15 The described circuit for notifying and / or code for notifying may be performed by or be executable by the circuit and / or code.

[0157] In some aspects, forwarding the one or more communications in accordance with the modified forwarding behavior includes receiving the one or more communications in accordance with the modified forwarding behavior and subsequently sending a rendition of the one or more communications in accordance with the modified forwarding behavior.

[0158] In one aspect, method 1300 or any aspect related thereto may be performed by an apparatus such as Figure 15 The method 1300 is performed by a communication device 1500 comprising various components operable to, configured to, or adapted to perform the method 1300. The communication device 1500 is described in more detail below.

[0159] Please note that Figure 13 This is merely one example of a method, and other methods including fewer, additional, or alternative steps may also be consistent with the present disclosure.

[0160] Example operations performed by network entities

[0161] Figure 14 shows the network entities such as Figure 1 and Figure 3 BS102 or such Figure 2 An example of a method 1400 for performing wireless communications using a decomposed base station as discussed above.

[0162] Method 1400 begins at step 1405, where a configuration is output for transmission to a repeater, wherein the configuration configures the repeater to perform at least one of the following operations: detecting a change in a channel condition of a communication link between the repeater and a network entity; and modifying a forwarding behavior of the repeater based on the change in the channel condition. In some cases, the operation of this step refers to the operation described in reference to Figure 16 The described circuit for outputting and / or code for outputting may be performed by the circuit and / or code.

[0163] Then, the method 1400 proceeds to step 1410, where the communication with the UE as the intended recipient is output for transmission to the relay. In some cases, the operation of this step refers to the operation of Figure 16The described circuit for outputting and / or code for outputting may be performed by the circuit and / or code.

[0164] In some aspects, the configuration further configures the repeater to at least one of: detect a change based on the configuration; activate a modification to the forwarding behavior in response to obtaining the configuration; or modify the forwarding behavior further based on the configuration.

[0165] In some aspects, the configuration includes a mapping between modifications to the forwarding behavior of the repeater and a set of channel conditions.

[0166] In some aspects, method 1400 further includes: obtaining notification of the change from the repeater; and generating a configuration based on the change.

[0167] In some aspects, the method 1400 further includes obtaining an indication of a modification of the forwarding behavior from the relay. In some cases, the operation of this step is as described in reference to Figure 16 The described circuit for obtaining and / or code for obtaining may be performed by the circuit and / or code.

[0168] In one aspect, method 1400 or any aspect related thereto may be performed by an apparatus such as Figure 16 The method 1400 is performed by a communication device 1600 comprising various components operable to, configured to, or adapted to perform the method 1400. The communication device 1600 is described in more detail below.

[0169] Please note that Figure 14 This is merely one example of a method, and other methods including fewer, additional, or alternative steps may also be consistent with the present disclosure.

[0170] Example Communication Device

[0171] Figure 15 Depicted are aspects of an example communication device 1500. In some aspects, the communication device 1500 is user equipment, such as described above with respect to Figure 1 and Figure 3 UE 104 is described.

[0172] The communication device 1500 includes a processing system 1505 coupled to a transceiver 1585 (e.g., a transmitter and / or receiver). The transceiver 1585 is configured to transmit and receive signals for the communication device 1500, such as the various signals described herein, via an antenna 1590. The processing system 1505 may be configured to perform processing functions for the communication device 1500, including processing signals received by the communication device 1500 and / or to be transmitted by the communication device.

[0173] The processing system 1505 includes one or more processors 1510. In various aspects, the one or more processors 1510 may represent one or more of the receive processor 358, the transmit processor 364, the TX MIMO processor 366, and / or the controller / processor 380, as described for Figure 3 The one or more processors 1510 are coupled to the computer readable medium / memory 1545 via the bus 1580. In some aspects, the computer readable medium / memory 1545 is configured to store instructions (e.g., computer executable code) that, when executed by the one or more processors 1510, cause the one or more processors 1510 to perform operations related to the computer readable medium / memory 1545. Figure 13 The method 1300 or any aspect related thereto is described. Note that references to a processor performing a function of the communication device 1500 may include one or more processors 1510 performing that function of the communication device 1500 .

[0174] In the depicted example, computer-readable medium / memory 1545 stores code (e.g., executable instructions) such as code 1550 for modifying, code 1555 for forwarding, code 1560 for detecting, code 1565 for receiving, code 1570 for activating, code 1571 for notifying, code 1572 for stopping, code 1573 for switching, code 1574 for adjusting, code 1575 for generating, code 1576 for processing, code 1577 for obtaining, and code 1578 for outputting. The processing of the code 1550 for modifying, the code 1555 for forwarding, the code 1560 for detecting, the code 1565 for receiving, the code 1570 for activating, the code 1571 for notifying, the code 1572 for stopping, the code 1573 for switching, the code 1574 for adjusting, the code 1575 for generating, the code 1576 for processing, the code 1577 for obtaining, and the code 1578 for outputting may enable the communication device 1500 to perform the operation related to Figure 13 The described method 1300 or any aspect related thereto.

[0175] One or more processors 1510 include circuits configured to implement (e.g., execute) code stored in computer-readable medium / memory 1545, including circuits such as circuitry for modifying 1515, circuitry for forwarding 1520, circuitry for detecting 1525, circuitry for receiving 1530, circuitry for activating 1535, circuitry for notifying 1536, circuitry for stopping 1537, circuitry for switching 1538, circuitry for adjusting 1538, circuitry for generating 1540, circuitry for processing 1541, circuitry for obtaining 1542, and circuitry for outputting 1543. Processing using circuitry 1515 for modifying, circuitry 1520 for forwarding, circuitry 1525 for detecting, circuitry 1530 for receiving, circuitry 1535 for activating, circuitry 1536 for notifying, circuitry 1537 for stopping, circuitry 1538 for switching, circuitry 1538 for adjusting, circuitry 1540 for generating, circuitry 1541 for processing, circuitry 1542 for obtaining, and circuitry 1543 for outputting may enable the communication device 1500 to perform operations related to the communication device 1500. Figure 13 The described method 1300 or any aspect related thereto.

[0176] The various components of the communication device 1500 may provide for performing Figure 13 The components of the described method 1300 or any aspect thereof. For example, components for sending, transmitting, forwarding, notifying, or outputting (or components for outputting for sending) may include Figure 3 The transceiver 354 and / or antenna 352 and / or Figure 15 The transceiver 1585 and antenna 1590 of the communication device 1500 in FIG. Components for receiving, detecting, or obtaining may include Figure 3 The transceiver 354 and / or antenna 352 and / or Figure 15 The transceiver 1585 and antenna 1590 of the communication device 1500 in FIG. The components for modifying, detecting, activating, deactivating, stopping, switching, adjusting, notifying, generating, or processing may include one or more of the following: Figure 3 The controller / processor 380, the transmitting processor 364 or the receiving processor 358 and / or Figure 15 The processor 1510 and computer-readable medium 1545 of the communication device 1500 are illustrated in FIG.

[0177] In some cases, a device may not actually send, for example, signals and / or data, but may have an interface (components for outputting) for outputting signals and / or data for transmission. For example, a processor may output signals and / or data to a radio frequency (RF) front end via a bus interface for transmission. Similarly, a device may not actually receive signals and / or data, but may have an interface (components for obtaining) for obtaining signals and / or data received from another device. For example, a processor may obtain (or receive) signals and / or data from an RF front end via a bus interface for reception. In various aspects, the RF front end may include various components, including, for example, Figure 3 The transmit and receive processors, transmit and receive MIMO processors, modulators, demodulators, etc. depicted in the examples in FIG. Figure 15 are examples, and many other examples and configurations of communication device 1500 are possible.

[0178] Figure 16 Aspects of an example communication device 1600 are depicted. In some aspects, the communication device 1600 is a network entity such as Figure 1 and Figure 3 BS102 or such Figure 2 The decomposed base station in question.

[0179] The communication device 1600 includes a processing system 1605 coupled to a transceiver 1645 (e.g., a transmitter and / or receiver) and / or a network interface 1655. The transceiver 1645 is configured to transmit and receive signals for the communication device 1600, such as the various signals described herein, via an antenna 1650. The network interface 1655 is configured to transmit and receive signals for the communication device 1600, such as the various signals described herein, via a communication link (e.g., a network interface 1655). Figure 2 The processing system 1605 may be configured to perform processing functions for the communication device 1600, including processing signals received by the communication device 1600 and / or to be transmitted by the communication device 1600.

[0180] The processing system 1605 includes one or more processors 1610. In various aspects, the one or more processors 1610 may represent one or more of the receive processor 338, the transmit processor 320, the TX MIMO processor 330, and / or the controller / processor 340, as described with respect to FIG. Figure 3 The one or more processors 1610 are coupled to the computer readable medium / memory 1625 via the bus 1640. In certain aspects, the computer readable medium / memory 1625 is configured to store instructions (e.g., computer executable code) that, when executed by the one or more processors 1610, cause the one or more processors 1610 to perform operations related to the computer readable medium / memory 1625. Figure 14 The described method 1400 or any aspect related thereto. Note that references to a processor of the communication device 1600 performing a function may include one or more processors 1610 of the communication device 1600 performing that function.

[0181] In the depicted example, computer readable medium / memory 1625 stores code (e.g., executable instructions), such as code for outputting 1630, code for obtaining 1635, and code for generating 1636. Processing of code for outputting 1630, code for obtaining 1635, and code for generating 1636 may cause the communication device 1600 to perform operations related to the communication device 1600. Figure 14 The described method 1400 or any aspect related thereto.

[0182] The one or more processors 1610 include circuits configured to implement (e.g., execute) code stored in the computer-readable medium / memory 1625, including circuits such as circuitry for outputting 1615 and circuitry for obtaining 1620. Processing performed using circuitry for outputting 1615 and circuitry for obtaining 1620 may enable the communication device 1600 to perform operations related to Figure 14 The described method 1400 or any aspect related thereto.

[0183] The various components of the communication device 1600 may provide for performing Figure 14 The components of the described method 1400 or any aspect thereof. The components for sending, transmitting, or outputting (or the components for outputting for sending) may include Figure 3 The transceiver 332 and / or antenna 334 and / or Figure 16 The transceiver 1645 and antenna 1650 of the communication device 1600 in FIG. Components for receiving or obtaining may include Figure 3 The transceiver 332 and / or antenna 334 and / or Figure 16 The transceiver 1645 and antenna 1650 of the communication device 1600 in FIG. The means for generating may include one or more of the following: Figure 3 The controller / processor 340, the transmitting processor 320 or the receiving processor 338 and / or Figure 16 The processor 1610 and computer-readable medium 1625 of the communication device 1600 are illustrated in FIG.

[0184] In some cases, a device may not actually send, for example, signals and / or data, but may have an interface (components for outputting) for outputting signals and / or data for transmission. For example, a processor may output signals and / or data to a radio frequency (RF) front end via a bus interface for transmission. Similarly, a device may not actually receive signals and / or data, but may have an interface (components for obtaining) for obtaining signals and / or data received from another device. For example, a processor may obtain (or receive) signals and / or data from an RF front end via a bus interface for reception. In various aspects, the RF front end may include various components, including, for example, Figure 3 The transmit and receive processors, transmit and receive MIMO processors, modulators, demodulators, etc. depicted in the examples in FIG. Figure 16 are examples, and many other examples and configurations of communications device 1600 are possible.

[0185] Sample Clauses

[0186] Specific implementation examples are described in the following numbered clauses:

[0187] Clause 1: A method for wireless communications at a relay, the method comprising: modifying a forwarding behavior based on a change in a channel condition of a communication link between the relay and a network entity; and forwarding one or more communications between the network entity and a UE according to the modified forwarding behavior.

[0188] Clause 2: The method of clause 1, further comprising: detecting the change based on a condition comprising at least one of: a reference signal measurement; or a power measurement within a bandwidth.

[0189] Clause 3: The method according to any one of clauses 1 and 2, further comprising: detecting the change based on at least one of: activation of a TCI state of an MT for the relay; or a change in a beam of a backhaul link for the relay.

[0190] Clause 4: A method according to any one of clauses 1 to 3, wherein modifying the forwarding behavior includes performing at least one of the following operations: activating forwarding performed by the repeater; deactivating forwarding performed by the repeater; modifying the beam-specific amplification gain of the repeater; modifying the access beam configuration of the repeater; modifying the access beam scanning mode of the repeater; or stopping transmitting a beam.

[0191] Clause 5: The method of any of clauses 1 to 4, wherein modifying the forwarding behavior comprises modifying the forwarding behavior for downlink communications from the network entity independently of the forwarding behavior for uplink communications to the network entity.

[0192] Clause 6: A method according to any one of clauses 1 to 5, wherein modifying the forwarding behavior includes performing at least one of the following operations: switching to an autonomous operating mode; switching from the autonomous operating mode; adjusting a receive timing reference; adjusting a forwarding timing reference; switching to a digitally processed input signal; or switching from a digitally processed input signal.

[0193] Clause 7: The method of any of clauses 1 to 6, wherein modifying the forwarding behavior comprises performing at least one of the following operations: switching from forwarding RS to generating and sending RS; or switching from generating and sending RS to forwarding RS.

[0194] Clause 8: A method according to any one of clauses 1 to 7, wherein modifying the forwarding behavior includes performing at least one of the following operations: switching from receiving and processing the received signal to forwarding the received signal; or switching from forwarding the received signal to processing the received signal.

[0195] Clause 9: The method according to any one of clauses 1 to 8, further comprising: receiving a configuration from the network entity; and performing at least one of the following operations: detecting the change based on the configuration; activating the modification to the forwarding behavior in response to receiving the configuration; or further modifying the forwarding behavior based on the configuration.

[0196] Clause 10: The method according to any one of clauses 1 to 9, further comprising: receiving a forwarding configuration, the forwarding configuration comprising a mapping between a modification of the forwarding behavior and a set of channel conditions, wherein the modification of the forwarding behavior is performed according to the mapping; and detecting the change based on at least one channel condition set in the set of channel conditions.

[0197] Clause 11: A method according to any of clauses 1 to 10, wherein modifying the forwarding behavior comprises: notifying the network entity of the change; receiving a forwarding configuration from the network entity based on the change; and modifying the forwarding behavior according to the received forwarding configuration.

[0198] Clause 12: The method of any of clauses 1 to 11, further comprising: notifying the network entity of the modification to the forwarding behavior.

[0199] Clause 13: The method of any one of clauses 1 to 12, wherein forwarding the one or more communications comprises: obtaining the one or more communications according to the modified forwarding behavior; and outputting a rendition of the one or more communications for transmission according to the modified forwarding behavior.

[0200] Clause 14: A method for wireless communications by a network entity, the method comprising: outputting a configuration for sending to a relay, wherein the configuration configures the relay to perform at least one of: detecting a change in a channel condition of a communication link between the relay and the network entity; and modifying a forwarding behavior of the relay based on the change in channel condition; and outputting a communication with a UE as an intended recipient for sending to the relay.

[0201] Clause 15: A method according to clause 14, wherein the configuration further configures the repeater to perform at least one of the following operations: detecting the change based on the configuration; activating the modification to the forwarding behavior in response to obtaining the configuration; or further modifying the forwarding behavior based on the configuration.

[0202] Clause 16: The method of any of clauses 14 to 15, wherein the configuration comprises a mapping between a modification of the forwarding behavior of the relay and a set of channel conditions.

[0203] Clause 17: The method of any of clauses 14 to 16, further comprising: obtaining notification of the change from the repeater; and generating the configuration based on the change.

[0204] Clause 18: The method of any of clauses 14 to 17, further comprising obtaining an indication of a modification to the forwarding behavior from the relay.

[0205] Clause 19: An apparatus comprising: a memory comprising executable instructions; and a processor configured to execute the executable instructions and cause the apparatus to perform the method of any one of clauses 1 to 18.

[0206] Clause 20: An apparatus comprising means for performing the method of any one of clauses 1 to 18.

[0207] Clause 21: A non-transitory computer-readable medium comprising executable instructions that, when executed by a processor of an apparatus, cause the apparatus to perform the method of any one of clauses 1 to 18.

[0208] Clause 22: A computer program product embodied on a computer-readable storage medium, the computer-readable storage medium comprising code for performing the method according to any one of clauses 1 to 18.

[0209] Clause 23: A relay, comprising: at least one transceiver; a memory comprising processor-executable instructions; and one or more processors configured to execute the processor-executable instructions and cause the relay to perform a method according to any of clauses 1 to 13, wherein the at least one transceiver is configured to forward one or more communications between a network entity and a UE.

[0210] Clause 24: A network entity comprising: at least one transceiver; a memory comprising processor-executable instructions; and one or more processors configured to execute the processor-executable instructions and cause the network entity to perform a method according to any of clauses 14 to 18, wherein the at least one transceiver is configured to transmit a configuration and a communication with a UE as an intended recipient.

[0211] Additional Notes

[0212] The foregoing description is provided to enable any person skilled in the art to practice the various aspects described herein. The examples discussed herein do not limit the scope, applicability, or aspects set forth in the claims. Various modifications to these aspects will be apparent to those skilled in the art, and the general principles defined herein may be applied to other aspects. For example, the functions and arrangements of the elements discussed may be changed without departing from the scope of this disclosure. Various examples may omit, replace, or add various processes or components as appropriate. For example, the methods described may be performed in an order different from that described, and various actions may be added, omitted, or combined. In addition, the features described with respect to some examples may be combined in some other examples. For example, a device or method of practice may be implemented using any number of the aspects set forth herein. In addition, the scope of this disclosure is intended to cover such devices or methods practiced using other structures, functionalities, or structures and functionalities that supplement or replace the various aspects of the disclosure set forth herein. It should be understood that any aspect of the disclosure disclosed herein may be embodied by one or more elements of the present claims.

[0213] The various illustrative logical blocks, modules, and circuits described in conjunction with this disclosure may be implemented or performed using a general purpose processor, a digital signal processor (DSP), an ASIC, a field programmable gate array (FPGA) or other programmable logic device (PLD), discrete gate or transistor logic, discrete hardware components, or any combination thereof, designed to perform the functions described herein. While a general purpose processor may be a microprocessor, in an alternative embodiment, the processor may be any commercially available processor, controller, microcontroller, or state machine. The 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, a system on a chip (SoC), or any other such configuration.

[0214] As used herein, a phrase referring to "at least one of" a list of items refers to any combination of those items (including single members). For example, "at least one of a, b, or c" is intended to cover a, b, c, ab, ac, bc, and abc, as well as any combination with multiple identical elements (e.g., aa, aaa, aab, aac, abb, acc, bb, bbb, bbc, cc, and ccc, or any other ordering of a, b, and c).

[0215] As used herein, the term "determining" encompasses a wide variety of actions. For example, "determining" may include calculating, computing, processing, deriving, investigating, searching (e.g., searching in a table, database, or another data structure), ascertaining, and the like. Additionally, "determining" may include receiving (e.g., receiving information), accessing (e.g., accessing data in a memory), and the like. Additionally, "determining" may include resolving, selecting, choosing, establishing, and the like.

[0216] The method disclosed herein includes one or more actions for implementing the method. Method actions can be interchangeable with each other without departing from the scope of the claims. In other words, unless a specified order of actions is specified, the order and / or use of specific actions can be modified without departing from the scope of the claims. In addition, the various operations of the method described above can be performed by any appropriate component that can perform the corresponding function. The component may include various hardware and / or software components and / or modules, including but not limited to circuits, application specific integrated circuits (ASICs) or processors.

[0217] The following claims are not intended to be limited to the aspects shown herein, but should be given the full scope consistent with the language of the claims. Within the claims, unless specifically stated otherwise, reference to an element in the singular is not intended to mean "one and only one", but "one or more". Unless otherwise specified, the term "some" refers to one or more. No claim element is to be interpreted under the provisions of 35 U.S.C. § 112 (f) unless the element is explicitly stated using the phrase "parts for...". All structural and functional equivalents of the elements of the various aspects described throughout this disclosure that are known or will later be known to one of ordinary skill in the art are expressly incorporated herein by reference and are intended to be covered by the claims. In addition, nothing disclosed herein is intended to be dedicated to the public, regardless of whether such disclosure is explicitly stated in the claims.

Claims

1. A device for wireless communication, the device comprising: a memory comprising processor-executable instructions; and one or more processors configured to execute the processor-executable instructions and cause the apparatus to: modifying forwarding behavior based on changes in channel conditions of a communication link between the device and a network entity; as well as One or more communications are forwarded between the network entity and a user equipment (UE) according to the modified forwarding behavior.

2. The apparatus of claim 1 , wherein the one or more processors are further configured to cause the apparatus to detect the change based on a condition comprising at least one of the following: Reference signal measurement; or Power measurement within bandwidth.

3. The apparatus of claim 1 , wherein the one or more processors are further configured to cause the apparatus to detect the change based on at least one of: activation of a Transmit Configuration Indicator (TCI) state for a Mobile Terminal (MT) of the apparatus; or A change in the beam of the backhaul link for the device.

4. The apparatus of claim 1 , wherein the one or more processors configured to modify the forwarding behavior comprises the one or more processors configured to cause the apparatus to perform at least one of the following operations: Activate forwarding; Disable forwarding; Modify beam-specific amplification gain; Modify access beam configuration; Modify the access beam scanning pattern; or Stop sending the beam.

5. The apparatus of claim 1 , wherein the one or more processors are configured to modify the forwarding behavior comprises the one or more processors being configured to modify the forwarding behavior for downlink communications from the network entity independently of the forwarding behavior for uplink communications to the network entity.

6. The apparatus of claim 1 , wherein the one or more processors being configured to modify the forwarding behavior comprises the one or more processors being configured to cause the apparatus to perform at least one of the following operations: Switch to autonomous operation mode; switching from said autonomous operating mode; Adjust receive timing reference; Adjust forwarding timing reference; Switch to digital processing of input signals; or Switch from digital processing input signal.

7. The apparatus of claim 1 , wherein the one or more communications comprise a reference signal (RS), and wherein the one or more processors are configured to modify the forwarding behavior comprises the one or more processors being configured to perform at least one of: Switching from outputting a reproduction of the obtained RS for transmission to generating an RS and outputting the generated RS for transmission; or Switch from generating an RS and outputting the generated RS for transmission to obtaining an RS and outputting a reproduction of the obtained RS for transmission.

8. The apparatus of claim 1 , wherein the one or more processors are configured to modify the forwarding behavior comprises the one or more processors being configured to perform at least one of the following operations: switching from obtaining a signal and processing the obtained signal to outputting a reproduction of the obtained signal for transmission; or The process switches from obtaining a signal and outputting a reproduction of the obtained signal for transmission to obtaining a signal and processing the obtained signal.

9. The apparatus of claim 1 , wherein the one or more processors are further configured to: Obtaining a configuration from the network entity; and performing at least one of the following operations: detecting the change based on the configuration; activating said modification of said forwarding behavior in response to obtaining said configuration; or The forwarding behavior is further modified based on the configuration.

10. The apparatus of claim 1 , wherein the one or more processors are further configured to: Obtaining a forwarding configuration, the forwarding configuration comprising a mapping between a modification to the forwarding behavior and a set of channel conditions, wherein the modification to the forwarding behavior is performed according to the mapping; and The change is detected based on at least one of the sets of channel conditions.

11. The apparatus of claim 1 , wherein the one or more processors are configured to modify the forwarding behavior comprises the one or more processors being configured to: Notifying the network entity of the change; obtaining a forwarding configuration from the network entity based on the change; and The forwarding behavior is modified according to the obtained forwarding configuration.

12. The apparatus of claim 1 , wherein the one or more processors are further configured to: The network entity is notified of the modification of the forwarding behavior.

13. The apparatus of claim 1 , wherein the one or more processors being configured to cause the apparatus to forward the one or more communications comprises the one or more processors being configured to: obtaining the one or more communications according to the modified forwarding behavior; and A rendition of the one or more communications is output for transmission according to the modified forwarding behavior.

14. An apparatus for wireless communication, the apparatus comprising: a memory comprising processor-executable instructions; and one or more processors configured to execute the processor-executable instructions and cause the apparatus to: Outputting a configuration for sending to a repeater, wherein the configuration configures the repeater to perform at least one of the following operations: detecting a change in a channel condition of a communication link between the relay and a network entity; and modifying the forwarding behavior of the repeater based on the change in channel conditions; as well as Communications with a user equipment (UE) as an intended recipient are output for transmission to the relay.

15. The apparatus of claim 14, wherein the configuration further configures the relay to perform at least one of the following operations: detecting the change based on the configuration; activating said modification of said forwarding behavior in response to obtaining said configuration; or The forwarding behavior is further modified based on the configuration.

16. The apparatus of claim 14, wherein the configuration comprises a mapping between a modification to the forwarding behavior of the repeater and a set of channel conditions.

17. The apparatus of claim 14, wherein the one or more processors are further configured to: obtaining notification of the change from the repeater; and The configuration is generated based on the changes.

18. The apparatus of claim 14, wherein the one or more processors are further configured to: An indication of a modification to the forwarding behavior is obtained from the relay.

19. The apparatus of claim 14, further comprising at least one transceiver configured to transmit the configuration and the communication, wherein the apparatus is configured as a network entity.

20. A repeater, comprising: at least one transceiver; a memory comprising processor-executable instructions; and One or more processors configured to execute the processor-executable instructions and cause the repeater to: modifying forwarding behavior based on changes in channel conditions of a communication link between the relay and a network entity; as well as One or more communications are forwarded between the network entity and a user equipment (UE) via the at least one transceiver according to the modified forwarding behavior.

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