CN118020345A

CN118020345A - Efficient simultaneous communication of dual-connectivity wireless nodes

Info

Publication number: CN118020345A
Application number: CN202280064616.8A
Authority: CN
Inventors: N·阿贝迪尼; J·罗; L·布莱森特; 骆涛
Original assignee: Qualcomm Inc
Current assignee: Qualcomm Inc
Priority date: 2021-10-01
Filing date: 2022-09-16
Publication date: 2024-05-10

Abstract

Aspects of the present disclosure relate generally to wireless communications. In some aspects, the wireless node may send assistance information to at least one of the first parent node or the second parent node related to the wireless node communicating with the first parent node and the second parent node simultaneously. The wireless node may communicate with at least one of the first parent node or the second parent node based at least in part on the assistance information. Many other aspects are described.

Description

Efficient simultaneous communication of dual-connectivity wireless nodes

Cross Reference to Related Applications

This patent application claims priority from U.S. provisional patent application No. 63/261,983 entitled "EFFICIENT SIMULTANEOUS COMMUNICATION OF A DUAL-CONNECTED WIRELESS NODE" filed on 1 at 10 at 2021 and U.S. non-provisional patent application No. 17/932,103 entitled "EFFICIENT SIMULTANEOUS COMMUNICATION OF A DUAL-CONNECTED WIRELESS NODE" filed on 14 at 9 at 2022, which are hereby expressly incorporated by reference.

Technical Field

Aspects of the present disclosure relate generally to wireless communications and relate to techniques and apparatuses for efficient simultaneous communication of dual connectivity wireless nodes.

Background

Wireless communication systems are widely deployed to provide various telecommunication services such as telephony, video, data, messaging, and broadcast. A typical wireless communication system may employ multiple-access techniques capable of supporting communication with multiple users by sharing available system resources (e.g., bandwidth, transmit power, etc.). Examples of such multiple-access techniques include Code Division Multiple Access (CDMA) systems, time Division Multiple Access (TDMA) systems, frequency Division Multiple Access (FDMA) systems, orthogonal Frequency Division Multiple Access (OFDMA) systems, single carrier frequency division multiple access (SC-FDMA) systems, time division synchronous code division multiple access (TD-SCDMA) systems, and Long Term Evolution (LTE). LTE/LTE-advanced is an enhanced set of mobile standards for Universal Mobile Telecommunications System (UMTS) promulgated by the third generation partnership project (3 GPP).

A wireless network may include one or more base stations that support communication for a User Equipment (UE) or multiple UEs. The UE may communicate with the base station via downlink and uplink communications. "downlink" (or "DL") refers to the communication link from a base station to a UE, and "uplink" (or "UL") refers to the communication link from a UE to a base station.

The above multiple access techniques have been employed in various telecommunication standards to provide a common protocol that enables different UEs to communicate at a city, country, region, and/or global level. The New Radio (NR), which may be referred to as 5G, is an enhanced set of LTE mobile standards promulgated by 3 GPP. NR is designed to better integrate with other open standards by improving spectral efficiency, reducing costs, improving services, utilizing new spectrum, and using Orthogonal Frequency Division Multiplexing (OFDM) with Cyclic Prefix (CP) on the downlink (CP-OFDM), CP-OFDM and/or single carrier frequency division multiplexing (SC-FDM) on the uplink (also known as discrete fourier transform spread OFDM (DFT-s-OFDM)), and support beamforming, multiple Input Multiple Output (MIMO) antenna technology, and carrier aggregation. As the demand for mobile broadband access continues to grow, further improvements to LTE, NR and other radio access technologies remain useful.

Disclosure of Invention

Some aspects described herein relate to a network node for wireless communication. The wireless node may include a memory and one or more processors coupled to the memory. The one or more processors may be configured to send assistance information to at least one of the first parent node or the second parent node related to simultaneous communication of the wireless node with the first parent node and the second parent node. The one or more processors may be configured to communicate with at least one of the first parent node or the second parent node based at least in part on the assistance information.

Some aspects described herein relate to a first parent node for wireless communication. The first parent node may include a memory and one or more processors coupled to the memory. The one or more processors may be configured to receive assistance information related to simultaneous communication of the wireless node with the first parent node and the second parent node. The one or more processors may be configured to communicate with the wireless node based at least in part on the assistance information.

Some aspects described herein relate to a first parent node for wireless communication. The first parent node may include a memory and one or more processors coupled to the memory. The one or more processors may be configured to send assistance information to at least one of the second parent node, the central unit, or the wireless node related to simultaneous communication of the wireless node with the first parent node and the second parent node. The one or more processors may be configured to communicate with the wireless node based at least in part on the assistance information.

Some aspects described herein relate to a method of performing wireless communication by a network node. The method may include transmitting assistance information to at least one of the first parent node or the second parent node relating to simultaneous communication of the wireless node with the first parent node and the second parent node. The method may include: communication is made with at least one of the first parent node or the second parent node based at least in part on the assistance information.

Some aspects described herein relate to a method of performing wireless communication by a first parent node. The method may include: assistance information is received relating to simultaneous communication of a wireless node with a first parent node and a second parent node. The method may include: the wireless node is in communication based at least in part on the assistance information.

Some aspects described herein relate to a method of performing wireless communication by a first parent node. The method may include transmitting assistance information to at least one of the second parent node, the central unit, or the wireless node relating to simultaneous communication of the wireless node with the first parent node and the second parent node. The method may include: the wireless node is in communication based at least in part on the assistance information.

Some aspects described herein relate to a non-transitory computer-readable medium storing a set of instructions for wireless communication by a wireless node. The set of instructions, when executed by the one or more processors of the wireless node, may cause the wireless node to transmit assistance information to at least one of the first parent node or the second parent node relating to simultaneous communication of the wireless node with the first parent node and the second parent node. The set of instructions, when executed by one or more processors of the wireless node, may cause the wireless node to communicate with at least one of the first parent node or the second parent node based at least in part on the assistance information.

Some aspects described herein relate to a non-transitory computer-readable medium storing a set of instructions for wireless communication by a first parent node. The set of instructions, when executed by the one or more processors of the first parent node, may cause the first parent node to receive assistance information related to simultaneous communication of the wireless node with the first parent node and the second parent node. The set of instructions, when executed by the one or more processors of the first parent node, may cause the first parent node to communicate with the wireless node based at least in part on the assistance information.

Some aspects described herein relate to a non-transitory computer-readable medium storing a set of instructions for wireless communication by a first parent node. The set of instructions, when executed by the one or more processors of the first parent node, may cause the first parent node to send assistance information to at least one of the second parent node, the central unit, or the wireless node related to simultaneous communication of the wireless node with the first parent node and the second parent node. The set of instructions, when executed by the one or more processors of the first parent node, may cause the first parent node to communicate with the wireless node based at least in part on the assistance information.

Some aspects described herein relate to an apparatus for wireless communication. The apparatus may include: the apparatus includes means for transmitting, to at least one of the first parent node or the second parent node, auxiliary information related to simultaneous communication of the first parent node and the second parent node. The apparatus may include: the apparatus includes means for communicating with at least one of the first parent node or the second parent node based at least in part on the assistance information.

Some aspects described herein relate to an apparatus for wireless communication. The apparatus may include: the apparatus includes means for receiving assistance information related to simultaneous communication of the wireless node with the device and a second parent node. The apparatus may include: the apparatus includes means for communicating with a wireless node based at least in part on assistance information.

Some aspects described herein relate to an apparatus for wireless communication. The apparatus may include: the apparatus includes means for transmitting, to at least one of a second parent node, a central unit, or a wireless node, assistance information related to simultaneous communication of the wireless node with the device and the second parent node. The apparatus may include: the apparatus includes means for communicating with a wireless node based at least in part on assistance information.

Aspects herein generally include methods, apparatus, systems, computer program products, non-transitory computer readable media, user devices, base stations, wireless communication devices, and/or processing systems, as substantially described herein with reference to and as illustrated in the accompanying drawings and description.

The foregoing has outlined rather broadly the features and technical advantages of examples in accordance with the present disclosure in order that the detailed description that follows may be better understood. Additional features and advantages will be described below. The disclosed concepts and specific examples may be readily utilized as a basis for modifying or designing other structures for carrying out the same purposes of the present disclosure. Such equivalent constructions do not depart from the scope of the appended claims. The features of the concepts disclosed herein (both as to their organization and method of operation) together with the associated advantages will be better understood from the following description when considered in connection with the accompanying figures. Each of the figures is provided for the purpose of illustration and description and is not intended as a definition of the limits of the claims.

While aspects are described in this disclosure by way of illustration of some examples, those skilled in the art will appreciate that such aspects may be implemented in many different arrangements and scenarios. The techniques described herein may be implemented using different platform types, devices, systems, shapes, sizes, and/or packaging arrangements. For example, aspects may be implemented via integrated chip embodiments and other non-module component based devices (e.g., end user devices, vehicles, communications devices, computing devices, industrial devices, retail/purchasing devices, medical devices, and/or artificial intelligence devices). Aspects may be implemented in chip-level components, modular components, non-chip-level components, device-level components, and/or system-level components. Devices incorporating the described aspects and features may include additional components and features for implementation and implementation of the claimed and described aspects. For example, the transmission and reception of wireless signals may include one or more components for analog and digital purposes (e.g., hardware components including antennas, radio Frequency (RF) chains, power amplifiers, modulators, buffers, processors, interleavers, adders, and/or summers). It is contemplated that aspects described herein may be implemented in a variety of devices, components, systems, distributed arrangements, and/or end user devices having different sizes, shapes, and configurations.

Drawings

A more particular description of the briefly summarized above may be had by reference to aspects, some of which are illustrated in the appended drawings, so that the above-described features of the disclosure may be understood in detail. It is to be noted, however, that the appended drawings illustrate only certain typical aspects of this disclosure and are therefore not to be considered limiting of its scope, for the description may admit to other equally effective aspects. The same reference numbers in different drawings may identify the same or similar elements.

Fig. 1 is a schematic diagram illustrating an example of a wireless network according to the present disclosure.

Fig. 2 is a diagram illustrating an example of a base station communicating with a User Equipment (UE) in a wireless network in accordance with the present disclosure.

Fig. 3 is a schematic diagram illustrating an example of a radio access network according to the present disclosure.

Fig. 4 is a diagram illustrating an example of an Integrated Access and Backhaul (IAB) network architecture in accordance with the present disclosure.

Fig. 5 is a schematic diagram illustrating an example of resource types in an IAB network according to the present disclosure.

Fig. 6 is a diagram illustrating an example of a dual connectivity IAB node according to the present disclosure.

Fig. 7-8 are diagrams illustrating examples associated with efficient simultaneous communication of dual-connectivity wireless nodes in accordance with the present disclosure.

Fig. 9-11 are diagrams illustrating example processes associated with efficient simultaneous communication of dual-connectivity wireless nodes in accordance with the present disclosure.

Fig. 12-13 are diagrams of example apparatuses for wireless communication according to this disclosure.

Detailed Description

Various aspects of the disclosure are described more fully hereinafter with reference to the accompanying drawings. This disclosure may, however, be embodied in many different forms and should not be construed as limited to any specific structure or function presented throughout this disclosure. Rather, these aspects are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. It will be apparent to those skilled in the art that the scope of the present disclosure is intended to encompass any aspect of the disclosure disclosed herein, whether implemented independently of or in combination with any other aspect of the disclosure. For example, an apparatus may be implemented or a method may be practiced using any number of the aspects set forth herein. Furthermore, the scope of the present disclosure is intended to cover such an apparatus or method that is practiced using other structures, functions, or structures and functions in addition to or other than 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 claims.

Several aspects of the telecommunications system will now be presented with reference to various apparatus and techniques. These devices and techniques will be described in the following detailed description and illustrated in the accompanying drawings by various blocks, modules, components, circuits, steps, processes, algorithms, etc. (collectively referred to as "elements"). These elements may be implemented using hardware, software, or a combination thereof. Whether such elements are implemented as hardware or software depends upon the particular application and design constraints imposed on the overall system.

Although aspects may be described herein using terms commonly associated with 5G or New Radio (NR) Radio Access Technologies (RATs), aspects of the disclosure may be applied to other RATs, such as 3G RATs, 4G RATs, and/or RATs after 5G (e.g., 6G).

Fig. 1 is a schematic diagram illustrating an example of a wireless network 100 according to the present disclosure. The wireless network 100 may be or include elements of a 5G (e.g., NR) network and/or a 4G (e.g., long Term Evolution (LTE)) network, among other examples. Wireless network 100 may include one or more base stations 110 (shown as BS110a, BS110b, BS110c, and BS110 d), user Equipment (UE) 120 or multiple UEs 120 (shown as UE 120a, UE 120b, UE 120c, UE 120d, and UE 120 e), and/or other network entities. Base station 110 is the entity in communication with UE 120. Base stations 110 (sometimes referred to as BSs) may include, for example, NR base stations, LTE base stations, nodes B, eNB (e.g., in 4G), gnbs (e.g., in 5G), access points, and/or transmit-receive points (TRPs). Each base station 110 may provide communication coverage for a particular geographic area. In the third generation partnership project (3 GPP), the term "cell" can refer to a coverage area of a base station 110 and/or a base station subsystem serving the coverage area, depending on the context in which the term is used.

The base station 110 may provide communication coverage for a macrocell, a picocell, a femtocell, and/or another type of cell. A macro cell may cover a relatively large geographic area (e.g., several kilometers in radius) and may allow unrestricted access by UEs 120 with service subscription. The pico cell may cover a relatively small geographic area and may allow unrestricted access by UEs 120 with service subscription. A femto cell may cover a relatively small geographic area (e.g., a residence) and may allow restricted access by UEs 120 having an association with the femto cell (e.g., UEs 120 in a Closed Subscriber Group (CSG)). The base station 110 for a macro cell may be referred to as a macro base station. The base station 110 for a pico cell may be referred to as a pico base station. The base station 110 for a femto cell may be referred to as a femto base station or a home base station. In the example shown in fig. 1, BS110a may be a macro base station for macro cell 102a, BS110b may be a pico base station for pico cell 102b, and BS110c may be a femto base station for femto cell 102 c. A base station may support one or more (e.g., three) cells.

In some examples, the cell may not necessarily be stationary, and the geographic area of the cell may move according to the location of the base station 110 (e.g., mobile base station) that is mobile. In some examples, base stations 110 may be interconnected with each other and/or with one or more other base stations 110 or network nodes (not shown) in wireless network 100 through various types of backhaul interfaces, such as direct physical connections or virtual networks, using any suitable transport network.

The wireless network 100 may include one or more relay stations. A relay station is an entity that may receive data transmissions from an upstream station (e.g., base station 110 or UE 120) and send data transmissions to a downstream station (e.g., UE 120 or base station 110). The relay station may be a UE 120 capable of relaying transmissions for other UEs 120. In the example shown in fig. 1, BS110d (e.g., a relay base station) may communicate with BS110a (e.g., a macro base station) and UE 120d in order to facilitate communications between BS110a and UE 120 d. The base station 110 relaying communications may be referred to as a relay station, a relay base station, a relay, etc.

The wireless network 100 may be a heterogeneous network including different types of base stations 110 (such as macro base stations, pico base stations, femto base stations, relay base stations, etc.). These different types of base stations 110 may have different transmit power levels, different coverage areas, and/or different effects on interference in the wireless network 100. For example, macro base stations may have a high transmit power level (e.g., 5 to 40 watts), while pico base stations, femto base stations, and relay base stations may have a lower transmit power level (e.g., 0.1 to 2 watts).

The network controller 130 may be coupled to or in communication with a set of base stations 110 and may provide coordination and control for these base stations 110. The network controller 130 may communicate with the base stations 110 via backhaul communication links. Base stations 110 may communicate with each other directly or indirectly via wireless or wired backhaul communication links.

UEs 120 may be dispersed throughout wireless network 100, and each UE 120 may be stationary or mobile. UE 120 may include, for example, an access terminal, a mobile station, and/or a subscriber unit. UE 120 may be a cellular telephone (e.g., a smart phone), a Personal Digital Assistant (PDA), a wireless modem, a wireless communication device, a handheld device, a laptop computer, a cordless phone, a Wireless Local Loop (WLL) station, a tablet device, a camera, a gaming device, a netbook, a smartbook, a super-book, a medical device, a biometric device, a wearable device (e.g., a smartwatch, smart clothing, smart glasses, a smartwristband, smart jewelry (e.g., a smartring or smart bracelet)), an entertainment device (e.g., a music device, a video device, and/or a satellite radio, etc.), a vehicle component or sensor, a smart meter/sensor, an industrial manufacturing device, a global positioning system device, and/or any other suitable device configured to communicate via a wireless medium.

Some UEs 120 may be considered Machine Type Communication (MTC) or evolved or enhanced machine type communication (eMTC) UEs. MTC UEs and/or eMTC UEs may include, for example, robots, drones, remote devices, sensors, meters, monitors, and/or location tags, which may communicate with a base station, another device (e.g., a remote device), or some other entity. Some UEs 120 may be considered internet of things (IoT) devices and/or may be implemented as NB-IoT (narrowband IoT) devices. Some UEs 120 may be considered customer premises equipment. UE120 may be included within a housing that houses components of UE120, such as processor components and/or memory components. In some examples, the processor component and the memory component may be coupled together. For example, a processor component (e.g., one or more processors) and a memory component (e.g., memory) may be operatively coupled, communicatively coupled, electronically coupled, and/or electrically coupled.

In general, any number of wireless networks 100 may be deployed in a given geographic area. Each wireless network 100 may support a particular RAT and may operate on one or more frequencies. A RAT may be referred to as a radio technology, an air interface, etc. The frequencies may be referred to as carriers, frequency channels, etc. Each frequency may support a single RAT in a given geographical area in order to avoid interference between wireless networks of different RATs. In some cases, NR or 5G RAT networks may be deployed.

In some examples, two or more UEs 120 (e.g., shown as UE 120a and UE 120 e) may communicate directly using one or more side-uplink channels (e.g., without using base station 110 as an intermediary to communicate with each other). For example, UE 120 may communicate using peer-to-peer (P2P) communication, device-to-device (D2D) communication, a vehicle-to-everything (V2X) protocol (e.g., which may include a vehicle-to-vehicle (V2V) protocol, a vehicle-to-infrastructure (V2I) protocol, or a vehicle-to-pedestrian (V2P) protocol), and/or a mesh network. In such examples, UE 120 may perform scheduling operations, resource selection operations, and/or other operations described elsewhere herein as being performed by base station 110.

Devices of wireless network 100 may communicate using electromagnetic spectrum that may be subdivided into various categories, bands, channels, etc., by frequency or wavelength. For example, devices of wireless network 100 may communicate using one or more operating frequency bands. In 5G NR, two initial operating bands have been identified as frequency range names FR1 (410 MHz-7.125 GHz) and FR2 (24.25 GHz-52.6 GHz). It should be appreciated that although a portion of FR1 is greater than 6GHz, FR1 is often (interchangeably) referred to as the "sub-6GHz" band in various documents and articles. Similar naming problems sometimes occur with respect to FR2, which is often (interchangeably) referred to in documents and articles as the "millimeter wave" band, although it is different from the Extremely High Frequency (EHF) band (30 GHz-300 GHz), which is identified by the International Telecommunications Union (ITU) as the "millimeter wave" band.

The frequency between FR1 and FR2 is often referred to as the mid-band frequency. Recent 5G NR studies have identified the operating band of these mid-band frequencies as frequency range designation FR3 (7.125 GHz-24.25 GHz). The frequency bands falling within FR3 may inherit FR1 characteristics and/or FR2 characteristics and may therefore effectively extend the characteristics of FR1 and/or FR2 into mid-band frequencies. In addition, higher frequency bands are currently being explored to extend 5G NR operation above 52.6 GHz. For example, three higher operating frequency bands have been identified as frequency range designations FR4a or FR4-1 (52.6 GHz-71 GHz), FR4 (52.6 GHz-114.25 GHz) and FR5 (114.25 GHz-300 GHz). Each of these higher frequency bands falls within the EHF frequency band.

In view of the above, unless specifically stated otherwise, it should be understood that the term "sub-6GHz" or similar term (if used herein) may broadly represent frequencies that may be below 6GHz, may be within FR1, or may include mid-band frequencies. Furthermore, unless specifically stated otherwise, it should be understood that if the term "millimeter wave" or the like is used herein, it may be broadly meant to include mid-band frequencies, frequencies that may be within FR2, FR4-a or FR4-1 and/or FR5, or may be within the EHF band. It is contemplated that the frequencies included in these operating bands (e.g., FR1, FR2, FR3, FR4-a, FR4-1, and/or FR 5) may be modified, and that the techniques described herein are applicable to those modified frequency ranges.

In some aspects, UE 120 may include a communication manager 140. As described in more detail elsewhere herein, the communication manager 140 can send assistance information to at least one of the first parent node or the second parent node related to simultaneous communication with the first parent node and the second parent node; and communicate with at least one of the first parent node or the second parent node based at least in part on the assistance information. Additionally or alternatively, communication manager 140 may perform one or more other operations described herein.

In some aspects, the base station 110 may include a communication manager 150. In some aspects, as described in more detail elsewhere herein, the communication manager 150 of the base station 110, such as a relay base station (e.g., BS110 d), may send assistance information to at least one of the first parent node or the second parent node relating to simultaneous communication with the first parent node and the second parent node; and communicate with at least one of the first parent node or the second parent node based at least in part on the assistance information. Additionally or alternatively, the communication manager 150 may perform one or more other operations described herein.

In some aspects, as described in more detail elsewhere herein, the base station 110 may be a first parent node of a wireless node (e.g., a UE or relay base station) that is doubly connected to the first parent node and a second parent node, and the communication manager 150 of the base station 110 may receive assistance information related to simultaneous communication of the wireless node with the first parent node and the second parent node; and communicate with the wireless node based at least in part on the assistance information. Additionally or alternatively, the communication manager 150 may perform one or more other operations described herein.

In some aspects, as described in more detail elsewhere herein, the base station 110 may be a first parent node of a wireless node (e.g., a UE or relay base station) that is doubly connected to the first parent node and a second parent node, and the communication manager 150 of the base station 110 may send assistance information to at least one of the second parent node, a central unit, or the wireless node that relates to simultaneous communication of the wireless node with the first parent node and the second parent node; and communicate with the wireless node based at least in part on the assistance information. Additionally or alternatively, the communication manager 150 may perform one or more other operations described herein.

As noted above, fig. 1 is provided as an example. Other examples may differ from the examples described with respect to fig. 1.

Fig. 2 is a schematic diagram illustrating an example 200 of a base station 110 in a wireless network 100 in communication with a UE 120 in accordance with the present disclosure. Base station 110 may be equipped with a set of antennas 234a through 234T, such as T antennas (T.gtoreq.1). UE 120 may be equipped with a set of antennas 252a through 252R, such as R antennas (r≡1).

At base station 110, transmit processor 220 may receive data intended for UE 120 (or a set of UEs 120) from data source 212. Transmit processor 220 may select one or more Modulation and Coding Schemes (MCSs) for UE 120 based at least in part on one or more Channel Quality Indicators (CQIs) received from UE 120. Base station 110 may process (e.g., encode and modulate) data for UE 120 based at least in part on the MCS selected for UE 120 and may provide data symbols for UE 120. Transmit processor 220 may process system information (e.g., for semi-Static Resource Partitioning Information (SRPI)) and control information (e.g., CQI requests, grants, and/or upper layer signaling) and provide overhead symbols and control symbols. The transmit processor 220 may generate reference symbols for reference signals, e.g., cell-specific reference signals (CRS) or demodulation reference signals (DMRS), and synchronization signals, e.g., primary Synchronization Signals (PSS) and Secondary Synchronization Signals (SSS). A Transmit (TX) multiple-input multiple-output (MIMO) processor 230 may perform spatial processing (e.g., precoding) on the data symbols, control symbols, overhead symbols, and/or reference symbols, if applicable, and may provide a set of output symbol streams (e.g., T output symbol streams) to a corresponding set of modems 232 (e.g., T modems), shown as modems 232a through 232T. For example, each output symbol stream may be provided to a modulator component (shown as MOD) of modem 232. Each modem 232 may process a respective output symbol stream (e.g., for OFDM) using a respective modulator component to obtain an output sample stream. Each modem 232 may also process (e.g., convert to analog, amplify, filter, and/or upconvert) the output sample stream using a respective modulator component to obtain a downlink signal. Modems 232a through 232T may transmit a set of downlink signals (e.g., T downlink signals) via a set of corresponding antennas 234 (e.g., T antennas) (shown as antennas 234a through 234T).

At UE 120, a set of antennas 252 (shown as antennas 252a through 252R) may receive downlink signals from base station 110 and/or other base stations 110 and a set of received signals (e.g., R received signals) may be provided to a set of modems 254 (e.g., R modems) (shown as modems 254a through 254R). For example, each received signal may be provided to a demodulator component (shown as DEMOD) of modem 254. Each modem 254 may use a corresponding demodulator component to condition (e.g., filter, amplify, downconvert, and/or digitize) the received signal to obtain input samples. Each modem 254 may further process the input samples (e.g., for OFDM) using a demodulator assembly to obtain received symbols. MIMO detector 256 may obtain the received symbols from modem 254, may perform MIMO detection on the received symbols, if applicable, and may provide detected symbols. Receive processor 258 may process (e.g., demodulate and decode) the detected symbols, may provide decoded data for UE 120 to a data sink 260, and may provide decoded control information and system information to a controller/processor 280. The term "controller/processor" may refer to one or more controllers, one or more processors, or a combination thereof. The channel processor may determine a Reference Signal Received Power (RSRP) parameter, a Received Signal Strength Indicator (RSSI) parameter, a Reference Signal Received Quality (RSRQ) parameter, and/or a CQI parameter, among others. In some examples, one or more components of UE 120 may be included in housing 284.

The network controller 130 may include a communication unit 294, a controller/processor 290, and a memory 292. For example, the network controller 130 may include one or more devices in a core network. The network controller 130 may communicate with the base station 110 via a communication unit 294.

The one or more antennas (e.g., antennas 234a through 234t and/or antennas 252a through 252 r) may include or be included in one or more antenna panels, one or more antenna groups, one or more sets of antenna elements, and/or one or more antenna arrays, etc. The antenna panel, antenna group, set of antenna elements, and/or antenna array may include one or more antenna elements (within a single housing or multiple housings), a set of coplanar antenna elements, a set of non-coplanar antenna elements, and/or one or more antenna elements coupled to one or more transmit and/or receive components (such as one or more components in fig. 2).

On the uplink, at UE 120, transmit processor 264 may receive and process data from data source 262 as well as control information from controller/processor 280 (e.g., for reports including RSRP, RSSI, RSRQ and/or CQI). Transmit processor 264 may generate reference symbols for one or more reference signals. The symbols from transmit processor 264 may be precoded by a TX MIMO processor 266 if applicable, further processed by modem 254 (e.g., for DFT-s-OFDM or CP-OFDM), and transmitted to base station 110. In some examples, modem 254 of UE 120 may include a modulator and a demodulator. In some examples, UE 120 includes a transceiver. The transceiver may include any combination of antennas 252, modems 254, MIMO detector 256, receive processor 258, transmit processor 264, and/or TX MIMO processor 266. The processor (e.g., controller/processor 280) and memory 282 may use the transceiver to perform aspects of any of the methods described herein (e.g., with reference to fig. 7-13).

At base station 110, uplink signals from UE 120 and other UEs may be received by antennas 234, processed by modems 232 (e.g., the demodulator components of modems 232, shown as DEMODs), detected by MIMO detector 236 (if applicable), and further processed by receive processor 238 to obtain decoded data and control information transmitted by UE 120. The receive processor 238 may provide the decoded data to a data sink 239 and the decoded control information to a controller/processor 240. The base station 110 may include a communication unit 244 and may communicate with the network controller 130 via the communication unit 244. Base station 110 may include a scheduler 246 to schedule one or more UEs 120 for downlink and/or uplink communications. In some examples, modem 232 of base station 110 may include a modulator and a demodulator. In some examples, base station 110 includes a transceiver. The transceiver may include any combination of antennas 234, modems 232, MIMO detector 236, receive processor 238, transmit processor 220, and/or TX MIMO processor 230. A processor (e.g., controller/processor 240) and memory 242 may use a transceiver to perform aspects of any of the methods described herein (e.g., with reference to fig. 7-13).

The controller/processor 240 of the base station 110, the controller/processor 280 of the UE 120, and/or any other components in fig. 2 may perform one or more techniques associated with efficient simultaneous communication of dual-connectivity wireless nodes, as described in more detail elsewhere herein. For example, controller/processor 240 of base station 110, controller/processor 280 of UE 120, and/or any other component in fig. 2 may perform or direct operations such as process 900 of fig. 9, process 1000 of fig. 10, process 1100 of fig. 11, and/or other processes as described herein. Memories 242 and 282 may store data and program codes for base station 110 and UE 120, respectively. In some examples, memory 242 and/or memory 282 may include a non-transitory computer-readable medium storing one or more instructions (e.g., code and/or program code) for wireless communication. For example, the one or more instructions, when executed by the one or more processors of base station 110 and/or UE 120 (e.g., directly, or after compilation, conversion, and/or interpretation), may cause the one or more processors, UE 120, and/or base station 110 to perform or direct, for example, process 900 of fig. 9, process 1000 of fig. 10, process 1100 of fig. 11, and/or other processes as described herein. In some examples, executing the instructions may include: run instructions, translate instructions, compile instructions, and/or interpret instructions, etc. In some aspects, the wireless node described herein is the base station 110 shown in fig. 2, is included in the base station 110, or includes one or more components of the base station 110. In some aspects, the wireless node described herein is UE 120 shown in fig. 2, included in UE 120, or comprising one or more components of UE 120. In some aspects, the parent node described herein is the base station 110 shown in fig. 2, is included in the base station 110, or includes one or more components of the base station 110.

In some aspects, a wireless node comprises: means for transmitting assistance information related to simultaneous communication of the wireless node with the first parent node and the second parent node to at least one of the first parent node or the second parent node; and/or means for communicating with at least one of the first parent node or the second parent node based at least in part on the assistance information. In some aspects, the means for the network node to perform the operations described herein may include, for example, one or more of: communication manager 150, transmit processor 220, TX MIMO processor 230, modem 232, antenna 234, MIMO detector 236, receive processor 238, controller/processor 240, memory 242, or scheduler 246. In some aspects, the means for the UE to perform the operations described herein may include, for example, one or more of: communication manager 140, antenna 252, modem 254, MIMO detector 256, receive processor 258, transmit processor 264, TX MIMO processor 266, controller/processor 280, or memory 282.

In some aspects, the first parent node comprises: means for receiving assistance information related to simultaneous communication of the wireless node with the first parent node and the second parent node; and/or means for communicating with the wireless node based at least in part on the assistance information. In some aspects, the means for the first parent node to perform the operations described herein may include, for example, one or more of: communication manager 150, transmit processor 220, TX MIMO processor 230, modem 232, antenna 234, MIMO detector 236, receive processor 238, controller/processor 240, memory 242, or scheduler 246.

In some aspects, the first parent node comprises: means for transmitting auxiliary information to at least one of the second parent node, the central unit, or the wireless node relating to simultaneous communication of the wireless node with the first parent node and the second parent node; and/or means for communicating with the wireless node based at least in part on the assistance information. In some aspects, the means for the first parent node to perform the operations described herein may include, for example, one or more of: communication manager 150, transmit processor 220, TX MIMO processor 230, modem 232, antenna 234, MIMO detector 236, receive processor 238, controller/processor 240, memory 242, or scheduler 246.

Although the blocks in fig. 2 are shown as distinct components, the functionality described above with respect to the blocks may be implemented in a single hardware, software, or combined component or in various combinations of components. For example, the functions described with respect to transmit processor 264, receive processor 258, and/or TX MIMO processor 266 may be performed by controller/processor 280 or under the control of controller/processor 280.

As noted above, fig. 2 is provided as an example. Other examples may differ from the example described with respect to fig. 2.

Deployment of a communication system, such as a 5G NR system, may be arranged in a variety of ways with various components or parts. In a 5GNR system or network, network nodes, network entities, mobility elements of a network, radio Access Network (RAN) nodes, core network nodes, network elements, base stations, or network devices may be implemented in an aggregated or decomposed architecture. For example, a base station (e.g., a Node B (NB), evolved NB (eNB), NR BS, 5G NB, access Point (AP), TRP, or cell, etc.) or one or more units (or one or more components) performing base station functions may be implemented as an aggregated base station (also referred to as a standalone base station or a monolithic base station) or a decomposed base station. A "network entity" or "network node" may refer to an aggregated base station, a decomposed base station, or to one or more units of a decomposed base station (e.g., one or more Central Units (CUs), one or more Distributed Units (DUs), one or more Radio Units (RUs), or a combination thereof).

An aggregated base station (e.g., an aggregated network node) may be configured to utilize a radio protocol stack that is physically or logically integrated within a single RAN node (e.g., within a single device or unit). An decomposed base station (e.g., decomposed network node) may be configured to utilize a protocol stack that is physically or logically distributed between two or more units (e.g., one or more CUs, one or more DUs, or one or more RUs). In some examples, a CU may be implemented within a network node, and one or more DUs may be co-located with the CU, or alternatively, may be geographically or virtually distributed among one or more other network nodes. A DU may be implemented to communicate with one or more DUs. Each of the CUs, DUs, and RUs may also be implemented as virtual units, such as Virtual Central Units (VCUs), virtual Distributed Units (VDUs), or Virtual Radio Units (VRUs), etc.

Base station type operation or network design may take into account the aggregate nature of the base station functions. For example, the split base station may be utilized in an Integrated Access and Backhaul (IAB) network, an open radio access network (O-RAN, such as a network configuration sponsored by the O-RAN alliance), or a virtual radio access network (vRAN, also referred to as a cloud radio access network (C-RAN)) to facilitate scaling of the communication system by separating the base station functionality into one or more units that may be deployed separately. A disaggregated base station may include functionality implemented across two or more units located in various physical locations, as well as functionality implemented virtually for at least one unit, which may enable flexibility in network design. Each unit of the base station may be configured for wired or wireless communication with at least one other unit of the base station.

Fig. 3 is a diagram illustrating an example 300 of a radio access network according to the present disclosure.

Fig. 3 is a diagram illustrating an example 300 of a radio access network according to the present disclosure. As shown by reference numeral 305, a conventional (e.g., 3G, 4G, or LTE) radio access network may include a plurality of base stations 310 (e.g., access Nodes (ANs)), wherein each base station 310 communicates with a core network via a wired backhaul link 315, such as a fiber optic connection. Base station 310 may communicate with UE 320 via access link 325 (which may be a wireless link). In some aspects, the base station 310 shown in fig. 3 may be the base station 110 shown in fig. 1. In some aspects, UE 320 shown in fig. 3 may be UE 120 shown in fig. 1.

As indicated by reference numeral 330, the radio access network may include a wireless backhaul network, sometimes referred to as an IAB network. In an IAB network, at least one base station is an anchor base station 335, the anchor base station 335 communicating with a core network via a wired backhaul link 340 (such as a fiber optic connection). Anchor base station 335 may also be referred to as an IAB provider (or IAB-provider). The IAB network may include one or more non-anchor base stations 345, sometimes referred to as relay base stations or IAB nodes (or IAB-nodes). The non-anchor base stations 345 may communicate with the anchor base stations 335, directly or indirectly, via one or more backhaul links 350 (e.g., via one or more non-anchor base stations 345) to form a backhaul path to the core network for carrying backhaul traffic. Backhaul link 350 may be a wireless link. The anchor base station 335 and/or the non-anchor base station 345 may communicate with one or more UEs 355 via an access link 360, which access link 360 may be a wireless link for carrying access traffic. In some aspects, the anchor base station 335 and/or the non-anchor base station 345 shown in fig. 3 may be the base station 110 shown in fig. 1. In some aspects, UE 355 shown in fig. 3 may be UE 120 shown in fig. 1.

As shown by reference numeral 365, in some aspects, a radio access network including an IAB network may employ millimeter wave technology and/or directional communication (e.g., beamforming) for communication between base stations and/or UEs (e.g., between two base stations, between two UEs, and/or between a base station and a UE). For example, wireless backhaul links 370 between base stations may use millimeter wave signals to carry information and/or may be directed toward a target base station using beamforming. Similarly, wireless access link 375 between a UE and a base station may use millimeter wave signals and/or may be oriented towards a target wireless node (e.g., a UE and/or a base station). In this way, inter-link interference may be reduced.

The configuration of the base station and UE in fig. 3 is shown as an example, and other examples are contemplated. For example, one or more of the base stations shown in fig. 3 may be replaced with one or more UEs that communicate via a UE-to-UE access network (e.g., a peer-to-peer network or a device-to-device network). In this case, an anchor node may refer to a UE that communicates directly with a base station (e.g., an anchor base station or a non-anchor base station).

As noted above, fig. 3 is provided as an example. Other examples may differ from the example described with respect to fig. 3.

Fig. 4 is a diagram illustrating an example 400 of an IAB network architecture according to the present disclosure.

As shown in fig. 4, the IAB network may include an IAB provider 405 (shown as an IAB-provider) that connects to the core network via a wired connection (shown as a wired backhaul). For example, the Ng interface of the IAB provider 405 may terminate at the core network. Additionally or alternatively, the IAB donor 405 may be connected to one or more devices of a core network providing core access and mobility management functions (AMFs). In some aspects, the IAB provider 405 may include a base station 110, such as an anchor base station, as described above in connection with fig. 3. As shown, IAB donor 405 may include a CU, which may perform Access Node Controller (ANC) functions and/or AMF functions. A CU may configure a DU of the IAB donor 405 and/or may configure one or more IAB nodes 410 (e.g., mobile Terminals (MTs) and/or DUs of the IAB nodes 410) connected to the core network via the IAB donor 405. Thus, a CU of the IAB provider 405 may control and/or configure the entire IAB network connected to the core network via the IAB provider 405, such as by using control messages and/or configuration messages (e.g., radio Resource Control (RRC) configuration messages or F1 application protocol (F1-AP) messages).

As further shown in fig. 4, the IAB network may include an IAB node 410 (shown as IAB-node 1, IAB-node 2, and IAB-node 3) connected to the core network via an IAB provider 405. As shown, the IAB node 410 may include MT functions (sometimes also referred to as UE functions (UEFs)) and may include DU functions (sometimes also referred to as Access Node Functions (ANFs)). The MT function of an IAB node 410 (e.g., a child node) may be controlled and/or scheduled by another IAB node 410 (e.g., a parent node of the child node) and/or by an IAB provider 405. The DU function of an IAB node 410 (e.g., a parent node) may control and/or schedule other IAB nodes 410 (e.g., child nodes of the parent node) and/or UEs 120. Thus, a DU may be referred to as a scheduling node or scheduling component, while an MT may be referred to as a scheduled node or scheduled component. In some aspects, the IAB provider 405 may include DU functionality rather than MT functionality. That is, IAB provider 405 may configure, control, and/or schedule communication of IAB node 410 and/or UE 120. UE 120 may include only MT functions and not DU functions. That is, communication of UE 120 may be controlled and/or scheduled by IAB donor 405 and/or IAB node 410 (e.g., a parent node of UE 120).

When a first node controls and/or schedules communications for a second node (e.g., when the first node provides DU functionality for MT functionality of the second node), the first node may be referred to as a parent node of the second node, and the second node may be referred to as a child node of the first node. The child node of the second node may be referred to as a grandchild node of the first node. Thus, the DU function of the parent node may control and/or schedule communications for the child nodes of the parent node. The parent node may be an IAB donor 405 or an IAB node 410 and the child node may be an IAB node 410 or a UE 120. Communication of MT functions of the child node may be controlled and/or scheduled by a parent node of the child node.

As further shown in fig. 4, the link between UE 120 (e.g., it has only MT functionality and no DU functionality) and IAB provider 405 or between UE 120 and IAB node 410 may be referred to as access link 415. The access link 415 may be a wireless access link that provides radio access to the core network to the UE 120 via the IAB provider 405 and optionally via one or more IAB nodes 410. Thus, the network shown in fig. 4 may be referred to as a multi-hop network or a wireless multi-hop network.

As further shown in fig. 4, the link between the IAB provider 405 and the IAB node 410 or between two IAB nodes 410 may be referred to as a backhaul link 420. Backhaul link 420 may be a wireless backhaul link that provides radio access to the core network to IAB node 410 via IAB provider 405 and optionally via one or more other IAB nodes 410. In an IAB network, network resources (e.g., time resources, frequency resources, and/or space resources) for wireless communication may be shared between access link 415 and backhaul link 420. In some aspects, the backhaul link 420 can be a primary backhaul link or a secondary backhaul link (e.g., a backup backhaul link). In some aspects, a secondary backhaul link may be used if the primary backhaul link fails, becomes congested and/or becomes overloaded, etc. For example, if the primary backhaul link between IAB-node 2 and IAB-node 1 fails, the backup link 425 between IAB-node 2 and IAB-node 3 may be used for backhaul communication. As used herein, a node or wireless node may refer to an IAB donor 405 or an IAB node 410.

As noted above, fig. 4 is provided as an example. Other examples may differ from the example described with respect to fig. 4.

Fig. 5 is a schematic diagram illustrating an example 500 of resource types in an IAB network according to the present disclosure.

In an IAB network, time domain resources (sometimes referred to as time resources) may be configured to be downlink only, uplink only, flexible, or unavailable (e.g., unavailable). When the time resource is configured to be downlink-only for the wireless node, the time resource may be available only for downlink communication for the wireless node and not for uplink communication. Similarly, when a time resource is configured to be uplink-only for a wireless node, the time resource may be available only for uplink communication for the wireless node and not for downlink communication. When the time resource is configured to be flexible for a wireless node, the time resource may be available for both downlink and uplink communications for the wireless node. When a time resource is configured to be unavailable to a wireless node, the time resource may not be used for any communication by the wireless node.

Examples of downlink communications include: a Synchronization Signal Block (SSB), a channel state information reference signal (CSI-RS), physical Downlink Control Channel (PDCCH) communications, and/or Physical Downlink Shared Channel (PDSCH) communications. Examples of uplink communications include: physical Random Access Channel (PRACH) communication, physical Uplink Control Channel (PUCCH) communication, physical Uplink Shared Channel (PUSCH) communication, and/or Sounding Reference Signal (SRS).

The time resources configured as downlink only, uplink only or flexible in the IAB network may also be configured as hard or soft resources. When the time resource is configured as a hard resource for the wireless node, the time resource is always available for communication by the wireless node. For example, hard downlink-only time resources are always available for downlink communication only for wireless nodes, hard uplink-only time resources are always available for uplink communication only for wireless nodes, and hard flexible time resources are always available for uplink and downlink communication for wireless nodes.

When the time resource is configured as a soft resource for the wireless node, the availability of the time resource is controlled by the parent node of the wireless node. For example, the parent node may indicate (e.g., explicitly or implicitly) whether soft time resources are available for communication by the wireless node. Thus, the soft time resource may be in one of two states: a schedulable state (e.g., when soft time resources are available for scheduling and/or communication by the wireless node) and a non-schedulable state (e.g., when soft time resources are not available for scheduling and are not available for communication by the wireless node).

For example, when a parent node of the wireless node indicates that soft downlink-only time resources are available, the soft downlink-only time resources are available only for downlink communications of the wireless node. Similarly, when the parent node of the wireless node indicates that soft uplink-only time resources are available, the soft uplink-only time resources are available only for uplink communications of the wireless node. When the parent node of the wireless node indicates that soft flexible time resources are available, the soft flexible time resources are available only for uplink and downlink communications of the wireless node.

As one example, and as shown by reference numeral 505, a time resource may be configured to be hard for a child node and may be configured to be unavailable for a parent node of the child node. In this case, the parent node cannot communicate using the time resource, but the child node may schedule communications in and/or communicate using the time resource. The configuration may reduce interference between the parent node and the child node and/or may reduce scheduling conflicts between the parent node and the child node.

As another example, and as shown by reference numeral 510, a time resource may be configured as unavailable to a child node and may be configured as hard, soft, or unavailable to a parent node (e.g., depending on network configuration, network conditions, and/or configuration of the parent node). In this case, the child node cannot schedule communication in the time resource and cannot use the time resource for communication.

As another example, and as shown by reference numeral 515, the time resources may be configured to be soft for child nodes and hard, soft, or unavailable for parent nodes (e.g., depending on network configuration, network conditions, and/or configuration of parent nodes of the parent nodes, etc.). In this case, the child node cannot schedule or communicate using the time resource unless the child node receives (e.g., explicitly or implicitly) an indication (e.g., a release indication) from the parent node that the time resource is available (e.g., released) for use by the child node. If the child node receives such an indication, the child node may schedule communications in and/or use the time resource for communications.

As noted above, fig. 5 is provided as an example. Other examples are also possible and may differ from the examples described with respect to fig. 5.

Fig. 6 is a diagram illustrating examples 600 and 620 of dual connectivity IAB nodes according to the present disclosure. A dual connection may refer to an operational mode in which a UE or an IAB node (e.g., an MT of an IAB node) may be configured to utilize radio resources of two (or more) schedulers (e.g., two or more parent DUs). As shown in fig. 6, example 600 illustrates an example of intra-donor (donor) dual connectivity for an IAB node, and example 620 illustrates an example of inter-donor dual connectivity for an IAB node.

As shown in examples 600 and 620, the IAB node 605 may be dual-connected to a first parent DU 610a and a second parent DU 610b. The IAB node 605 may include MT units (also referred to as IAB-MTs) and DUs (also referred to as IAB-DUs). The IAB-MT may be controlled and/or scheduled by parent DUs 610a and 610b. The IAB-MT may receive downlink communications from the first parent DU 610a and/or the second parent DU 610b, and the IAB MT may transmit uplink communications to the first parent DU 610a and/or the second parent DU 610b. The IAB-DUs may control and/or schedule one or more UEs (e.g., UE 120) and/or one or more other IAB nodes (e.g., child IAB nodes). The IAB-DUs may send downlink communications to one or more UEs and/or one or more sub-IAB nodes, and the IAB-DUs may receive uplink communications from one or more UEs and/or one or more sub-IAB nodes.

The first parent DU 610a may be a DU of a first parent node of IAB node 605 and the second parent DU 610b may be a DU of a second parent node of IAB node 605. For example, parent DUs 610a and 610b may be IAB-DUs of a parent IAB node of IAB node 605, IAB donor DUs, or a combination thereof. In some examples, parent DUs 610a and 610b may communicate with IAB node 605 on different serving cells. In some examples, one parent node (e.g., first parent DU 610a or second parent DU 610 b) may be a Master Node (MN) and the other parent node (e.g., second parent DU 610b or first parent DU 610 a) may be a Slave Node (SN). The IAB node 605 may communicate with a master node via a Master Cell Group (MCG), and the IAB node 605 may communicate with a secondary node via a Secondary Cell Group (SCG). In some examples, the connection between the IAB node 605 and the parent nodes (e.g., parent DUs 610a and 610 b) may be located in different frequency bands, such as in different frequency bands within the same frequency range (e.g., FR 2), or in the same frequency band (e.g., an in-band dual connection).

As shown in example 600, in some aspects, first parent DU 610a and second parent DU 610b may share the same IAB donor CU 615, which may be referred to as an "intra-donor" dual connection. In this case, the same IAB donor CU 615 may support a first parent DU 610a and a second parent DU 610b. For example, IAB donor CU 615 may provide a cell resource configuration to first parent DU 610a and second parent DU 610b. The cell resource configuration may indicate at least a portion of the information described with respect to fig. 5.

As shown in example 620, in some aspects, first parent DU 610a and second parent DU 610b may be supported by different IAB donor CUs, which may be referred to as "inter-donor" dual connectivity. As shown in example 620, first IAB donor CU 615a may support a first parent DU 610a and second IAB donor CU 615b may support a second parent DU 610b. First IAB donor CU 615a may provide one or more cell resource configurations (e.g., a respective cell resource configuration for each cell served by first parent DU 610 a) to first parent DU 610 a. Second IAB donor CU 615b may provide one or more cell resource configurations to second parent DU 610b (e.g., a respective cell resource configuration for each cell served by second parent DU 610 b). As further shown in example 620, first IAB donor CU 615a and second IAB donor CU 615b may communicate over an interface (e.g., an Xn interface and/or another similar interface). In some cases, because parent DUs 610a and 610b are associated with different CUs (e.g., IAB donor CUs 615a and 615 b), coordination between parent DUs 610a and 610b (e.g., to avoid and/or resolve possible collisions) may be more difficult in a inter-donor dual-connection than in a donor connection.

In some aspects, an IAB-MT of a dual-connectivity IAB node 605 (or dual-connectivity UE) may be capable of communicating with two parent nodes (e.g., parent DUs 610a and 610 b) simultaneously. For example, in some cases, an IAB-MT (or UE) may be able to transmit and receive simultaneously with two parent nodes. In an intra-donor dual connectivity case (e.g., example 600), the IAB donor CU may be made aware of the capability of the IAB-MT to simultaneously transmit and receive multiple serving cells in a frequency band configured by two parent nodes, e.g., via an indication sent from the IAB-MT to one of the parent nodes. In this case, the IAB donor CU may determine whether to configure resources for simultaneous transmission and reception between the IAB-MT and the parent node based on the indicated capabilities of the IAB-MT. However, whether or not the IAB-MT (or UE) is capable of supporting simultaneous transmissions and receptions with a parent node, other factors may affect simultaneous communications with the parent node (e.g., simultaneous reception from two parent nodes, simultaneous transmissions to two parent nodes, and/or simultaneous reception from one parent node and transmissions to another parent node). For example, some combinations of beams used by an IAB-MT (or UE) for simultaneous communication between the IAB-MT (or UE) and a parent node may cause a significant amount of interference to the communication between the IAB-MT (or UE) and the parent node. Such interference reduces throughput, increases the chance of radio link failure, and relies on strong interference mitigation, which consumes power, processing resources, and network overhead.

Some techniques and apparatuses described herein enable a wireless node (e.g., an IAB-MT or a UE) that is doubly connected to a first parent node and a second parent node to send assistance information to at least one of the first parent node or the second parent node that relates to simultaneous communication of the wireless node with the first parent node and the second parent node. For example, the wireless node may send auxiliary information to the parent node including requested configuration information for communicating with the parent node (e.g., to reduce interference to simultaneous communications with another parent node) or configuration information for communicating between the wireless node and another parent node (e.g., to allow the parent node to select a configuration that reduces interference to simultaneous communications). In some aspects, the wireless node may communicate with the parent node based at least in part on the assistance information. In some aspects, a parent node may receive assistance information related to simultaneous communication of a wireless node with a first parent node and a second parent node, and the parent node may transmit communication with the wireless node based at least in part on the assistance information (e.g., when another parent node is in simultaneous communication with the wireless node). In some aspects, a parent node may send assistance information from a wireless node, another parent node, or a CU to another parent node, CU, or wireless node. For example, a parent node may send a recommended configuration for communication between the wireless node and another parent node to another parent node, to the wireless node (e.g., to forward to another parent node), or to a CU (e.g., to transmit to another parent node via a CU of another parent node). As a result, configurations for communication of the wireless node with the parent node may be coordinated to improve efficiency and reduce interference to simultaneous communication of the wireless node with the parent node. Such reduced interference may increase throughput, reduce the chance of radio link failure, and reduce power consumption, processing resources, and network overhead associated with aggressive interference mitigation.

As noted above, fig. 6 is provided as an example. Other examples may differ from the example described with respect to fig. 6.

Fig. 7 is a diagram illustrating an example 700 associated with efficient simultaneous communication of dual-connectivity wireless nodes in accordance with the present disclosure. As shown in fig. 7, example 700 includes communication between wireless node 705, first parent node 710a, second parent node 710b, first CU 715a, and second CU 715 b. Wireless node 705 may be dual-connected to a first parent node 710a and a second parent node 710b. In some aspects, the wireless node 705 may be or may be included in an IAB node (e.g., IAB node 605 and/or IAB node 410). In some aspects, the wireless node may be an IAB-MT. In some aspects, wireless node 705 may be a UE (e.g., UE 120). The first parent node 710a and the second parent node 710b may be parent nodes for the wireless node 705. In some aspects, the first parent node 710a and the second parent node 710b may be or may be included in an IAB donor (e.g., IAB donor 405), an IAB node (e.g., IAB node 410), or a combination thereof. In some aspects, the first parent node 710a may be a first parent DU (e.g., a DU of an IAB donor or IAB-DU) and the second parent node 710b may be a second parent DU (e.g., a DU of an IAB donor or IAB-DU). In some aspects, the first parent node 710a may be a MN and the second parent node 710b may be a SN. In some aspects, the second parent node 710b may be a MN and the first parent node 710a may be a SN.

In some aspects, a first parent node 710a may be associated with a first CU 715a and a second parent node 710b may be associated with a second CU 715 b. In some aspects, the first CU 715a may be a first IAB donor CU and the second CU 715b may be a second IAB donor CU. For example, first parent node 710a and second parent node 710b may be associated with different IAB donor CUs, and the dual connection between wireless node 705 and parent nodes 710a and 710b may be an inter-donor dual connection. In this case, the first CU 715a and the second CU 715b may communicate over an interface (e.g., an Xn interface or another similar interface). In some aspects, the first parent node 710a and the second parent node 710b may be associated with the same IAB donor CU, and the dual connection between the wireless node 705 and the parent nodes 710a and 710b may be an intra-donor dual connection. In this case, the first CU 715a and the second CU 715b may be the same IAB donor CU.

As shown in fig. 7 and by reference numeral 720, wireless node 705 may transmit an indication to first parent node 710a and/or second parent node 710b of the capabilities of wireless node 705 for simultaneous communication with first parent node 710a and second parent node 710 b. In some aspects, the indication may indicate: whether the wireless node 705 is capable of transmitting to and receiving from one parent node (e.g., the first parent node 710a or the second parent node 710 b) at the same time, and the other parent node (e.g., the other of the first parent node 710a or the second parent node 710 b). For example, the indication may include: an indication of the ability of wireless node 705 to transmit and receive simultaneously on multiple serving cells in the frequency band.

In some aspects, an indication of the capabilities of wireless node 705 may be provided to first CU 715a and second CU 715b. In some aspects, wireless node 705 may send an indication to one of the parent nodes (e.g., first parent node 710a or second parent node 710 b) and the CU associated with that parent node may send an indication to the other CU through an interface between the CUs. For example, as shown in fig. 7, wireless node 705 may send an indication of the capability for simultaneous communication to first parent node 710 a. First parent node 710a may receive the indication from wireless node 705 and first parent node 710a may send the indication to first CU 715 a. First CU 715a may send an indication to second CU 715b, and second CU 715b may then send an indication to second parent node 710b and/or configure second parent node 710b based at least in part on the indication.

In some aspects, in the case of an inter-donor dual connection, an indication of the capability of wireless node 705 for simultaneous communication may be exchanged between first CU 715a and second CU 715b as part of an SN addition procedure in which a connection between wireless node 705 and the SN is established. For example, in the case where the first parent node 710a is a MN and the second parent node 710b is a SN, the wireless node 705 may send an indication to the first parent node 710 a. As part of the SN addition process, the first parent node 710a may send an indication to the first CU 715a, and the first CU 715a may provide an indication to the second CU 715 b.

As shown in fig. 7 and further by reference numeral 725, the wireless node 705 may transmit assistance information to the first parent node 710a and/or the second parent node 710b related to simultaneous communication of the wireless node 705 with the first parent node 710a and the second parent node 710 b. In some aspects, wireless node 705 may send assistance information to either or both of parent nodes 710a and 710 b. Additionally or alternatively, in some aspects, wireless node 705 may send assistance information to one or both of CUs 715a and 715 b.

As shown in fig. 7, wireless node 705 may transmit assistance information to first parent node 710a that relates to the simultaneous communication of wireless node 705 with first parent node 710a and second parent node 710 b. In some aspects, wireless node 705 may send assistance information to second parent node 710b in addition to or in lieu of first parent node 710 a. In some aspects, wireless node 705 may transmit assistance information to first parent node 710a that includes requested configuration information for communicating between wireless node 705 and first parent node 710a (e.g., to reduce interference to simultaneous communication between wireless node 705 and second parent node 710 b). In some aspects, wireless node 705 may send to first parent node 710a assistance information including configuration information for communication between the wireless node and another parent node (e.g., to allow first parent node 710a to select a configuration for communication between wireless node 705 and first parent node 710a that reduces interference to simultaneous communication between wireless node 705 and second parent node 710 b).

In some aspects, the wireless node 705 may send an indication to the first parent node 710a regarding a requested transmit (Tx) beam (e.g., a preferred/desired Tx beam) and/or a requested receive (Rx) beam (e.g., a preferred/desired Rx beam) for communicating with the first parent node 710 a. For example, wireless node 705 may select a requested Tx beam and/or a requested Rx beam based at least in part on Tx beams and/or Rx beams configured for communication with second parent node 710b (e.g., select a requested Tx/Rx beam to avoid interference with simultaneous communication with first parent node 710a and second parent node 710 b). In some aspects, the wireless node 705 may send an indication to the first parent node 710a regarding one or more Tx beams and/or one or more Rx beams that are not preferred for communication with the first parent node 710 a. For example, based at least in part on the configured Tx beams and/or Rx beams for communication with the second parent node 710b, the wireless node 705 may identify one or more Tx beams and/or one or more Rx beams that would cause interference to simultaneous communication with the first parent node 710a and the second parent node 710 b.

In some aspects, the wireless node 705 may send an indication to the first parent node 710a that the wireless node 705 is configured for one or more Tx beams and/or one or more Rx beams for communication with the second parent node 710 b. For example, based at least in part on the indication that wireless node 705 is configured as Tx and/or Rx beams for communication with second parent node 710b, second parent node 710b (or first CU 715 a) may select beams for wireless node 705 to use for communication by first parent node 710a (e.g., to reduce interference to simultaneous communication between wireless node 705 and parent nodes 710a and 710 b).

In some aspects, wireless node 705 may include: an indication of the requested Tx and/or Rx beams, non-preferred Tx and/or Rx beams, and/or configured Tx and/or Rx beams for communication with the second parent node 710b in a Medium Access Control (MAC) control element (MAC-CE) or in Uplink Control Information (UCI) (e.g., in PUCCH transmission). For example, the wireless node 705 may use a Transmission Configuration Indicator (TCI) status Identifier (ID), a spatial relationship information ID, or a reference signal ID (e.g., for CSI-RS, SRS, or SSB) to indicate Tx and/or Rx beams (e.g., requested Tx and/or Rx beams, non-preferred Tx and/or Rx beams, and/or configured Tx and/or Rx beams for communication with the second parent node 710 b).

In some aspects, wireless node 705 may send an indication to first parent node 710a of at least one of a requested guard symbol or a requested guard band for communication with first parent node 710 a. For example, the guard symbol may be a number of symbols in the time domain for antenna switching (e.g., switching between transmitting and receiving, and/or switching between communicating with the first parent node 710a and communicating with the second parent node 710 b). The guard band may be a frequency band in the frequency domain between frequency bands used for uplink and downlink communications and/or between communications with the first parent node 710a and communications with the second parent node 710 b. In some aspects, wireless node 705 may send to first parent node 710a an indication of a guard symbol and/or guard band provided by second parent node 710b (e.g., configured by second parent node 710 b) to wireless node 705.

In some aspects, wireless node 705 may send an indication to first parent node 710a regarding a requested downlink Tx power adjustment for first parent node 710a and/or a requested uplink Tx power (e.g., for a desired Power Spectral Density (PSD) range) for wireless node 705 for uplink communications to the first parent node. For example, wireless node 705 may determine a requested downlink Tx power adjustment and/or a requested uplink Tx power to reduce interference to simultaneous communications with first parent node 710a and second parent node 710 b. In some aspects, the requested downlink power adjustment may be associated with a specified time resource and/or a resource configured for simultaneous communication of wireless node 705 with parent nodes 710a and 710 b. In some aspects, the requested downlink power adjustment may be further associated with a spatial configuration (e.g., within one or more Rx beams to be used by wireless node 705). In some aspects, the wireless node 705 may include an indication of the requested downlink power adjustment in a MAC-CE, PUCCH communication (e.g., in UCI), or Channel State Information (CSI) report.

In some aspects, wireless node 705 may send an indication to first parent node 710a regarding downlink Rx power for downlink communications from second parent node 710b, uplink Tx power for uplink communications to second parent node 710b, and/or downlink transmit Tx adjustment for second parent node 710 b. For example, the first parent node 710a may determine a downlink power adjustment for the first parent node 710a and/or an uplink Tx power for the wireless node 705 for communication with the wireless node 705 based at least in part on an indication of a downlink Rx power from the second parent node 710b, an uplink Tx power to the second parent node 710b, and/or a downlink power adjustment for the second parent node 710 b.

In some aspects, wireless node 705 may send an indication to first parent node 710a regarding a requested downlink Tx timing adjustment for first parent node 710a and/or a requested uplink Tx timing for uplink communications to first parent node 710 a. In some aspects, the wireless node 705 may send an indication to the first parent node 710a regarding downlink Rx timing for downlink communications from the second parent node and/or uplink transmit timing for uplink communications to the second parent node.

In some aspects, the wireless node 705 may send an indication to the first parent node 710a regarding a requested downlink reference signal configuration and/or a requested uplink reference signal (e.g., DMRS) configuration associated with the first parent node 710a (e.g., for a downlink reference signal to be sent from the first parent node 710a to the wireless node 705 and/or for an uplink reference signal to be sent from the wireless node 705 to the first parent node 710 a). In some aspects, the wireless node 705 may send an indication to the first parent node 710a of at least one of a downlink reference signal configuration or an uplink reference signal (e.g., DMRS, CSI-RS, tracking Reference Signal (TRS), and/or SRS) configuration associated with the second parent node (e.g., a downlink reference signal and/or an uplink reference configured by the second parent node 710b for the wireless node 705).

In some aspects, the assistance information may be associated with resources (e.g., time and/or frequency resources) configured for simultaneous communication by the wireless node 705 with the first parent node 710a and the second parent node 710 b. For example, the assistance information sent to the first parent node 710a may indicate configuration information (e.g., requested configuration information for communication between the wireless node 705 and the first parent node 710a, and/or configuration information for communication between the wireless node 705 and the second parent node 710 b) to be used for resources configured for simultaneous communication (e.g., resources the wireless node 705 is configured to support). In some aspects, the assistance information may be associated with a set of time and/or frequency resources, such as the set of time and/or frequency resources indicated in the assistance information. In some aspects, different assistance information may be associated with different sets of time and/or frequency resources.

In some aspects, the assistance information may be associated with one or more resource types (flexible resources, downlink resources, and/or uplink resources). For example, the wireless node 705 may provide assistance information for only some types of resources. In some aspects, the assistance information may be associated with one or more types of signals or channels (e.g., PDSCH, PDCCH, PUSCH, PUCCH, and/or one or more reference signals, etc.). For example, wireless node 705 may provide assistance information for only some types of signals or channels.

In some aspects, wireless node 705 may send assistance information to only one parent node (e.g., first parent node 710a or second parent node 710 b). In some aspects, the wireless node 705 may send assistance information to the SN. For example, where the second parent node 710b is a MN and the first parent node 710a is a SN, the wireless node 705 may send assistance information to the first parent node 710 a. In this case, the second parent node 710b (e.g., MN) may configure the wireless node 705 to communicate with the second parent node 710b without receiving assistance information, and the first parent node 710a (e.g., SN) may configure the wireless node 705 to communicate with the first parent node 710a based at least in part on the assistance information received from the SN. For example, based at least in part on the requested configuration information indicated in the assistance information and/or the configuration information associated with the second parent node 710b indicated in the assistance information, the first parent node 710a (e.g., SN) may select configuration information for communication between the wireless node 705 and the first parent node 710a that reduces or avoids interference to simultaneous communication between the wireless node and the second parent node 710b (e.g., MN).

For each parent node (e.g., first parent node 710a and second parent node 710 b), there may be periodic resources (e.g., in downlink and uplink) associated with periodic and/or beam sweep communications, such as SSB, CSI-RS, random Access Channel (RACH) communications, scheduling requests, and/or System Information Block (SIB) type 1 (SIB 1) transmissions. In some aspects, in the case of a dual connection, the first parent node 710a may be provided with a resource configuration for periodic and/or beam sweep communications associated with the second parent node 710b, and the second parent node 710b may be provided with a resource configuration for periodic and/or beam sweep communications associated with the first parent node 710 a. In this case, each parent node may avoid scheduling communications that may interfere with periodic and/or beam sweep communications associated with another parent node. However, in some cases, wireless node 705 may not use all of the configuration resources for periodic and/or beam sweep communications associated with one or both of parent nodes 710a and 710 b. For example, configuration resources may be associated with a particular beam direction, and at a given time, only a small number of communications in the beam direction may be related to communications between the wireless node 705 and the parent node. In situations where wireless node 705 is stationary (e.g., a stationary IAB node) and/or slow moving, a large subset of resources configured for periodic and/or beam sweep communications associated with one or both of parent nodes 710a and 710b may not be used by wireless node 705 for long periods of time.

In some aspects, the wireless node 705 may transmit assistance information to the first parent node 710a, including an indication of resources utilized by the wireless node 705 for a plurality of periodic and/or beam sweep communications associated with the second parent node 710 b. For example, the indication may indicate to the first parent node 710a which of the configuration resources for the plurality of periodic and/or beam sweep communications associated with the second parent node 710b are underutilized by the wireless node 705. The availability of this information at the first parent node 710a may enable the first parent node 710a to schedule communications with the wireless node 705 with increased flexibility and efficiency. For example, based at least in part on an indication of utilization of resources configured for multiple periodic and/or beam sweep communications associated with the second parent node 710b, the first parent node 710a may schedule communications with the wireless node 705 that effectively utilize resources that overlap with configuration resources (e.g., in the time domain) that are underutilized by the wireless node 705.

In some aspects, wireless node 705 may send a respective utilization indication to first parent node 710a for each resource configured for a plurality of periodic or beam sweep communications associated with second parent node 710 b. In some aspects, wireless node 705 may send an indication to first parent node 710a identifying one or more underutilized resources of a plurality of periodic or beam sweep communications configured to be associated with second parent node 710 b. For example, the wireless node 705 may transmit an indication of utilization of SSB resources, CSI-RS resources, scheduling Request (SR) resources, RACH resources, SIB1 search space resources, and/or any other periodic and/or beam sweep communications associated with the second parent node 710 b. In some aspects, the transmission of the indication of utilization may be triggered dynamically. For example, transmission of an indication of utilization may be triggered based at least in part on a change to the Tx and/or Rx beams of the association/configuration of wireless node 705 (e.g., for communication with second parent node 710 b). In some aspects, the transmission of the indication of utilization may be semi-statically configured (e.g., in an RRC configuration).

In some aspects, the utilization metrics may be used to determine an indication of utilization of the resource. For example, the utilization metric may be a metric indicating how frequently resources are used for communication by wireless node 705 with second parent node 710 b. In some aspects, the wireless node 705 (or the second parent node 710 b) may measure the utilization of each resource (e.g., the number of times the resource is used by the wireless node 705) over a time window. The utilization indication may be based at least in part on a comparison of utilization of the resource measured over a time window to a threshold. For example, the utilization indication may indicate the utilization level based at least in part on determining whether utilization measured over a time window meets a threshold. In some aspects, the utilization indication for each resource may be determined according to a utilization measurement configuration specifying a time window, a threshold, and/or a period for measuring utilization.

In some aspects, because the first parent node 710a may be provided with information regarding the overall periodicity and/or beam sweep resources (e.g., SSB, RACH, SR and/or CSI-RS resources) configured for the second parent node 710b, the indication of utilization may identify the resources for which the indication of utilization is provided using respective indexes associated with the resources (e.g., SSB index, RACH Occasion (RO) index, SR index, and/or CSI-RS index). For example, for each resource, the indication may include an indication of a respective index associated with the resource and a respective utilization indication for the resource.

In some aspects, the wireless node 705 may also send an indication to the second parent node 710b of the utilization of resources configured for multiple periodic and/or beam sweep communications associated with the first parent node 710 a.

As shown in fig. 7 and further by reference numeral 730, in some aspects, a first parent node 710a may send assistance information to a first CU 715a and/or a second parent node 710b regarding simultaneous communication of wireless node 705 with parent nodes 710a and 710 b. In some aspects, as described in more detail below in connection with fig. 8, the assistance information sent by the first parent node 710a may include a recommended configuration (or restricted configuration) for communication between the wireless node 705 and the second parent node 710 b. For example, the first parent node 710a may determine a recommended configuration for communicating between the wireless node 705 and the second parent node 710b based at least in part on the assistance information received from the wireless node 705. In some aspects, first parent node 710a may send auxiliary information including the recommended configuration to first CU 715 a. In this case, the first CU 715a may transmit auxiliary information including the recommended configuration to the second CU 715b through an interface between the first CU 715a and the second CU 715b, and the second CU 715b may provide the auxiliary information including the recommended configuration to the second parent node 710 b. In some aspects, the first parent node 710a may send assistance information including the recommended configuration (e.g., via over-the-air (OTA) signaling, side-link communications, communications over the Uu interface in the case of a multi-hop IAB, or communications over the inter-DU interface) directly to the second parent node 710 b. In some aspects, the first parent node 710a may send the recommended configuration to the wireless node 705. In this case, wireless node 705 may forward the recommended configuration to second parent node 710b (e.g., in the auxiliary information sent to second parent node 710 b) and/or determine auxiliary information to send to second parent node 710b based at least in part on the recommended configuration.

In some aspects, the first parent node 710a may transmit assistance information including an indication of utilization of resources configured for a plurality of periodic and/or beam sweep communications associated with the first parent node 710a by the wireless node 705. In some aspects, instead of or in addition to wireless node 705, first parent node 710a may monitor for utilization of configuration resources by wireless node 705 for periodic and/or beam sweep communications associated with first parent node 710a, and may send an indication of the utilization of configuration resources. For example, the first parent node 710a may measure and indicate the utilization similarly as described above. In some aspects, first parent node 710a may send an indication to first CU 715a of utilization (e.g., for a resource associated with first parent node 710 a). In this case, the first CU 715a may send an indication of utilization to the second CU 715b (e.g., through an interface between the first CU 715a and the second CU 715 b), and the second CU 715b may provide an indication of utilization of configuration resources for periodic and/or beam sweep communications associated with the first parent node 710a to the second parent node 710 b. In some aspects, the first parent node 710a may send the utilization indication directly to the second parent node 710b (e.g., via OTA signaling, side-link communications, communications over the Uu interface in the case of a multi-hop IAB, or communications over the inter-DU interface).

Additionally or alternatively, second parent node 710b may send assistance information to second CU 715b and/or first parent node 710a relating to simultaneous communication of wireless node 705 with parent nodes 710a and 710 b. In some aspects, the assistance information sent by the second parent node 710b may include a recommended configuration (or restricted configuration) for communication between the wireless node 705 and the first parent node 710 a. In some aspects, second parent node 710b may send auxiliary information including the recommended configuration to second CU 715 b. In this case, the second CU 715b may transmit auxiliary information including the recommended configuration to the first CU 715a, and the first CU 715a may provide the auxiliary information including the recommended configuration to the first parent node 710 a. In some aspects, the second parent node 710b may send assistance information including the recommended configuration directly to the first parent node 710a (e.g., via OTA signaling, side-link communications, communications over the Uu interface in the case of a multi-hop IAB, or communications over the inter-DU interface). In some aspects, the second parent node 710b may send the recommended configuration to the wireless node 705. In this case, wireless node 705 may forward the recommended configuration to first parent node 710a (e.g., in the assistance information sent to first parent node 710 a) and/or determine the assistance information to send to first parent node 710a based at least in part on the recommended configuration.

In some aspects, the second parent node 710b may transmit assistance information including an indication of utilization of resources configured for a plurality of periodic and/or beam sweep communications associated with the second parent node 710b by the wireless node 705. In some aspects, the second parent node 710b may monitor for utilization of configuration resources by the wireless node 705 for periodic and/or beam sweep communications associated with the second parent node 710b, and may send an indication of the utilization of the configuration resources, in lieu of, or in addition to, the wireless node 705. For example, the second parent node 710b may measure and indicate the utilization similarly as described above. In some aspects, second parent node 710b may send an indication to second CU 715b of the utilization of the pair (e.g., for the resource associated with second parent node 710 b). In this case, second CU 715b may send an indication of utilization to first CU 715a, and first CU 715a may provide an indication to first parent node 710a of utilization of configuration resources for periodic and/or beam sweep communications associated with second parent node 710 b.

As shown in fig. 7 and further by reference numeral 735, the first parent node 710a and/or the second parent node 710b may transmit configuration information and/or scheduling information to the wireless node 705. In some aspects, the first parent node 710a may send configuration information to the wireless node 705 that configures communications between the wireless node 705 and the first parent node 710 a. For example, the configuration information may configure communications between the wireless node 705 and the first parent node 710a for a set of resources (e.g., time and/or frequency resources), such as resources configured for simultaneous communications by the wireless node 705 with the parent nodes 710a and 710 b. In some aspects, the first parent node 710a may send scheduling information to the wireless node 705 to schedule one or more communications (e.g., downlink communications and/or uplink communications) between the wireless node 705 and the first parent node 710 a.

In some aspects, first parent node 710a may determine configuration information and/or scheduling information based at least in part on assistance information received from wireless node 705, first CU 715a, and/or second parent node 710 b. In some aspects, based at least in part on the assistance information received from wireless node 705 (and/or the recommended configuration determined by second parent node 710 b), first parent node 710a may determine configuration information comprising at least one of: tx and/or Rx beams for the wireless node 705 to use for communication with the first parent node 710 a; guard symbols and/or guard bands for communication between the wireless node 705 and the first parent node 710 a; uplink Tx power for one or more uplink communications to the first parent node 710 a; downlink Tx power for one or more downlink communications from the first parent node 710 a; uplink Tx timing for one or more uplink communications to the first parent node 710 a; a downlink reference signal configuration for a downlink reference signal from the first parent node 710 a; and/or an uplink reference signal configuration for an uplink reference signal sent to the first parent node 710 a. For example, the first parent node 710a may determine configuration information based at least in part on the requested configuration information indicated in the auxiliary information and/or the configuration information associated with the second parent node 710b indicated in the auxiliary information. In some aspects, the first parent node 710a may determine configuration information and/or scheduling information based at least in part on an indication of utilization of configuration resources for periodic and/or beam sweep communications associated with the second parent node 710b (e.g., received from the wireless node 705, the first CU 715a, or the second parent node 710 b).

In some aspects, the second parent node 710b may send configuration information to the wireless node 705 for configuring communications between the wireless node 705 and the second parent node 710 b. For example, the configuration information may configure communications between the wireless node 705 and the second parent node 710b for a set of resources (e.g., time and/or frequency resources), such as resources configured for simultaneous communications by the wireless node 705 with the parent nodes 710a and 710 b. In some aspects, the second parent node 710b may send scheduling information to the wireless node 705 to schedule one or more communications (e.g., downlink communications and/or uplink communications) between the wireless node 705 and the second parent node 710 b.

In some aspects, first parent node 710a may determine configuration information and/or scheduling information based at least in part on assistance information received from wireless node 705, first CU 715a, and/or second parent node 710 b. In some aspects, the first parent node 710a may determine configuration information based at least in part on the assistance information received from the wireless node 705 (and/or the recommended configuration determined by the first parent node 710 a), similar to that described above in connection with the first parent node 710 a. In some aspects, second parent node 710b may determine configuration information and/or scheduling information based at least in part on an indication of utilization of configuration resources for periodic and/or beam sweep communications associated with first parent node 710a (e.g., received from wireless node 705, second CU 715b, or first parent node 710 a).

As shown in fig. 7 and further illustrated by reference numeral 740, wireless node 705 may communicate with a first parent node 710a and a second parent node 710 b. In some aspects, wireless node 705 may communicate with first parent node 710a and/or second parent node 710b based at least in part on assistance information sent to first parent node 710a (e.g., from wireless node 705, first CU 715a, and/or second parent node 710 b) and/or to second parent node 710b (e.g., from wireless node 705, second CU 715b, and/or first parent node 710 a). For example, wireless node 705 may communicate with first parent node 710a and/or second parent node 710b based at least in part on configuration information and/or scheduling information determined using the assistance information.

In some aspects, wireless node 705 may communicate with both first parent node 710a and second parent node 710b based at least in part on configuration information determined using the assistance information. This may result in efficient simultaneous communication with reduced interference. In some aspects, simultaneous communication may include simultaneous uplink transmission to one parent node (e.g., the first parent node 710a or the second parent node 710 b) and downlink reception from another parent node (e.g., the other of the second parent node 710b or the first parent node 710 a). In some aspects, the simultaneous communication may include simultaneous downlink reception from both parent nodes 710a and 710 b. In some aspects, the simultaneous communication may include simultaneous uplink transmissions to both parent nodes 710a and 710 b.

As noted above, fig. 7 is provided as an example. Other examples may differ from the example described with respect to fig. 7.

Fig. 8 is a diagram illustrating an example 800 associated with efficient simultaneous communication of dual-connectivity wireless nodes in accordance with the present disclosure. As shown in fig. 8, example 800 includes communication between wireless node 705, first parent node 710a, second parent node 710b, first CU 715a, and second CU 715 b. Wireless node 705 may be dual-connected to a first parent node 710a and a second parent node 710b. In some aspects, the wireless node 705 may be or may be included in an IAB node (e.g., IAB node 605 and/or IAB node 410). In some aspects, the wireless node may be an IAB-MT. In some aspects, wireless node 705 may be a UE (e.g., UE 120). The first parent node 710a and the second parent node 710b may be parent nodes for the wireless node 705. In some aspects, the first parent node 710a and the second parent node 710b may be or may be included in an IAB donor (e.g., IAB donor 405), an IAB node (e.g., IAB node 410), or a combination thereof. In some aspects, the first parent node 710a may be a first parent DU (e.g., a DU of an IAB donor or IAB-DU) and the second parent node 710b may be a second parent DU (e.g., a DU of an IAB donor or IAB-DU). In some aspects, the first parent node 710a may be a MN and the second parent node 710b may be a SN. In some aspects, the second parent node 710b may be a MN and the first parent node 710a may be a SN.

As shown in fig. 8, and with reference numeral 805, a first parent node 710a may determine a recommended configuration for communication between a wireless node 705 and a second parent node 710 b. In some aspects, the recommended configuration may include recommended configuration information to be used for communication between the first parent node 710a and the second parent node 710 b. For example, the recommended configuration may include an indication of at least one of: an indication of a recommended Tx beam and/or a recommended Rx beam for the wireless node 705 to use for communication with the second parent node 710 b; an indication of at least one of a recommended guard symbol or a recommended guard band for communication between the wireless node 705 and the second parent node 710 b; an indication of recommended uplink Tx power for the wireless node 705 to use for one or more uplink communications to the second parent node 710 b; an indication of recommended uplink Tx timing for one or more uplink communications to the second parent node 710 b; an indication of a recommended downlink reference signal configuration for the downlink reference signal from the second parent node 710 b; an indication of a recommended uplink reference signal configuration for uplink reference signals sent to the second parent node 710 b; an indication of recommended downlink Tx power for use by the second parent node 710b for one or more downlink communications to the wireless node 705;

In some aspects, the first parent node 710a may determine a recommended configuration for communicating between the wireless node 705 and the second parent node 710b based at least in part on the configuration the wireless node 705 uses to communicate with the first parent node 710 a. For example, the first parent node 710a may select recommended configuration information in a recommended configuration to reduce (e.g., minimize) interference from simultaneous communications between the wireless node 705 and the second parent node 710b to communications between the wireless node 705 and the first parent node 710 a. In some aspects, the first parent node 710a may determine a recommended configuration for communicating between the wireless node 705 and the second parent node 710b based at least in part on assistance information received from the wireless node 705 (such as assistance information described above in connection with fig. 7). In some aspects, the first parent node 710a may determine a recommended configuration for communication between the wireless node 705 and the second parent node 710b without receiving assistance information and/or prior to receiving assistance information.

In some aspects, the recommended configuration may include one or more restrictions on the configuration for communication between the wireless node 705 and the second parent node 710 b. For example, where the first parent node 710a is associated with a higher priority than the second parent node 710b, such as where the first parent node 710a is a MN and the second parent node 710b is a SN, the first parent node 710a may limit the configuration for communication between the wireless node 705 and the second parent node 710b to conform to one or more restrictions on the configuration information. In some aspects, the recommended configuration may include one or more recommendations for configuration information (whether the second parent node 710b may choose to follow) and one or more restrictions on configuration information (the second parent node is restricted from following).

In some aspects, the recommended configuration for communication between the wireless node 705 and the second parent node 710b may be associated with resources (e.g., time and/or frequency resources) configured for simultaneous communication by the wireless node 705 with the first parent node 710a and the second parent node 710 b. For example, the recommended configuration may indicate recommended configuration information (and/or restrictions on configuration information) to be used for resources configured for simultaneous communication with parent nodes 710a and 710b (e.g., resources wireless node 705 is configured to support simultaneous communication). In some aspects, a recommended configuration for communicating between the wireless node 705 and the second parent node 710b may be associated with a set of time and/or frequency resources (e.g., the set of time and/or frequency resources indicated in the recommended configuration). In some aspects, the recommended configuration for communication between the wireless node 705 and the second parent node 710b may be associated with one or more resource types (flexible resources, downlink resources, and/or uplink resources) and/or one or more types of signals or channels (e.g., PDSCH, PDCCH, PUSCH, PUCCH, etc.).

As shown in fig. 8 and further by reference numeral 810, in some aspects, a first parent node 710a may send a recommended configuration to the wireless node 705 for communication between the wireless node 705 and a second parent node 710 b. The wireless node 705 may receive a recommendation configuration for communication between the wireless node 705 and the second parent node 710b, and the wireless node 705 may send the recommendation configuration and/or assistance information to the second parent node 710b based at least in part on the recommendation configuration. In some aspects, the wireless node 705 may send a recommended configuration to the second parent node 710 b. For example, the recommended configuration may be included in the assistance information sent from the wireless node 705 to the second parent node 710 b. In some aspects, the wireless node 705 may determine the assistance information based at least in part on a recommended configuration for communication between the wireless node 705 and the second parent node 710 b. For example, the wireless node 705 may select a subset of the recommended configuration information included in the recommended configuration, and the wireless node 705 may transmit side information indicating the selected subset of the recommended configuration information to the second parent node 710 b.

As shown in fig. 8 and further by reference numeral 815, in some aspects, first parent node 710a may send a recommended configuration to first CU 715a for communication between wireless node 705 and second parent node 710 b. The first CU 715a may send a recommended configuration to the second CU 715b via an interface between the first CU 715a and the second CU 715 b. Second CU 715b may provide/send a recommended configuration to second parent node 710 b.

As shown in fig. 8 and further by reference numeral 820, in some aspects, a first parent node 710a may send a recommended configuration for communication between the wireless node 705 and a second parent node 710b directly to a second parent node 710 b. For example, the first parent node 710a may send the recommended configuration to the second parent node 710b via OTA signaling, side-link communication, communication over the Uu interface (e.g., in the case of a multi-hop IAB), or communication over the inter-DU interface.

As shown in fig. 8 and further illustrated by reference numeral 825, the second parent node 710b may send the wireless node 705 a configuration for communication between the wireless node 705 and the second parent node 710 b. In some aspects, the second parent node 710b may send configuration information to the wireless node 705 for configuring communications between the wireless node 705 and the second parent node 710 b. For example, the configuration information may configure communications between the wireless node 705 and the second parent node 710b for a set of resources (e.g., time and/or frequency resources), such as resources configured for simultaneous communications by the wireless node 705 with the parent nodes 710a and 710 b. In some aspects, the second parent node 710b may receive a recommended configuration (e.g., from the first parent node 710a, the second CU 715b, or the wireless node 705) for communicating between the wireless node 705 and the second parent node 710b, and the second parent node 710b may determine a configuration for communicating between the wireless node 705 and the second parent node 710b based at least in part on the recommended configuration. For example, the second parent node 710b may select all or a subset of the recommended configuration information indicated in the recommended configuration to be included in the configuration sent to the wireless node 705. In some aspects, where the recommended configuration includes one or more restrictions on the configuration information, the second parent node 710b may select the configuration information that meets the one or more restrictions.

As shown in fig. 8 and further by reference numeral 830, wireless node 705 may communicate with a first parent node 710a and a second parent node 710 b. In some aspects, wireless node 705 may communicate with first parent node 710a and/or second parent node 710b based at least in part on a recommended configuration determined by first parent node 710 a. For example, the wireless node 705 may communicate with the second parent node 710b based at least in part on a configuration determined from the recommended configuration. In some aspects, wireless node 705 may communicate with second parent node 710b while communicating with first parent node 710a using a configuration determined based at least in part on the recommended configuration. This may result in efficient simultaneous communication with reduced interference. In some aspects, simultaneous communication may include simultaneous uplink transmission to one parent node (e.g., the first parent node 710a or the second parent node 710 b) and downlink reception from another parent node (e.g., the other of the second parent node 710b or the first parent node 710 a). In some aspects, the simultaneous communication may include simultaneous downlink reception from both parent nodes 710a and 710 b. In some aspects, the simultaneous communication may include simultaneous uplink transmissions to both parent nodes 710a and 710 b.

As noted above, fig. 8 is provided as an example. Other examples may differ from the example described with respect to fig. 8.

Fig. 9 is a schematic diagram illustrating an example process 900 performed, for example, by a wireless node, in accordance with the present disclosure. The example process 900 is an example in which a wireless node (e.g., the wireless node 705) performs operations associated with efficient simultaneous communication of dual-connectivity wireless nodes.

As shown in fig. 9, in some aspects, process 900 may include: auxiliary information relating to simultaneous communication of the wireless node with the first parent node and the second parent node is sent to at least one of the first parent node or the second parent node (block 910). For example, as described above, a wireless node (e.g., using communication manager 1250 and/or transmission component 1204 depicted in fig. 12) can transmit assistance information to at least one of a first parent node or a second parent node related to simultaneous communication of the wireless node with the first parent node and the second parent node.

As further shown in fig. 9, in some aspects, process 900 may include: communication is performed with at least one of the first parent node or the second parent node based at least in part on the assistance information (block 920). For example, as described above, a wireless node (e.g., using communication manager 1250, receiving component 1202, and/or transmitting component 1204 depicted in fig. 12) can communicate with at least one of a first parent node or a second parent node based at least in part on the assistance information.

Process 900 may include additional aspects, such as any single aspect or any combination of aspects described below and/or in conjunction with one or more other processes described elsewhere herein.

In a first aspect, the process 900 includes sending an indication to at least one of the first parent node or the second parent node of the wireless node's capabilities for simultaneous communication with the first parent node and the second parent node.

In a second aspect, alone or in combination with the first aspect, the indication comprises: an indication of the wireless node's ability to transmit and receive simultaneously on multiple serving cells in a frequency band.

In a third aspect, alone or in combination with one or more of the first and second aspects, sending the assistance information comprises: an indication of at least one of a requested transmit beam or a requested receive beam for communication with the first parent node is sent to the first parent node.

In a fourth aspect, alone or in combination with one or more of the first to third aspects, sending the assistance information comprises: an indication is sent to the first parent node of at least one of a transmit beam or a receive beam that is not preferred for communication with the first parent node.

In a fifth aspect, alone or in combination with one or more of the first to fourth aspects, sending the assistance information comprises: an indication is sent to the first parent node of at least one of one or more transmit beams or one or more receive beams that the wireless node is configured to communicate with the second parent node.

In a sixth aspect, alone or in combination with one or more of the first to fifth aspects, sending the assistance information comprises: an indication of at least one of the requested guard symbol or the requested guard band is sent to the first parent node.

In a seventh aspect, alone or in combination with one or more of the first to sixth aspects, sending the assistance information comprises: an indication of at least one of a guard symbol or guard band provided by the second parent node is sent to the first parent node.

In an eighth aspect, alone or in combination with one or more of the first to seventh aspects, sending the assistance information comprises: an indication of at least one of a requested downlink transmit power adjustment for the first parent node or a requested uplink transmit power for uplink communication to the first parent node is sent to the first parent node.

In a ninth aspect, alone or in combination with one or more of the first to eighth aspects, sending the assistance information comprises: sending an indication to the first parent node regarding at least one of: downlink received power for downlink communication from the second parent node, uplink transmit power for uplink communication to the second parent node, or downlink transmit power adjustment for the second parent node.

In a tenth aspect, alone or in combination with one or more of the first to ninth aspects, sending the assistance information comprises: an indication of at least one of a requested downlink transmit timing adjustment for the first parent node or a requested uplink transmit timing for uplink communications to the first parent node is sent to the first parent node.

In an eleventh aspect, alone or in combination with one or more of the first to tenth aspects, sending the assistance information comprises: an indication of at least one of a downlink receive timing for downlink communications from the second parent node or an uplink transmit timing for uplink communications to the second parent node is sent to the first parent node.

In a twelfth aspect, alone or in combination with one or more of the first to eleventh aspects, sending the assistance information comprises: an indication of at least one of a requested downlink reference signal configuration or a requested uplink reference signal configuration associated with the first parent node is sent to the first parent node.

In a thirteenth aspect, alone or in combination with one or more of the first to twelfth aspects, sending the assistance information comprises: an indication of at least one of a downlink reference signal configuration or an uplink reference signal configuration associated with the second parent node is sent to the first parent node.

In a fourteenth aspect, alone or in combination with one or more of the first through thirteenth aspects, the auxiliary information is associated with a resource configured for simultaneous communication with the first parent node and the second parent node.

In a fifteenth aspect, the assistance information is associated with a set of time and frequency resources, alone or in combination with one or more of the first to fourteenth aspects.

In a sixteenth aspect, alone or in combination with one or more of the first to fifteenth aspects, sending the assistance information comprises: auxiliary information is sent to a first parent node, wherein the first parent node is an auxiliary node and the second parent node is a master node.

In a seventeenth aspect, alone or in combination with one or more of the first to sixteenth aspects, the assistance information is associated with at least one of a resource type, a signal type, or a channel type.

In an eighteenth aspect, alone or in combination with one or more of the first through seventeenth aspects, the process 900 includes: a configuration for communicating with the first parent node is received from the first parent node based at least in part on sending the assistance information to the first parent node.

In a nineteenth aspect, alone or in combination with one or more of the first through eighteenth aspects, the process 900 includes: a recommended configuration for communicating between the wireless node and the second parent node is received from the first parent node.

In a twentieth aspect, alone or in combination with one or more of the first through nineteenth aspects, transmitting the assistance information includes transmitting the assistance information to the second parent node, and the assistance information is based at least in part on a recommended configuration for communicating between the wireless node and the second parent node.

In a twenty-first aspect, alone or in combination with one or more of the first to twentieth aspects, sending the assistance information comprises: a recommended configuration for communication between the wireless node and the second parent node is sent to the second parent node.

In a twenty-second aspect, alone or in combination with one or more of the first to twenty-first aspects, sending the assistance information comprises: the method further includes transmitting the assistance information to the first parent node, and receiving a recommended configuration from the first parent node for communication between the wireless node and the second parent node based at least in part on transmitting the assistance information to the first parent node.

In a twenty-third aspect, alone or in combination with one or more of the first through twenty-second aspects, the process 900 includes: a recommended configuration for communication between the wireless node and the second parent node is sent to the second parent node.

In a twenty-fourth aspect, alone or in combination with one or more of the first to twenty-third aspects, a recommended configuration for communication between a wireless node and a second parent node comprises at least one of: an indication of at least one of a transmit beam or a receive beam for use by the wireless node in communicating with the second parent node, an indication of at least one of a guard symbol or a guard band for use in communicating with the second parent node, an indication of uplink transmit power for uplink communication to the second parent node, an indication of uplink transmit timing for uplink communication to the second parent node, an indication of at least one of a downlink reference signal configuration or an uplink reference signal configuration, or an indication of downlink transmit power for the second parent node.

In a twenty-fifth aspect, alone or in combination with one or more of the first through twenty-fourth aspects, the recommended configuration for communication between the wireless node and the second parent node is associated with a resource configured for simultaneous communication with the first parent node and the second parent node.

In a twenty-sixth aspect, alone or in combination with one or more of the first through twenty-fifth aspects, the recommended configuration for communication between the wireless node and the second parent node is associated with a set of time and frequency resources.

In a twenty-seventh aspect, alone or in combination with one or more of the first through twenty-sixth aspects, the recommended configuration for communication between the wireless node and the second parent node is associated with at least one of a resource type, a signal type, or a channel type.

In a twenty-eighth aspect, alone or in combination with one or more of the first to twenty-seventh aspects, transmitting the assistance information comprises: an indication is sent to the first parent node regarding utilization of resources by a wireless node configured for a plurality of periodic or beam sweep communications associated with the second parent node.

In a twenty-ninth aspect, alone or in combination with one or more of the first to twenty-eighth aspects, sending the indication of the utilization of the resources configured for multiple periodic or beam sweep communications associated with the second parent node comprises: a respective utilization indication is sent for each of a plurality of periodic or beam sweep communication resources configured for association with the second parent node.

In a thirty-first aspect, alone or in combination with one or more of the first through twenty-ninth aspects, the respective utilization indication for each resource is based at least in part on a comparison of utilization of the resource measured over a time window to a threshold.

In a thirty-first aspect, alone or in combination with one or more of the first through thirty-first aspects, sending the respective utilization indication for each of the resources configured for the plurality of periodic or beam sweep communications associated with the second parent node comprises: for each of the resources configured for the plurality of periodic or beam sweep communications associated with the second parent node, sending an indication of a respective index associated with the resource, and a respective utilization indication for the resource.

In a thirty-second aspect, alone or in combination with one or more of the first through thirty-first aspects, the resources configured for the plurality of periodic or beam sweep communications associated with the second parent node comprise at least one of: SSB resources, CSI-RS resources, SR resources, RACH resources, or SIB1 search space resources.

In a thirty-third aspect, alone or in combination with one or more of the first through thirty-second aspects, communicating with at least one of the first parent node or the second parent node comprises: the first parent node and the second parent node are concurrently in communication based at least in part on the assistance information.

In a thirty-fourth aspect, alone or in combination with one or more of the sixteenth to thirty-third aspects, the wireless node is an IAB-MT.

In a thirty-fifth aspect, the wireless node is a UE, alone or in combination with one or more of the first through thirty-fourth aspects.

While fig. 9 shows example blocks of process 900, in some aspects process 900 may include additional blocks, fewer blocks, different blocks, or blocks arranged in a different manner than the blocks depicted in fig. 9. Additionally or alternatively, two or more of the blocks of process 900 may be performed in parallel.

Fig. 10 is a diagram illustrating an example process 1000 performed, for example, by a first parent node, in accordance with the present disclosure. Example process 1000 is an example in which a first parent node (e.g., first parent node 110 a) performs operations associated with efficient simultaneous communication of dual-connectivity wireless nodes.

As shown in fig. 10, in some aspects, process 1000 may include: assistance information relating to simultaneous communication of a wireless node with a first parent node and a second parent node is received (block 1010). For example, as described above, a first parent node (e.g., using communication manager 1350 and/or receiving component 1302 depicted in fig. 13) may receive assistance information related to simultaneous communication of a wireless node with the first parent node and a second parent node.

As further shown in fig. 10, in some aspects, process 1000 may include: communication is performed with a wireless node based at least in part on the assistance information (block 1020). For example, as described above, a first parent node (e.g., using communication manager 1350, receiving component 1302, and/or transmitting component 1304 depicted in fig. 13) can communicate with a wireless node based at least in part on the assistance information.

Process 1000 may include additional aspects, such as any single aspect or any combination of aspects described below and/or in conjunction with one or more other processes described elsewhere herein.

In a first aspect, the process 1000 includes: the method includes receiving, from a wireless node, an indication of a capability of the wireless node to communicate simultaneously with a first parent node and a second parent node, and sending, to the second parent node, the indication of the capability of the wireless node to communicate simultaneously via an interface between a first central unit associated with the first parent node and a second central unit associated with the second parent node.

In a third aspect, alone or in combination with one or more of the first and second aspects, receiving the assistance information comprises: the assistance information is received from at least one of the wireless node, the second parent node, or a central unit associated with the first parent node.

In a fourth aspect, alone or in combination with one or more of the first to third aspects, receiving the assistance information comprises: an indication is received from a wireless node of at least one of a requested transmit beam or a requested receive beam for communication with the first parent node.

In a fifth aspect, alone or in combination with one or more of the first to fourth aspects, receiving the assistance information comprises: an indication is received from the wireless node that at least one of a transmit beam or a receive beam for communication with the first parent node is not preferred.

In a sixth aspect, alone or in combination with one or more of the first to fifth aspects, receiving the assistance information comprises: an indication is received from the wireless node of at least one of one or more transmit beams or one or more receive beams the wireless node is configured to communicate with a second parent node.

In a seventh aspect, alone or in combination with one or more of the first to sixth aspects, receiving the assistance information comprises: an indication of at least one of the requested guard symbol or the requested guard band is received from the wireless node.

In an eighth aspect, alone or in combination with one or more of the first to seventh aspects, receiving the assistance information comprises: an indication is received from the wireless node regarding at least one of a guard symbol or guard band provided by the second parent node.

In a ninth aspect, alone or in combination with one or more of the first to eighth aspects, receiving the assistance information comprises: an indication of at least one of a requested downlink transmit power adjustment for the first parent node or a requested uplink transmit power for uplink communications to the first parent node is received from the wireless node.

In a tenth aspect, alone or in combination with one or more of the first to ninth aspects, receiving the assistance information comprises: receiving, from the wireless node, an indication of at least one of: downlink received power for downlink communication from the second parent node, uplink transmit power for uplink communication to the second parent node, or downlink transmit power adjustment for the second parent node.

In an eleventh aspect, alone or in combination with one or more of the first to tenth aspects, receiving the assistance information comprises: an indication of at least one of a requested downlink transmit timing adjustment for the first parent node or a requested uplink transmit timing for uplink communications to the first parent node is received from the wireless node.

In a twelfth aspect, alone or in combination with one or more of the first to eleventh aspects, receiving the assistance information comprises: an indication is received from the wireless node of at least one of a downlink receive timing for downlink communications from the second parent node or an uplink transmit timing for uplink communications to the second parent node.

In a thirteenth aspect, alone or in combination with one or more of the first to twelfth aspects, receiving the assistance information comprises: an indication of at least one of a requested downlink reference signal configuration or a requested uplink reference signal configuration associated with a first parent node is received from a wireless node.

In a fourteenth aspect, alone or in combination with one or more of the first to thirteenth aspects, receiving the assistance information comprises: an indication is received from the wireless node regarding at least one of a downlink reference signal configuration or an uplink reference signal configuration associated with the second parent node.

In a fifteenth aspect, alone or in combination with one or more of the first through fourteenth aspects, the auxiliary information is associated with a resource configured for simultaneous communication with the first parent node and the second parent node.

In a sixteenth aspect, alone or in combination with one or more of the first to fifteenth aspects, the assistance information is associated with a set of time and frequency resources.

In an eighteenth aspect, alone or in combination with one or more of the first to seventeenth aspects, receiving the assistance information comprises: a recommended configuration for communicating between the wireless node and the first parent node is received from at least one of the second parent node, a central unit associated with the first parent node, or the wireless node.

In a nineteenth aspect, alone or in combination with one or more of the first through eighteenth aspects, the process 1000 comprises: the recommended configuration for communicating between the wireless node and the second parent node is sent to at least one of the wireless node, the second parent node, or a central unit associated with the first parent node based at least in part on receiving the assistance information.

In a twentieth aspect, alone or in combination with one or more of the first to nineteenth aspects, receiving the assistance information comprises: an indication is received from at least one of the wireless node, the second parent node, or a central unit associated with the first parent node regarding utilization of resources by the wireless node that are configured for a plurality of periodic or beam sweep communications associated with the second parent node.

In a twenty-first aspect, alone or in combination with one or more of the first through twentieth aspects, receiving an indication of utilization of resources configured for a plurality of periodic or beam sweep communications associated with a second parent node comprises: a respective utilization indication is received for each of a plurality of periodic or beam sweep communication resources configured for association with a second parent node.

In a twenty-second aspect, alone or in combination with one or more of the first to twenty-first aspects, receiving a respective utilization indication for each of a plurality of periodic or beam sweep communication resources configured for association with a second parent node comprises: for each resource of a plurality of periodic or beam sweep communications configured for association with a second parent node, an indication of a respective index associated with the resource and a respective utilization indication for the resource is received.

In a twenty-third aspect, alone or in combination with one or more of the first through twenty-second aspects, the resources configured for the plurality of periodic or beam sweep communications associated with the second parent node comprise at least one of: SSB resources, CSI-RS resources, SR resources, RACH resources, or SIB1 search space resources.

In a twenty-fourth aspect, alone or in combination with one or more of the first through twenty-third aspects, the process 1000 comprises: a configuration for communicating between the wireless node and the first parent node is transmitted to the wireless node, wherein the configuration is based at least in part on the assistance information.

In a twenty-fifth aspect, alone or in combination with one or more of the first through twenty-fourth aspects, communicating with the wireless node based at least in part on the assistance information comprises: the wireless node is in communication with the second parent node based at least in part on the configuration.

In a twenty-sixth aspect, alone or in combination with one or more of the first through twenty-fifth aspects, the wireless node is an IAB-MT.

In a twenty-seventh aspect, alone or in combination with one or more of the first through twenty-sixth aspects, the wireless node is a UE.

While fig. 10 shows example blocks of process 1000, in some aspects process 1000 may include additional blocks, fewer blocks, different blocks, or blocks arranged in a different manner than the blocks depicted in fig. 10. Additionally or alternatively, two or more of the blocks of process 1000 may be performed in parallel.

Fig. 11 is a diagram illustrating an example process 1100 performed, for example, by a first parent node, in accordance with the present disclosure. The example process 1100 is an example in which a first parent node (e.g., the first parent node 110 a) performs operations associated with efficient simultaneous communication of dual-connectivity wireless nodes.

As shown in fig. 11, in some aspects, process 1100 may include: auxiliary information relating to simultaneous communication of the wireless node with the first parent node and the second parent node is sent to at least one of the second parent node, the central unit, or the wireless node (block 1110). For example, as described above, a first parent node (e.g., using communication manager 1350 and/or transmitting component 1304 depicted in fig. 13) may transmit assistance information to at least one of a second parent node, a central unit, or a wireless node related to the wireless node communicating with the first parent node and the second parent node simultaneously.

As further shown in fig. 11, in some aspects, process 1100 may include: communication is performed with a wireless node based at least in part on the assistance information (block 1120). For example, as described above, a first parent node (e.g., using communication manager 1350, receiving component 1302, and/or transmitting component 1304 depicted in fig. 13) can communicate with a wireless node based at least in part on the assistance information.

Process 1100 may include additional aspects, such as any single aspect or any combination of aspects described below and/or in conjunction with one or more other processes described elsewhere herein.

In a first aspect, transmitting the auxiliary information includes: a recommended configuration for communicating between the wireless node and the second parent node is sent to at least one of the wireless node, the second parent node, or a central unit associated with the first parent node.

In a second aspect, alone or in combination with the first aspect, the recommended configuration for communication between the wireless node and the second parent node comprises at least one of: an indication of at least one of a transmit beam or a receive beam used by the wireless node to communicate with the second parent node, an indication of at least one of a guard symbol or a guard band used to communicate with the second parent node, an indication of uplink transmit power used for uplink communication to the second parent node, an indication of uplink transmit timing used for uplink communication to the second parent node, an indication of at least one of a downlink reference signal configuration or an uplink reference signal configuration, or an indication of downlink transmit power used for the second node.

In a third aspect, alone or in combination with one or more of the first and second aspects, a recommended configuration for communication between a wireless node and a second parent node comprises: one or more restrictions on a configuration for communication between the wireless node and the second parent node.

In a fourth aspect, alone or in combination with one or more of the first to third aspects, the recommended configuration for communication between the wireless node and the second parent node is associated with a resource configured for simultaneous communication of the wireless node with the first parent node and the second parent node.

In a fifth aspect, alone or in combination with one or more of the first through fourth aspects, a recommended configuration for communication between the wireless node and the second parent node is associated with a set of time and frequency resources.

In a sixth aspect, alone or in combination with one or more of the first through fifth aspects, a recommended configuration for communication between the wireless node and the second parent node is associated with at least one of a resource type, a signal type, or a channel type.

In a seventh aspect, alone or in combination with one or more of the first through sixth aspects, communicating with the wireless node based at least in part on the assistance information comprises: a configuration based at least in part on a recommended configuration for communicating between the wireless node and the second parent node is used to communicate with the wireless node and the wireless node communicates with the second parent node simultaneously.

In an eighth aspect, alone or in combination with one or more of the first to seventh aspects, sending the assistance information comprises: an indication of utilization of resources configured for a plurality of periodic or beam sweep communications associated with the first parent node by the wireless node is sent to at least one of the second parent node or a central unit associated with the first parent node.

In a ninth aspect, alone or in combination with one or more of the first to eighth aspects, sending an indication of utilization of resources configured for a plurality of periodic or beam sweep communications associated with the first parent node comprises: a respective utilization indication is sent for each of a plurality of periodic or beam sweep communication resources configured for association with a first parent node.

In a tenth aspect, alone or in combination with one or more of the first to ninth aspects, the respective utilization indication for each resource is based at least in part on a comparison of the measured utilization of that resource over a time window to a threshold.

In an eleventh aspect, alone or in combination with one or more of the first to tenth aspects, sending a respective utilization indication for each of a plurality of periodic or beam sweep communication resources configured for association with a first parent node comprises: for each resource of a plurality of periodic or beam sweep communications configured for association with a first parent node, an indication of a respective index associated with the resource and a respective utilization indication for the resource is sent.

In a twelfth aspect, alone or in combination with one or more of the first through eleventh aspects, the resources configured for the plurality of periodic or beam sweep communications associated with the first parent node comprise at least one of: SSB resources, CSI-RS resources, SR resources, RACH resources, or SIB1 search space resources.

In a thirteenth aspect, alone or in combination with one or more of the first through twelfth aspects, the wireless node is an IAB-MT.

In a fourteenth aspect, alone or in combination with one or more of the first to thirteenth aspects, the wireless node is a UE.

While fig. 11 shows example blocks of the process 1100, in some aspects the process 1100 may include additional blocks, fewer blocks, different blocks, or blocks arranged in a different manner than the blocks depicted in fig. 11. Additionally or alternatively, two or more of the blocks of process 1100 may be performed in parallel.

Fig. 12 is a schematic diagram of an example apparatus 1200 for wireless communication. The apparatus 1200 may be a wireless node, or the wireless node may comprise the apparatus 1200. In some aspects, apparatus 1200 includes a receiving component 1202 and a sending component 1204, where the receiving component 902 and the sending component 904 can communicate with each other (e.g., via one or more buses and/or one or more other components). As shown, apparatus 1200 may communicate with another apparatus 1206 (such as a UE, a base station, or another wireless communication device) using a receiving component 1202 and a transmitting component 1204. As further illustrated, apparatus 1200 can include a communication manager 1250. The communication manager 1250 may include a determination component 1208.

In some aspects, the apparatus 1200 may be configured to perform one or more operations described herein in connection with fig. 7-8. Additionally or alternatively, the apparatus 1200 may be configured to perform one or more processes described herein, such as process 900 of fig. 9, or a combination thereof. In some aspects, the apparatus 1200 and/or one or more components shown in fig. 12 may include one or more components of the wireless node described in connection with fig. 2. Additionally or alternatively, one or more of the components shown in fig. 12 may be implemented within one or more of the components described in connection with fig. 2. Additionally or alternatively, one or more components of the set of components may be at least partially implemented as software stored in memory. For example, a component (or a portion of a component) may be implemented as instructions or code stored in a non-transitory computer-readable medium and executable by a controller or processor to perform functions or operations of the component.

The receiving component 1202 can receive a communication, such as a reference signal, control information, data communication, or a combination thereof, from the apparatus 1206. The receiving component 1202 may provide the received communication to one or more other components of the apparatus 1200. In some aspects, the receiving component 1202 can perform signal processing (such as filtering, amplifying, demodulating, analog-to-digital converting, demultiplexing, deinterleaving, demapping, equalizing, interference cancellation, or decoding, among other examples) on the received communication and can provide the processed signal to one or more other components of the apparatus 1200. In some aspects, the receiving component 1202 can include one or more antennas, modems, demodulators, MIMO detectors, receive processors, controllers/processors, memory, or a combination thereof of a wireless node described in connection with fig. 2.

The transmitting component 1204 can transmit a communication, such as a reference signal, control information, data communication, or a combination thereof, to the device 1206. In some aspects, one or more other components of apparatus 1200 may generate a communication and may provide the generated communication to transmission component 1204 for transmission to apparatus 1206. In some aspects, the transmitting component 1204 can perform signal processing (such as filtering, amplifying, modulating, digital-to-analog converting, multiplexing, interleaving, mapping, or encoding, among other examples) on the generated communication and can transmit the processed signal to the device 1206. In some aspects, the transmit component 1204 may include one or more antennas, modems, modulators, transmit MIMO processors, transmit processors, controllers/processors, memory, or a combination thereof of the wireless node described in connection with fig. 2. In some aspects, the sending component 1204 may be collocated with the receiving component 1202 in a transceiver.

The transmitting component 1204 may transmit assistance information to at least one of the first parent node or the second parent node related to the wireless node communicating with the first parent node and the second parent node simultaneously. The receiving component 1202 and/or the sending component 1204 can communicate with at least one of the first parent node or the second parent node based at least in part on the assistance information. The determining component 1208 may determine the assistance information.

The transmitting component 1204 may transmit an indication to at least one of the first parent node or the second parent node of the capability of the wireless node for simultaneous communication with the first parent node and the second parent node.

The receiving component 1202 may receive a configuration from the first parent node for communicating with the first parent node based at least in part on sending the assistance information to the first parent node.

The receiving component 1202 may receive a recommended configuration from a first parent node for communicating between a wireless node and a second parent node.

The transmitting component 1204 may transmit the recommended configuration for communication between the wireless node and the second parent node to the second parent node.

The transmitting component 1204 may transmit an indication to the first parent node of utilization of resources configured for a plurality of periodic or beam sweep communications associated with the second parent node by the wireless node.

The number and arrangement of components shown in fig. 12 are provided as examples. In practice, there may be additional components, fewer components, different components, or components arranged in a different manner than those shown in fig. 12. Further, two or more components shown in fig. 12 may be implemented within a single component, or a single component shown in fig. 12 may be implemented as multiple distributed components. Additionally or alternatively, one set (one or more) of components shown in fig. 12 may perform one or more functions described as being performed by another set of components shown in fig. 12.

Fig. 13 is a diagram of an example apparatus 1300 for wireless communication. Apparatus 1300 may be a first parent node or the first parent node may comprise apparatus 1300. In some aspects, apparatus 1300 includes a receiving component 1302 and a transmitting component 1304, the receiving component 902 and the transmitting component 904 can communicate with each other (e.g., via one or more buses and/or one or more other components). As shown, apparatus 1300 may communicate with another apparatus 1306 (such as a UE, a base station, or another wireless communication device) using a receiving component 1302 and a transmitting component 1304. As further shown, the apparatus 1300 can include a communication manager 1350. Communication manager 1350 may include a determination component 1308.

In some aspects, apparatus 1300 may be configured to perform one or more operations described herein in connection with fig. 7-8. Additionally or alternatively, the apparatus 1300 may be configured to perform one or more processes described herein, such as the process 1000 of fig. 10, the process 1100 of fig. 11, or a combination thereof. In some aspects, the apparatus 1300 and/or one or more components shown in fig. 13 may include: one or more components of the first parent node described in connection with fig. 2. Additionally or alternatively, one or more of the components shown in fig. 13 may be implemented within one or more of the components described in connection with fig. 2. Additionally or alternatively, one or more components of the set of components may be at least partially implemented as software stored in memory. For example, a component (or a portion of a component) may be implemented as instructions or code stored in a non-transitory computer-readable medium and executable by a controller or processor to perform functions or operations of the component.

The receiving component 1302 can receive a communication, such as a reference signal, control information, data communication, or a combination thereof, from the device 1306. The receiving component 1302 can provide the received communication to one or more other components of the apparatus 1300. In some aspects, the receiving component 1302 can perform signal processing (such as filtering, amplifying, demodulating, analog-to-digital converting, demultiplexing, deinterleaving, demapping, equalizing, interference cancellation, or decoding, among other examples) on the received communication and can provide the processed signal to one or more other components of the apparatus 1300. In some aspects, the receiving component 1302 can include one or more antennas, modems, demodulators, MIMO detectors, receive processors, controllers/processors, memory, or a combination thereof of the first parent node described in connection with fig. 2.

The transmitting component 1304 can transmit a communication, such as a reference signal, control information, data communication, or a combination thereof, to the device 1306. In some aspects, one or more other components of apparatus 1300 may generate a communication, and may provide the generated communication to transmission component 1304 for transmission to apparatus 1306. In some aspects, the transmitting component 1304 can perform signal processing (such as filtering, amplifying, modulating, digital-to-analog conversion, multiplexing, interleaving, mapping, or encoding, among other examples) on the generated communication and can transmit the processed signal to the device 1306. In some aspects, the transmitting component 1304 may include one or more antennas, modems, modulators, transmit MIMO processors, transmit processors, controllers/processors, memory, or a combination thereof of the first parent node described in connection with fig. 2. In some aspects, the transmitting component 1304 may be collocated with the receiving component 1302 in a transceiver.

The receiving component 1302 can receive assistance information related to a wireless node in simultaneous communication with a first parent node and a second parent node. The receiving component 1302 and/or the transmitting component 1304 can communicate with a wireless node based at least in part on the assistance information.

The receiving component 1302 may receive, from the wireless node, an indication of a capability of the wireless node to communicate with the first parent node and the second parent node simultaneously.

The transmitting component 1304 may transmit an indication of the wireless node's capability for simultaneous communication to a second parent node via an interface between a first central unit associated with the first parent node and a second central unit associated with the second parent node.

The transmitting component 1304 may transmit a recommended configuration for communication between the wireless node and the second parent node to at least one of the wireless node, the second parent node, or a central unit associated with the first parent node based at least in part on receiving the assistance information. The determine component 1308 may determine a recommended configuration for communication between the wireless node and the second parent node.

The transmitting component 1304 may transmit a configuration for communication between the wireless node and the first parent node to the wireless node, wherein the configuration is based at least in part on the assistance information.

The transmitting component 1304 may transmit assistance information to at least one of the second parent node, the central unit, or the wireless node related to simultaneous communication of the wireless node with the first parent node and the second parent node. The receiving component 1302 and/or the transmitting component 1304 can communicate with a wireless node based at least in part on the assistance information.

The number and arrangement of components shown in fig. 13 are provided as examples. In practice, there may be additional components, fewer components, different components, or components arranged in a different manner than those shown in fig. 13. Further, two or more components shown in fig. 13 may be implemented within a single component, or a single component shown in fig. 13 may be implemented as multiple distributed components. Additionally or alternatively, one set (one or more) of components shown in fig. 13 may perform one or more functions described as being performed by another set of components shown in fig. 13.

The following provides an overview of some aspects of the disclosure:

Aspect 1: a method of performing wireless communication by a wireless node, comprising: transmitting assistance information to at least one of a first parent node or a second parent node relating to simultaneous communication of the wireless node with the first parent node and the second parent node; and communicate with at least one of the first parent node or the second parent node based at least in part on the assistance information.

Aspect 2: the method of aspect 1, further comprising: an indication of the wireless node's ability to communicate with the first parent node and the second parent node simultaneously is sent to at least one of the first parent node or the second parent node.

Aspect 3: the method of aspect 2, wherein the indication comprises an indication of the wireless node's ability to transmit and receive simultaneously on multiple serving cells in a frequency band.

Aspect 4: the method of any of aspects 1-3, wherein transmitting the assistance information comprises: an indication of at least one of a requested transmit beam or a requested receive beam for communication with the first parent node is sent to the first parent node.

Aspect 5: the method of any of aspects 1-4, wherein transmitting the assistance information comprises: an indication is sent to the first parent node that at least one of a transmit beam or a receive beam for communication with the first parent node is not preferred.

Aspect 6: the method of any of aspects 1-5, wherein transmitting the assistance information comprises: an indication is sent to the first parent node of at least one of one or more transmit beams or one or more receive beams the wireless node is configured to communicate with the second parent node.

Aspect 7: the method of any of aspects 1-6, wherein transmitting the assistance information comprises: an indication of at least one of the requested guard symbol or the requested guard band is sent to the first parent node.

Aspect 8: the method of any of aspects 1-7, wherein transmitting the assistance information comprises: an indication of at least one of a guard symbol or guard band provided by the second parent node is sent to the first parent node.

Aspect 9: the method of any of aspects 1-8, wherein transmitting the assistance information comprises: an indication of at least one of a requested downlink transmit power adjustment for the first parent node or a requested uplink transmit power for uplink communication to the first parent node is sent to the first parent node.

Aspect 10: the method of any of aspects 1-9, wherein transmitting the assistance information comprises: an indication of at least one of downlink received power for downlink communications from the second parent node, uplink transmit power for uplink communications to the second parent node, or downlink transmit power adjustment for the second parent node is sent to the first parent node.

Aspect 11: the method of any of aspects 1-10, wherein transmitting the assistance information comprises: an indication of at least one of a requested downlink transmit power adjustment for the first parent node or a requested uplink transmit timing for uplink communication to the first parent node is sent to the first parent node.

Aspect 12: the method of any of aspects 1-11, wherein transmitting the assistance information comprises: an indication of at least one of a downlink receive timing for downlink communications from the second parent node or an uplink transmit timing for uplink communications to the second parent node is sent to the first parent node.

Aspect 13: the method of any of aspects 1-12, wherein transmitting the assistance information comprises: an indication of at least one of a requested downlink reference signal configuration or a requested uplink reference signal configuration associated with the first parent node is sent to the first parent node.

Aspect 14: the method of any of aspects 1-13, wherein transmitting the assistance information comprises: an indication of at least one of a downlink reference signal configuration or an uplink reference signal configuration associated with the second parent node is sent to the first parent node.

Aspect 15: the method of any of aspects 1-14, wherein the assistance information is associated with a resource configured for simultaneous communication with the first parent node and the second parent node.

Aspect 16: the method of any of claims 1-15, wherein the assistance information is associated with a set of time and frequency resources.

Aspect 17: the method of any of aspects 1-16, wherein transmitting the assistance information comprises: the auxiliary information is sent to the first parent node, wherein the first parent node is an auxiliary node and the second parent node is a master node.

Aspect 18: the method of any of aspects 1-17, wherein the assistance information is associated with at least one of a resource type, a signal type, or a channel type.

Aspect 19: the method of any one of aspects 1-18, further comprising: a configuration for communicating with the first parent node is received from the first parent node based at least in part on sending the assistance information to the first parent node.

Aspect 20: the method of any one of aspects 1-19, further comprising: a recommended configuration for communicating between the wireless node and the second parent node is received from the first parent node.

Aspect 21: the method of aspect 20, wherein transmitting the assistance information comprises: the assistance information is transmitted to the second parent node, wherein the assistance information is configured based at least in part on the recommendation for communicating between the wireless node and the second parent node.

Aspect 22: the method of any of aspects 20-21, wherein transmitting the assistance information comprises: the recommended configuration for communicating between the wireless node and the second parent node is sent to the second parent node.

Aspect 23: the method of any of aspects 20-22, wherein transmitting the assistance information comprises: the method further includes transmitting the auxiliary information to the first parent node, and wherein receiving the recommended configuration from the first parent node for communication with the first parent node is based at least in part on transmitting the auxiliary information to the first parent node.

Aspect 24: the method of aspect 23, further comprising: the recommended configuration for communicating between the wireless node and the second parent node is sent to the second parent node.

Aspect 25: the method of any of claims 20-24, wherein the recommended configuration for communicating between the wireless node and the second parent node comprises at least one of: an indication of at least one of a transmit beam or a receive beam for use by the wireless node in communicating with the second parent node, an indication of at least one of a guard symbol or a guard band for use in communicating with the second parent node, an indication of uplink transmit power for uplink communication to the second parent node, an indication of uplink transmit timing for uplink communication to the second parent node, an indication of at least one of a downlink reference signal configuration or an uplink reference signal configuration, or an indication of downlink transmit power for the second parent node.

Aspect 26: the method of any of claims 20-25, wherein the recommended configuration for communicating between the wireless node and the second parent node is associated with a resource configured for simultaneous communication with the first parent node and the second parent node.

Aspect 27: the method of any of aspects 20-26, wherein the recommended configuration for communicating between the wireless node and the second parent node is associated with a set of time and frequency resources.

Aspect 28: the method of any of aspects 20-27, wherein the recommended configuration for communicating between the wireless node and the second parent node is associated with at least one of a resource type, a signal type, or a channel type.

Aspect 29: the method of any of aspects 1-28, wherein transmitting the assistance information comprises: an indication of utilization of resources configured for a plurality of periodic or beam sweep communications associated with the second parent node by the wireless node is sent to the first parent node.

Aspect 30: the method of claim 29, wherein transmitting the indication of the utilization of the resources configured for the plurality of periodic or beam sweep communications associated with the second parent node comprises: a respective utilization indication is sent for each of the resources configured for the plurality of periodic or beam sweep communications associated with the second parent node.

Aspect 31: the method of aspect 30, wherein the respective utilization indication for each resource is based at least in part on a comparison of utilization of the resource measured over a time window to a threshold.

Aspect 32: the method of any of aspects 30-31, wherein transmitting the respective utilization indication for each of the resources configured for the plurality of periodic or beam sweep communications associated with the second parent node comprises: for each of the resources configured for the plurality of periodic or beam sweep communications associated with the second parent node, sending an indication of a respective index associated with the resource and the respective utilization indication for the resource.

Aspect 33: the method of any of claims 29-32, wherein the resources configured for the plurality of periodic or beam sweep communications associated with the second parent node comprise at least one of: synchronization Signal Block (SSB) resources, channel state information reference signal (CSI-RS) resources, scheduling Request (SR) resources, random Access Channel (RACH) resources, or system information block type 1 (SIB 1) search space resources.

Aspect 34: the method of any of aspects 1-33, wherein communicating with at least one of the first parent node or the second parent node comprises: communicate with the first parent node and the second parent node simultaneously based at least in part on the assistance information.

Aspect 35: the method of any of claims 1-34, wherein the wireless node is an Integrated Access and Backhaul (IAB) mobile terminal (IAB-MT).

Aspect 36: the method of any of claims 1-34, wherein the wireless node is a User Equipment (UE).

Aspect 37: a method of performing wireless communication by a first parent node, comprising: receiving auxiliary information related to simultaneous communication of a wireless node with the first parent node and the second parent node; and communicate with the wireless node based at least in part on the assistance information.

Aspect 38: the method of aspect 37, further comprising: receiving, from the wireless node, an indication of the wireless node's ability to communicate with the first parent node and the second parent node simultaneously; and sending the indication of the capability of the wireless node for simultaneous communication to the second parent node via an interface between a first central unit associated with the first parent node and a second central unit associated with the second parent node.

Aspect 39: the method of aspect 38, wherein the indication comprises an indication of the wireless node's ability to transmit and receive simultaneously on multiple serving cells in a frequency band.

Aspect 40: the method of any of claims 37-39, wherein receiving the assistance information comprises: the assistance information is received from at least one of the wireless node, the second parent node, or a central unit associated with the first parent node.

Aspect 41: the method of any of claims 37-40, wherein receiving the assistance information comprises: an indication of at least one of a requested transmit beam or a requested receive beam for communication with the first parent node is received from the wireless node.

Aspect 42: the method of any of claims 37-41, wherein receiving the assistance information comprises: an indication is received from the wireless node that at least one of a transmit beam or a receive beam for communication with the first parent node is not preferred.

Aspect 43: the method of any of claims 37-42, wherein receiving the assistance information comprises: an indication is received from the wireless node of at least one of one or more transmit beams or one or more receive beams used by the wireless node to communicate with a second parent node.

Aspect 44: the method of any of claims 37-43, wherein receiving the assistance information comprises: an indication of at least one of a requested guard symbol or a requested guard band is received from the wireless node.

Aspect 45: the method of any of claims 37-44, wherein receiving the assistance information comprises: an indication is received from the wireless node regarding at least one of a guard symbol or a guard band provided by the second parent node.

Aspect 46: the method of any of claims 37-45, wherein receiving the assistance information comprises: an indication of at least one of a requested downlink transmit power adjustment for the first parent node or a requested uplink transmit power for uplink communications to the first parent node is received from the wireless node.

Aspect 47: the method of any of claims 37-46, wherein receiving the assistance information comprises: an indication of at least one of a downlink received power for downlink communications from the second parent node, an uplink transmit power for uplink communications to the second parent node, or a downlink transmit power adjustment for the second parent node is received from the wireless node.

Aspect 48: the method of any of claims 37-47, wherein receiving the assistance information comprises: an indication of at least one of a requested downlink transmit timing adjustment for the first parent node or a requested uplink transmit timing for uplink communications to the first parent node is received from the wireless node.

Aspect 49: the method of any of claims 37-48, wherein receiving the assistance information comprises: an indication is received from the wireless node of at least one of a downlink receive timing for downlink communications from the second parent node or an uplink transmit timing for uplink communications to the second parent node.

Aspect 50: the method of any of claims 37-49, wherein receiving the assistance information comprises: an indication of at least one of a requested downlink reference signal configuration or a requested uplink reference signal configuration associated with the first parent node is received from the wireless node.

Aspect 51: the method of any of claims 37-50, wherein receiving the assistance information comprises: an indication is received from the wireless node regarding at least one of a downlink reference signal configuration or an uplink reference signal configuration associated with the second parent node.

Aspect 52: the method of any of claims 37-51, wherein the assistance information is associated with a resource configured for simultaneous communication with the first parent node and the second parent node.

Aspect 53: the method of any of claims 37-52, wherein the assistance information is associated with a set of time and frequency resources.

Aspect 54: the method of any of claims 37-53, wherein the assistance information is associated with at least one of a resource type, a signal type, or a channel type.

Aspect 55: the method of any of claims 37-54, wherein receiving the assistance information comprises: a recommended configuration for communicating between the wireless node and the first parent node is received from at least one of the second parent node, a central unit associated with the first parent node, or the wireless node.

Aspect 56: the method of any one of aspects 37-54, further comprising: based at least in part on receiving the assistance information, a recommended configuration for communicating between the wireless node and the second parent node is sent to at least one of the wireless node, the second parent node, or a central unit associated with the first parent node.

Aspect 57: the method of any of claims 37-56, wherein receiving the assistance information comprises: an indication of utilization of resources configured for a plurality of periodic or beam sweep communications associated with the second parent node by the wireless node is received from at least one of the wireless node, the second parent node, or a central unit associated with the first parent node.

Aspect 58: the method of aspect 57, wherein receiving the indication of the utilization of the resources configured for the plurality of periodic or beam sweep communications associated with the second parent node comprises: a respective utilization indication is received for each of the resources configured for the plurality of periodic or beam sweep communications associated with the second parent node.

Aspect 59: the method of aspect 58, wherein receiving the respective utilization indication for each of the resources configured for the plurality of periodic or beam sweep communications associated with the second parent node comprises: for each of the resources configured for the plurality of periodic or beam sweep communications associated with the second parent node, receiving the indication of the respective index associated with the resource and the respective utilization indication for the resource.

Aspect 60: the method of any of aspects 57-59, wherein the resources configured for the plurality of periodic or beam sweep communications associated with the second parent node include at least one of: synchronization Signal Block (SSB) resources, channel state information reference signal (CSI-RS) resources, scheduling Request (SR) resources, random Access Channel (RACH) resources, or system information block type 1 (SIB 1) search space resources.

Aspect 61: the method of any one of aspects 37-60, further comprising: a configuration for communicating between the wireless node and the first parent node is transmitted to the wireless node, wherein the configuration is based at least in part on the assistance information.

Aspect 62: the method of aspect 61, wherein communicating with the wireless node based at least in part on the assistance information comprises: when the wireless node communicates with the second parent node simultaneously, communication is performed with the wireless node based at least in part on the configuration.

Aspect 63: the method of any of claims 37-62, wherein the wireless node is an Integrated Access and Backhaul (IAB) mobile terminal (IAB-MT).

Aspect 64: the method of any of claims 37-62, wherein the wireless node is a User Equipment (UE).

Aspect 65: a method of performing wireless communication by a first parent node, comprising: transmitting assistance information to at least one of a second parent node, a central unit, or a wireless node relating to simultaneous communication of the wireless node with the first parent node and the second parent node; and communicate with the wireless node based at least in part on the assistance information.

Aspect 66: the method of aspect 65, wherein transmitting the assistance information comprises: a recommended configuration for communication between the wireless node and the second parent node is sent to at least one of the wireless node, the second parent node, or the central unit associated with the first parent node.

Aspect 67: the method of aspect 66, wherein the recommended configuration for communicating between the wireless node and the second parent node includes at least one of: an indication of at least one of a transmit beam or a receive beam for communication with the second parent node by the wireless node, an indication of at least one of a guard symbol or a guard band for communication with the second parent node, an indication of uplink transmit power for uplink communication to the second parent node, an indication of uplink transmit timing for uplink communication to the second parent node, an indication of at least one of a downlink reference signal configuration or an uplink reference signal configuration, or an indication of downlink transmit power for the second node.

Aspect 68: the method of any of aspects 66-67, wherein the recommended configuration for communicating between the wireless node and the second parent node includes one or more restrictions on a configuration for communicating between the wireless node and the second parent node.

Aspect 69: the method of any of aspects 66-68, wherein the recommended configuration for communicating between the wireless node and the second parent node is associated with a resource configured for simultaneous communication by the wireless node with the first parent node and the second parent node.

Aspect 70: the method of any of aspects 66-69, wherein the recommended configuration for communicating between the wireless node and the second parent node is associated with a set of time and frequency resources.

Aspect 71: the method of any of aspects 66-70, wherein the recommended configuration for communicating between the wireless node and the second parent node is associated with at least one of a resource type, a signal type, or a channel type.

Aspect 72: the method of any of aspects 66-71, wherein communicating with the wireless node based at least in part on the assistance information comprises: a configuration is used that is based at least in part on the recommended configuration for communicating between the wireless node and the second parent node, to communicate with the wireless node, and to communicate simultaneously with the second parent node.

Aspect 73: the method of any of aspects 65-72, wherein transmitting the assistance information comprises: an indication of utilization of resources configured for a plurality of periodic or beam sweep communications associated with the first parent node by the wireless node is sent to at least one of the second parent node or the central unit associated with the first parent node.

Aspect 74: the method of aspect 73, wherein transmitting the indication of the utilization of the resources configured for the plurality of periodic or beam sweep communications associated with the first parent node comprises: a respective utilization indication is sent for each of the resources configured for the plurality of periodic or beam sweep communications associated with the first parent node.

Aspect 75: the method of aspect 74, wherein the respective utilization indication for each resource is based at least in part on a comparison of utilization of the resource measured over a time window to a threshold.

Aspect 76: the method of any of aspects 74-75, wherein transmitting the respective utilization indication for each of the resources configured for the plurality of periodic or beam sweep communications associated with the second parent node comprises: for each of the resources configured for the plurality of periodic or beam sweep communications associated with the first parent node, sending an indication of a respective index associated with the resource and the respective utilization indication for the resource.

Aspect 77: the method of any of aspects 73-76, wherein the resources configured for the plurality of periodic or beam sweep communications associated with the first parent node comprise at least one of: synchronization Signal Block (SSB) resources, channel state information reference signal (CSI-RS) resources, scheduling Request (SR) resources, random Access Channel (RACH) resources, or system information block type 1 (SIB 1) search space resources.

Aspect 78: the method of any of claims 65-77, wherein the wireless node is an Integrated Access and Backhaul (IAB) mobile terminal (IAB-MT).

Aspect 79: the method of any of claims 65-77, wherein the wireless node is a User Equipment (UE).

Aspect 80: an apparatus for wireless communication at a device, comprising: a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform the method according to one or more of aspects 1-36.

Aspect 81: an apparatus for wireless communication, comprising a memory and one or more processors coupled to the memory, the one or more processors configured to perform the method of one or more of aspects 1-36.

Aspect 82: an apparatus for wireless communication, comprising at least one unit for performing the method of one or more of aspects 1-36.

Aspect 83: a non-transitory computer-readable medium storing code for wireless communication, the code comprising instructions executable by a processor to perform the method of one or more of aspects 1-36.

Aspect 84: a non-transitory computer-readable medium storing a set of instructions for wireless communication, the set of instructions comprising one or more instructions that, when executed by one or more processors of a device, cause the device to perform the method of one or more of aspects 1-36.

Aspect 85: an apparatus for wireless communication at a device, comprising: a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform the method according to one or more of aspects 37-64.

Aspect 86: an apparatus for wireless communication, comprising a memory and one or more processors coupled to the memory, the one or more processors configured to perform the method of one or more of aspects 37-64.

Aspect 87: an apparatus for wireless communication, comprising at least one unit to perform the method of one or more of aspects 37-64.

Aspect 88: a non-transitory computer-readable medium storing code for wireless communication, the code comprising instructions executable by a processor to perform the method of one or more of aspects 37-64.

Aspect 89: a non-transitory computer-readable medium storing a set of instructions for wireless communication, the set of instructions comprising one or more instructions that, when executed by one or more processors of a device, cause the device to perform a method according to one or more of aspects 37-64.

Aspect 90: an apparatus for wireless communication at a device, comprising: a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform the method according to one or more of aspects 65-79.

Aspect 91: an apparatus for wireless communication, comprising a memory and one or more processors coupled to the memory, the one or more processors configured to perform the method of one or more of aspects 65-79.

Aspect 92: an apparatus for wireless communication, comprising at least one unit to perform the method of one or more of aspects 65-79.

Aspect 93: a non-transitory computer-readable medium storing code for wireless communication, the code comprising instructions executable by a processor to perform the method of one or more of aspects 65-79.

Aspect 94: a non-transitory computer-readable medium storing a set of instructions for wireless communication, the set of instructions comprising one or more instructions that, when executed by one or more processors of a device, cause the device to perform a method according to one or more of aspects 65-79.

The foregoing disclosure provides illustration and description, but is not intended to be exhaustive or to limit the aspects to the precise form disclosed. Modifications and variations are possible in light of the above disclosure or may be acquired from practice of the various aspects.

As used herein, the term "component" is intended to be broadly interpreted as hardware and/or a combination of hardware and software. Whether referred to as software, firmware, middleware, microcode, hardware description language, or other names, should be broadly interpreted to mean instructions, instruction sets, code segments, program code, programs, subroutines, software modules, applications, software packages, routines, subroutines, objects, executables, threads of execution, procedures, and/or functions, and other examples. As used herein, a processor is implemented in hardware and/or a combination of hardware and software. It will be apparent that the systems and/or methods described herein may be implemented in various forms of hardware and/or combinations of hardware and software. The actual specialized control hardware or software code used to implement the systems and/or methods is not limiting of the aspects. Thus, the operations and behavior of the systems and/or methods were described without reference to the specific software code-as one of ordinary skill in the art would understand that software and hardware could be designed to implement the systems and/or methods based at least in part on the description herein.

As used herein, a "meeting a threshold" may refer to a value greater than a threshold, greater than or equal to a threshold, less than or equal to a threshold, not equal to a threshold, etc., depending on the context.

Even if specific combinations of features are recited in the claims and/or disclosed in the specification, such combinations are not intended to limit the disclosure of the various aspects. Many of these features may be combined in ways not specifically recited in the claims and/or disclosed in the specification. The disclosure of the various aspects includes the combination of each dependent claim with each other claim in the set of claims. As used herein, a phrase referring to "at least one item in a list of items" refers to any combination of these items, including single members. For example, "at least one of a, b, or c" is intended to encompass a, b, c, a +b, a+c, b+c, and a+b+c, as well as any combination of the same elements as multiples thereof (e.g., a+a, a+a+b, a+a+c, a+b+b, a+c+c, b+b, b+b+c, c+c, and c+c, or any other ordering of a, b, and c).

No element, act, or instruction used herein should be construed as critical or essential unless explicitly described as such. Furthermore, as used herein, the articles "a" and "an" are intended to include one or more items, and may be used interchangeably with "one or more". Furthermore, as used herein, the article "the" is intended to include one or more items recited in conjunction with the article "the" and may be used interchangeably with "one or more". Furthermore, as used herein, the terms "set" and "group" are intended to include one or more items, and may be used interchangeably with "one or more". If only one item is intended, the phrase "only one" or similar terms will be used. Furthermore, as used herein, the terms "having," "having," and the like are intended to be open-ended terms that do not limit the element they modify (e.g., the element "having" a may also have B). Further, the phrase "based on" is intended to mean "based, at least in part, on" unless explicitly stated otherwise. Furthermore, as used herein, the term "or" when used in a series is intended to be inclusive and may be used interchangeably with "and/or" unless specifically stated otherwise (e.g., if used in conjunction with "either" or "only one of").

Claims

1. A wireless node for wireless communication, comprising:

A memory; and

One or more processors coupled with the memory configured to:

Transmitting assistance information to at least one of a first parent node or a second parent node relating to simultaneous communication of the wireless node with the first parent node and the second parent node; and

Based at least in part on the assistance information, communicate with at least one of the first parent node or the second parent node.

2. The wireless node of claim 1, wherein the one or more processors are further configured to:

An indication of the wireless node's ability to communicate simultaneously with the first parent node and the second parent node is sent to at least one of the first parent node or the second parent node, wherein the indication includes an indication of the wireless node's ability to transmit and receive simultaneously on multiple serving cells in a frequency band.

3. The wireless node of claim 1, wherein the one or more processors for transmitting the assistance information are configured to transmit at least one of the following to the first parent node:

An indication of at least one of a requested transmit beam or a requested receive beam for communication with the first parent node,

An indication of at least one of a transmit beam or a receive beam not preferred for communication with the first parent node, or

An indication of at least one of one or more transmit beams or one or more receive beams used by the wireless node to communicate with the second parent node.

4. The wireless node of claim 1, wherein the one or more processors for transmitting the assistance information are configured to transmit at least one of the following to the first parent node:

An indication of at least one of the requested guard symbol or the requested guard band, or

An indication of at least one of a guard symbol or guard band provided by the second parent node.

5. The wireless node of claim 1, wherein the one or more processors for transmitting the assistance information are configured to transmit at least one of the following to the first parent node:

An indication of at least one of a requested downlink transmit power adjustment for the first parent node or a requested uplink transmit power for uplink communication to the first parent node, or

An indication of at least one of: downlink received power for downlink communications from the second parent node, uplink transmit power for uplink communications to the second parent node, or downlink transmit power adjustment for the second parent node.

6. The wireless node of claim 1, wherein the one or more processors for transmitting the assistance information are configured to transmit at least one of the following to the first parent node:

an indication of at least one of: requested downlink transmit timing adjustment for the first parent node, or requested uplink transmit timing for uplink communication to the first parent node, or

An indication of at least one of a downlink receive timing for downlink communications from the second parent node or an uplink transmit timing for uplink communications to the second parent node.

7. The wireless node of claim 1, wherein the one or more processors for transmitting the assistance information are configured to transmit at least one of the following to the first parent node:

An indication of at least one of a requested downlink reference signal configuration or a requested uplink reference signal configuration associated with the first parent node, or

An indication of at least one of a downlink reference signal configuration or an uplink reference signal configuration associated with the second parent node.

8. The wireless node of claim 1 wherein the assistance information is associated with a resource configured for simultaneous communication with the first parent node and the second parent node,

Wherein the auxiliary information is associated with a set of time and frequency resources, or

Wherein the assistance information is associated with at least one of a resource type, a signal type, and a channel type.

9. The wireless node of claim 1, wherein the one or more processors for transmitting the assistance information are configured to:

The auxiliary information is sent to the first parent node, wherein the first parent node is an auxiliary node and the second parent node is a master node.

10. The wireless node of claim 1, wherein the one or more processors are further configured to:

A configuration for communicating with the first parent node is received from the first parent node based at least in part on sending the assistance information to the first parent node.

11. The wireless node of claim 1, wherein the one or more processors are further configured to:

A recommended configuration for communicating between the wireless node and the second parent node is received from the first parent node.

12. The wireless node of claim 11, wherein the one or more processors for transmitting the assistance information are configured to:

the assistance information is transmitted to the second parent node, wherein the assistance information is configured based at least in part on the recommendation for communicating between the wireless node and the second parent node.

13. The wireless node of claim 11, wherein the one or more processors for transmitting the assistance information are configured to: the method further includes transmitting the assistance information to the first parent node, and wherein the one or more processors are configured to receive the recommended configuration for communicating between the wireless node and the second parent node from the first parent node based at least in part on transmitting the assistance information to the first parent node.

14. The wireless node of claim 13, wherein the one or more processors are further configured to:

The recommended configuration for communicating between the wireless node and the second parent node is sent to the second parent node.

15. The wireless node of claim 11, wherein the recommended configuration for communicating between the wireless node and the second parent node comprises at least one of:

An indication of at least one of a transmit beam or a receive beam used by the wireless node for communication with the second parent node,

An indication of at least one of a guard symbol or guard band for communication with the second parent node,

An indication of uplink transmit power for uplink communications to the second parent node,

An indication of uplink transmit timing for uplink communications to the second parent node,

An indication of at least one of a downlink reference signal configuration or an uplink reference signal configuration, or

An indication of downlink transmit power for the second parent node.

16. The wireless node of claim 11 wherein the recommended configuration for communicating between the wireless node and the second parent node is associated with a resource configured for simultaneous communication with the first parent node and the second parent node,

Wherein the recommended configuration for communication between the wireless node and the second parent node is associated with a set of time and frequency resources, or

Wherein the recommended configuration for communication between the wireless node and the second parent node is associated with at least one of a resource type, a signal type, or a channel type.

17. The wireless node of claim 1, wherein the one or more processors for transmitting the assistance information are configured to:

an indication of utilization of resources configured for a plurality of periodic or beam sweep communications associated with the second parent node by the wireless node is sent to the first parent node.

18. The wireless node of claim 1, wherein the one or more processors for communicating with at least one of the first parent node or the second parent node are configured to:

based at least in part on the assistance information, concurrently communicate with the first parent node and the second parent node.

19. The wireless node of claim 1, wherein the wireless node is an Integrated Access and Backhaul (IAB) mobile terminal (IAB-MT).

20. The wireless node of claim 1, wherein the wireless node is a User Equipment (UE).

21. A first parent node for wireless communication, comprising:

A memory; and

One or more processors coupled with the memory configured to:

Receiving auxiliary information related to simultaneous communication of a wireless node with the first parent node and the second parent node; and

Based at least in part on the assistance information, communicate with the wireless node.

22. The first parent node of claim 21, wherein the one or more processors are configured to:

Receiving, from the wireless node, an indication of the wireless node's ability to communicate simultaneously with the first parent node and the second parent node, wherein the indication comprises an indication of the wireless node's ability to transmit and receive simultaneously on a plurality of serving cells in a frequency band; and

The indication of the capability of the wireless node for simultaneous communication is sent to the second parent node via an interface between a first central unit associated with the first parent node and a second central unit associated with the second parent node.

23. The first parent node of claim 21, wherein the one or more processors to receive the auxiliary information are configured to:

The assistance information is received from at least one of the wireless node, the second parent node, or a central unit associated with the first parent node.

24. The first parent node of claim 21, wherein the one or more processors to receive the assistance information are configured to receive at least one of the following from the wireless node:

An indication that at least one of a transmit beam or a receive beam for communication with the first parent node is not preferred,

An indication of at least one of one or more transmit beams or one or more receive beams used by the wireless node to communicate with the second parent node,

An indication of at least one of the requested guard symbol or the requested guard band,

An indication of at least one of a guard symbol or guard band provided by the second parent node,

An indication of at least one of a requested downlink transmit power adjustment for the first parent node or a requested uplink transmit power for uplink communications to the first parent node,

An indication of at least one of: downlink received power for downlink communications from the second parent node, uplink transmit power for uplink communications to the second parent node, or downlink transmit power adjustment for the second parent node,

An indication of at least one of: a requested downlink transmit timing adjustment for the first parent node or a requested uplink transmit timing for uplink communications to the first parent node,

An indication of at least one of a downlink receive timing for downlink communications from the second parent node or an uplink transmit timing for uplink communications to the second parent node,

25. The first parent node of claim 21, wherein the one or more processors to receive the auxiliary information are configured to:

a recommended configuration for communicating between the wireless node and the first parent node is received from at least one of the second parent node, a central unit associated with the first parent node, or the wireless node.

26. The first parent node of claim 21, wherein the one or more processors are further configured to:

based at least in part on the assistance information, a recommended configuration for communicating between the wireless node and the second parent node is sent to at least one of the wireless node, the second parent node, or a central unit associated with the first parent node.

27. The first parent node of claim 21, wherein the one or more processors to receive the auxiliary information are configured to:

An indication of utilization of resources configured for a plurality of periodic or beam sweep communications associated with the second parent node by the wireless node is received from at least one of the wireless node, the second parent node, or a central unit associated with the first parent node.

28. The first parent node of claim 21, wherein the one or more processors are further configured to:

A configuration for communicating between the wireless node and the first parent node is transmitted to the wireless node, wherein the configuration is based at least in part on the assistance information.

29. A method of performing wireless communication by a wireless node, comprising:

30. A method of performing wireless communication by a first parent node, comprising: