Autonomous beamforming configuration changes

Abstract

Certain aspects of the present disclosure provide techniques for autonomous beamforming configuration changes. A method that may be performed by a wireless node includes determining a communication mode to be used for communication by the wireless node, wherein the determination of the communication mode includes determining whether the communication is associated with multiple simultaneous communications with one or more other wireless nodes. The method may also include determining a beamforming configuration to be used for communication based on the communication mode; and communicating using the beamforming configuration according to the communication mode.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to U.S. Application No. 17 / 158,623, filed on January 26, 2021, which claims the benefit of and priority to U.S. Provisional Application No. 62 / 967,385, filed on January 29, 2020, which is hereby assigned to the assignee of this application and is hereby expressly incorporated herein by reference in its entirety, as if fully set forth below and for all applicable purposes. Technical Field

[0003] Aspects of the present disclosure relate to wireless communications, and more particularly, aspects of the present disclosure relate to techniques for beamforming. Background Art

[0004] Wireless communication systems are widely deployed to provide various telecommunication services such as telephony, video, data, messaging, broadcast, etc. These wireless communication systems may employ multiple access technologies capable of supporting communication with multiple users by sharing available system resources (e.g., bandwidth, transmit power, etc.). Examples of such multiple access systems include 3rd Generation Partnership Project (3GPP) Long Term Evolution (LTE) systems, Advanced LTE (LTE-A) systems, Code Division Multiple Access (CDMA) systems, Time Division Multiple Access (TDMA) systems, Frequency Division Multiple Access (FDMA) systems, Orthogonal Frequency Division Multiple Access (OFDMA) systems, Single Carrier Frequency Division Multiple Access (SC-FDMA) systems, and Time Division Synchronous Code Division Multiple Access (TD-SCDMA) systems, to name a few.

[0005] These multiple access technologies have been adopted in various telecommunication standards to provide a common protocol that enables different wireless devices to communicate at a city, country, region, and even global level. New radio (e.g., 5G NR) is an example of an emerging telecommunication standard. NR is an enhancement set to the LTE mobile standard released by 3GPP. NR is designed to better integrate with other open standards by improving spectrum efficiency, reducing costs, improving services, utilizing new spectrum, and using OFDMA with cyclic prefix (CP) on the downlink (DL) and on the uplink (UL), thereby better supporting mobile broadband Internet access. To this end, NR supports beamforming, multiple-input multiple-output (MIMO) antenna technology, and carrier aggregation.

[0006] However, as the demand for mobile broadband access continues to grow, there is a need for further improvements to NR and LTE technologies. Preferably, these improvements should be applicable to other multiple access technologies and the telecommunication standards that employ them. Summary of the invention

[0007] The systems, methods, and devices of the present disclosure each have several aspects, no single one of which is solely responsible for its desirable attributes. Without limiting the scope of the present disclosure as expressed by the claims that follow, some features will now be briefly discussed. After considering this discussion, and particularly after reading the section entitled "Detailed Description," it will be understood how the features of the present disclosure provide advantages, including improved configuration of beamforming.

[0008] Certain aspects of the subject matter described in this disclosure can be implemented in a method for wireless communications. In general, the method includes determining a communication mode to be used for communications by a wireless node, wherein the determination of the communication mode includes determining whether the communication is associated with multiple simultaneous communications with one or more other wireless nodes; determining a beamforming configuration to be used for the communication based on the communication mode; and communicating in accordance with the communication mode using the beamforming configuration.

[0009] Certain aspects of the subject matter described in this disclosure may be implemented in an apparatus for wireless communication by a wireless node. In general, the apparatus includes a memory and a processor coupled to the memory, the memory and the processor configured to: determine a communication mode to be used for communication by the wireless node. The processor and the memory are further configured to: determine the communication mode by determining whether the communication is associated with multiple simultaneous communications with one or more other wireless nodes. The processor and the memory are further configured to: determine a beamforming configuration to be used for the communication based on the communication mode; and use the beamforming configuration to communicate according to the communication mode.

[0010] Certain aspects of the subject matter described in this disclosure may be implemented in an apparatus for wireless communications by a wireless node. In general, the apparatus includes: means for determining a communication mode to be used for communications by the wireless node, wherein the means for determining the communication mode includes means for determining whether the communication is associated with multiple simultaneous communications with one or more other wireless nodes; means for determining a beamforming configuration to be used for the communication based on the communication mode; and means for communicating in accordance with the communication mode using the beamforming configuration.

[0011] Certain aspects of the subject matter described in the present disclosure may be implemented in a non-transitory computer-readable medium having stored instructions for causing a wireless node to: determine a communication mode to be used for communications to be performed by the wireless node, wherein the instructions further cause the wireless node to: determine the communication mode by determining whether the communication is associated with multiple simultaneous communications with one or more other wireless nodes; determine a beamforming configuration to be used for the communication based on the communication mode; and communicate in accordance with the communication mode using the beamforming configuration.

[0012] To achieve the aforementioned and related purposes, one or more aspects include the features fully described below and particularly pointed out in the claims. The following description and the accompanying drawings set forth in detail certain illustrative features of one or more aspects. However, these features indicate only a few of the various ways in which the principles of the various aspects can be employed. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order that the above-mentioned features of the present disclosure may be understood in detail, a more specific description (briefly summarized above) may be made by reference to various aspects, some of which are illustrated in the accompanying drawings. However, it should be noted that the accompanying drawings illustrate only certain typical aspects of the present disclosure and are therefore not to be considered as limiting its scope, as the description may admit of other equally effective aspects.

[0014] Figure 1 is a block diagram conceptually illustrating an example telecommunications system in accordance with certain aspects of the present disclosure.

[0015] Figure 2 is a block diagram conceptually illustrating designs of example base stations (BSs) and user equipment (UEs) in accordance with certain aspects of the present disclosure.

[0016] Figure 3 is a diagram illustrating an example of a radio access network in accordance with various aspects of the present disclosure.

[0017] Figure 4 is a diagram illustrating an example of an integrated access and backhaul (IAB) network architecture in accordance with various aspects of the present disclosure.

[0018] Figure 5A-5D Communications using full-duplex and half-duplex modes are shown.

[0019] Figure 6A-6C A communication protocol using zero point formation is shown.

[0020] Figure 7A-7D and Figure 8A-8D Different operation modes of an IAB node are shown.

[0021] Fig. 9 is a flow diagram illustrating example operations for wireless communications in accordance with certain aspects of the present disclosure.

[0022] Fig.10 A communication device in accordance with aspects of the present disclosure is shown, which may include various components configured to perform operations for the techniques disclosed herein.

[0023] To facilitate understanding, identical reference numerals have been used, where possible, to designate identical elements that are common to the figures. It is contemplated that elements disclosed in one aspect may be beneficially utilized on other aspects without specific recitation. DETAILED DESCRIPTION

[0024] Various aspects of the present disclosure provide apparatus, methods, processing systems, and computer-readable media for autonomous configuration of beamforming. For example, a wireless node may determine one or more beamforming configurations to be used for one or more communications based on at least one communication mode and at least one rule configured at the wireless node. In one example, a UE may determine that full-duplex mode will be used for a particular communication, and autonomously (e.g., without having to receive a configuration from a base station) determine the beamforming configuration to be used for the communication. At least one configured rule may map at least one communication mode to one or more beamforming configurations to be used. In certain implementations, the configured rules may indicate priorities associated with different communications, and the priorities may be considered when determining the beamforming configuration to be used, as described in more detail herein. The various aspects described herein improve communication efficiency by allowing a UE to autonomously select a beamforming configuration to be used without an explicit indication of the beamforming configuration from a base station.

[0025] The following description provides an example of a technology for beamforming configuration in a communication system without limiting the scope, applicability or examples set forth in the claims. Changes may be made to the functions and arrangements of the elements discussed without departing from the present disclosure. Various processes or components may be omitted, replaced or added to each example as appropriate. For example, the method described may be performed in an order different from the order described, and various steps may be added, omitted or combined. In addition, the features described with respect to some examples may be combined into some other examples. For example, a device may be implemented or a method may be implemented using any number of aspects set forth herein. In addition, the scope of the present disclosure is intended to cover such devices or methods implemented using other structures, functions, or structures and functions other than or different from 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. The word "exemplary" is used herein to mean "used as an example, instance or illustration". Any aspect described herein as "exemplary" may not necessarily be interpreted as being preferred or having advantages over other aspects.

[0026] Generally, any number of wireless networks may be deployed in a given geographic area. Each wireless network may support a specific radio access technology (RAT) and may operate on one or more frequencies. RAT may also be referred to as a radio technology, air interface, etc. Frequency may also be referred to as a carrier, subcarrier, frequency channel, tone, subband, etc. Each frequency may support a single RAT in a given geographic area to avoid interference between wireless networks with different RATs.

[0027] The techniques described herein can be used in a variety of wireless networks and radio technologies. Although various aspects may be described herein using terms that are generally associated with 3G, 4G, and / or new radio (e.g., 5G NR) wireless technologies, various aspects of the present disclosure can be applied to communication systems based on other generations.

[0028] NR access can support various wireless communication services, such as enhanced mobile broadband (eMBB) targeting wide bandwidth (e.g., 80 MHz or greater), millimeter wave (mmW) targeting high carrier frequency (e.g., 25 GHz or greater), massive machine type communication MTC (mMTC) targeting non-backward compatible MTC technology, and / or mission critical targeting ultra-reliable low latency communication (URLLC). These services may include latency and reliability requirements. These services may also have different transmission time intervals (TTIs) to meet corresponding quality of service (QoS) requirements. In addition, these services can coexist in the same subframe. NR supports beamforming and can dynamically configure beam directions. MIMO transmission with precoding can also be supported. MIMO configuration in DL can support up to 8 transmit antennas, with multi-layer DL transmission of up to 8 streams and up to 2 streams per UE. Multi-layer transmission with up to 2 streams per UE can be supported. Aggregation of multiple cells with up to 8 serving cells can be supported.

[0029] Figure 1 An example wireless communication network 100 is shown in which aspects of the present disclosure may be performed. For example, the wireless communication network 100 may be a NR system (e.g., a 5G NR network). Figure 1 As shown, the wireless communication network 100 may communicate with a core network 132. The core network 132 may communicate with one or more base stations (BSs) 110 and / or user equipments (UEs) 120 in the wireless communication network 100 via one or more interfaces.

[0030] like Figure 1 As shown, the wireless communication network 100 may include multiple BSs 110a-z (each also individually referred to herein as BS 110 or collectively referred to as BS 110) and other network entities. BS 110 may provide communication coverage for a specific geographic area (sometimes referred to as a "cell"), which may be fixed or may move depending on the location of the mobile BS 110. In some examples, BS 110 may be interconnected with each other and / or with one or more other BSs or network nodes (not shown) in the wireless communication network 100 through various types of backhaul interfaces (e.g., direct physical connections, wireless connections, virtual networks, etc.) using any suitable transport network. Figure 1In the example shown, BSs 110a, 110b, and 110c may be macro BSs for macro cells 102a, 102b, and 102c, respectively. BS 110x may be a pico BS for pico cell 102x. BSs 110y and 110z may be femto BSs for femto cells 102y and 102z, respectively. A BS may support one or more cells. A network controller 130 may be coupled to a set of BSs 110 and provide coordination and control (e.g., via a backhaul) for these BSs 110.

[0031] BS 110 communicates with UEs 120a-y (each also individually referred to herein as UE 120 or collectively referred to herein as UE 120) in the wireless communication network 100. UEs 120 (e.g., 120x, 120y, etc.) may be dispersed throughout the wireless communication network 100, and each UE 120 may be fixed or mobile. The wireless communication network 100 may also include a relay station (e.g., relay station 110r) (which may also be referred to as a repeater, etc.) that receives transmissions of data and / or other information from an upstream station (e.g., BS 110a or UE 120r) and sends transmissions of data and / or other information to a downstream station (e.g., UE 120 or BS 110), or relays transmissions between UEs 120 to facilitate communication between devices.

[0032] According to certain aspects, BS 110 and UE 120 may be configured for beamforming configuration. Figure 1 As shown, UE 120a includes a configuration manager 122, and BS 110 may include a configuration manager 112. According to aspects of the present disclosure, configuration manager 112 or configuration manager 122 may be configured to: determine a communication mode to be used for communication by a wireless node; determine a beamforming configuration to be used for communication based on the communication mode and rules configured at the wireless node; and use the beamforming configuration to communicate according to the communication mode.

[0033] Figure 2 Example components of BS 110a and UE 120a are shown (eg, in Figure 1 In the wireless communication network 100), it can be used to implement various aspects of the present disclosure.

[0034] At BS 110a, transmit processor 220 may receive data from data source 212 and control information from controller / processor 240. Control information may be used for a physical broadcast channel (PBCH), a physical control format indicator channel (PCFICH), a physical hybrid ARQ indicator channel (PHICH), a physical downlink control channel (PDCCH), a group common PDCCH (GC PDCCH), etc. Data may be used for a physical downlink shared channel (PDSCH), etc. A medium access control (MAC)-control element (MAC-CE) is a MAC layer communication structure that may be used for control command exchange between wireless nodes. A MAC-CE may be carried in a shared channel such as a physical downlink shared channel (PDSCH), a physical uplink shared channel (PUSCH), or a physical sidelink shared channel (PSSCH).

[0035] The processor 220 may process (e.g., encode and symbol map) data and control information, respectively, to obtain data symbols and control symbols. The processor 220 may also generate reference signals, such as for primary synchronization signals (PSS), secondary synchronization signals (SSS), and channel state information reference symbols (CSI-RS). The transmit (TX) multiple-input multiple-output (MIMO) processor 230 may perform spatial processing (e.g., precoding) on ​​data symbols, control symbols, and / or reference symbols (if applicable), and may provide an output symbol stream to a modulator (MOD) 232a-232t. Each modulator 232 may process a corresponding output symbol stream (e.g., for OFDM, etc.) to obtain an output sample stream. Each modulator may further process (e.g., convert to analog, amplify, filter, and up-convert) the output sample stream to obtain a downlink signal. Downlink signals from modulators 232a-232t may be sent via antennas 234a-234t, respectively.

[0036] At UE 120a, antennas 252a-252r can receive downlink signals from BS 110a and can provide received signals to demodulators (DEMODs) 254a-254r in the transceiver, respectively. Each demodulator 254 can adjust (e.g., filter, amplify, downconvert, and digitize) the corresponding received signal to obtain input samples. Each demodulator can further process the input samples (e.g., for OFDM, etc.) to obtain received symbols. MIMO detector 256 can obtain received symbols from all demodulators 254a-254r, perform MIMO detection on the received symbols (if applicable), and provide detected symbols. Receive processor 258 can process (e.g., demodulate, deinterleave, and decode) the detected symbols, provide decoded data for UE 120a to data sink 260, and provide decoded control information to controller / processor 280.

[0037] On the uplink, at the UE 120a, a transmit processor 264 may receive and process data from a data source 262 (e.g., for a physical uplink shared channel (PUSCH)) and control information from a controller / processor 280 (e.g., for a physical uplink control channel (PUCCH)). The transmit processor 264 may also generate reference symbols for reference signals (e.g., for a sounding reference signal (SRS)). The symbols from the transmit processor 264 may be precoded by a TX MIMO processor 266 (if applicable), further processed by a modulator (e.g., for SC-FDM, etc.) in a transceiver 254a-254r, and transmitted to the BS 110a. At the BS 110a, the uplink signal from the UE 120a may be received by the antenna 234, processed by the modulator 232, detected by the MIMO detector 236 (if applicable), and further processed by the receive processor 238 to obtain decoded data and control information transmitted by the UE 120a. The receive processor 238 may provide decoded data to a data sink 239 and decoded control information to a controller / processor 240 .

[0038] Memories 242 and 282 may store data and program codes for BS 110a and UE 120a, respectively.A scheduler 244 may schedule UEs for data transmission on the downlink and / or uplink.

[0039] The antennas 252, processors 266, 258, 264, and / or controller / processor 280 of the UE 120a and / or the antennas 234, processors 220, 230, 238, and / or controller / processor 240 of the BS 110a may be used to perform the various techniques and methods described herein. Figure 2 As shown, controller / processor 280 of UE 120a has configuration manager 122 and controller / processor 240 of BS 110 may include configuration manager 112, in accordance with aspects described herein. Although shown at the controller / processor level, other components of UE 120a may be used to perform the operations described herein.

[0040] NR can utilize orthogonal frequency division multiplexing (OFDM) with cyclic prefix (CP) on uplink and downlink. NR can support half-duplex operation using time division duplex (TDD). OFDM and single carrier frequency division multiplexing (SC-FDM) divide the system bandwidth into multiple orthogonal subcarriers, which are also commonly referred to as tones, frequency bands, etc. Each subcarrier can be modulated with data. Modulation symbols can be sent in the frequency domain using OFDM, and modulation symbols can be sent in the time domain using SC-FDM. The spacing between adjacent subcarriers can be fixed, and the total number of subcarriers can depend on the system bandwidth. The minimum resource allocation, called a resource block (RB), can be 12 consecutive subcarriers. The system bandwidth can also be divided into subbands. For example, a subband can cover multiple RBs. NR can support a basic subcarrier spacing (SCS) of 15KHz, and other SCSs (e.g., 30KHz, 60KHz, 120KHz, 240KHz, etc.) can be defined relative to the basic SCS.

[0041] Figure 3 is a diagram illustrating an example of a radio access network in accordance with various aspects of the present disclosure.

[0042] As shown by reference numeral 305, a traditional (e.g., 3G, 4G, LTE) radio access network may include multiple base stations 310 (e.g., access nodes (ANs)), each of which communicates with a core network via a wired backhaul link 315 (such as a fiber optic connection). The base stations 310 may communicate with UEs 320 via access links 325, which may be wireless links. In some aspects, Figure 3 The base station 310 shown in FIG. 3 may correspond to Figure 1 The base station 110 shown in FIG. Figure 3 The UE 320 shown in FIG. 3 may correspond to Figure 1 UE 120 shown in .

[0043] As shown in the reference numeral 330, the radio access network may include a wireless backhaul network. In some aspects or scenarios, the wireless backhaul network may sometimes be referred to as an integrated access and backhaul (IAB) network. The IAB network may include multiple base stations, and sometimes the base stations may be of different types or have different operating characteristics. For example, in some aspects, the IAB network may have at least one base station as an anchor base station 335. The anchor base station may communicate with the core network via a wired backhaul link 340 (such as a fiber optic connection). The anchor base station 335 may also be referred to as an IAB donor. An IAB donor is an access node with a wired connection to the core network. An IAB node is an access node that relays services from / to the anchor through one or more hops. The anchor base station may be configured to communicate with other types of base stations or other communication devices (e.g., in a radio network or an IAB network).

[0044] The IAB network may also include one or more non-anchor base stations 345. The non-anchor base stations may be referred to as relay base stations or IAB nodes. The non-anchor base stations 345 may communicate with the anchor base station 335 directly or indirectly (e.g., via one or more other non-anchor base stations 345) via one or more backhaul links 350 to form a backhaul path to the core network for carrying backhaul traffic. The backhaul link 350 may be a wireless link. The anchor base station 335 or the non-anchor base station 345 may communicate with one or more UEs 355 via an access link 360, which may be a wireless link for carrying access traffic. In some aspects, Figure 3 The anchor base station 335 or the non-anchor base station 345 shown in FIG. 3 may correspond to Figure 1 The base station 110 shown in FIG. Figure 3 The UE 355 shown in FIG. 3 may correspond to Figure 1 UE 120 shown in .

[0045] As shown in the reference numeral 365, in some aspects, a radio access network including an IAB network can utilize various spectrum types. For example, an IAB network can use a variety of different radio frequency bands. In several specific examples and according to some aspects, millimeter wave technology or directional communication can be used for communication (e.g., beamforming, precoding) between base stations or UEs (e.g., between two base stations, between two UEs, or between a base station and a UE). In additional or alternative aspects or examples, a wireless backhaul link 370 between base stations can use millimeter waves to carry information, or can use beamforming, precoding to be directed to a target base station. Similarly, a wireless access link 375 between a UE and a base station can use millimeter waves, or can be directed to a target wireless node (e.g., a UE or a base station). In this way, inter-link interference can be reduced.

[0046] In some aspects, the IAB network may support a multi-hop network or a multi-hop wireless backhaul. Additionally or alternatively, each node of the IAB network may use the same radio access technology (e.g., 5G / NR). Additionally or alternatively, the nodes of the IAB network may share resources such as time resources, frequency resources, and space resources for access links and backhaul links. In addition, various architectures of IAB nodes or IAB donors may be supported.

[0047] In some aspects, the IAB donor may include a central unit (CU) that configures IAB nodes that access a core network via the IAB donor, and may include a distributed unit (DU) that schedules and communicates with child nodes of the IAB donor.

[0048] In some aspects, the IAB node may include a mobile terminal component (MT) scheduled by and communicating with the DU of the parent node, and may include a DU that schedules and communicates with the child node of the IAB node. The DU of the IAB node may perform the functions described in conjunction with the base station 110 for the IAB node, and the MT of the IAB node may perform the functions described in conjunction with the UE 120 for the IAB node.

[0049] Figure 4 is a diagram illustrating an example of an IAB network architecture according to various aspects of the present disclosure. Figure 4 As shown, the IAB network may include an IAB donor 405 connected to the core network via a wired connection (e.g., as a wired optical fiber). For example, the Ng interface of the IAB donor 405 may terminate at the core network. Additionally or alternatively, the IAB donor 405 may be connected to one or more devices of the core network that provide a core access and mobility management function (AMF). In some aspects, the IAB donor 405 may include a base station 110, such as an anchor base station, as described above in conjunction with Figure 3 As shown in the figure, the IAB donor 405 may include a CU, which may perform AMF functions. The CU may configure the DU of the IAB donor 405, or may configure one or more IAB nodes 410 (e.g., MTs or DUs of the IAB nodes 410) connected to the core network via the IAB donor 405. Therefore, the CU of the IAB donor 405 may control or configure the entire IAB network connected to the core network via the IAB donor 405, such as by using a control message or a configuration message (e.g., a radio resource control (RRC) configuration message, an F1 application protocol (F1AP) message).

[0050] As described above, the IAB network may include an IAB node 410 (shown as IAB nodes 1 to 4) connected to the core network via an IAB donor 405. As shown, the IAB node 410 may include an MT and may include a DU. The MT of an IAB node 410 (e.g., a child node) may be controlled or scheduled by another IAB node 410 (e.g., a parent node) or by an IAB donor 405. The DU of an IAB node 410 (e.g., a parent node) may control or schedule other IAB nodes 410 (e.g., a child node of a parent node) or a UE 120. Therefore, the DU may be referred to as a scheduling node or a scheduling component, and the MT may be referred to as a scheduled node or a scheduled component. In some aspects, the IAB donor 405 may include a DU without including an MT. That is, the IAB donor 405 may configure, control or schedule the communication of an IAB node 410 or a UE 120. The UE 120 may include only an MT without including a DU. That is, the communication of UE 120 may be controlled or scheduled by IAB donor 405 or IAB node 410 (eg, a parent node of UE 120).

[0051] According to some aspects, certain nodes may be configured to participate in the control / scheduling process. For example, in some aspects, when a first node controls or schedules communication for a second node (e.g., when a first node provides a DU function for an MT of a second node), the first node may be referred to as the parent node of the second node, and the second node may be referred to as the child node of the first node. The child node of the second node may be referred to as the grandchild node of the first node. Therefore, the DU of the parent node may control or schedule communication for the child node 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. The communication of the MT of the child node may be controlled or scheduled by the parent node of the child node.

[0052] like Figure 4 As further shown in FIG. 4 , the links between UE 120 and IAB donor 405 or between UE 120 and IAB node 410 may be referred to as access links 415. Each access link 415 may be a wireless access link that provides UE 120 with wireless access to the core network via IAB donor 405 and potentially via one or more IAB nodes 410.

[0053] like Figure 4As further shown in FIG. 4 , the link between the IAB donor 405 and the IAB node 410 or between two IAB nodes 410 may be referred to as a backhaul link 420. Each backhaul link 420 may be a wireless backhaul link that provides wireless access to the core network to the IAB node 410 via the IAB donor 405 and potentially via one or more other intermediate IAB nodes 410. In some aspects, the backhaul link 420 may be a primary backhaul link or an auxiliary backhaul link (e.g., a backup backhaul link). In some aspects, the auxiliary backhaul link may be used if the primary backhaul link fails, becomes congested, or becomes overloaded. In the IAB network, network resources (e.g., time resources, frequency resources, space resources) for wireless communication may be shared between the access link 415 and the backhaul link 420.

[0054] As described above, in a typical IAB network, the IAB nodes (e.g., non-anchor base stations) are stationary (i.e., non-mobile). The goal of the next generation (5G) wireless network is to provide ultra-high data rates and support a wide range of application scenarios. In 3GPP, the integrated access and backhaul (IAB) system has been studied as a possible solution to help support these goals.

[0055] As mentioned above, in IAB, a wireless backhaul solution is adopted to connect cells (IAB nodes) to the core network (which uses wired backhaul). Some attractive features of IAB are support for multi-hop wireless backhaul, sharing of the same technology (e.g., NR) and resources (e.g., frequency band) for both access and backhaul links.

[0056] There are various possible architectures for IAB nodes, including Layer 2 (L2) and Layer 3 (L3) solutions, and the specific architecture deployed may depend on what layers of the protocol stack are implemented in the intermediate node (IAB node), for example, an L2 relay may implement the PHY / MAC / RLC layers.

[0057] As described herein, an IAB donor may be an enhanced gNB node having functionality to control an IAB network. A CU may refer to a central entity that controls the entire IAB network through configuration. A CU has RRC / PDCP layer functionality. A DU may be a scheduling node that schedules child nodes of the IAB donor. A DU has RLC / MAC / PHY layer functionality. An IAB node is an L2 relay node consisting of MT and DU functionality, as described herein. An MT is a scheduled node, similar to a UE scheduled by its parent IAB node or an IAB donor. A DU is a scheduling node that schedules child nodes of the IAB node.

[0058] In some implementations, beamforming can be used to improve communication efficiency. When beamforming is implemented, an array of antennas can be directed to send radio signals in a specific direction. An antenna array using beamforming sends / receives a relatively strong beam of signals in a specific direction. To implement beamforming, each antenna element can be provided with a separate signal to be transmitted. The phase and amplitude of each signal can be controlled so that the signals transmitted by the antenna elements add constructively and destructively so that they focus the signal into a narrow beam or lobe.

[0059] Example Techniques for Autonomous Beam Configuration Changes

[0060] Certain aspects of the present disclosure relate to autonomous configuration of beamforming. For example, a wireless node may determine a beamforming configuration to be used for communication based on a mode of communication and rules configured at the wireless node. For example, a UE / MT may determine that a full-duplex mode or a half-duplex mode is to be used for a particular communication, and automatically (e.g., without having to receive a configuration from a network entity) determine the beamforming configuration to be used for the communication. In certain aspects, the configured rules may map candidate communication modes to beamforming configurations to be used, or may indicate priorities associated with different communications, and the priorities may be considered in determining the beamforming configuration to be used, as described in more detail herein.

[0061] In New Radio (NR), the beam / precoding used by a user equipment (UE) (or an integrated access and backhaul (IAB)-node mobile terminal (MT)) for downlink (DL) reception (RX) or uplink (UL) transmission (TX) can be explicitly controlled by a base station (e.g., a gNB) (or any parent node). For DL, the beam / precoding can be configured via a transmission configuration indicator (TCI) that can be sent by the base station (BS) to the UE. For example, for a physical downlink shared channel (PDSCH), the demodulation reference signal (DMRS) for the PDSCH and the PDSCH itself can use the same precoding. Downlink control information (DCI) can be used to indicate the TCI state. For example, the TCI can indicate that the UE uses one of M configured states, M being an integer greater than 1. The TCI can indicate a quasi-co-location (QCL) relationship between the DMRS (e.g., a DMRS port group) of the PDSCH and some other signaling (such as a channel state information (CSI)-reference signal (RS) or a synchronization signal block (SSB)). If the properties of one signal (e.g., DMRS) can be inferred from the properties of another signal (e.g., CSI-RS or SSB), the signals may be quasi-co-located. If the scheduling offset between the physical downlink control channel (PDCCH) and the PDSCH is less than N slots (N is an integer greater than 1), the same TCI state as that used for DCI may be used for the PDSCH.

[0062] For PDCCH, QCL can be configured for each control resource set (CORESET). In NR, CORESET generally refers to a set of physical resources and parameters that can be used for the communication of PDCCH / DCI. With TCI state configuration, radio resource control (RRC) can be used to configure multiple TCI states for each CORESET at the UE. Then, the medium access control (MAC)-control element (CE) can be used to indicate which TCI state is activated by sending an index associated with the TCI state to be activated. If QCL is not configured, in some implementations, it can be assumed that the CORESET is QCL with the SSB.

[0063] For UL, spatial relation information for PUCCH may be indicated (e.g., via spatialRelationInfo parameter). For example, the BS may indicate whether PUCCH is QCL with SSB, CSI-RS, or sounding reference signal (SRS). For PUSCH, the DMRS for PUSCH and PUSCH itself may use the same precoding.

[0064] In some cases, codebook-based precoding may be implemented. For example, the DCI may be used to provide precoding information and antenna ports (e.g., antenna ports for configured SRS) via an SRS resource indicator (SRI). For non-codebook-based implementations, the PUSCH may use the same precoding device used for the configured SRS (e.g., as indicated via the SRI).

[0065] In some cases, there may be multiple TX / RX beam candidates for communication between a UE / MT and its serving gNB / parent node. In some scenarios, the active TX / RX beams may change frequently. Therefore, having to send new indications to change the beamforming configuration (such as TCI status, SRI, or spatial relationship information) may be wasteful and result in increased communication latency because the new configuration must be sent by the BS and received, processed, and adopted by the UE. Certain aspects of the present disclosure provide techniques for autonomously changing the beamforming configuration based on various communication modes.

[0066] Figure 5A-5D Communication using full-duplex and half-duplex modes is shown. Figure 5A As shown, there may be multiple paths 506, 508 between UE / MT 502 and service node 504. For example, path 508 may be stronger than path 506. Figure 5B As shown, half-duplex mode (eg, UL Tx only) may be used to implement UL Tx from UE / MT 502 to serving node 504 via Tx beam 510. Figure 5C As shown, DL Rx from the serving node 504 to the UE / MT 502 via the Rx beam 512 may be implemented using half-duplex mode (eg, DL Rx only).

[0067] The UE / MT may be full-duplex capable and in some cases may simultaneously transmit to and receive from the serving gNB / parent node. Figure 5D As shown, full-duplex mode can be used to simultaneously perform UL Tx via Tx beam 510 and DL Rx via Rx beam 514. As used herein, simultaneous communication generally refers to communication that is at least partially overlapped in the time domain. When the UE / MT communicates with the serving node in half-duplex mode (e.g., TX only or RX only), the UE / MT may use different TX / RX beams than when the UE / MT communicates in full-duplex mode. In certain aspects of the present disclosure, various operating modes for communicating using half-duplex and full-duplex modes may be considered for autonomous adjustment of beam / TCI states.

[0068] In some cases, when full-duplex communications are used, the beam may be modified due to null forming. Null forming generally refers to adjusting the beam shape to suppress some of the side lobes associated with the communication to prevent (or at least reduce) interference.

[0069] Fig. 6A , Figure 6B , Figure 6C A communication protocol using zero point formation is shown. Figure 6B As shown, the service node 504 may send a signal to the UE / MT 502, which may be received via the Rx beam 612. Fig. 6A As shown, UE / MT 502 may transmit a signal to serving node 504 via beam 604. In this case, the signal from side lobe 606 may be reflected from object 602 (e.g., a wall) back to UE / MT 502. For example, the reflection from object 602 may interfere with another antenna array of UE / MT 502. Figure 6C As shown, one antenna array of the UE / MT may be used to transmit signals to the service node 504, while another antenna array may be used to receive signals from the service node. As described herein, signals from the side lobe 606 may reflect from the object 602 and interfere with the other antenna array used for reception by the UE / MT 502. In other words, the reflections may be received via the Rx side lobe 608. Therefore, null formation may be used to suppress the side lobes 606, 608 to reduce interference (e.g., reduce the transmit power via the side lobe 606 and the receive gain via the side lobe 608).

[0070] Fig. 7A, Figure 7B , Figure 7C , Fig.7D 1 shows different operation modes of an IAB node 702. The IAB node 702 may communicate on a backhaul (BH) link (e.g., toward its parent node) and a child link (e.g., toward its child nodes) at the same time. For example, the MTs and DUs of the IAB node 702 may be receiving signals from the parent node 704 and the child nodes 706, 708, such as Fig. 7A As shown, or may be sending signals to the parent node 704 and the child nodes 706, 708, such as Figure 7B As shown. Figure 7C As shown, the MT of the IAB node 702 may be sending signals to the parent node 704, and the DU of the IAB node 702 may be receiving signals from the child nodes 706, 708. Fig.7D As shown, the MT of the IAB node 702 may be receiving signals from the parent node 704, and the DU of the IAB node 702 may be transmitting signals to the child nodes 706, 708. The selection of the correct beam to be used for communication on the BH link may depend on whether the IAB node is performing simultaneous communication on its child links, and if it is performing simultaneous communication, on the use of the beams in performing the communication. Fig. 7A -D described above. In certain aspects of the present disclosure, the UE / MT may select a mode based on the Fig. 7A -D describes one of the modes to automatically adopt a beamforming configuration.

[0071] Figure 8A-8D Different operation modes of UE / MT 802 are shown. The UE / MT can be connected to two cells / parent nodes 804, 806 in the same frequency band and support simultaneous communication with two serving nodes. Fig. 8A As shown, MT 802 may be receiving signals from two parent nodes 804, 806. Figure 8B As shown, MT 802 may be sending signals to two parent nodes 804, 806. Figure 8C As shown, MT 802 may be sending signals to parent node 804 and receiving signals from parent node 806, or Fig.8D As shown, MT 802 may be receiving signals from parent node 804 and transmitting signals to parent node 806. According to certain aspects of the present disclosure, depending on the scheduling and operation mode for signaling, the selection of beams that may be used for signaling may be different and automatically adopted by the UE / MT.

[0072] In certain aspects of the present disclosure, UE / MT and its scheduling node (e.g., parent node) may employ beamforming for their communications. Each node (or at least one of them) may determine the communication mode individually. Based on the determined communication mode and preconfigured rules, each node (or at least one of them) may adjust its beamforming configuration for upcoming TX / RX, as described in more detail herein.

[0073] Fig. 9 900 for wireless communications in accordance with certain aspects of the present disclosure. Operations 900 may be performed, for example, by a wireless node such as a UE (e.g., UE 120a (e.g., UE / MT) in wireless communication network 100) or a BS (e.g., BS 110a in wireless communication network 100).

[0074] Operation 900 may be implemented as a processor on one or more processors (e.g., Figure 2 The controller / processor 240 or Figure 2 In addition, the communication may be performed, for example, via one or more antennas (e.g., Figure 2 Antenna 234 or Figure 2 The antenna 252 of the controller 250 can be used to transmit and receive signals. In some aspects, the transmission and / or reception of signals can be implemented via a bus interface that obtains and / or outputs signals of one or more processors (e.g., controller / processor 240 or controller / processor 280).

[0075] Operations 900 may begin with the wireless node determining a communication mode to be used for communications by the wireless node at block 905. The determination at block 905 may include determining whether the communication is associated with multiple simultaneous communications with one or more other wireless nodes.

[0076] At block 910, the wireless node determines a beamforming configuration to use for communication based on the communication mode. In some aspects, the beamforming configuration may also be determined based on rules configured at the wireless node (also referred to herein as preconfigured rules). In certain aspects, operation 900 may also include adjusting a previous beamforming configuration based on the determined beamforming configuration to use for communication.

[0077] At block 915, the wireless node communicates according to the communication mode using the beamforming configuration. For example, the wireless node may transmit control information or data using the beamforming configuration.

[0078] In certain aspects, determining the communication mode may include determining whether the communication includes one of a single or multiple simultaneous communications with one or more other wireless nodes using the same frequency band. In other words, the communication may include a single simultaneous communication (e.g., receiving and transmitting) with a single wireless node. For example, the UE / MT may determine to communicate with its parent node in half-duplex or full-duplex mode (e.g., as described with respect to FIG. Figure 5D or Figure 6C described).

[0079] In certain aspects, the UE / MT may determine the communication mode based on any one of the parameters of the received scheduling (e.g., semi-static scheduling or dynamic scheduling), time division duplex (TDD) configuration or time slot format or any other configuration. For example, the UE / MT may be semi-statically configured to receive a DL channel (e.g., a physical downlink control channel (PDCCH)). On some overlapping resources, the UE / MT may then be scheduled (e.g., dynamically, such as via downlink control information (DCI)) to send an UL signal / channel. Therefore, in order to support communications using overlapping resources, upon receiving a configuration (e.g., via DCI) for scheduling an UL signal or channel, the default beam for PDCCH monitoring may be changed autonomously and temporarily. In other words, the UE may automatically adjust the beam to be used based on a new operating mode configured to support communications using overlapping resources, rather than receiving signaling from a parent node to configure a new beam. The change in the beam may be temporary to support communications using overlapping resources, and may be automatically restored to the previous beam after the communication.

[0080] In certain aspects, determining the communication mode may include determining whether the communication includes multiple simultaneous communications with multiple other wireless nodes using the same frequency band. For example, the UE / MT may communicate with two parent nodes simultaneously in the same frequency band (e.g., as described with respect to Figure 8A-8D 802). The UE / MT or parent node may determine the communication mode based on the resources allocated for the communication, the scheduling or configuration for the communication (e.g., which may be shared between them), or any combination thereof. For example, there may be a first set of resources allocated exclusively to the parent node 804 (e.g., not available to the parent node 806) and a second set of resources allocated to the two parent nodes 804, 806 for communication with the UE / MT 802 (e.g., simultaneous communication with the UE / MT 802). As determined based on the type of allocated resources, a different beam may be used for the first communication with the parent node 804 than for the second communication with the two parent nodes 804, 806.

[0081] In some implementations, the beam to be used may also depend on the type of simultaneous communications being used, such as spatial division multiplexing (SDM)-RX, SDM-TX, full duplex TX and RX (e.g., TX to parent node 804 and RX from parent node 806), or full duplex RX and TX (e.g., RX from parent node 804 and TX to parent node 806). For example, the type of simultaneous communications may include simultaneous transmissions to one or more other wireless nodes (e.g., Figure 7B ), simultaneously receiving from one or more other wireless nodes (e.g., Fig. 7A ), or simultaneous transmission to a first subset of one or more other wireless nodes and simultaneous reception from a second subset of one or more other wireless nodes (e.g., as shown in Figure 7C or Fig.7D ). In some cases, at least one of the other wireless nodes may be common to both the first subset and the second subset. For example, the wireless node may be part of both the first subset and the second subset of wireless nodes. In some cases, all wireless nodes in the first subset may be part of the second subset of wireless nodes.

[0082] As described herein, an IAB node may communicate with a parent node and its child nodes simultaneously in the same frequency band, as described with respect to Figure 7A-7D Described. An IAB node or a parent node may determine a communication mode based on resources allocated for communication, a schedule (e.g., a scheduling grant) or a configuration (e.g., a time slot format configuration) for communication, or any combination thereof. Some of the configuration, resources, or scheduling may be shared between an IAB node and a parent node. There may be a first set of resources specifically allocated to the parent node 704 (e.g., not available for the IAB node 702) and a second set of resources allocated to both the parent node 704 and the IAB node 702 (e.g., for simultaneous communication with both the parent node 704 and the child node by the IAB node). As determined based on the type of allocated resources, a different beam may be used for a first communication with a parent node using a first resource compared to a second communication using a second resource. Determining the beam to be used may also depend on the type of synchronous communication being used (SDM-RX, SDM-TX, full-duplex TX and RX, full-duplex RX and TX).

[0083] As described herein, the beamforming configuration can be adjusted based on preconfigured rules. For example, different beam sets (e.g., TCI, SRI, precoding matrix, spatial relationship information) can be configured and associated with different communication modes. Different beam sets and their association with operating modes can be configured via RRC signaling, MAC-CE, DCI, or any combination thereof. In one example, and in the case of simultaneous communications, one communication may have a higher priority than another communication, and changes to the beamforming configuration may be applied only to communications with lower priority (e.g., one communication with the lowest priority in the simultaneous communications). This can reduce the impact on higher priority communications. For example, if UL transmission has a higher priority than DL reception, the beam used for UL transmission can be adjusted without adjusting the beam used for DL ​​reception so that DL reception does not affect the higher priority UL transmission.

[0084] In some aspects, priority may be defined based on the type of communication or signal. For example, priority may be defined based on whether the communication is used for ultra-reliable low-latency communication (URLLC) and enhanced mobile broadband (eMBB). In other words, URLLC may have a higher priority than eMBB communication. Therefore, the beam used for eMBB communication can be automatically adjusted by the UE / MT to reduce interference to URLLC. Priority may be defined based on the use of different channels and signal types that may have different priorities. For example, priority may be defined based on whether the communication is used for PDCCH, PDSCH, PUCCH, PUSCH, SRS, Scheduling Request (SR), SSB or CSI-RS.

[0085] In certain aspects, priorities may be defined based on the type of nodes involved in the communication. For example, a parent node may have a higher priority than an IAB node. Priorities may be defined based on the scheduling mode used to schedule a particular communication. For example, a communication scheduled using dynamic scheduling (e.g., via DCI) may have a higher priority than a semi-static scheduling (e.g., via RRC signaling).

[0086] In some aspects, priorities may be defined based on resource types. For example, priorities may be set based on whether flexible resources (e.g., resources that can be used for DL ​​or UL) are used or resources that are designated for one of UL and DL communications, or whether resources are soft resources or hard resources. In the configured transmission direction, hard resources may be used for IAB nodes without the IAB nodes having to consider the impact on the corresponding MT resources. In contrast to hard resources, soft resources may be used only when they do not affect the ability of the MT to send or receive according to its configuration and scheduling. In some cases, priorities may be defined based on communication directions, as described herein. For example, UL signaling may have a higher priority than DL signaling.

[0087] Fig.10 A communication device 1000 is shown, which may include a processor configured to perform operations for the techniques disclosed herein (such as Fig. 9 1000 includes various components (e.g., corresponding to means plus functional components) for the operations shown. The communication device 1000 includes a processing system 1002 coupled to a transceiver 1008 (e.g., a transmitter and / or a receiver). The transceiver 1008 is configured to send and receive signals for the communication device 1000 via an antenna 1010, such as the various signals described herein. The processing system 1002 can be configured to perform processing functions for the communication device 1000, including processing signals received and / or to be transmitted by the communication device 1000.

[0088] The processing system 1002 includes a processor 1004 coupled to a computer readable medium / memory 1012 via a bus 1006. In some aspects, the computer readable medium / memory 1012 is configured to store instructions (e.g., computer executable code) that, when executed by the processor 1004, cause the processor 1004 to perform Fig. 9 The operations shown or other operations for performing various techniques for configuring beamforming discussed herein. In some aspects, the computer-readable medium / memory 1012 stores: code 1014 (e.g., an example of a unit) for determining; code 1016 (e.g., an example of a unit) for communicating (e.g., sending or receiving); and optionally, code 1017 (e.g., an example of a unit) for adjusting. In some aspects, the processor 1004 has circuitry configured to implement the code stored in the computer-readable medium / memory 1012.

[0089] In some aspects, processor 1004 has circuitry configured to implement code stored in computer readable medium / memory 1012. Processor 1004 includes circuitry 1018 for determining (e.g., an example of a means); circuitry 1020 for communicating (e.g., an example of a means); and optionally, circuitry 1022 for adjusting (e.g., an example of a means).

[0090] The transceiver 1008 may provide a means for receiving information such as packets, user data, or control information associated with various information channels (e.g., control channels, data channels, etc.). The information may be communicated to other components of the device 1000. The transceiver 1008 may be a reference Figure 2 Examples of various aspects of the transceiver 254 are described. Antenna 1010 may correspond to a single antenna or a collection of antennas. Transceiver 1008 may provide a means for transmitting signals generated by other components of device 1000.

[0091] The configuration managers 112, 122 may support wireless communications according to examples as disclosed herein. The configuration managers 112, 122 may be examples of units for performing various aspects described herein. The configuration managers 112, 122 or their subcomponents may be implemented in hardware (e.g., in a control signaling management circuit). The circuit may include a processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described in the present disclosure.

[0092] In another implementation, the configuration managers 112, 122 or their subcomponents may be implemented in code executed by a processor (e.g., as control signaling management software or firmware) or any combination thereof. If implemented in code executed by a processor, the functions of the configuration managers 112, 122 or their subcomponents may be performed by a general purpose processor, DSP, ASIC, FPGA, or other programmable logic device.

[0093] In some examples, the configuration managers 112 , 122 may be configured to perform various operations (eg, receive, transmit, monitor, generate) using or otherwise cooperating with the transceiver 1008 .

[0094] Configuration managers 112, 122, or their subcomponents, may be physically located in a variety of locations, including being distributed so that portions of functionality are implemented by one or more physical components at different physical locations. In some examples, according to various aspects of the present disclosure, configuration managers 112, 122, or their subcomponents may be separate and distinct components. In some examples, according to various aspects of the present disclosure, configuration managers 112, 122, or their subcomponents may be combined with one or more other hardware components (including, but not limited to, input / output (I / O) components, a transceiver, a network server, another computing device, one or more other components described in the present disclosure, or a combination thereof).

[0095] Example aspects

[0096] Aspect 1. A method for wireless communication by a wireless node, comprising: determining a communication mode to be used for communication by the wireless node, wherein the determination of the communication mode includes determining whether the communication is associated with multiple simultaneous communications with one or more other wireless nodes; determining a beamforming configuration to be used for the communication based on the communication mode; and using the beamforming configuration to communicate according to the communication mode.

[0097] Aspect 2. The method according to aspect 1 further includes: adjusting a previous beamforming configuration based on the determined beamforming configuration to be used for the communication.

[0098] Aspect 3. A method according to any one of aspects 1-2, wherein the determining the communication mode comprises: determining whether the communication includes the multiple simultaneous communications with the one or more other wireless nodes using the same frequency band.

[0099] Aspect 4. A method according to any one of Aspects 1-3, wherein the determination of the communication mode is based on at least one of the following: allocated resources for the communication, received scheduling permission for the communication, a time slot format configuration for the communication, or any combination thereof.

[0100] Aspect 5. The method according to any one of Aspects 1-4, wherein determining the communication mode comprises: determining one of a full-duplex communication mode or a half-duplex communication mode.

[0101] Aspect 6. The method according to any one of aspects 1-5, wherein determining the communication mode comprises: determining that the communication includes the multiple simultaneous communications.

[0102] Aspect 7. The method according to aspect 6, wherein determining the communication mode comprises determining that the communication comprises the plurality of simultaneous communications with the plurality of other wireless nodes using the same frequency band.

[0103] Aspect 8. The method according to aspect 7, wherein the plurality of other wireless nodes are parent nodes of the wireless node.

[0104] Aspect 9. The method according to any one of aspects 7-8, wherein the plurality of other wireless nodes are parent nodes of the wireless node and child nodes of the wireless node.

[0105] Aspect 10. The method according to any one of aspects 6-9, wherein the determination of the beamforming configuration is also based on the types of the multiple simultaneous communications.

[0106] Aspect 11. The method of aspect 10, wherein the types of the plurality of simultaneous communications include simultaneous transmissions to the one or more other wireless nodes.

[0107] Aspect 12. The method according to any one of aspects 10-11, wherein the types of the multiple simultaneous communications include simultaneous reception from the one or more other wireless nodes.

[0108] Aspect 13. A method according to any one of aspects 10-12, wherein the types of the multiple simultaneous communications include simultaneous transmissions to a first subset of the multiple other wireless nodes and simultaneous receptions from a second subset of the multiple other wireless nodes.

[0109] Aspect 14. The method of aspect 13, wherein at least one of the plurality of other wireless nodes is common to both the first subset and the second subset.

[0110] Aspect 15. A method according to any one of Aspects 6-14, wherein the beamforming configuration is also determined based on a rule configured at the wireless node, and wherein the rule indicates a priority associated with each of the multiple simultaneous communications.

[0111] Aspect 16. A method according to Aspect 15, wherein each of the multiple simultaneous communications is associated with a configuration for beamforming, and the method further includes: if one of the multiple simultaneous communications has the lowest priority among the priorities associated with the multiple simultaneous communications, then adjusting the configuration for beamforming associated with the one of the multiple simultaneous communications based on the determined beamforming configuration.

[0112] Aspect 17. The method according to any one of aspects 15-16, wherein the priority associated with each of the multiple simultaneous communications includes a priority associated with a type of each of the multiple simultaneous communications.

[0113] Aspect 18. A method according to any one of Aspects 15-17, wherein the multiple simultaneous communications are conducted with different nodes, and wherein the priority associated with each of the multiple simultaneous communications includes a priority associated with a type of the different nodes.

[0114] Aspect 19. A method according to any one of Aspects 15-18, wherein the priority associated with each of the multiple simultaneous communications includes a priority associated with a scheduling mode used to schedule each of the multiple simultaneous communications.

[0115] Aspect 20. A method according to any one of aspects 15-19, wherein the priority associated with each of the multiple simultaneous communications includes a priority associated with a type of resources used for each of the multiple simultaneous communications.

[0116] Aspect 21. A method according to any one of Aspects 15-20, wherein the priority associated with each of the multiple simultaneous communications includes a priority associated with whether each of the multiple simultaneous communications is a reception by the wireless node or a transmission from the wireless node.

[0117] Aspect 22. A method according to any one of Aspects 1-21, wherein the beamforming configuration is also determined based on rules configured at the wireless node, wherein the rules configured at the wireless node indicate a mapping of one or more beams to candidate communication modes, and the determined communication mode is one of the candidate communication modes.

[0118] Aspect 23. The method according to aspect 22 further includes: receiving an indication of the rule via radio resource control (RRC) signaling, medium access control (MAC)-control element (CE), downlink control information (DCI), or any combination thereof.

[0119] Aspect 24. A method according to any one of Aspects 1-23, wherein determining the beamforming configuration includes: determining at least one of a transmission configuration indicator (TCI), a precoding matrix, or spatial relationship information, or any combination thereof.

[0120] Aspect 25. A method according to any one of aspects 1-24, wherein the wireless node comprises an integrated access and backhaul (IAB) node.

[0121] Aspect 26: An apparatus comprising means for performing the method according to any one of aspects 1 to 25.

[0122] Aspect 27: An apparatus comprising at least one processor and a memory coupled to the at least one processor, the memory and the at least one processor being configured to perform the method according to any one of aspects 1 to 25.

[0123] Aspect 28: A computer-readable medium having stored thereon computer-executable code for wireless communication, the computer-executable code, when executed by at least one processor, causes an apparatus to perform a method according to any one of aspects 1 to 25.

[0124] The electromagnetic spectrum is typically subdivided into various categories, bands, channels, etc. based on frequency / wavelength. In 5G NR, two initial operating bands have been identified with the frequency range names FR1 (410 MHz–7.125 GHz) and FR2 (24.25 GHz–52.6 GHz). It should be understood that FR1 is often (interchangeably) referred to as the “sub-6 GHz” band in various documents and articles, even though a portion of FR1 is greater than 6 GHz. A similar naming issue sometimes arises with respect to FR2, which is often (interchangeably) referred to as the “millimeter wave” band in documents and articles, even though it is different from the extremely high frequency (EHF) band (30 GHz–300 GHz), which is identified as a “millimeter wave” band by the International Telecommunication Union (ITU).

[0125] Frequencies between FR1 and FR2 are generally referred to as mid-band frequencies. Recent 5G NR research has identified the operating band for these mid-band frequencies as the frequency range designation FR3 (7.125 GHz–24.25 GHz). 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 to mid-band frequencies. Additionally, higher frequency bands are currently being explored to extend 5G NR operation beyond 52.6 GHz. For example, three higher operating bands have been identified as the frequency range designations FR4-a 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 band.

[0126] In view of the above, unless otherwise specifically stated, it should be understood that if the term "sub-6 GHz" or the like is used herein, it can be broadly referred to as a frequency that can be less than 6 GHz, can be within FR1, or can include mid-band frequencies. In addition, unless otherwise specifically stated, it should be understood that if the term "millimeter wave" or the like is used herein, it can be broadly referred to as a frequency that can include mid-band frequencies, can be within FR2, FR4, FR4-a or FR4-1 and / or FR5, or can be within the EHF band.

[0127] The techniques described herein can be used for various wireless communication technologies, such as NR (e.g., 5G NR), 3GPP Long Term Evolution (LTE), Advanced LTE (LTE-A), Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single Carrier Frequency Division Multiple Access (SC FDMA), Time Division Synchronous Code Division Multiple Access (TD-SCDMA), and other networks. The terms "network" and "system" are often used interchangeably. A CDMA network can implement radio technologies such as Universal Terrestrial Radio Access (UTRA), cdma2000, etc. UTRA includes Wideband CDMA (WCDMA) and other variants of CDMA. cdma2000 covers IS-2000, IS-95, and IS-856 standards. A TDMA network can implement radio technologies such as Global System for Mobile Communications (GSM). OFDMA networks may implement radio technologies such as NR (e.g., 5G RA), Evolved UTRA (E-UTRA), Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, Flash-OFDMA, etc. UTRA and E-UTRA are part of Universal Mobile Telecommunications System (UMTS). LTE and LTE-A are versions of UMTS that use E-UTRA. UTRA, E-UTRA, UMTS, LTE, LTE-A, and GSM are described in documents from an organization named "3rd Generation Partnership Project" (3GPP). cdma2000 and UMB are described in documents from an organization named "3rd Generation Partnership Project 2" (3GPP2). NR is an emerging wireless communication technology that is being deployed.

[0128] In 3GPP, the term "cell" can refer to the coverage area of ​​a Node B (NB) and / or a NB subsystem serving the coverage area, depending on the context in which the term is used. In NR systems, the terms "cell" and BS, next-generation Node B (gNB or gNodeB), access point (AP), distributed unit (DU), carrier or transmit receive point (TRP) can be interchanged. BS can provide communication coverage for macro cells, pico cells, femto cells and / or other types of cells. Macro cells can cover a relatively large geographic area (e.g., a radius of several kilometers) and can allow unrestricted access by UEs with service subscriptions. Pico cells can cover relatively small geographic areas and can allow unrestricted access by UEs with service subscriptions. Femto cells can cover relatively small geographic areas (e.g., residential) and can allow restricted access by UEs associated with the femto cells (e.g., UEs in a closed subscriber group (CSG), UEs for users in residential areas, etc.). BSs for macro cells can be referred to as macro BSs. BSs for pico cells can be referred to as pico BSs. A BS for a femto cell may be called a femto BS or a home BS.

[0129] UE may also be referred to as a mobile station, a terminal, an access terminal, a subscriber unit, a station, a customer premises equipment (CPE), a cellular phone, 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 computer, a camera, a gaming device, a netbook, a smartbook, an ultrabook, an appliance, a medical device or medical apparatus, a biometric sensor / device, a wearable device (e.g., a smart watch, smart clothing, smart glasses, a smart wristband, smart jewelry (e.g., a smart ring, a smart bracelet, etc.)), an entertainment device (e.g., a music device, a video device, a satellite radio unit, etc.), a vehicle component or sensor, a smart meter / sensor, an industrial manufacturing device, a global positioning system device, or any other suitable device configured to communicate via a wireless or wired medium. Some UEs may be considered machine type communication (MTC) devices or evolved MTC (eMTC) devices. MTC and eMTC UEs include, for example, robots, drones, remote devices, sensors, meters, monitors, location tags, etc., which can communicate with a BS, another device (e.g., a remote device), or some other entity. A wireless node can provide, for example, a connection to a network (e.g., a wide area network such as the Internet or a cellular network) or to a network via a wired or wireless communication link. Some UEs can be considered Internet of Things (IoT) devices, which can be narrowband IoT (NB-IoT) devices.

[0130] In some examples, access to the air interface can be scheduled. The scheduling entity (e.g., BS) allocates resources for communication between some or all devices and apparatuses in its service area or cell. The scheduling entity may be responsible for scheduling, allocating, reconfiguring, and releasing resources for one or more subordinate entities. That is, for scheduled communications, the subordinate entity utilizes the resources allocated by the scheduling entity. The base station is not the only entity that can be used as a scheduling entity. In some examples, the UE may be used as a scheduling entity, and resources for one or more subordinate entities (e.g., one or more other UEs) may be scheduled, and other UEs may utilize the resources scheduled by the UE for wireless communication. In some examples, the UE may be used as a scheduling entity in a peer-to-peer (P2P) network or in a mesh network. In the mesh network example, in addition to communicating with the scheduling entity, the UEs may also communicate directly with each other.

[0131] The method disclosed herein includes one or more steps or actions for implementing the method. These method steps and / or actions may be interchangeable with each other without departing from the scope of the claims. In other words, unless a specific order of steps or actions is specified, the order and / or use of specific steps and / or actions may be modified without departing from the scope of the claims.

[0132] As used herein, a phrase referring to "at least one of" a list of items refers to any combination of those items, including single members. For example, "at least one of a, b, or c" is intended to cover any combination of a, b, c, ab, ac, bc, and abc, as well as multiples of the same element (e.g., aa, aaa, aab, aac, abb, acc, bb, bbb, bbc, cc, and ccc or any other ordering of a, b, and c).

[0133] As used herein, the term "determining" includes a wide variety of actions. For example, "determining" may include calculating, computing, processing, deriving, investigating, searching (e.g., searching in a table, a database, or another data structure), ascertaining, and the like. Furthermore, "determining" may include receiving (e.g., receiving information), accessing (e.g., accessing data in a memory), and the like. Furthermore, "determining" may include resolving, selecting, choosing, establishing, and the like.

[0134] The foregoing description is provided to enable any person skilled in the art to implement the various aspects described herein. Various modifications to these aspects will be apparent to those skilled in the art, and the general principles defined herein may be applied to other aspects. Therefore, the claims are not intended to be limited to the various aspects shown herein, but to conform to the full range consistent with the language expression of the claims, wherein unless otherwise specifically stated, reference to an element in the singular form is not intended to mean "one and only one", but "one or more". Unless otherwise explicitly stated, the term "some" refers to one or more. All structural and functional equivalents of the elements of the various aspects described throughout the present disclosure are expressly incorporated herein by reference, and are intended to be included by the claims, and these structural and functional equivalents are known or will be known to those skilled in the art. In addition, there is no disclosure herein that is intended to be dedicated to the public, regardless of whether such disclosure is explicitly recorded in the claims. No claim element is to be interpreted according to the provisions of 35 USC § 112, paragraph 6, unless the element is explicitly recorded using the phrase "unit for...", or in the case of a method claim, the element is recorded using the phrase "step for...".

[0135] The various operations of the methods described above may be performed by any suitable unit capable of performing the corresponding functions. These units may include various hardware and / or software components and / or modules, including but not limited to: circuits, application specific integrated circuits (ASICs) or processors. Typically, where there are operations shown in the figures, those operations may have corresponding paired units plus functional components with similar numbers.

[0136] The various illustrative logic blocks, modules, and circuits described in conjunction with the present disclosure may be implemented or performed using a general purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device (PLD), discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. The processor may be a microprocessor, but in the alternative, the processor may be any commercially available processor, controller, microcontroller, or state machine. The processor may also be implemented as a combination of computing devices, for example, a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration.

[0137] If implemented in hardware, an example hardware configuration may include a processing system in a wireless node. The processing system may be implemented using a bus architecture. Depending on the specific application and overall design constraints of the processing system, the bus may include any number of interconnecting buses and bridges. The bus may connect various circuits including a processor, a machine-readable medium, and a bus interface. In addition, the bus interface may also be used to connect a network adapter to the processing system via the bus. The network adapter may be used to implement the signal processing functions of the PHY layer. In a user terminal (see Figure 1 ), a user interface (e.g., a keypad, display, mouse, joystick, etc.) may also be connected to the bus. The bus may also connect various other circuits such as timing sources, peripherals, voltage regulators, power management circuits, etc., which are well known in the art and therefore will not be described further. The processor may be implemented using one or more general and / or special purpose processors. Examples include microprocessors, microcontrollers, DSP processors, and other circuits that can execute software. Those skilled in the art will recognize how to best implement the functionality described for the processing system depending on the specific application and the overall design constraints imposed on the entire system.

[0138] If implemented with software, the functions may be stored on or transmitted through a computer-readable medium as one or more instructions or codes. Whether referred to as software, firmware, middleware, microcode, hardware description language or other terms, software should be broadly interpreted as meaning instructions, data or any combination thereof. Computer-readable media include both computer storage media and communication media, and communication media include any media that helps to transfer a computer program from one place to another. The processor may be responsible for managing the bus and general processing, including executing software modules stored on a machine-readable storage medium. A computer-readable storage medium may be coupled to a processor so that the processor can read information from the storage medium and write information to the storage medium. In an alternative, the storage medium may be a component of the processor. For example, a machine-readable medium may include a transmission line, a carrier modulated by data, and / or a computer-readable storage medium having instructions stored thereon that is separated from a wireless node, all of which may be accessed by a processor through a bus interface. Alternatively or in addition, a machine-readable medium or any part thereof may be integrated into a processor, for example, the case may be a cache and / or a general register stack. For example, examples of machine-readable storage media may include RAM (random access memory), flash memory, ROM (read-only memory), PROM (programmable read-only memory), EPROM (erasable programmable read-only memory), EEPROM (electrically erasable programmable read-only memory), registers, magnetic disks, optical disks, hard drives, or any other suitable storage media, or any combination thereof. Machine-readable media may be embodied in a computer program product.

[0139] A software module may include a single instruction or many instructions, and may be distributed over several different code segments, distributed among different programs, and distributed across multiple storage media. A computer-readable medium may include multiple software modules. A software module includes instructions that, when executed by a device such as a processor, cause a processing system to perform various functions. A software module may include a sending module and a receiving module. Each software module may be located in a single storage device or distributed across multiple storage devices. For example, when a triggering event occurs, a software module may be loaded from a hard drive into a RAM. During the execution of a software module, a processor may load some of the instructions into a cache to increase access speed. Subsequently, one or more cache lines may be loaded into a general register stack for execution by a processor. It will be understood that when the function of a software module is mentioned below, this function is implemented by a processor when executing instructions from the software module.

[0140] Additionally, any connection is properly termed a computer-readable medium. For example, if the software is transmitted from a website, server or other remote source using a coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), or wireless technology (e.g., infrared (IR), radio and microwave), then the coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technology (e.g., infrared, radio and microwave) are included in the definition of medium. As used herein, disk and disc include compact disc (CD), laser disc, optical disc, digital versatile disc (DVD), floppy disk and Optical disks, where magnetic disks typically reproduce data magnetically, and optical disks use lasers to reproduce data optically. Thus, in some aspects, computer-readable media may include non-transitory computer-readable media (e.g., tangible media). Additionally, for other aspects, computer-readable media may include transitory computer-readable media (e.g., signals). Combinations of the above should also be included within the scope of computer-readable media.

[0141] Thus, some aspects may include a computer program product for performing the operations presented herein. For example, such a computer program product may include a computer-readable medium having instructions stored (and / or encoded) thereon, the instructions being executable by one or more processors to perform the operations described herein. For example, a computer program product for performing the operations described herein and Fig. 9 The operations shown in the instructions.

[0142] In addition, it should be understood that the modules and / or other appropriate units for performing the methods and techniques described herein can be downloaded and / or otherwise obtained by the user terminal and / or base station where applicable. For example, such a device can be coupled to a server to facilitate the transmission of units for performing the methods described herein. Alternatively, the various methods described herein can be provided via a storage unit (e.g., RAM, ROM, a physical storage medium such as a compact disc (CD) or a floppy disk, etc.) so that the user terminal and / or base station can obtain the various methods when the storage unit is coupled to or provided to the device. In addition, any other appropriate technology for providing the methods and techniques described herein to a device can be used.

[0143] It is to be understood that the claims are not limited to the precise configuration and components shown above. Various modifications, changes and variations may be made in the arrangement, operation and details of the methods and apparatus described above without departing from the scope of the claims.

Claims

1. A method for wireless communication by a wireless node, comprising: determining a communication mode to be used for communications by the wireless node, wherein the determination of the communication mode comprises determining whether the communication is associated with multiple simultaneous communications with one or more other wireless nodes; determining a beamforming configuration to be used for the communication based on the communication mode and a rule configured at the wireless node, wherein the rule indicates a mapping of one or more beams to the determined communication mode, and wherein an indication of the rule is received via one of radio resource control (RRC) signaling, medium access control (MAC)-control element (CE), downlink control information (DCI); and Communicating according to the determined communication mode is performed using the beamforming configuration.

2. The method according to claim 1, further comprising: A previous beamforming configuration is adjusted based on the determined beamforming configuration to be used for the communication.

3. The method according to claim 1, wherein: The determining the communication mode further comprises determining whether the communications include the plurality of simultaneous communications with the one or more other wireless nodes using the same frequency band.

4. The method according to claim 1, wherein: The determining the communication mode is based on at least one of: allocated resources for the communication, a received scheduling grant for the communication, a slot format configuration for the communication, or any combination thereof.

5. The method according to claim 1, wherein: The determining the communication mode further includes: determining one of a full-duplex communication mode or a half-duplex communication mode.

6. The method according to claim 1, wherein: The determining the communication mode further comprises determining that the communication comprises the plurality of simultaneous communications.

7. The method according to claim 6, wherein: The determining the communication mode further comprises determining that the communication comprises the plurality of simultaneous communications with the plurality of other wireless nodes using a same frequency band.

8. The method according to claim 7, wherein: The plurality of other wireless nodes are parent nodes of the wireless node.

9. The method according to claim 7, wherein: The plurality of other wireless nodes include a parent node of the wireless node and child nodes of the wireless node.

10. The method according to claim 6, wherein: The determination of the beamforming configuration is also based on a type of the plurality of simultaneous communications.

11. The method according to claim 10, wherein: The types of the plurality of simultaneous communications include simultaneous transmissions to the one or more other wireless nodes.

12. The method according to claim 10, wherein: The types of the plurality of simultaneous communications include simultaneous reception from the one or more other wireless nodes.

13. The method according to claim 10, wherein: The types of the plurality of simultaneous communications include simultaneous transmissions to a first subset of the plurality of other wireless nodes and simultaneous receptions from a second subset of the plurality of other wireless nodes.

14. The method according to claim 13, wherein: At least one of the plurality of other wireless nodes is common to both the first subset and the second subset.

15. The method according to claim 6, wherein: The beamforming configuration is also determined based on a rule configured at the wireless node, and wherein the rule indicates a priority associated with each of the plurality of simultaneous communications.

16. The method of claim 15, wherein: Each simultaneous communication of the plurality of simultaneous communications is associated with a configuration for beamforming; as well as The method also includes adjusting a beamforming configuration associated with the one of the plurality of simultaneous communications based on the determined beamforming configuration if the one of the plurality of simultaneous communications has a lowest priority among the priorities associated with the plurality of simultaneous communications.

17. The method according to claim 15, wherein: The priority associated with each of the plurality of simultaneous communications includes a priority associated with a type of each of the plurality of simultaneous communications.

18. The method according to claim 15, wherein: The plurality of simultaneous communications are with different nodes, and wherein the priority associated with each of the plurality of simultaneous communications comprises a priority associated with a type of the different nodes.

19. The method according to claim 15, wherein: The priority associated with each of the plurality of simultaneous communications includes a priority associated with a scheduling mode used to schedule each of the plurality of simultaneous communications.

20. The method according to claim 15, wherein: The priority associated with each of the plurality of simultaneous communications includes a priority associated with a type of resources used for each of the plurality of simultaneous communications.

21. The method according to claim 15, wherein: The priority associated with each of the plurality of simultaneous communications includes a priority associated with whether each of the plurality of simultaneous communications is a reception by the wireless node or a transmission from the wireless node.

22. The method of claim 1, further comprising: An indication of the rule is received via the medium access control (MAC)-control element (CE).

23. The method according to claim 1, wherein: The determining the beamforming configuration includes determining at least one of a transmission configuration indicator (TCI), a precoding matrix, or spatial relationship information, or any combination thereof.

24. The method according to claim 1, wherein: The wireless node comprises an integrated access and backhaul (IAB) node.

25. An apparatus for wireless communication by a wireless node, comprising: Memory; as well as a processor coupled to the memory, wherein the processor is configured to: determining a communication mode to be used for communications by the wireless node, wherein the processor is further configured to: determine the communication mode by determining whether the communications include multiple simultaneous communications with one or more other wireless nodes; determining a beamforming configuration to be used for the communication based on the communication mode and a rule configured at the wireless node, wherein the rule indicates a mapping of one or more beams to the determined communication mode, and wherein an indication of the rule is received via one of radio resource control (RRC) signaling, medium access control (MAC)-control element (CE), downlink control information (DCI); and Communicating according to the determined communication mode is performed using the beamforming configuration.

26. The apparatus of claim 25, the processor further configured to adjust a previous beamforming configuration based on the determined beamforming configuration to be used for the communication.

27. The device according to claim 25, wherein: The processor is further configured to determine the communication mode includes determining whether the communication includes the plurality of simultaneous communications with the one or more other wireless nodes using the same frequency band.

28. The device according to claim 25, wherein The processor is further configured to determine the communication mode comprises determining the communication mode based on at least one of: allocated resources for the communication, a received scheduling grant for the communication, a slot format configuration for the communication, or any combination thereof.

29. The device according to claim 25, wherein: The processor is further configured to determine the communication mode includes determining one of a full-duplex communication mode or a half-duplex communication mode.

30. The device according to claim 25, wherein: The processor is further configured to determine the communication mode includes determining that the communication includes the plurality of simultaneous communications.

31. The device according to claim 30, wherein The processor is further configured to determine that the communication mode includes determining that the communication includes the plurality of simultaneous communications with the plurality of other wireless nodes using a same frequency band.

32. The device according to claim 31, wherein The plurality of other wireless nodes are parent nodes of the wireless node.

33. The device according to claim 31, wherein The plurality of other wireless nodes include a parent node of the wireless node and child nodes of the wireless node.

34. The apparatus of claim 30, the processor further configured to determine the beamforming configuration based on a type of the plurality of simultaneous communications.

35. The device according to claim 34, wherein The types of the plurality of simultaneous communications include simultaneous transmissions to the one or more other wireless nodes.

36. The device according to claim 34, wherein The types of the plurality of simultaneous communications include simultaneous reception from the one or more other wireless nodes.

37. The device according to claim 34, wherein: The types of the plurality of simultaneous communications include simultaneous transmissions to a first subset of the plurality of other wireless nodes and simultaneous receptions from a second subset of the plurality of other wireless nodes.

38. The device according to claim 37, wherein At least one of the plurality of other wireless nodes is common to both the first subset and the second subset.

39. The device according to claim 30, wherein: The processor is further configured to determine the beamforming configuration based on a rule configured at the wireless node, and wherein the rule indicates a priority associated with each of the plurality of simultaneous communications.

40. The apparatus of claim 39, wherein: Each simultaneous communication of the plurality of simultaneous communications is associated with a configuration for beamforming; and The processor is further configured to adjust a beamforming configuration associated with one of the plurality of simultaneous communications based on the determined beamforming configuration if the one of the plurality of simultaneous communications has a lowest priority among the priorities associated with the plurality of simultaneous communications.

41. The apparatus of claim 39, wherein: The priority associated with each of the plurality of simultaneous communications includes a priority associated with a type of each of the plurality of simultaneous communications.

42. The apparatus of claim 39, wherein: The plurality of simultaneous communications are with different nodes, and wherein the priority associated with each of the plurality of simultaneous communications comprises a priority associated with a type of the different nodes.

43. The apparatus of claim 39, wherein: The priority associated with each of the plurality of simultaneous communications includes a priority associated with a scheduling mode used to schedule each of the plurality of simultaneous communications.

44. The apparatus of claim 39, wherein: The priority associated with each of the plurality of simultaneous communications includes a priority associated with a type of resources used for each of the plurality of simultaneous communications.

45. The apparatus of claim 39, wherein: The priority associated with each of the plurality of simultaneous communications includes a priority associated with whether each of the plurality of simultaneous communications is a reception by the wireless node or a transmission from the wireless node.

46. ​​The apparatus of claim 25, the processor further configured to receive an indication of the rule via the medium access control (MAC)-control element (CE).

47. The apparatus of claim 25, wherein: The processor is further configured to determine the beamforming configuration comprises determining at least one of a transmission configuration indicator (TCI), a precoding matrix, or spatial relationship information, or any combination thereof.

48. The apparatus of claim 25, wherein: The wireless node comprises an integrated access and backhaul (IAB) node.

49. An apparatus for wireless communication by a wireless node, comprising: means for determining a communication mode to be used for communications by the wireless node, wherein the means for determining the communication mode to be used for communications by the wireless node comprises means for determining whether the communications include multiple simultaneous communications with one or more other wireless nodes; means for determining a beamforming configuration to be used for the communication based on the communication mode and a rule configured at the wireless node, wherein the rule indicates a mapping of one or more beams to the determined communication mode, and wherein an indication of the rule is received via one of radio resource control (RRC) signaling, medium access control (MAC)-control element (CE), downlink control information (DCI); and Means for communicating according to the determined communication mode using the beamforming configuration.

50. A non-transitory computer readable medium having stored thereon instructions for causing a wireless node to: determining a communication mode to be used for communications by the wireless node, wherein: The instructions further cause the wireless node to: determine the communication mode by determining whether the communication includes multiple simultaneous communications with one or more other wireless nodes; determining a beamforming configuration to be used for the communication based on the communication mode and a rule configured at the wireless node, wherein the rule indicates a mapping of one or more beams to the determined communication mode, and wherein an indication of the rule is received via one of radio resource control (RRC) signaling, medium access control (MAC)-control element (CE), downlink control information (DCI); and Communicating according to the determined communication mode is performed using the beamforming configuration.

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