Synchronization Signal Block (SSB) configuration for power management

Abstract

Various aspects of the present disclosure provide techniques for performing interference measurements based on priority values ​​in a network, such as an integrated access and backhaul (IAB) network. An example method generally includes determining at least one configuration for communicating one or more synchronization signal blocks (SSBs) between a first wireless node, a second wireless node, or both wireless nodes based on a priority level associated with the first wireless node, each of the second wireless node, or both wireless nodes, wherein the at least one configuration includes information that enables the first wireless node or the second wireless node to manage interference with communications. In some aspects, the method may also include transmitting the at least one configuration to at least one of the first wireless node or the second wireless node.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to U.S. Application No. 17 / 104,080, filed on November 25, 2020, which claims the benefit of and priority to U.S. Provisional Application No. 62 / 955,262, filed on December 30, 2019, both of which are assigned to the assignee of this application and are hereby expressly incorporated herein by reference as if fully set forth below and for all applicable purposes.

[0003] introduction

[0004] Aspects of the present disclosure relate to wireless communications and, more particularly, to techniques for power management in an Integrated Access and Backhaul (IAB) network or other types of networks.

[0005] 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 Third Generation Partnership Project (3GPP) Long Term Evolution (LTE) systems, LTE-Advanced (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 just a few.

[0006] In some examples, a wireless multiple access communication system may include several base stations (BS), each of which is capable of supporting communication of multiple communication devices (also referred to as user equipment (UE)) simultaneously. In an LTE or LTE-A network, a set of one or more base stations may define an evolved B node (eNB). In other examples (e.g., in a next generation, new radio (NR), or 5G network), a wireless multiple access communication system may include several distributed units (DUs) (e.g., edge units (EUs), edge nodes (ENs), radio heads (RHs), smart radio heads (SRHs), transmission reception points (TRPs), etc.) in communication with several central units (CUs) (e.g., central nodes (CNs), access node controllers (ANCs), etc.), wherein a set of one or more DUs in communication with a CU may define an access node (e.g., which may be referred to as a BS, a next generation B node (gNB or g B node), a TRP, etc.). A BS or DU may communicate with a set of UEs on a downlink channel (e.g., for transmission from a BS or DU to a UE) and an uplink channel (e.g., for transmission from a UE to a BS or DU).

[0007] These multiple access technologies have been adopted in various telecommunication standards to provide common protocols that enable different wireless devices to communicate at city, country, region, and even global levels. New radio (e.g., 5G NR) is an example of an emerging telecommunication standard. NR is an enhancement set of the LTE mobile standard promulgated by 3GPP. NR is designed to better support mobile broadband Internet access by using OFDMA with cyclic prefix (CP) on downlink (DL) and uplink (UL) to improve spectrum efficiency, reduce costs, improve services, utilize new spectrum, and better integrate with other open standards. To this end, NR supports beamforming, multiple-input multiple-output (MIMO) antenna technology, and carrier aggregation.

[0008] As the demand for mobile broadband access continues to grow, further improvements to NR and LTE technologies remain useful. Preferably, these improvements should be applicable to other multiple access technologies and the telecommunication standards that employ them.

[0009] Overview

[0010] 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 in the appended claims, 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 communication between wireless communication devices.

[0011] Certain aspects provide a method for wireless communication. The method generally includes: determining at least one configuration for communicating one or more synchronization signal blocks (SSBs) between a first wireless node, a second wireless node, or both wireless nodes based on a priority level associated with each of the first wireless node and the second wireless node, each of the first wireless node and the second wireless node being configured to serve one or more subnodes, wherein the at least one configuration includes information that enables the first wireless node or the second wireless node to manage interference to communications; and transmitting the at least one configuration to at least one of the first wireless node or the second wireless node.

[0012] Certain aspects provide a method for wireless communication. The method generally includes: receiving at a first wireless node at least one configuration for communicating one or more synchronization signal blocks (SSBs) between the first wireless node and a second wireless node, each of the first wireless node and the second wireless node being configured to serve one or more subnodes; and managing interference to communications via the one or more SSBs based on at least one priority level associated with the first wireless node, the second wireless node, or both, the communications being conducted by the first wireless node or the second wireless node.

[0013] Certain aspects provide an apparatus for wireless communication. The apparatus generally includes: a processing system configured to: determine at least one configuration for communicating one or more synchronization signal blocks (SSBs) between a first wireless node, a second wireless node, or both wireless nodes based on a priority level associated with the first wireless node, each of the second wireless node being configured to serve one or more subnodes, wherein the at least one configuration includes information that enables the first wireless node or the second wireless node to manage interference to the communication; and a transmitter configured to: transmit the at least one configuration to at least one of the first wireless node or the second wireless node.

[0014] Certain aspects provide an apparatus for wireless communication. The apparatus generally includes: a receiver configured to: receive at a first wireless node at least one configuration for communicating one or more synchronization signal blocks (SSBs) between the first wireless node and a second wireless node, each of the first wireless node and the second wireless node being configured to serve one or more subnodes; and a processing system configured to: manage interference to communications via the one or more SSBs based on at least one priority level associated with the first wireless node, the second wireless node, or both, the communications being conducted by the first wireless node or the second wireless node.

[0015] Certain aspects provide an apparatus for wireless communication. The apparatus generally includes: means for determining at least one configuration for communicating one or more synchronization signal blocks (SSBs) between a first wireless node, a second wireless node, or both wireless nodes based on a priority level associated with each of the first wireless node and the second wireless node, each of the first wireless node and the second wireless node being configured to serve one or more subnodes, wherein the at least one configuration includes information that enables the first wireless node or the second wireless node to manage interference to communications; and means for transmitting the at least one configuration to at least one of the first wireless node or the second wireless node.

[0016] Certain aspects provide an apparatus for wireless communication. The apparatus generally includes: means for receiving at a first wireless node at least one configuration for communicating one or more synchronization signal blocks (SSBs) between the first wireless node and a second wireless node, each of the first wireless node and the second wireless node being configured to serve one or more subnodes; and means for managing interference to communications via the one or more SSBs based on at least one priority level associated with the first wireless node, the second wireless node, or both, the communications being conducted by the first wireless node or the second wireless node.

[0017] Certain aspects provide a computer-readable medium having instructions stored thereon that cause one or more processors to: determine at least one configuration for communicating one or more synchronization signal blocks (SSBs) between a first wireless node, a second wireless node, or both of the first wireless node and the second wireless node based on a priority level associated with the first wireless node, each of the second wireless node being configured to serve one or more subnodes, wherein the at least one configuration includes information that enables the first wireless node or the second wireless node to manage interference with communications; and transmit the at least one configuration to at least one of the first wireless node or the second wireless node.

[0018] Certain aspects provide a computer-readable medium having instructions stored thereon that cause one or more processors to: receive at a first wireless node at least one configuration for communicating one or more synchronization signal blocks (SSBs) between the first wireless node and a second wireless node, each of the first wireless node and the second wireless node being configured to serve one or more subnodes; and manage interference to communications via the one or more SSBs based on at least one priority level associated with the first wireless node, the second wireless node, or both, the communications being conducted by the first wireless node or the second wireless node.

[0019] To achieve the foregoing and related ends, the 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 the one or more aspects. However, these features are only indicative of several of the various ways in which the principles of the various aspects can be employed. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to understand in detail the manner in which the above-stated features of the present disclosure are used, a more particular description of the content briefly summarized above may be made with reference to various aspects, some of which are illustrated in the accompanying drawings. It should be noted, however, that the accompanying drawings illustrate only certain typical aspects of the present disclosure and are not to be considered limiting of its scope, as the description may admit to other equally effective aspects.

[0022] Figure 1 is a block diagram conceptually illustrating an example telecommunications system in accordance with certain aspects of the present disclosure.

[0023] 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.

[0024] Figure 3 is a diagram illustrating an example of a radio access network in accordance with various aspects of the present disclosure.

[0025] 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.

[0026] Figure 5A and 5B Inter-node discovery for an IAB network is illustrated in accordance with certain aspects of the present disclosure.

[0027] Fig. 6A , 6B , 6C illustrate various communication systems showing different interference scenarios.

[0028] Figure 7 Flowcharts illustrating example operations for wireless communications in accordance with various aspects of the present disclosure are illustrated.

[0029] Figure 8 Flowcharts illustrating example operations for wireless communications in accordance with various aspects of the present disclosure are illustrated.

[0030] Fig. 9 Various synchronization signal blocks (SSBs) opportunities configured for transmission and measurement based on a priority level of an IAB node are illustrated in accordance with certain aspects of the present disclosure.

[0031] Fig.10 Illustrated are communications devices that may include various components configured to perform operations for the techniques disclosed herein in accordance with aspects of the present disclosure.

[0032] 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 in other aspects without specific recitation.

[0033] Detailed Description

[0034] Various aspects of the present disclosure provide techniques for power management of an integrated access and backhaul (IAB) network. The power management techniques may be implemented using configurations for measuring and transmitting synchronization signal blocks (SSBs). For example, a central unit (CU) of the IAB network may configure a high priority IAB node to transmit SSBs more frequently and configure a low priority IAB node to measure SSBs more frequently to increase the likelihood that the low priority IAB node will discover the high priority IAB node. Once a high priority IAB node is discovered, interference management actions may be taken to mitigate interference to the high priority node.

[0035] The following description provides examples rather than 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 scope of the present disclosure. Various examples may appropriately omit, replace, or add various procedures or components. For example, the described method may be performed in an order different from the order described, and various steps may be added, omitted, or combined. Moreover, the features described with reference to some examples may be combined in some other examples. For example, any number of aspects set forth herein may be used to implement a device or practice method. In addition, the scope of the present disclosure is intended to cover such devices or methods practiced using other structures, functionality, or structures and functionality as supplements to the various aspects of the present disclosure set forth herein or in addition. It should be understood that any aspect of the present disclosure disclosed herein may be implemented by one or more elements of the claims. The wording "exemplary" is used herein to mean "used as an example, instance, or explanation". Any aspect described as "exemplary" herein is not necessarily to be interpreted as being superior to or superior to other aspects.

[0036] In general, 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 radio technology, air interface, etc. Frequency may also be referred to as carrier, subcarrier, frequency channel, frequency modulation, subband, etc. Each frequency may support a single RAT in a given geographic area to avoid interference between wireless networks of different RATs. In some cases, a 5G NR RAT network may be deployed.

[0037] Figure 1 An example wireless communication network 100 is illustrated in which aspects of the present disclosure may be performed. For example, the network 100 may include a network configured to perform Figure 7 The IAB node (implemented as UE 120 or BS 110) of operation 700 is configured to perform Figure 8 8. A network entity (eg, BS 110) of operation 800 may be configured to perform the following operations:

[0038] like Figure 1As illustrated in , the wireless communication network 100 may include several base stations (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 particular geographic area (sometimes referred to as a "cell"), which may be stationary or mobile depending on the location of mobile BS 110. In some examples, BS 110 may be interconnected to each other and / or to one or more other BSs or network nodes (not shown) in the wireless communication network 100 via various types of backhaul interfaces (e.g., direct physical connections, wireless connections, virtual networks, etc.) using any suitable transport network. Figure 1 In the example shown in , 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 a pico cell 102x. BSs 110y and 110z may be femto BSs for femto cells 102y and 102z, respectively. The BS may support one or more cells. BS 110 communicates with user equipment (UE) 120a-y (each also individually referred to herein as UE 120 or collectively referred to 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 stationary or mobile.

[0039] The wireless communication network 100 may also include a relay station (e.g., relay station 110r) (also referred to as a relay, etc.), which 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 the relay station relays transmissions between UEs 120 to facilitate communication between the devices.

[0040] A network controller 130 may couple to a set of BSs 110 and provide coordination and control for the BSs 110. The network controller 130 may communicate with the BSs 110 via a backhaul. The BSs 110 may also communicate with each other (eg, directly or indirectly) via a wireless or wired backhaul.

[0041] Figure 2 BS 110 and UE 120 (eg, in Figure 11. For example, antenna 252, processors 266, 258, 264, and / or controller / processor 280 of UE 120, and / or antenna 234, processors 220, 230, 238, and / or controller / processor 240 of BS 110 may be used to perform the various techniques and methods described herein.

[0042] It should be noted that although Figure 2 UE 120 is illustrated as communicating with BS 110, but an IAB node may similarly communicate with a parent IAB node (or other network entity) and each may (eg, respectively) have a plurality of IAB nodes as described with reference to FIG. Figure 2 In other words, the IAB node may have similar components as the UE 120 and may be configured to perform Figure 8 The operation 800 of , and the CU may have similar components as the BS 110 and may be configured to perform Figure 7 Operation 700.

[0043] At BS 110, transmit processor 220 may receive data from data source 212 and control information from controller / processor 240. The control information may be for a physical broadcast channel (PBCH), a physical control format indicator channel (PCFICH), a physical hybrid automatic repeat request (HARQ) indicator channel (PHICH), a physical downlink control channel (PDCCH), a group common PDCCH (GC PDCCH), etc. The data may be for a physical downlink shared channel (PDSCH), etc. The processor 220 may process (e.g., encode and symbol map) the data and the control information to obtain data symbols and control symbols, respectively. The transmit processor 220 may also generate reference symbols (such as for a primary synchronization signal (PSS), a secondary synchronization signal (SSS), and a cell-specific reference signal (CRS)). 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, where applicable, and may provide an output symbol stream to modulators (MODs) 232a-232t. Each modulator 232 may process a respective 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. The downlink signals from modulators 232a-232t may be transmitted via antennas 234a-234t, respectively.

[0044] At UE 120, antennas 252a-252r may receive downlink signals from BS 110 or parent IAB nodes, or child IAB nodes may receive downlink signals from parent IAB nodes, and may provide received signals to demodulators (DEMOD) 254a-254r, respectively. Each demodulator 254 may condition (e.g., filter, amplify, downconvert, and digitize) the respective received signals to obtain input samples. Each demodulator 254 may further process the input samples (e.g., for OFDM, etc.) to obtain received symbols. MIMO detector 256 may obtain received symbols from all demodulators 254a-254r, perform MIMO detection on these received symbols where applicable, and provide detected symbols. Receive processor 258 may process (e.g., demodulate, deinterleave, and decode) these detected symbols, provide decoded data for UE 120 to data sink 260, and provide decoded control information to controller / processor 280. One or more of the antenna 252 , the demodulator 254 , the MIMO detector 256 , the receive processor 258 , the transmit processor 264 , the TX MIMO processor 266 , etc. may be components within a transceiver of the UE 120 .

[0045] On the uplink, at the UE 120 or the child IAB node, the transmit processor 264 may receive and process data from the data source 262 (e.g., data for a physical uplink shared channel (PUSCH) or PSSCH) and control information from the controller / processor 280 (e.g., control information for a physical uplink control channel (PUCCH) or PSCCH). The transmit processor 264 may also generate reference symbols for reference signals (e.g., sounding reference signals (SRS)). The symbols from the transmit processor 264 may be precoded by the TX MIMO processor 266, where applicable, further processed by the demodulators in the transceivers 254a-254r (e.g., for SC-FDM, etc.), and transmitted to the base station 110 or the parent IAB node.

[0046] At BS 110 or a parent IAB node, uplink signals from UE 120 may be received by antenna 234, processed by modulator 232, detected by MIMO detector 236 where applicable, and further processed by receive processor 238 to obtain decoded data and control information sent by UE 120. Receive processor 238 may provide decoded data to data sink 239 and decoded control information to controller / processor 240. One or more of antenna 234, demodulator 232, TX MIMO processor 230, transmit processor 220, MIMO detector 236, receive processor 238, etc. may be components within a transceiver of BS 110.

[0047] Controllers / processors 240 and 280 may direct the operations at BS 110 and UE 120, respectively. Controller / processor 240 and / or other processors and modules at BS 110 may perform or direct the execution of various processes for the techniques described herein. Controller / processor 280 and / or other processors and modules at UE 120 may perform or direct the execution of various processes for the techniques described herein. Memories 242, 282 may store data and program codes for BS 110 and UE 120, respectively. Scheduler 244 may schedule UEs for data transmission on the downlink and / or uplink.

[0048] Figure 3 is a diagram illustrating an example of a radio access network in accordance with various aspects of the present disclosure.

[0049] As shown by reference numeral 305, a conventional (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. Figure 1 Similarly, Figure 3 The UE 320 shown in FIG. 3 may correspond to Figure 1 UE 120 is shown in FIG.

[0050] As shown by 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 these 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, which is 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 traffic from / to an anchor point 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).

[0051] 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(s) 335 or the non-anchor base station(s) 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. Figure 1 Similarly, Figure 3 The UE 355 shown in FIG. 3 may correspond to Figure 1 UE 120 is shown in FIG.

[0052] As shown by reference numeral 365, in some aspects, a radio access network including an IAB network may utilize a variety of spectrum types. For example, an IAB network may utilize a variety of different radio frequency bands. In some specific examples and according to some aspects, millimeter wave technology or directional communication may be used for (e.g., beamforming, precoding) communication 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 may use millimeter waves to carry information, or may use beamforming, precoding to point to a target base station. Similarly, a wireless access link 375 between a UE and a base station may use millimeter waves, or may point to a target wireless node (e.g., a UE or a base station). In this way, inter-link interference may be reduced.

[0053] 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, each node of the IAB network may share resources for access links and backhaul links, such as time resources, frequency resources, and space resources. In addition, various architectures of IAB nodes or IAB donors may be supported.

[0054] In some aspects, an 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.

[0055] In some aspects, the IAB node may include a mobile terminating component (MT) that is scheduled by and communicates with the DU of the parent node; and may include a DU that schedules and communicates with the child nodes of the IAB node. The DU of the IAB node may perform the functions described for the IAB node in conjunction with the base station 110, and the MT of the IAB node may perform the functions described for the IAB node in conjunction with the UE 120.

[0056] 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 in , the IAB network may include an IAB donor 405, which is 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 described above in conjunction with Figure 3 Anchor base station described. As shown in the figure, the IAB donor 405 may include a CU that can perform an ANC function or an AMF function. The CU may configure the DU of the IAB donor 405, or may configure one or more IAB nodes 410 (e.g., MT or DU of the IAB node 410) connected to the core network via the IAB donor 405. Thus, 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).

[0057] As described above, the IAB network may include IAB nodes 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 the parent node) or a UE 120. Thus, 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 an MT. That is, the IAB donor 405 may configure, control or schedule the communication of the IAB node 410 or the UE 120. The UE 120 may include only an MT without a DU. That is, the communication of the UE 120 may be controlled or scheduled by the IAB donor 405 or the IAB node 410 (eg, a parent node of the UE 120).

[0058] 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 the first node provides DU functionality for the MT of the 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. Thus, 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.

[0059] like Figure 4 As further shown in FIG. 4 , the link between UE 120 and IAB donor 405 or between UE 120 and IAB node 410 may be referred to as an access link 415. Each access link 415 may be a wireless access link that provides UE 120 with radio access to a core network via IAB donor 405 and potentially via one or more IAB nodes 410.

[0060] like Figure 4 As 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 radio access to the core network to the IAB node 410 via the IAB donor 405 and potentially via one or more other intervening IAB nodes 410. In some aspects, the backhaul link 420 may be a primary backhaul link or a secondary backhaul link (e.g., a backup backhaul link). In some aspects, if the primary backhaul link fails, becomes congested, or becomes overloaded, the secondary backhaul link may be used. In the IAB network, network resources (e.g., time resources, frequency resources, space resources) for wireless communications may be shared between the access link 415 and the backhaul link 420.

[0061] As described above, in a typical IAB network, the IAB nodes (e.g., non-anchor base stations) are stationary (i.e., do not move). Next generation (5G) wireless networks have stated the goal of providing ultra-high data rates and supporting a wide range of application scenarios. Integrated access and backhaul (IAB) systems have been studied in 3GPP as a possible solution to help support these goals.

[0062] As mentioned above, in IAB, a wireless backhaul solution is adopted to connect the cellular cells (IAB nodes) to the core network (which uses wired backhaul). Some attractive features of IAB are support for multi-hop wireless backhaul, sharing the same technology (e.g., NR) and resources (e.g., frequency band) for both access and backhaul links.

[0063] There are various possible architectures for IAB nodes, including Layer 2 (L2) and Layer 3 (L3) solutions, and the specific architecture deployed may depend on which layers of the protocol stack are implemented in the intermediary node (IAB node), for example, an L2 relay may implement the PHY / MAC / RLC layers.

[0064] As described herein, an IAB donor may be an enhanced gNB node having the functionality of controlling 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 that includes MT and DU functionality, as described herein. An MT is a scheduled node similar to a UE that is scheduled by its parent IAB node or an IAB donor. A DU is a scheduling node that schedules child nodes of the IAB node.

[0065] Example Power Management Priority Handling in Integrated Access and Backhaul

[0066] Certain aspects of the present disclosure relate to power management (PM) techniques for handling interference in an integrated access and backhaul (IAB) network. For example, a central unit (CU) of an IAB network may configure transmissions and measurements of SSBs to increase the likelihood that a lower priority node will discover a higher priority node, thereby allowing the lower priority node to take actions to reduce interference to the higher priority node. In some cases, the configuration performed by the CU allows a node to infer the priority level of itself or other nodes. The priority level allows a node to determine what actions to perform for interference management, as described in more detail herein.

[0067] Figure 5A and 5BInter-node discovery for an IAB network according to certain aspects of the present disclosure is illustrated. The IAB network may be managed by a CU 540. As illustrated, an IAB donor DU 504 may serve IAB nodes 508, 510, and an IAB donor DU 506 may serve an IAB node 512. As illustrated, an IAB node 512 may transmit SSBs 514, 516, 518 for initial access (e.g., of one or more UEs). The DU of the IAB node 512 may also transmit SSBs 520, 522 for inter-node discovery. For example, an MT of the IAB node 510 may discover the IAB node 512 by detecting the SSB 520. IAB node discovery may be performed for potential future handovers (HO) or for establishing redundant links. The SSBs sent by the IAB node 512 for inter-node discovery should not affect UEs that may attempt to initially access a base station via the DU of the IAB node 512.

[0068] The IAB node 510 has its own communications with a parent node (e.g., IAB donor DU 504) and a child node (e.g., UE 530 or IAB node 532). The IAB node 510 may be actively transmitting, and due to half-duplex constraints that may apply to the IAB node 510 (e.g., cannot receive and transmit at the same time), the IAB node 510 may not be able to discover the SSB transmitted from the IAB node 512.

[0069] like Figure 5B , CU 540 may indicate an SSB transmission configuration (STC) to IAB node 512 and an SSB measurement time configuration (SMTC) (also referred to herein as SSB measurement configuration (SMC)) to IAB node 510 to facilitate transmission and measurement of SSBs for inter-node discovery. For example, IAB node 510 may be an attacker (e.g., causing interference to IAB node 512), and IAB node 512 may have a higher priority level than IAB node 510 (e.g., attacker). The SSB for inter-node discovery transmitted by IAB node 512 may indicate the priority level of IAB node 512. Thus, IAB node 510 may determine the priority level of IAB node 512 when discovering IAB node 512. In certain aspects, CU 540 may configure more frequent STC windows at IAB node 512 and more frequent SMTC windows at IAB node 510 to enable IAB node 510 to detect the priority level of IAB node 512 with a higher probability, thereby allowing IAB node 510 to take appropriate measures for interference management.

[0070] Fig. 6A , 6B6C illustrate various communication systems showing different interference scenarios in an IAB network. In some aspects, an IAB node (e.g., an MT of an IAB node) may perform signal measurements and may not have to rely on measurements done by a UE. An IAB node has L2 functionality, so any L3 measurements performed by a UE may be reported to the CU due to the split of CU and DU, as described herein.

[0071] like Fig. 6A As illustrated in FIG. 6 , a mobile IAB node 602 (e.g., an IAB node on a vehicle) may be serving a UE 604. The mobile IAB node 602 may transmit to the UE 604, causing interference to a UE 606 served by a stationary IAB node 608. Similarly, transmissions by the IAB node 608 to the UE 606 may cause interference to the UE 604 served by the mobile IAB node 602. In this case, the mobile IAB node 602 causing interference to the stationary IAB node 608 may reduce downlink (DL) transmit power to the UE 604 to reduce interference.

[0072] In over-provisioned networks or zero network planning scenarios, such as Figure 6B As explained in , multiple IAB nodes may have overlapping coverage, thereby causing interference to each other. Figure 6B , both UE 604 and UE 606 are in overlapping coverage areas and have overlapping coverage from both IAB node 680 and IAB node 682. Therefore, a tiebreaking rule may be used to determine which IAB node may reduce its DL transmit power, as described in more detail herein.

[0073] Figure 6C 6. As illustrated, an IAB donor 620 may serve IAB nodes 622, 624, IAB node 624 may serve UE 630, and IAB node 622 may serve sub-IAB nodes 626, 628. Transmissions from IAB node 624 to UE 630 may cause interference to sub-IAB node 628. In addition, transmissions from IAB node 622 to sub-IAB node 628 may cause interference to UE 630. In certain implementations, an IAB node may determine to reduce its transmit power to reduce interference to another node. For example, in such a scenario, IAB node 624 may yield to IAB node 622 and reduce DL transmit power to UE 630. Backhaul (BH) links to sub-IAB nodes 626, 628 may take precedence over access links between IAB node 624 and UE 630. Furthermore, the IAB node 622 has a higher load and thus may be prioritized for power management.

[0074] In certain implementations, if the IAB node determines that the current configuration increases excessive interference to a victim node of a higher PM priority level, the IAB node may modify the TX configuration of its DU or its child MT / UE. If the IAB node determines that the aggressor IAB node has a lower priority level, the IAB node may send an indication of excessive interference to the aggressor node or CU. In some cases, if the IAB nodes have equal priority levels, the interfering IAB node may follow a tie-breaking rule.

[0075] In certain aspects of the present disclosure, the CU may appropriately configure the SMTC and / or STC so that the inter-node discovery procedure can be used to implement interference measurement and / or mitigation. In the context of STC configuration, an IAB node may refer to an IAB node (e.g., IAB node 510 or 512) and an IAB donor DU (e.g., IAB donor DU 504). As used herein, an SMTC configuration may include various parameters, such as an SSB center frequency (e.g., a center frequency associated with transmitting one or more SSBs), an SSB subcarrier spacing (e.g., an SSB subcarrier spacing associated with transmitting the one or more SSBs), an SMTC window periodicity (e.g., measurements occur every period T corresponding to the SMTC window periodicity), an SMTC window timing offset (e.g., a timing offset from a reference time point), an SMTC window duration (e.g., the duration of the window during which measurements are performed), a list of one or more physical cell IDs to be measured, a list of the one or more SSBs to be measured, or any combination thereof.

[0076] In some cases, multiple SMTCs may be configured for each IAB node, as described in more detail herein. The STC configuration may include various parameters, such as an SSB center frequency, an SSB subcarrier spacing, an SSB transmission periodicity (e.g., a periodicity associated with transmitting the one or more SSBs), an SSB transmission timing offset, an index of an SSB to be transmitted (e.g., at least one index associated with the one or more SSBs to be transmitted), or any combination thereof. In certain aspects, multiple STCs may be configured for each IAB node, as described in more detail herein. The STC configuration may vary by cell or frequency location per DU.

[0077] Figure 7 is a flow diagram illustrating example operations 700 for wireless communications in accordance with certain aspects of the present disclosure. Operations 700 may be performed by a central unit, such as CU 540.

[0078] Operation 700 may be implemented as a processor on one or more processors (e.g., Figure 2In addition, the signal transmission and reception performed by the first wireless communication device in operation 700 may be performed by one or more antennas (e.g., Figure 2 In some aspects, signal transmission and / or reception by the first wireless communication device may be achieved by obtaining and / or outputting signals via a bus interface of one or more processors (e.g., controllers / processors 230, 220, 238, 240, and 244).

[0079] Operation 700 may begin at block 705 with the CU determining at least one configuration for communicating one or more SSBs between the first wireless node and the second wireless node based on a priority level associated with each or both of the first wireless node (e.g., the first IAB node), the second wireless node (e.g., the second IAB node), and each of the first wireless node and the second wireless node being configured to serve one or more subnodes. In some aspects, the at least one configuration may include information that enables the first wireless node or the second wireless node to manage interference to the communication. For example, the information implementing interference management in the at least one configuration may include information related to the following: the periodicity of transmitting or measuring one or more SSBs, the duration or number of at least one window for measuring or transmitting the one or more SSBs, the number of the one or more SSBs to be transmitted or measured, or any combination thereof. In some aspects, the information implementing interference management may include an SSB measurement time configuration (SMTC) or an SSB transmission configuration (STC), as described in more detail herein. In block 710, the CU may transmit the at least one configuration to at least one of the first wireless node or the second wireless node.

[0080] In some aspects, a CU may be based on an IAB node (e.g., reference Figure 7 The CU may set the SMTC and / or STC to increase the possibility of discovering a high-priority IAB node (e.g., the second wireless node), thereby allowing other wireless nodes (e.g., the first wireless node) to take actions to mitigate interference to the high-priority IAB node.

[0081] In some aspects, if the priority level of the second wireless node is greater than the priority level of the first wireless node, then Figure 7 The at least one configuration (e.g., information to implement interference management) determined at block 705 of can indicate a cell identifier (ID) to be measured by the first wireless node based on the one or more SSBs, the cell ID being associated with the second wireless node. In other words, the CU can indicate a cell ID to be measured that is associated with a higher priority level IAB node (e.g., referenced to Figure 7 A list of physical cell IDs associated with the second wireless node described.

[0082] In some aspects, if the priority level of the second wireless node is greater than the priority level of the first wireless node, then Figure 7 The at least one configuration (e.g., STC and / or SMTC) determined at block 705 of may indicate to the first wireless node to measure the one or more SSBs transmitted by the second wireless node. For example, the CU may indicate in the SMTC configuration the SSBs to be measured that correspond to SSBs transmitted by an IAB node of a higher priority level (e.g., the second wireless node).

[0083] In some respects, Figure 7 The at least one configuration (e.g., STC) determined at block 705 of (e.g., information to implement interference management) may configure the periodicity of transmitting the one or more SSBs by the first wireless node based on a strategy that decreases as the priority level associated with the first wireless node increases. For example, the CU may reduce the SSB transmission periodicity in the STC configuration of the IAB node as the priority level of the IAB node increases, and vice versa. In some cases, the at least one configuration (e.g., SMTC) may configure the periodicity of measuring the one or more SSBs by the second wireless node based on a strategy that decreases as the priority level associated with the second wireless node decreases.

[0084] In other words, as the priority level of the first wireless node increases, the STC window periodicity configured for the first wireless node may decrease (e.g., the first wireless node may transmit SSB more frequently). On the other hand, as the priority level of the second wireless node decreases, the SMTC window periodicity configured for the second wireless node may decrease (e.g., the second wireless node may measure SSB more frequently). That is, the CU may increase the SMTC window periodicity of the IAB node as the priority level of the IAB node increases, and vice versa.

[0085] In some aspects, if the second wireless node has a higher priority level than the first wireless node, then Figure 7 The at least one configuration (e.g., SMTC) determined at block 705 of (e.g., information to implement interference management) may align a window for measuring the one or more SSBs by the first wireless node with a window for transmitting the one or more SSBs by the second wireless node. On the other hand, if the priority level of the second wireless node is lower than that of the first wireless node, the at least one configuration (e.g., SMTC) may set the window for measuring the one or more SSBs by the first wireless node and the window for transmitting the one or more SSBs by the second wireless node to be non-overlapping.

[0086] In some aspects, if the second wireless node has a higher priority level than the first wireless node, then Figure 7 The at least one configuration (e.g., SMTC) determined at box 705 (e.g., information to implement interference management) may set the configuration for measuring the one or more SSBs by the first wireless node to be equal to the configuration for transmitting the one or more SSBs by the second wireless node. For example, the CU may select an SMTC window timing offset (e.g., a timing offset associated with transmitting the one or more SSBs), an SSB center frequency (e.g., a center frequency associated with the one or more SSBs), and an SSB subcarrier spacing (e.g., a subcarrier spacing associated with the one or more SSBs) to align the SMTC window with the STC window of another node (e.g., the second wireless node) of a higher priority level, or select the SMTC window to be non-overlapping with the STC window of another node of a lower PM priority level. For STC, the CU may match the SSB center frequency and SSB subcarrier spacing in the STC of a higher priority node to the SSB to be measured based on the SMTC with a lower priority level, thereby increasing the likelihood that the lower priority node will discover the higher priority node. In certain aspects, the CU may select an SSB transmission timing offset to align the STC window of a higher priority node with the SMTC window of another node of a lower priority level, or select the STC window of a lower priority node to be non-overlapping with the SMTC window of another node of a higher priority level.

[0087] In certain aspects, the at least one configuration (e.g., information to implement interference management) may configure the duration of a window for measuring the one or more SSBs by the first wireless node based on a strategy where the duration of the window decreases as the priority level associated with the first wireless node increases. That is, the CU may decrease the SMTC window duration as the priority level increases, and vice versa.

[0088] In some respects, Figure 7 The at least one configuration (e.g., information to implement interference management) determined at block 705 of may set the number of one or more SSBs to be transmitted by the second wireless node during a time unit (e.g., a half-frame) based on a strategy that increases as the priority level of the second wireless node increases. For example, the CU may indicate the index of the SSB to be transmitted in the STC configuration. The CU may increase the number of SSBs to be transmitted by the IAB node in a half-frame as the priority level of the IAB node increases, and vice versa.

[0089] In some cases, Figure 7The at least one configuration (e.g., SMTC) determined at box 705 (e.g., information to implement interference management) may be based on the following strategy to set the number of one or more windows for measuring the one or more SSBs by the first wireless node: the number decreases as the priority level of the first wireless node increases. Similarly, the at least one configuration (e.g., STC) may be based on the following strategy to set the number of one or more windows for transmitting the one or more SSBs by the second wireless node: the number increases as the priority level of the second wireless node increases. In other words, the CU may reduce the number of SMTC windows of the IAB node as the priority level of the IAB node increases, and vice versa. The CU may increase the number of STC windows of the IAB node as the priority level of the IAB node increases, and vice versa.

[0090] In some implementations, the IAB node may receive multiple STC or SMTC configurations. Each configuration may be independent of the priority level of the IAB node. In some aspects, the IAB node may have multiple priority levels (e.g., corresponding to transmissions on different resources). The IAB node may receive one or more STC or SMTC configurations, each of which is dependent on one or more priority levels of the IAB node. That is, the first wireless node may be associated with multiple priority levels, and the at least one configuration may include a configuration associated with each of the multiple priority levels.

[0091] In some implementations, the CU may detect the possibility that the communication of the first wireless node will interfere with the communication of the second wireless node. Figure 7 The at least one configuration determined at block 705 of may include at least one of: a configuration for causing the second wireless node to detect the first wireless node, a configuration for causing the first wireless node to detect the second wireless node, or a configuration for causing at least one of the first wireless node or the second wireless node to detect interference, as described in more detail herein. The likelihood of detecting interference may be responsive to one or more parameters, including one or more parameters of a measurement report, or an indication of interference from a second wireless node (e.g., an interference victim).

[0092] In other words, if the CU determines that the communication of a node may increase the interference to the communication of the adjacent node, the CU may configure the SMTC and / or STC of the two nodes so that the node detects the potential victim, and the node may take one or more interference management actions accordingly, such as modifying the TX configuration of its DU, or modifying the TX configuration of the sub-MT / UE. The CU may also configure the SMTC and / or STC of the two nodes so that the node detects the potential attacker, and the node may send an indication of interference to the CU and / or the attacker node, or send a priority level to the CU and / or the attacker node. The SMTC and / or STC may also be configured to enable the node to measure interference from another node. The configuration of the SMTC and / or STC by the CU (or the determination by the CU that interference exists) may be triggered by a measurement report sent by the node, or an indication of interference sent by the victim node, as described herein.

[0093] Figure 8 is a flow diagram illustrating example operations 800 for wireless communications, in accordance with certain aspects of the present disclosure. Operations 800 may be performed by an IAB node.

[0094] Operation 800 may be implemented as a processor on one or more processors (e.g., Figure 2 In addition, the signal transmission and reception performed by the first wireless communication device in operation 800 may be performed by one or more antennas (e.g., Figure 2 In some aspects, signal transmission and / or reception by the first wireless communication device may be achieved by obtaining and / or outputting signals via a bus interface of one or more processors (e.g., controllers / processors 258, 264, 266, and / or 280).

[0095] Operation 800 begins at block 805 with the IAB node receiving at least one configuration for communicating one or more SSBs between the first wireless node (e.g., IAB node 510) and a second wireless node (IAB node 512), each of the first wireless node and the second wireless node being configured to serve one or more subnodes. At block 810, the IAB node may manage interference to communications based on the at least one configuration, the communications being conducted by the first wireless node or the second wireless node. In some aspects, interference may be managed based on at least one priority level associated with each of at least one of the first wireless node or the second wireless node.

[0096] In certain aspects, the IAB node may infer at least one priority level of the second wireless node. The at least one priority level may be inferred based on detecting one or more SSBs transmitted by the second wireless node during an SSB opportunity configured for SSB transmissions by a node having the at least one priority level, as described with reference to Fig. 9 Described in more detail.

[0097] Fig. 9 900 is illustrated as being configured for transmitting and measuring SSBs based on priority levels of IAB nodes in accordance with certain aspects of the present disclosure. Fig. 9 As illustrated in , there may be four SSB opportunities 902, 904, 906, 908. An IAB node that is a priority class 1 (e.g., the highest priority level among priority classes 1-5) may receive an STC for transmitting an SSB in all four SSB opportunities to increase the chances of lower priority IAB nodes discovering the class 1 priority IAB node and may take interference management actions to reduce interference to the class 1 priority IAB node. A priority class 2 IAB node may be configured with an STC for transmitting an SSB in three of the four SSB opportunities 904, 906, 908 and an SMTC for measuring an SSB during the SSB opportunity 902. As illustrated, the lowest priority IAB node (e.g., a priority class 5 IAB node) may be configured with an SMTC for measuring an SSB in all SSB opportunities 902, 904, 906, 908.

[0098] In certain aspects, the CU may configure an STC window corresponding to one or more priority levels to the IAB node DU / cell. The CU may configure an SMTC window that may be aligned with the STC window to the IAB node MT. The IAB node may infer information about the priority level of the IAB node DU / cell corresponding to the physical cell identity (PCI) detected by the IAB node MT within the SMTC window. In other words, if a priority class 5 IAB node detects an SSB in SSB opportunity 902, the IAB node may know that the SSB is transmitted from a priority class 1 IAB node, because the only IAB node that can be configured to transmit an SSB during the SSB opportunity 902 is a priority class 1 IAB node. Similarly, an IAB node that detects an SSB in SSB opportunity 904 may know that the SSB comes from a priority class 1 IAB node or a priority class 2 IAB node.

[0099] In certain aspects, the IAB node may infer information related to its own priority level based on receiving (all) STC and / or SMTC configurations. That is, the IAB node may know that a specific configuration for transmitting SSB or measuring SSB is reserved for IAB nodes of a certain priority class, and thus may infer its own priority level accordingly. Similarly, if the IAB node becomes aware of the (all) STC and / or SMTC configurations of another node, the IAB node may infer information related to the priority level of the other node. Once the IAB node determines its priority level and / or the priority level of another IAB node, the IAB node may use (all) priority levels to perform interference management. For example, the IAB node may update the priority level and send an indication of the priority level (e.g., to notify the control node of the priority level of the IAB node or the priority level of another node for interference management). The IAB node may also modify the transmission (TX) configuration of its DU or sub-MT / UE to mitigate interference (e.g., reduce TX power when the IAB node is interfering with a higher priority IAB node). An IAB node may send an indication of interference measured by the IAB node or child node. For example, if an IAB node detects interference from a lower priority IAB node, the IAB node detecting the interference may send the indication as an interference complaint to cause the lower priority IAB node to take action to reduce the interference.

[0100] In some implementations, the STC configuration of a node may be determined by an entity or party other than the CU. In this case, the CU may determine the SMTC configuration of a node based on the STC configuration of one or more nodes. For example, the CU may align the SMTC window of a low priority node with the STC window of a high priority node, where the STC window is configured by operation, administration, and maintenance (OAM).

[0101] Fig.10 The description may include operations configured to perform the techniques disclosed herein (such as, Figure 7-8 1000 includes various components (e.g., corresponding to means-plus-function components) of the communication device 1000 and the operations illustrated in the figure. 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 transmit and receive signals (such as the various signals described herein) for the communication device 1000 via an antenna 1010. The transceiver 1008 may, for example, include reference Figure 2 One or more components of the UE 120, including, for example, a demodulator 254, a MIMO detector 256, a receive processor 258, a transmit processor 264, a TX MIMO processor 266, etc. Additionally or alternatively, the transceiver 1008 may include, for example, a reference Figure 2The processing system 1002 may 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.

[0102] 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 programs that, when executed by the processor 1004, cause the processor 1004 to execute Figure 7-9 1014 ; code 1016 for managing interference; and code 1018 for transmitting or receiving (e.g., transmitting or receiving at least one configuration). In some aspects, the processor 1004 has a circuit system configured to implement the code stored in the computer-readable medium / memory 1012. The processor 1004 includes a circuit system 1020 for determining (e.g., determining at least one configuration for communicating SSB); a circuit system 1022 for managing interference; and a circuit system 1024 for transmitting or receiving (e.g., transmitting or receiving at least one configuration).

[0103] For example, means for transmitting (or means for outputting for transmission) may include Figure 2 The transmitter and / or antenna(s) 234 of BS 110 or the transmitter and / or antenna(s) 252 of UE 120, and / or Fig.10 The circuit system 1024 and / or the transceiver 1008 of the communication device 1000 in FIG. 1004 may include: Figure 2 The receiver and / or antenna(s) 234 of BS 110 or the receiver and / or antenna(s) 252 of UE 120, and / or Fig.10 The circuit system 1024 and / or the transceiver 1008 of the communication device 1000 in the embodiment of the present invention. The means for determining and the means for taking one or more actions may include a processing system, which may include one or more processors, such as Figure 210, or the receive processor 258, transmit processor 264, TX MIMO processor 266 and / or controller / processor 280 of UE 120a, and / or Fig.10 The processing system 1002 of the communication device 1000 in FIG.

[0104] Example aspects

[0105] Aspect 1. A method for wireless communication, comprising: determining at least one configuration for communicating one or more synchronization signal blocks (SSBs) between a first wireless node, a second wireless node, or both of the first wireless node and the second wireless node based on a priority level associated with each of the first wireless node and the second wireless node, each of the first wireless node and the second wireless node being configured to serve one or more subnodes, wherein the at least one configuration includes information that enables the first wireless node or the second wireless node to manage interference with communications; and transmitting the at least one configuration to at least one of the first wireless node or the second wireless node.

[0106] Aspect 2. The method of aspect 1, wherein, if the priority level of the second wireless node is greater than the priority level of the first wireless node, the at least one configuration indicates a cell identifier (ID) to be measured by the first wireless node based on the one or more SSBs, the cell ID being associated with the second wireless node.

[0107] Aspect 3. The method of any one of aspects 1-2, wherein if the priority level of the second wireless node is greater than the priority level of the first wireless node, the at least one configuration instructs the first wireless node to measure the one or more SSBs transmitted by the second wireless node.

[0108] Aspect 4. The method of any one of aspects 1-3, wherein the at least one configuration configures a periodicity of transmission of the one or more SSBs by the first wireless node based on a policy that decreases as a priority level associated with the first wireless node increases.

[0109] Aspect 5. The method of any one of aspects 1-4, wherein the at least one configuration configures a periodicity of measuring the one or more SSBs by the second wireless node based on a policy that decreases as a priority level associated with the second wireless node decreases.

[0110] Aspect 6. A method as described in any one of Aspects 1-5, wherein if the priority level of the second wireless node is greater than that of the first wireless node, the at least one configuration aligns the window used for measuring the one or more SSBs by the first wireless node with the window used for transmitting the one or more SSBs by the second wireless node.

[0111] Aspect 7. A method as described in any one of Aspects 1-6, wherein if the priority level of the second wireless node is greater than that of the first wireless node, the at least one configuration sets the configuration for measuring the one or more SSBs by the first wireless node to be equal to the configuration for transmitting the one or more SSBs by the second wireless node.

[0112] Aspect 8. A method as described in any one of Aspects 1-7, wherein: the at least one configuration configures the duration of the window for measuring the one or more SSBs by the first wireless node based on the following policy: the duration of the window decreases as the priority level associated with the first wireless node increases; if the priority level of the second wireless node is lower than that of the first wireless node, the at least one configuration sets the window for measuring the one or more SSBs by the first wireless node and the window for transmitting the one or more SSBs by the second wireless node to be non-overlapping; the at least one configuration sets the number of one or more SSBs to be transmitted by the second wireless node during a time unit based on the following policy: the number increases as the priority level of the second wireless node increases; the at least one configuration sets the number of one or more windows for measuring the one or more SSBs by the first wireless node based on the following policy: the number of one or more windows decreases as the priority level of the first wireless node increases; the at least one configuration sets the number of one or more windows for transmitting the one or more SSBs by the second wireless node based on the following policy: the number of the one or more windows for transmission increases as the priority level of the second wireless node increases; or any combination thereof.

[0113] Aspect 9. The method of any one of aspects 1-8, wherein the first wireless node is associated with a plurality of priority levels, and wherein the at least one configuration comprises a configuration associated with each of the plurality of priority levels.

[0114] Aspect 10. The method as described in any one of Aspects 1-9 further includes: detecting the possibility that the communication of the first wireless node will interfere with the communication of the second wireless node, wherein the at least one configuration includes at least one of the following: a configuration for causing the second wireless node to detect the first wireless node; a configuration for causing the first wireless node to detect the second wireless node; or a configuration for causing at least one of the first wireless node or the second wireless node to detect interference.

[0115] Aspect 11. The method of aspect 10, wherein detecting the likelihood of interference is responsive to at least one of: one or more parameters of a measurement report; or an indication of interference from the second wireless node.

[0116] Aspect 12. The method of any one of aspects 1-11, wherein the configuration comprises an SSB measurement time configuration (SMTC) for at least one measurement to be performed based on the one or more SSBs.

[0117] Aspect 13. A method as described in Aspect 12, wherein the SMTC includes: a center frequency associated with the one or more SSBs, a subcarrier spacing associated with the one or more SSBs, a periodicity of a window during which measurements are performed, a timing offset associated with the window during which measurements are performed, a duration of the window during which measurements are performed, a list of one or more cellular cell IDs to be measured, a list of the one or more SSBs to be measured, or any combination thereof.

[0118] Aspect 14. A method as described in any of Aspects 1-11, wherein the configuration includes an SSB transmission configuration (STC) for transmitting the one or more SSBs, wherein the STC includes: a center frequency associated with the one or more SSBs, a subcarrier spacing associated with the one or more SSBs, a periodicity of transmitting the one or more SSBs, a timing offset associated with transmitting the one or more SSBs, at least one index associated with the one or more SSBs to be transmitted, or any combination thereof.

[0119] Aspect 15. The method according to any one of aspects 1-14, wherein the first wireless node and the second wireless node are nodes of an integrated access and backhaul (IAB) network, and the method is performed by a central unit (CU) of the IAB network.

[0120] Aspect 16. A method for wireless communication, comprising: receiving at a first wireless node at least one configuration for communicating one or more synchronization signal blocks (SSBs) between the first wireless node and a second wireless node, each of the first wireless node and the second wireless node being configured to serve one or more subnodes; and managing interference to communications via the one or more SSBs based on at least one priority level associated with the first wireless node, the second wireless node, or both, the communications being conducted by the first wireless node or the second wireless node.

[0121] Aspect 17. The method of aspect 16, wherein the at least one priority level associated with the first wireless node comprises a plurality of priority levels, and wherein the at least one configuration for communicating the one or more SSBs by the first wireless node comprises a configuration associated with each of the plurality of priority levels.

[0122] Aspect 18. The method of any of Aspects 16-17, further comprising inferring the at least one priority level associated with the first wireless node, the second wireless node, or both based on the at least one configuration.

[0123] Aspect 19. The method of aspect 18, wherein inferring the at least one priority level comprises inferring a priority level of the first wireless node based on a configuration for communicating the one or more SSBs by the first wireless node.

[0124] Aspect 20. The method of any of Aspects 18-19, wherein inferring the at least one priority level comprises inferring a priority level of the second wireless node based on a configuration for communicating the one or more SSBs by the second wireless node.

[0125] Aspect 21. The method of any of Aspects 16-20, further comprising: inferring at least one priority level of the second wireless node based on detecting the one or more SSBs transmitted by the second wireless node during an SSB opportunity, the SSB opportunity being configured for SSB transmissions by nodes having the at least one priority level.

[0126] Aspect 22. The method of any one of Aspects 16-21, wherein the at least one configuration comprises an SSB measurement time configuration (SMTC) for at least one measurement performed based on the one or more SSBs.

[0127] Aspect 23. A method as described in Aspect 22, wherein the SMTC includes: a center frequency associated with the one or more SSBs, a subcarrier spacing associated with the one or more SSBs, a periodicity of a window during which measurements are performed, a timing offset associated with the window during which measurements are performed, a duration of the window during which measurements are performed, a list of one or more cellular cell IDs to be measured, a list of the one or more SSBs to be measured, or any combination thereof.

[0128] Aspect 24. A method as described in any of Aspects 16-23, wherein the at least one configuration includes an SSB transmission configuration (STC) for transmitting the one or more SSBs, wherein the STC includes: a center frequency associated with the one or more SSBs, a subcarrier spacing associated with the one or more SSBs, a periodicity of transmitting the one or more SSBs, a timing offset associated with transmitting the one or more SSBs, at least one index associated with the one or more SSBs to be transmitted, or any combination thereof.

[0129] Aspect 25. The method of any one of aspects 16-24, wherein the first wireless node and the second wireless node are nodes of an integrated access and backhaul (IAB) network.

[0130] The techniques described herein may be used for various wireless communication technologies, such as 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.

[0131] A CDMA network may 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 may implement radio technologies such as Global System for Mobile Communications (GSM). An OFDMA network may implement radio technologies such as NR (e.g., 5G RA), Evolved UTRA (E-UTRA), Ultra Mobile Broadband (UMB), Institute of Electrical and Electronics Engineers (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 called the Third Generation Partnership Project (3GPP). cdma2000 and UMB are described in documents from an organization named "3rd Generation Partnership Project 2" (3GPP2).

[0132] The techniques described herein may be used for the wireless networks and radio technologies mentioned above as well as other wireless networks and radio technologies. For clarity, although various aspects may be described herein using terms commonly associated with 3G, 4G and / or 5G wireless technologies, various aspects of the present disclosure may be applied in communication systems based on other generations.

[0133] New Radio (NR) is an emerging wireless communication technology being developed in collaboration with the 5G Technical Forum (5GTF). NR access (e.g., 5G NR) can support a variety of wireless communication services, such as enhanced mobile broadband (eMBB) targeting wide bandwidth (e.g., 80MHz or higher), millimeter wave (mmW) targeting high carrier frequency (e.g., 25GHz or higher), massive machine type communication MTC (mMTC) targeting non-backward compatible MTC technology, and / or mission critical services 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.

[0134] In 3GPP, the term "cell" may refer to the coverage area of ​​a B node (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 B node (gNB or g B node), access point (AP), distributed unit (DU), carrier, or transmission reception point (TRP) may be used interchangeably. The BS may provide communication coverage for macro cells, pico cells, femto cells, and / or other types of cells. A macro cell may cover a relatively large geographic area (e.g., a radius of several thousand meters) and may allow unrestricted access by UEs with service subscriptions. A pico cell may cover a relatively small geographic area and may allow unrestricted access by UEs with service subscriptions. A femto cell may cover a relatively small geographic area (e.g., a residence) and may allow restricted access by UEs associated with the femto cell (e.g., UEs in a closed subscriber group (CSG), UEs of users in a residence, etc.). A BS for a macro cell may be referred to as a macro BS. A BS for a pico cell may be referred to as a pico BS. A BS for a femto cell may be referred to as a femto BS or a home BS.

[0135] UE may also be referred to as a mobile station, terminal, access terminal, subscriber unit, station, customer premises equipment (CPE), cellular phone, smart phone, personal digital assistant (PDA), wireless modem, wireless communication device, handheld device, laptop computer, cordless phone, wireless local loop (WLL) station, tablet computer, camera, gaming device, netbook, smartbook, ultrabook, appliance, medical device or medical equipment, biometric sensor / device, wearable device (such as smart watch, smart clothing, smart glasses, smart wristband, smart jewelry (e.g., smart ring, smart bracelet, etc.)), entertainment device (e.g., music device, video device, satellite radio, etc.), transportation component or sensor, smart meter / sensor, industrial manufacturing equipment, global positioning system device, or any other suitable device configured to communicate via 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 connectivity for or to a network (e.g., a wide area network (such as the Internet) or a cellular network), for example, via a wired or wireless communication link. Some UEs may be considered Internet of Things (IoT) devices, which may be narrowband IoT (NB-IoT) devices.

[0136] Some wireless networks (e.g., LTE) utilize orthogonal frequency division multiplexing (OFDM) on the downlink and single carrier frequency division multiplexing (SC-FDM) on the uplink. OFDM and SC-FDM divide the system bandwidth into multiple (K) orthogonal subcarriers, which are also often referred to as frequency modulation, frequency bins, etc. Each subcarrier can be modulated with data. In general, modulation symbols are sent in the frequency domain for OFDM and in the time domain for SC-FDM. The spacing between adjacent subcarriers can be fixed, and the total number of subcarriers (K) can depend on the system bandwidth. For example, the spacing of subcarriers can be 15kHz, and the minimum resource allocation (called a "resource block" (RB)) can be 12 subcarriers (or 180kHz). Therefore, for system bandwidths of 1.25, 2.5, 5, 10, or 20 megahertz (MHz), the nominal fast Fourier transform (FFT) size can be equal to 128, 256, 512, 1024, or 2048, respectively. The system bandwidth may also be divided into subbands. For example, a subband may cover 1.8 MHz (e.g., 6 RBs), and there may be 1, 2, 4, 8, or 16 subbands for system bandwidths of 1.25, 2.5, 5, 10, or 20 MHz, respectively. In LTE, the basic transmission time interval (TTI) or packet duration is a 1 ms subframe.

[0137] NR can utilize OFDM with CP on the uplink and downlink, and includes support for half-duplex operation using time division duplex (TDD). In NR, a subframe is still 1ms, but the basic TTI is called a time slot. A subframe contains a variable number of time slots (e.g., 1, 2, 4, 8, 16...time slots), depending on the subcarrier spacing. NR RB is 12 consecutive frequency subcarriers. NR can support a base subcarrier spacing of 15KHz, and other subcarrier spacings can be defined relative to the base subcarrier spacing, such as 30kHz, 60kHz, 120kHz, 240kHz, etc. The symbol and time slot lengths scale with the subcarrier spacing. The CP length also depends on the subcarrier spacing. Beamforming can be supported and the beam direction can be dynamically configured. MIMO transmission with precoding can also be supported. In some examples, the MIMO configuration in the DL can support up to 8 transmit antennas (multi-layer DL transmission with up to 8 streams) and up to 2 streams per UE. In some examples, multi-layer transmission of up to 2 streams per UE may be supported. Aggregation of multiple cells may be supported using up to 8 serving cells.

[0138] In some examples, access to the air interface may be scheduled. A scheduling entity (e.g., BS) allocates resources for communication between some or all devices and equipment within its service area or cell. A scheduling entity may be responsible for scheduling, assigning, reconfiguring, and releasing resources for one or more subordinate entities. That is, for scheduled communications, subordinate entities utilize resources allocated by the scheduling entity. A base station is not the only entity that can be used as a scheduling entity. In some examples, a UE may act as a scheduling entity, and may schedule resources for one or more subordinate entities (e.g., one or more other UEs), and other UEs may utilize resources scheduled by the UE for wireless communication. In some examples, a UE may act as a scheduling entity in a peer-to-peer (P2P) network and / or in a mesh network. In a mesh network example, UEs may communicate directly with each other in addition to communicating with a scheduling entity.

[0139] In some examples, two or more subordinate entities (e.g., UEs) may communicate with each other using sidelink signals. Real-world applications of such sidelink communications may include public safety, proximity services, UE-to-network relay, vehicle-to-vehicle (V2V) communications, Internet of Everything (IoE) communications, IoT communications, mission-critical mesh networks, and / or various other suitable applications. Generally, a sidelink signal may refer to a signal that is communicated from one subordinate entity (e.g., UE1) to another subordinate entity (e.g., UE2) without relaying the communication through a scheduling entity (e.g., UE or BS), even if the scheduling entity may be used for scheduling and / or control purposes. In some examples, the sidelink signal may be communicated using a licensed spectrum (unlike wireless local area networks, which typically use an unlicensed spectrum).

[0140] Each method disclosed herein includes one or more steps or actions for implementing the method. These method steps and / or actions can 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 can be changed without departing from the scope of the claims.

[0141] 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. As an example, "at least one of a, b, or c" is intended to cover: a, b, c, ab, ac, bc, and abc, as well as any combination with multiple identical elements (e.g., aa, aaa, aab, aac, abb, acc, bb, bbb, bbc, cc, and ccc, or any other ordering of a, b, and c).

[0142] As used herein, the term "determining" encompasses a wide variety of actions. For example, "determining" may include calculating, computing, processing, deriving, investigating, searching (e.g., searching in a table, a database, or another data structure), ascertaining, and the like. Also, "determining" may include receiving (e.g., receiving information), accessing (e.g., accessing data in a memory), and the like. Also, "determining" may include resolving, selecting, choosing, establishing, and the like.

[0143] The previous description is provided to enable any person skilled in the art to practice the various aspects described herein. Various modifications to these aspects will be easily understood by those skilled in the art, and the universal principles defined herein can be applied to other aspects. Thus, the claims are not intended to be limited to the various aspects shown herein, but should be granted the full scope consistent with the language of the claims, wherein the singular reference to the element is not intended to mean "there is and only one" (unless specifically stated) but "one or more". Unless otherwise specifically stated, the term "some / some" refers to one or more. The elements of the various aspects described throughout this disclosure are all structural and functional equivalents currently or hereafter known to ordinary technicians in the art and are expressly incorporated herein by reference, and are intended to be covered by the claims. In addition, nothing disclosed herein is intended to be donated to the public, regardless of whether such disclosure is explicitly recorded in the claims. Any element of the claim should not be interpreted under the provisions of 35 USC§112(f), unless the element is explicitly stated using the phrase "device for..." or in the case of a method claim, the element is stated using the phrase "step for..."

[0144] The various operations of the methods described above may be performed by any suitable device capable of performing the corresponding functions. These devices may include various hardware and / or software components and / or modules, including but not limited to circuits, application specific integrated circuits (ASICs), or processors. In general, where there are operations illustrated in the accompanying drawings, these operations may have corresponding paired device plus function components.

[0145] The various illustrative logical blocks, modules, and circuits described in conjunction with the present disclosure may be implemented or executed with 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. A general purpose 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.

[0146] 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 link together various circuits including a processor, a machine-readable medium, and a bus interface. The bus interface may be used to connect a network adapter, etc., to the processing system via the bus. The network adapter may be used to implement the signal processing functions of the PHY layer. In the user terminal 120 (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 link various other circuits, such as timing sources, peripherals, voltage regulators, power management circuits, and the like, which are well known in the art and 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 circuit systems capable of executing software. Those skilled in the art will recognize how to best implement the functionality described with respect to the processing system, depending on the specific application and the overall design constraints imposed on the overall system. For example, in some cases, a processor (such as Figure 2 Those processors shown in ) may be configured to perform Figure 7 Operation 700 and / or Figure 8 Operation 800.

[0147] If implemented in software, each function may be stored on or transmitted by a computer-readable medium as one or more instructions or codes. Software should be broadly interpreted to mean instructions, data, or any combination thereof, whether referred to as software, firmware, middleware, microcode, hardware description language, or other. Computer-readable media include both computer storage media and communication media, which include any media that facilitate the transfer of computer programs 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 and write information from / to the storage medium. In an alternative, a storage medium may be integrated into a processor. As an 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 additionally, a machine-readable medium or any part thereof may be integrated into a processor, such as a cache and / or a general register file, which may be the case. As an 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 implemented in a computer program product.

[0148] A software module may include a single instruction, or many instructions, and may be distributed over several different code segments, distributed between different programs, and distributed across multiple storage media. A computer-readable medium may include several software modules. These software modules include instructions that cause a processing system to perform various functions when executed by an apparatus such as a processor. These software modules may include a transmission module and a receiving module. Each software module may reside in a single storage device or may be distributed across multiple storage devices. As an example, when a triggering event occurs, a software module may be loaded into a RAM from a hard drive. During the execution of a software module, a processor may load some instructions into a cache to increase access speed. One or more cache lines may then be loaded into a general register file for execution by the processor. When describing the functionality of a software module as described below, it will be understood that such functionality is implemented by the processor when the processor executes instructions from the software module.

[0149] Likewise, 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 (such as infrared (IR), radio, and microwave), then the coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technology (such as infrared, radio, and microwave) is included in the definition of medium. Disk and disc, as used herein, include compact disc (CD), laser disc, optical disc, digital versatile disc (DVD), floppy disk, and Disks, where disks often reproduce data magnetically, and discs reproduce data optically with lasers. 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 transient computer-readable media (e.g., signals). Combinations of the above should also be included within the scope of computer-readable media.

[0150] 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, which instructions can be executed by one or more processors to perform the operations described herein. For example, for performing the operations described herein and in Figure 7-9 Instructions for the operations explained in .

[0151] In addition, it should be appreciated that modules and / or other appropriate means for performing the methods and techniques described herein may be downloaded and / or otherwise obtained by a user terminal and / or base station where applicable. For example, such a device can be coupled to a server to facilitate the transfer of means for performing the methods described herein. Alternatively, the various methods described herein can be provided via a storage device (e.g., RAM, ROM, a physical storage medium such as a compact disc (CD) or a floppy disk, etc.) so that once the storage device is coupled to or provided to a user terminal and / or base station, the device can obtain the various methods. In addition, any other suitable technology suitable for providing the methods and techniques described herein to a device may be utilized.

[0152] It will be understood that the claims are not limited to the precise configuration and components illustrated above. Various changes, substitutions 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, comprising: determining, based on a priority level of a first wireless node, a priority level of a second wireless node, or both, at least one configuration for communicating one or more synchronization signal blocks (SSBs) between the first wireless node and the second wireless node, each of the first wireless node and the second wireless node being configured to serve one or more subnodes, wherein the at least one configuration includes information that enables the first wireless node or the second wireless node to manage interference to communications; as well as transmitting the at least one configuration to at least one of the first wireless node or the second wireless node, Wherein each of the priority level of the first wireless node and the priority level of the second wireless node corresponds to one of a plurality of priority levels, wherein the plurality of priority levels comprises three or more priority levels.

2. The method of claim 1, wherein: In a case where the priority level of the second wireless node is greater than the priority level of the first wireless node, the at least one configuration indicates a cellular cell identifier (ID) to be measured by the first wireless node based on the one or more SSBs, and the cellular cell ID is associated with the second wireless node.

3. The method of claim 1, wherein: In a case where the priority level of the second wireless node is greater than the priority level of the first wireless node, the at least one configuration instructs the first wireless node to measure the one or more SSBs transmitted by the second wireless node.

4. The method of claim 1, wherein: The at least one configuration configures a periodicity of transmission of the one or more SSBs by the first wireless node based on a policy that decreases as a priority level of the first wireless node increases.

5. The method of claim 1, wherein: The at least one configuration configures a periodicity of measuring the one or more SSBs by the second wireless node based on a policy that decreases as a priority level of the second wireless node decreases.

6. The method of claim 1, wherein: In a case where the priority level of the second wireless node is greater than the priority level of the first wireless node, the at least one configuration aligns a window used for measuring the one or more SSBs by the first wireless node with a window used for transmitting the one or more SSBs by the second wireless node.

7. The method of claim 1, wherein: In a case where the priority level of the second wireless node is greater than the priority level of the first wireless node, the at least one configuration sets the configuration for measuring the one or more SSBs by the first wireless node to be equal to the configuration for transmitting the one or more SSBs by the second wireless node.

8. The method of claim 1, wherein: The at least one configuration configures a duration of a window for measuring the one or more SSBs by the first wireless node based on a policy where the duration of the window decreases as a priority level of the first wireless node increases; The at least one configuration sets a window for measuring the one or more SSBs by the first wireless node and a window for transmitting the one or more SSBs by the second wireless node to be non-overlapping if the priority level of the second wireless node is less than the priority level of the first wireless node; The at least one configuration sets a number of one or more SSBs to be transmitted by the second wireless node during a time unit based on a policy where the number increases as a priority level of the second wireless node increases; The at least one configuration sets a number of one or more windows for measuring the one or more SSBs by the first wireless node based on a policy where the number of the one or more windows decreases as a priority level of the first wireless node increases; The at least one configuration sets a number of one or more windows for transmission of the one or more SSBs by the second wireless node based on a policy where the number of the one or more windows for transmission increases as a priority level of the second wireless node increases; or Any combination thereof.

9. The method of claim 1, wherein: The priority level of the first wireless node is different from the priority level of the second wireless node; and Determining the at least one configuration includes: In a case where determining that the at least one configuration is based on a priority level of the first wireless node, determining that the at least one configuration includes a first configuration; as well as In a case where determining the at least one configuration is based on a priority level of the second wireless node, determining the at least one configuration includes a second configuration, wherein the first configuration and the second configuration are different.

10. The method of claim 1, further comprising: detecting a likelihood that communications of the first wireless node will interfere with communications of the second wireless node, wherein the at least one configuration comprises at least one of: configured to enable the second wireless node to detect a configuration of the first wireless node; a configuration for enabling the first wireless node to detect the second wireless node; or A configuration for causing at least one of the first wireless node or the second wireless node to detect interference.

11. The method of claim 10, wherein: The likelihood of detecting interference is responsive to at least one of: One or more parameters of the measurement report; or An indication of the interference from the second wireless node.

12. The method of claim 1, wherein: The configuration includes an SSB measurement time configuration (SMTC) for at least one measurement to be performed based on the one or more SSBs.

13. The method of claim 12, wherein: The SMTC includes: a center frequency associated with the one or more SSBs, a subcarrier spacing associated with the one or more SSBs, a periodicity of a window during which the measurements are performed, a timing offset associated with the window during which the measurements are performed, a duration of the window during which the measurements are performed, a list of one or more cell IDs to be measured, a list of the one or more SSBs to be measured, or any combination thereof.

14. The method of claim 1, wherein: The configuration includes an SSB transmission configuration (STC) for transmitting the one or more SSBs, wherein the STC includes: a center frequency associated with the one or more SSBs, a subcarrier spacing associated with the one or more SSBs, a periodicity for transmitting the one or more SSBs, a timing offset associated with transmitting the one or more SSBs, at least one index associated with the one or more SSBs to be transmitted, or any combination thereof.

15. The method of claim 1, wherein: The first wireless node and the second wireless node are nodes of an integrated access and backhaul (IAB) network, and the method is performed by a central unit (CU) of the IAB network.

16. A method for wireless communication, comprising: receiving, at a first wireless node, at least one configuration for communicating one or more synchronization signal blocks (SSBs) between the first wireless node and a second wireless node, each of the first wireless node and the second wireless node being configured to serve one or more subnodes; as well as managing interference to communications via the one or more SSBs based on a priority level of the first wireless node, a priority level of the second wireless node, or both the priority level of the first wireless node and the priority level of the second wireless node, the communications being conducted by the first wireless node or the second wireless node, Wherein each of the priority level of the first wireless node and the priority level of the second wireless node corresponds to one of a plurality of priority levels, wherein the plurality of priority levels comprises three or more priority levels.

17. The method of claim 16, wherein: The priority level of the first wireless node is different from the priority level of the second wireless node; and Receiving the at least one configuration comprises: receiving a first configuration where the at least one configuration is based on a priority level of the first wireless node; as well as Where the at least one configuration is based on a priority level of the second wireless node, a second configuration is received, wherein the first configuration and the second configuration are different.

18. The method of claim 16, further comprising: A priority level of the first wireless node, a priority level of the second wireless node, or both the priority level of the first wireless node and the priority level of the second wireless node are inferred based on the at least one configuration.

19. The method of claim 18, wherein: Inferring includes inferring a priority level of the first wireless node based on the at least one configuration including a configuration for communicating the one or more SSBs by the first wireless node.

20. The method of claim 18, wherein: Inferring includes inferring a priority level of the second wireless node based on the at least one configuration including a configuration for communicating the one or more SSBs by the second wireless node.

21. The method of claim 16, further comprising: The priority level of the second wireless node is inferred to correspond to a given priority level among the plurality of priority levels based on detecting the one or more SSBs transmitted by the second wireless node during an SSB opportunity configured for SSB transmission by a node having the given priority level.

22. The method of claim 16, wherein: The at least one configuration includes an SSB measurement time configuration (SMTC) for at least one measurement performed based on the one or more SSBs.

23. The method of claim 22, wherein: The SMTC includes: a center frequency associated with the one or more SSBs, a subcarrier spacing associated with the one or more SSBs, a periodicity of a window during which the measurements are performed, a timing offset associated with the window during which the measurements are performed, a duration of the window during which the measurements are performed, a list of one or more cell IDs to be measured, a list of the one or more SSBs to be measured, or any combination thereof.

24. The method of claim 16, wherein: The at least one configuration includes an SSB transmission configuration (STC) for transmitting the one or more SSBs, wherein the STC includes: a center frequency associated with the one or more SSBs, a subcarrier spacing associated with the one or more SSBs, a periodicity for transmitting the one or more SSBs, a timing offset associated with transmitting the one or more SSBs, at least one index associated with the one or more SSBs to be transmitted, or any combination thereof.

25. The method of claim 16, wherein: The first wireless node and the second wireless node are nodes of an integrated access and backhaul (IAB) network.

26. An apparatus for wireless communication, comprising: A processing system configured to: determine at least one configuration for communicating one or more synchronization signal blocks (SSBs) between the first wireless node and the second wireless node based on a priority level of a first wireless node, a priority level of a second wireless node, or both the priority level of the first wireless node and the priority level of the second wireless node, each of the first wireless node and the second wireless node being configured to serve one or more subnodes, wherein the at least one configuration includes information that enables the first wireless node or the second wireless node to manage interference to communications; as well as a transmitter configured to transmit the at least one configuration to at least one of the first wireless node or the second wireless node, Wherein each of the priority level of the first wireless node and the priority level of the second wireless node corresponds to one of a plurality of priority levels, wherein the plurality of priority levels comprises three or more priority levels.

27. The device of claim 26, wherein: The first wireless node and the second wireless node are nodes of an integrated access and backhaul (IAB) network.

28. An apparatus for wireless communication, comprising: a receiver configured to: receive at a first wireless node at least one configuration for communicating one or more synchronization signal blocks (SSBs) between the first wireless node and a second wireless node, each of the first wireless node and the second wireless node being configured to serve one or more subnodes; as well as a processing system configured to manage interference to communications via the one or more SSBs based on a priority level of the first wireless node, a priority level of the second wireless node, or both the priority level of the first wireless node and the priority level of the second wireless node, the communications being conducted by the first wireless node or the second wireless node, Wherein each of the priority level of the first wireless node and the priority level of the second wireless node corresponds to one of a plurality of priority levels, wherein the plurality of priority levels comprises three or more priority levels.

29. The apparatus of claim 28, wherein: The first wireless node and the second wireless node are nodes of an integrated access and backhaul (IAB) network.

30. A device for wireless communication, comprising: Apparatus for carrying out the method according to any one of claims 1 to 15.

31. A device for wireless communication, comprising: Apparatus for carrying out the method of any one of claims 16 to 25.

32. A non-transitory computer readable medium storing instructions for wireless communication, the instructions, when executed by at least one processor of a device, causing the at least one processor to perform the method of any one of claims 1 to 15.

33. A non-transitory computer readable medium storing instructions for wireless communication, the instructions, when executed by at least one processor of a device, causing the at least one processor to perform the method of any one of claims 16 to 25.

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