Enhanced resource management for mobile integrated access backhaul (IAB)

Abstract

The present disclosure provides systems, methods, and apparatus for wireless communications by a mobile wireless node of a wireless backhaul communication network, including a computer program encoded on a computer storage medium. In one aspect, the mobile wireless node determines a first set of communication resources for use by the mobile wireless node. The wireless node communicates with one or more wireless devices using the first set of communication resources via one or more sub-links when the wireless backhaul communication network has a first topology and when the wireless backhaul communication network has a second topology.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims the benefit of U.S. patent application No. 17 / 003,244, filed on August 26, 2020, entitled “ENHANCED RESOURCE MANAGEMENT FOR MOBILE INTEGRATED ACCESS BACKHAUL (IAB),” and U.S. provisional patent application No. 62 / 892,966, filed on August 28, 2019, entitled “ENHANCED RESOURCE MANAGEMENT FOR MOBILE INTEGRATED ACCESS BACKHAUL (IAB),” the entire contents of both applications are expressly incorporated herein by reference. Technical Field

[0003] Aspects of the present disclosure relate generally to wireless communication systems, and more particularly, to resource management in an integrated access backhaul (IAB) network, such as but not limited to mobile IAB node resource management. Background Art

[0004] Wireless communication networks are widely deployed to provide a variety of communication services, such as voice, video, packet data, messaging, broadcast, etc. These wireless networks can be multiple access networks that can support multiple users by sharing available network resources. Such a network (typically a multiple access network) supports communications for multiple users by sharing available network resources. An example of such a network is the Universal Terrestrial Radio Access Network (UTRAN). UTRAN is a radio access network (RAN) defined as a part of the Universal Mobile Telecommunications System (UMTS), which is a third generation (3G) mobile phone technology supported by the Third Generation Partnership Project (3GPP). Examples of multiple access network formats include code division multiple access (CDMA) networks, time division multiple access (TDMA) networks, frequency division multiple access (FDMA) networks, orthogonal FDMA (OFDMA) networks, and single carrier FDMA (SC-FDMA) networks.

[0005] A wireless communication network may include multiple base stations or Node Bs that can support communication for multiple user equipment (UEs). UEs can communicate with base stations via downlinks and uplinks. The downlink (or forward link) refers to the communication link from a base station to a UE, while the uplink (or reverse link) refers to the communication link from a UE to a base station.

[0006] A base station may transmit data and control information to a UE on the downlink, or may receive data and control information from a UE on the uplink. On the downlink, transmissions from a base station may encounter interference due to transmissions from neighboring base stations or from other wireless radio frequency (RF) transmitters. On the uplink, transmissions from a UE may be interfered with by uplink transmissions from other UEs communicating with neighboring base stations or from other wireless RF transmitters. This interference may degrade performance on both the downlink and uplink.

[0007] As the demand for mobile broadband access continues to increase, with more and more UEs accessing long-range wireless communication networks and more and more short-range wireless systems being deployed in communities, the potential for interference and congested networks is also increasing. Research and development continue to advance wireless technologies, not only to meet the growing demand for mobile broadband access, but also to advance and enhance the user experience of using mobile communications.

[0008] In addition, wireless communication systems can rely on backhaul networks to exchange information between nodes (such as between base stations or between base stations and a core network). Some backhaul networks can be wired, wireless, or include a combination of wired and wireless links. The backhaul network can be used to transmit user plane services or control plane services. A wireless backhaul network can include one or more wireless nodes, such as base stations or UEs. Different wireless nodes can use different sets of resources (such as one or a combination of time, frequency, space, code, etc.) allocated to one or more nodes. For example, a first subset of a resource set can be allocated to a first subset of nodes of the wireless backhaul network, and a second subset of resources can be allocated to a second subset of nodes of the wireless backhaul network. Dividing resources in this way can minimize interference.

[0009] Resource management is typically semi-static and performed by an IAB control node that controls the IAB network. Semi-static resource management can be slow and may result in high signaling overhead. Furthermore, semi-static resource management does not account for network dynamics, such as when the IAB network includes one or more mobile IAB nodes. In an IAB network with one or more mobile IAB nodes, the handover of a mobile IAB node from one parent node to another can result in resource conflicts (such as timing conflicts), which can lead to service interruptions for the mobile IAB node's child nodes and the mobile node's child IAB nodes. Summary of the Invention

[0010] In one aspect of the present disclosure, a method of wireless communication includes determining, at a mobile wireless node in a wireless backhaul communication network, a first set of communication resources for use by the mobile wireless node. The method also includes communicating, by the mobile wireless node, with one or more wireless devices using the first set of communication resources via one or more sub-links when the wireless backhaul communication network has a first topology and when the wireless backhaul communication network has a second topology.

[0011] In another aspect of the present disclosure, an apparatus configured for wireless communication is disclosed. The apparatus includes at least one processor and a memory coupled to the processor. The processor is configured to, at a mobile wireless node in a wireless backhaul communication network, determine a first set of communication resources for use by the mobile wireless node. The processor is further configured to initiate, by the mobile wireless node, communication with one or more wireless devices using the first set of communication resources via one or more sub-links when the wireless backhaul communication network has a first topology and a second topology.

[0012] In another aspect of the present disclosure, an apparatus configured for wireless communication includes means for determining, at a mobile wireless node of a wireless backhaul communication network, a first set of communication resources for use by the mobile wireless node. The apparatus also includes means for communicating, by the mobile wireless node, with one or more wireless devices via one or more sub-links using the first set of communication resources when the wireless backhaul communication network has a first topology and when the wireless backhaul communication network has a second topology.

[0013] In another aspect of the present disclosure, a non-transitory computer-readable medium having program code recorded thereon is disclosed. The program code also includes code for, at a mobile wireless node in a wireless backhaul communication network, determining a first set of communication resources for use by the mobile wireless node. The program code also includes code for initiating, by the mobile wireless node, communication with one or more wireless devices using the first set of communication resources via one or more sub-links when the wireless backhaul communication network has a first topology and when the wireless backhaul communication network has a second topology.

[0014] In another aspect of the present disclosure, an apparatus configured for wireless communication includes an interface configured to receive at least a portion of a message. The apparatus also includes a processor system configured to: determine, at a mobile wireless node of a wireless backhaul communication network, a first set of communication resources for use by the mobile wireless node; and initiate, by the mobile wireless node, communication with one or more wireless devices using the first set of communication resources via one or more sub-links when the wireless backhaul communication network has a first topology and a second topology.

[0015] In another aspect of the present disclosure, a method of wireless communication includes determining, at a control node of a wireless backhaul communication network, a first set of communication resources for use by a relay node of the wireless backhaul communication network based on a mobility state of the relay node. The method also includes transmitting, by the control node, a first resource indicator corresponding to the first set of communication resources.

[0016] In another aspect of the present disclosure, an apparatus configured for wireless communication is disclosed. The apparatus includes at least one processor and a memory coupled to the processor. The processor is configured to, at a control node of a wireless backhaul communication network, determine a first set of communication resources for use by a relay node of the wireless backhaul communication network based on a mobility state of the relay node. The processor is further configured to initiate, at the control node, transmission of a first resource indicator corresponding to the first set of communication resources.

[0017] In another aspect of the present disclosure, an apparatus includes means for determining, at a control node of a wireless backhaul communication network, a first set of communication resources for use by a relay node of the wireless backhaul communication network based on a mobility state of the relay node. The apparatus also includes means for transmitting, by the control node, a first resource indicator corresponding to the first set of communication resources.

[0018] In another aspect of the present disclosure, a non-transitory computer-readable medium having program code recorded thereon is disclosed. The program code further includes code for determining, at a control node of a wireless backhaul communication network, a first set of communication resources for use by a relay node of the wireless backhaul communication network based on a mobility state of the relay node. The program code further includes code for initiating, by the control node, transmission of a first resource indicator corresponding to the first set of communication resources.

[0019] In another aspect of the present disclosure, an apparatus configured for wireless communication includes a processing system configured to, at a control node of a wireless backhaul communication network, determine a first set of communication resources for use by a relay node of the wireless backhaul communication network based on a mobility state of the relay node; and initiate, by the control node, transmission of a first resource indicator corresponding to the first set of communication resources. The apparatus also includes an interface configured to transmit the first resource indicator.

[0020] The foregoing has outlined rather broadly the features and technical advantages of examples according to the present disclosure so that the following detailed description may be better understood. Additional features and advantages will be described below. The concepts and specific examples disclosed may be readily used as a basis for modifying or designing other structures for achieving the same purposes as the present disclosure. Such equivalent constructions do not depart from the scope of the appended claims. The characteristics of the concepts disclosed herein, both their organization and method of operation, and the associated advantages will be better understood from the following description when considered in conjunction with the accompanying drawings. Each of the figures is provided for the purpose of illustration and description and not as a definition of limitations to the claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] A further understanding of the nature and advantages of the present disclosure may be achieved by reference to the following drawings. In the drawings, similar components or features may have the same reference numerals. In addition, various components of the same type may be distinguished by following the reference numeral with a dash and a second reference numeral to distinguish between similar components. If only the first reference numeral is used in the specification, the description applies to any of the similar components having the same first reference numeral, regardless of the second reference numeral.

[0022] Figure 1 is a block diagram showing details of a wireless communication system.

[0023] Figure 2 is a block diagram showing a design of a base station and a user equipment (UE) configured according to one aspect of the present disclosure.

[0024] Figure 3 is a block diagram illustrating a wireless communication system supporting resource management in a wireless backhaul network according to aspects of the present disclosure.

[0025] Figure 4 is a block diagram illustrating a wireless communication system supporting resource management in an Integrated Access Backhaul (IAB) network in accordance with aspects of the present disclosure.

[0026] Figure 5A-5B Different configurations of IAB network topologies according to aspects of the present disclosure are shown.

[0027] Figure 5C An IAB network resource sharing method according to aspects of the present disclosure is shown.

[0028] Figure 6 is a block diagram illustrating example blocks executed by a base station.

[0029] Figure 7 is a block diagram illustrating example blocks executed by a base station.

[0030] Figure 8is a block diagram conceptually illustrating an example design of a UE.

[0031] Figure 9 is a block diagram conceptually illustrating an example design of a base station. DETAILED DESCRIPTION

[0032] The detailed description given below in conjunction with the accompanying drawings is intended as a description of various configurations and is not intended to limit the scope of the present disclosure. Instead, the detailed description includes specific details in order to provide a thorough understanding of the subject matter of the present invention. It will be apparent to those skilled in the art that these specific details are not required in all cases, and in some cases, well-known structures and components are shown in block diagram form for clarity.

[0033] The present disclosure generally relates to providing or participating in authorized shared access between two or more wireless communication systems (also referred to as wireless communication networks). In various aspects, these techniques and apparatuses can be used for wireless communication networks, such as code division multiple access (CDMA) networks, time division multiple access (TDMA) networks, frequency division multiple access (FDMA) networks, orthogonal FDMA (OFDMA) networks, single carrier FDMA (SC-FDMA) networks, LTE networks, GSM networks, fifth generation (5G) or new radio (NR) networks, and other communication networks. As described herein, the terms "network" and "system" can be used interchangeably.

[0034] OFDMA networks can implement radio technologies such as Evolved UTRA (E-UTRA), IEEE 802.11, IEEE 802.16, IEEE 802.20, flash-OFDMA, and the like. UTRA, E-UTRA, and Global System for Mobile Communications (GSM) are part of the Universal Mobile Telecommunications System. In particular, Long Term Evolution (LTE) is a version of UMTS that uses E-UTRA. UTRA, E-UTRA, GSM, UMTS, and LTE are described in documents provided by an organization called the "3rd Generation Partnership Project" (3GPP), and cdma2000 is described in documents from an organization called the "3rd Generation Partnership Project 2" (3GPP2). These different radio technologies and standards are either known or under development. For example, the 3rd Generation Partnership Project (3GPP) is a collaboration between a group of telecommunications associations that aims to define globally applicable third generation (3G) mobile phone specifications. 3GPP LTE is a 3GPP project that aims to improve the Universal Mobile Telecommunications System (UMTS) mobile phone standard. 3GPP defines specifications for next-generation mobile networks, mobile systems, and mobile devices. This disclosure relates to the evolution of wireless technologies from LTE, 4G, 5G, NR, and beyond, using a set of new and different radio access technologies, or radio air interfaces, to share access to the wireless spectrum between networks.

[0035] In particular, 5G networks consider different deployments, different spectrums, and different services and devices that can be implemented using a unified air interface based on OFDM. To achieve these goals, in addition to developing new radio technologies for 5G NR networks, further enhancements to LTE and LTE-A are also being considered. 5GNR will be able to scale to provide coverage for (1) a massive Internet of Things (IoT) with deep coverage of ultra-high density (e.g., approximately 1M nodes / km²), ultra-low complexity (e.g., approximately 10s of bits / s), ultra-low energy (e.g., approximately 10+ years of battery life), and the ability to reach challenging locations; (2) mission-critical control including strong security to protect sensitive personal, financial, or confidential information, ultra-high reliability (e.g., approximately 99.9999% reliability), ultra-low latency (e.g., approximately 1 millisecond), and users with wide-range mobility or lack of mobility; and (3) enhanced mobile broadband including extremely high capacity (e.g., approximately 10Tbps / km²), extremely high data rates (e.g., multi-Gbps rates, 100+Mbps user experienced rates), and deep awareness with advanced discovery and optimization capabilities.

[0036] 5G NR can be implemented using an optimized OFDM-based waveform with a scalable digital scheme and transmission time interval (TTI); a common, flexible framework for efficiently multiplexing services and functions with a dynamic, low-latency time division duplex (TDD) / frequency division duplex (FDD) design; and advanced wireless technologies such as massive multiple-input multiple-output (MIMO), robust millimeter wave (mmWave) transmission, advanced channel codecs, and device-centric mobility. With the scaling of subcarrier spacing, the scalability of the digital scheme in 5G NR can effectively solve the problem of operating different services on different spectrums and different deployments. For example, in various outdoor and macro coverage deployments of FDD / TDD implementations less than 3 GHz, the subcarrier spacing can appear at 15 kHz on bandwidths of 1, 5, 10, 20 MHz, etc. For other various outdoor and small cell coverage deployments of TDD greater than 3 GHz, the subcarrier spacing can appear at 30 kHz on 80 / 100 MHz bandwidth. For other indoor broadband implementations using TDD in the unlicensed portion of the 5 GHz band, subcarrier spacing can occur at 60 kHz over a 160 MHz bandwidth. Finally, for deployments using TDD at 28 GHz with the mmWave component for transmission, subcarrier spacing can occur at 120 kHz over a 500 MHz bandwidth.

[0037] 5G NR’s scalable digital scheme facilitates scalable TTIs for different latency and quality of service (QoS) requirements. For example, shorter TTIs can be used for low latency and high reliability, while longer TTIs can be used for higher spectral efficiency. Efficient multiplexing of long and short TTIs allows transmissions to start on symbol boundaries. 5G NR also considers a self-contained integrated subframe design that has uplink / downlink scheduling information, data, and acknowledgments in the same subframe. The self-contained integrated subframe supports communications in unlicensed or contention-based shared spectrum, adaptive uplink / downlink that can be flexibly configured on a per-cell basis to dynamically switch between uplink and downlink to meet current business needs.

[0038] Various other aspects and features of the present disclosure are further described below. Obviously, the teachings herein can be implemented in various forms, and any specific structure, function, or both disclosed herein are merely representative and not restrictive. Based on the teachings herein, it should be understood by those of ordinary skill in the art that the aspects disclosed herein can be implemented independently of any other aspects, and two or more of these aspects can be combined in various ways. For example, any number of aspects set forth herein can be used to implement a device or practice a method. In addition, in addition to one or more of the aspects set forth herein, other structures, functions, or structures and functions can also be used to implement such a device or practice such a method. For example, a method can be implemented as a part of a system, device, apparatus, or as instructions stored on a computer-readable medium for execution on a processor or computer. In addition, an aspect can include at least one element of a claim.

[0039] Figure 1 is a block diagram illustrating a 5G network 100 including various base stations and UEs configured in accordance with aspects of the present disclosure. The 5G network 100 includes multiple base stations 105 and other network entities. A base station may be a station that communicates with a UE and may also be referred to as an evolved Node B (eNB), a next-generation eNB, an access point, etc. Each base station 105 may provide communication coverage for a particular geographic area. In 3GPP, the term "cell" may refer to a particular geographic coverage area of a base station or base station subsystem serving the coverage area, depending on the context in which the term is used.

[0040] A base station may provide communication coverage for a macro cell or a small cell (such as a pico cell or femto cell) or other type of cell. A macro cell generally covers a relatively large geographic area (e.g., a radius of several kilometers) and may allow unrestricted access by UEs that subscribe to services with the network provider. A small cell such as a pico cell generally covers a relatively small geographic area and may allow unrestricted access by UEs that subscribe to services with the network provider. A small cell such as a femto cell will generally also cover a relatively small geographic area (e.g., a home) and, in addition to unrestricted access, may also provide restricted access to UEs associated with the femto cell (e.g., UEs in a closed subscriber group (CSG), UEs for users in a home, etc.). A base station for a macro cell may be referred to as a macro base station. A base station for a small cell may be referred to as a small cell base station, a pico base station, a femto base station, or a home base station. In Figure 1In the example shown, base stations 105d and 105e are conventional macro base stations, while base stations 105a-105c are macro base stations that enable one of 3D, full-dimensional (FD), or massive MIMO. Base stations 105a-105c utilize their high-dimensional MIMO capabilities to increase coverage and capacity by utilizing 3D beamforming in both elevation and azimuth beamforming. Base station 105f is a small cell base station that can be a home node or a portable access point. The base station can support one or more (e.g., two, three, four, etc.) cells.

[0041] 5G network 100 can support synchronous or asynchronous operation. For synchronous operation, base stations can have similar frame timing, and transmissions from different base stations can be roughly aligned in time. For asynchronous operation, base stations can have different frame timing, and transmissions from different base stations can be misaligned in time.

[0042] UEs 115 are dispersed throughout wireless network 100, and each UE may be fixed or mobile. UEs may also be referred to as terminals, mobile stations, subscriber units, stations, etc. A UE may be a cellular phone, personal digital assistant (PDA), wireless modem, wireless communication device, handheld device, tablet computer, laptop computer, cordless phone, wireless local loop (WLL) station, etc. In one aspect, a UE may be a device that includes a universal integrated circuit card (UICC). In another aspect, a UE may be a device that does not include a UICC. In some aspects, a UE that does not include a UICC may also be referred to as an Internet of Everything (IoE) or Internet of Things (IoT) device. UEs 115a-115d are examples of mobile smartphone-type devices that access 5G network 100. UEs may also be machines specifically configured for connected communications, including machine-type communications (MTC), enhanced MTC (eMTC), narrowband IoT (NB-IoT), etc. UEs 115e-115k are examples of various machines configured for communications that access 5G network 100. The UE may be able to communicate with any type of base station, whether macro, small cell, etc. Figure 1 , lightning graphics (eg, communication links) indicate wireless transmissions between a UE and a serving base station (which is a base station designated to serve the UE on a downlink or uplink) or desired transmissions between base stations, as well as backhaul transmissions between base stations.

[0043] In operation of the 5G network 100, base stations 105a-105c use 3D beamforming and coordinated spatial techniques (such as coordinated multipoint (CoMP) or multi-connectivity) to serve UEs 115a and 115b. Macro base station 105d performs backhaul communications with base stations 105a-105c and small cell base station 105f. Macro base station 105d also transmits multicast services that are subscribed to and received by UEs 115c and 115d. Such multicast services may include mobile TV or streaming video, or may include other services for providing community information, such as weather emergencies or alerts (such as Amber alerts or gray alerts).

[0044] The 5G network 100 also supports mission-critical communications with ultra-reliable and redundant links for mission-critical devices, such as UE 115e, which is a drone. The redundant communication links with UE 115e include communication links from macro base stations 105d and 105e, as well as small cell base station 105f. Other machine-type devices, such as UE 115f (thermometer), UE 115g (smart meter), and UE 115h (wearable device), can communicate directly with base stations (such as small cell base station 105f and macro base station 105e) over the 5G network 100, or by communicating with another user device that relays its information to the network (such as UE 115f transmitting temperature measurement information to smart meter UE 115g, which then reports the temperature measurement information to the network via small cell base station 105f) in a multi-hop configuration. The 5G network 100 may also provide additional network efficiencies through dynamic, low-latency TDD / FDD communications, such as in a vehicle-to-vehicle (V2V) mesh network between UEs 115i-115k communicating with a macro base station 105e.

[0045] Figure 2 A block diagram shows a design of a base station 105 and a UE 115, which may be Figure 1One of the base stations and UEs in the base station 105. At the base station 105, the transmit processor 220 can receive data from the data source 212 and control information from the controller / processor 240. The control information can be for the PBCH, PCFICH, PHICH, PDCCH, EPDCCH, MPDCCH, etc. The data can be for the PDSCH, etc. The transmit processor 220 can process (e.g., encode and symbol map) the data and control information to obtain data symbols and control symbols, respectively. The transmit processor 220 can also generate reference symbols such as the PSS, SSS, and cell-specific reference signals. If applicable, the transmit (TX) MIMO processor 230 can perform spatial processing (e.g., precoding) on the data symbols, control symbols, or reference symbols and can provide output symbol streams to modulators (MODs) 232a to 232t. Each modulator 232 can process the corresponding output symbol stream (e.g., for OFDM, etc.) to obtain an output sample stream. Each modulator 232 can further process (e.g., convert to analog, amplify, filter, and upconvert) the output sample stream to obtain a downlink signal. Downlink signals from modulators 232a through 232t may be transmitted via antennas 234a through 234t, respectively.

[0046] At the UE 115, antennas 252a through 252r can receive downlink signals from the base station 105 and can provide received signals to demodulators (DEMODs) 254a through 254r, respectively. Each demodulator 254 can condition (e.g., filter, amplify, downconvert, and digitize) a corresponding received signal to obtain input samples. Each demodulator 254 can further process the input samples (e.g., for OFDM, etc.) to obtain received symbols. A MIMO detector 256 can obtain received symbols from all demodulators 254a through 254r, perform MIMO detection on the received symbols (if applicable), and provide detected symbols. A receive processor 258 can process (e.g., demodulate, deinterleave, and decode) the detected symbols, provide decoded data for the UE 115 to a data sink 260, and provide decoded control information to a controller / processor 280.

[0047] On the uplink, at the UE 115, a transmit processor 264 may receive and process data from a data source 262 (e.g., for the PUSCH) and control information from the controller / processor 280 (e.g., for the PUCCH). The transmit processor 264 may also generate reference symbols for a reference signal. The symbols from the transmit processor 264 may be precoded by a TX MIMO processor 266 (if applicable), further processed by modulators 254a through 254r (e.g., for SC-FDM, etc.), and transmitted to the base station 105. At the base station 105, the uplink signal from the UE 115 may be received by the antenna 234, processed by the demodulator 232, detected by the MIMO detector 236 (if applicable), and further processed by the receive processor 238 to obtain decoded data and control information transmitted by the UE 115. The processor 238 may provide the decoded data to the data sink 239 and the decoded control information to the controller / processor 240.

[0048] The controller / processors 240 and 280 may direct the operation at the base station 105 and the UE 115, respectively. The controller / processor 240 or other processors and modules at the base station 105 may perform or direct the execution of various processes for the techniques described herein. The controller / processor 280 or other processors and modules at the UE 115 may also perform or direct the execution of various processes for the techniques described herein. Figure 6 and Figure 7 , or other processes of the techniques described herein. Memories 242 and 282 may store data and program codes for base station 105 and UE 115, respectively. Scheduler 244 may schedule UEs for data transmission on the downlink or uplink.

[0049] Wireless communication systems operated by different network operating entities (e.g., network operators) may share spectrum. In some cases, a network operating entity may be configured to use the entire designated shared spectrum for at least a different period of time before another network operating entity uses the entire designated shared spectrum for a period of time. Thus, to allow the network operating entities to use the entire designated shared spectrum and to mitigate interfering communications between different network operating entities, specific resources (e.g., time) may be divided and allocated to different network operating entities for specific types of communications.

[0050] For example, a network operating entity may be allocated specific time resources that are reserved for exclusive communication by the network operating entity using the entire shared spectrum. A network operating entity may also be allocated other time resources where it is given a higher priority than other network operating entities to communicate using the shared spectrum. If a prioritized network operating entity does not utilize the time resources prioritized for use by the network operating entity, those time resources may be utilized on an opportunistic basis by other network operating entities. Additional time resources may be allocated to any network operator for opportunistic use.

[0051] Access to the shared spectrum and arbitration of time resources between different network operating entities may be centrally controlled by separate entities, autonomously determined by a predefined arbitration scheme, or dynamically determined based on interactions between wireless nodes of the network operator.

[0052] In some cases ( Figure 1 The UE 115 and base station 105 of the 5G network 100 (in a 5G network) may operate in a shared radio spectrum band, which may include licensed or unlicensed (e.g., contention-based) spectrum. In the unlicensed frequency portion of the shared radio spectrum band, the UE 115 or base station 105 may conventionally perform a medium sensing process to compete for access to the spectrum. For example, the UE 115 or base station 105 may perform a listen-before-talk (LBT) process (such as a clear channel assessment (CCA)) before communicating to determine whether the shared channel is available. CCA may include an energy detection process to determine whether there are any other active transmissions. For example, a device may infer that a change in a received signal strength indicator (RSSI) of a power meter indicates that the channel is occupied. Specifically, a signal power concentrated in a particular bandwidth and exceeding a predetermined noise floor may indicate another wireless transmitter. CCA may also include detection of a particular sequence that indicates channel usage. For example, another device may send a particular preamble before sending a data sequence. In some cases, the LBT process may include a wireless node adjusting its own backoff window based on the amount of energy detected on the channel or acknowledgement / negative acknowledgement (ACK / NACK) feedback for its own transmitted packets as a proxy for collisions.

[0053] Generally, four categories of LBT procedures have been proposed for sensing a shared channel for signals that may indicate that the channel is already occupied. In the first category (CAT 1 LBT), LBT or CCA is not applied to detect occupancy of the shared channel. The second category (CAT 2 LBT), which may also be referred to as shortened LBT, single-shot LBT, or 25-μs LBT, is provided to a node to perform CCA for detecting energy above a predetermined threshold or detecting a message or preamble occupying the shared channel. CAT 2 LBT performs CCA without using a random backoff operation, which results in its length being shortened relative to the next category.

[0054] The third category (CAT 3LBT) performs CCA to detect energy or messages on the shared channel, but also uses random backoff and a fixed contention window. Therefore, when a node initiates CAT 3LBT, CAT 3LBT performs a first CCA to detect occupancy of the shared channel. If the shared channel is idle during the first CCA, the node can continue to transmit. However, if the first CCA detects a signal occupying the shared channel, the node selects a random backoff based on the fixed contention window size and performs an extended CCA. If the shared channel is detected to be idle during the extended CCA and the random number has been decremented to 0, the node can start transmitting on the shared channel. Otherwise, the node decrements the random number and performs another extended CCA. The node will continue to perform extended CCAs until the random number reaches 0. If the random number reaches 0 without any extended CCA detecting channel occupancy, the node can transmit on the shared channel. If in any extended CCA, the node detects channel occupancy, the node can reselect a new random backoff based on the fixed contention window size to start the countdown again.

[0055] The fourth category (CAT 4 LBT) (which may also be referred to as a full LBT process) uses random backoff and a variable contention window size to perform CCA through energy or message detection. For the CAT 4 LBT process, the sequence of CCA detection is similar to the CAT 3 LBT process, except that the contention window size is variable.

[0056] Using a medium-sensing process to compete for access to an unlicensed shared spectrum may result in communication inefficiencies. This may be particularly noticeable when multiple network operating entities (e.g., network operators) attempt to access a shared resource. In a 5G network 100, base stations 105 and UEs 115 may be operated by the same or different network operating entities. In some examples, a single base station 105 or UE 115 may be operated by more than one network operating entity. In other examples, each base station 105 and UE 115 may be operated by a single network operating entity. Requiring each base station 105 and UE 115 of a different network operating entity to compete for shared resources may result in an increase in signaling overhead and communication delays.

[0057] Figure 3 An example of a wireless communication system 300 according to various aspects of the present disclosure is shown. The wireless communication system 300 includes base stations 105, UEs 115, and a core network 130. As shown, at least one of the base stations 105 includes a mobile base station 105x. The wireless communication system 300 may include or correspond to the wireless communication network 100. In some examples, the wireless communication system 300 may be an LTE, LTE-Advanced (LTE-A) network, or an NR network. In some cases, the wireless communication system 300 may support enhanced broadband communication, ultra-reliable (i.e., mission-critical) communication, low-latency communication, and communication with low-cost and low-complexity devices.

[0058] Base stations 105, including mobile base stations 105x, can communicate wirelessly with UEs 115 via one or more base station antennas. Each base station 105 provides communication coverage for a corresponding geographic coverage area 110. The radio access link 125 shown in the wireless communication system 300 can include uplink transmissions from the UE 115 to the base station 105, or downlink transmissions from the base station 105 to the UE 115. According to various techniques, control information and data can be multiplexed on the uplink channel or the downlink. For example, time division multiplexing (TDM) techniques, frequency division multiplexing (FDM) techniques, or hybrid TDM-FDM techniques can be used to multiplex control information and data on the downlink channel. In some examples, the control information transmitted during the TTI of the downlink channel can be distributed in a cascaded manner between different control regions (e.g., between a common control region and one or more UE-specific control regions).

[0059] UEs 115 may be dispersed throughout the wireless communication system 300, and each UE 115 may be fixed or mobile. In some cases, UEs 115 may also be able to communicate directly with other UEs (e.g., using a peer-to-peer (P2P) protocol or a device-to-device (D2D) protocol). One or more of the group of UEs 115 utilizing D2D communication may be within the coverage area 110 of a cell. Other UEs 115 in such a group may be outside the coverage area 110 of the cell or unable to receive transmissions from the base station 105. In some cases, the group of UEs 115 communicating via D2D communication may utilize a one-to-many (1:M) system in which each UE 115 transmits to every other UE 115 in the group. In some cases, the base station 105 facilitates resource scheduling for the D2D communication. In other cases, the D2D communication is performed independently of the base station 105.

[0060] Some UEs 115 (such as MTC or IoT devices) may be low-cost or low-complexity devices and may provide automated communication between machines, i.e., machine-to-machine (M2M) communication. M2M or MTC may refer to data communication technologies that allow devices to communicate with each other or with a base station without human intervention. For example, M2M or MTC may refer to communications from devices that integrate sensors or meters to measure or capture information and relay that information to a central server or application (which may utilize the information or present it to a person interacting with the program or application). Some UEs 115 may be designed to collect information or implement automated behavior of machines. Examples of applications for MTC devices include smart metering, inventory monitoring, water level monitoring, instrument monitoring, healthcare monitoring, wildlife monitoring, weather and geological event monitoring, fleet management and tracking, remote security sensing, physical access control, and transaction-based service charging.

[0061] In some cases, MTC devices can operate at a reduced peak rate using half-duplex (one-way) communication. MTC devices can also be configured to enter a power-saving "deep sleep" mode when not engaged in active communications. In some cases, MTC or IoT devices can be designed to support mission-critical functions, and the wireless communication system can be configured to provide ultra-reliable communication for these functions.

[0062] The base stations 105 can communicate with the core network 130 and with each other. For example, the base stations 105 can interface with the core network 130 via a backhaul link 132 (e.g., S1, etc.). The base stations 105 can communicate with each other directly or indirectly (e.g., via the core network 130) via a backhaul link 134 (e.g., X2, etc.). The base stations 105 can perform radio configuration and scheduling to communicate with the UE 115, or can operate under the control of a base station controller (not shown). In some examples, the base stations 105 can be macro cells, small cells, hot spots, etc. The base stations 105 can also be referred to as evolved NodeBs (eNBs) 105.

[0063] The base station 105 can be connected to the core network 130 via the S1 interface. The core network can be an evolved packet core (EPC), which can include at least one mobility management entity (MME), at least one serving gateway (S-GW), and at least one packet data network (PDN) gateway (P-GW). The MME can be a control node that handles signaling between the UE 115 and the EPC. All user Internet Protocol (IP) packets can be transmitted through the S-GW, which itself can be connected to the P-GW. The P-GW can provide IP address allocation and other functions. The P-GW can be connected to network operator IP services. Operator IP services can include the Internet, intranet, IP multimedia subsystem (IMS), and packet switched (PS) streaming services.

[0064] The core network 130 may provide user authentication, access authorization, tracking, IP connectivity, and other access, routing, or mobility functions. At least some of the network devices (such as the base station 105) may include subcomponents (such as access network entities), which may be examples of access node controllers (ANCs). Each access network entity may communicate with multiple UEs 115 through multiple other access network transport entities, each of which may be an example of a smart radio head or a transmit / receive point (TRP). In some configurations, the various functions of each access network entity or base station 105 may be distributed across various network devices (e.g., a radio head and an access network controller) or consolidated into a single network device (e.g., a base station 105).

[0065] Although some networks (e.g., wireless local area networks (WLANs)) can use frequencies up to 4 GHz, the wireless communication system 300 can operate in the ultra-high frequency (UHF) frequency region using a frequency band from 700 MHz to 2600 MHz (2.6 GHz). This region may also be referred to as the decimeter band because the wavelengths range from approximately 1 decimeter to 1 meter long. UHF waves may primarily propagate via line of sight and may be blocked by buildings and environmental features. However, the waves may be sufficient to penetrate walls to provide service to UEs 115 located indoors. Compared to transmissions using the lower frequencies (and longer wavelengths) of the high frequency (HF) or very high frequency (VHF) portions of the spectrum, transmissions using UHF waves are characterized by smaller antennas and shorter distances (e.g., less than 100 km). In some cases, the wireless communication system 300 may also utilize the extremely high frequency (EHF) portion of the spectrum (e.g., from 30 GHz to 300 GHz). This region may also be referred to as the millimeter band because the wavelengths range from approximately 1 millimeter to 1 centimeter long. Therefore, EHF antennas may be smaller and more closely spaced than UHF antennas. In some cases, this may facilitate the use of antenna arrays (eg, for directional beamforming) within UE 115. However, EHF transmissions may be subject to greater atmospheric attenuation than UHF transmissions and thus have a shorter range.

[0066] Thus, the wireless communication system 300 can support mmW communications between the UE 115 and the base station 105. Devices operating in the mmW or EHF bands can have multiple antennas to implement beamforming. That is, the base station 105 can use multiple antennas or antenna arrays to perform beamforming operations in order to perform directional communications with the UE 115. Beamforming (which can also be referred to as spatial filtering or directional transmission) is a signal processing technique that can be used at a transmitter (e.g., the base station 105) to shape or steer an entire antenna beam in the direction of a target receiver (e.g., the UE 115). This can be achieved by combining elements in the antenna array in such a way that signals transmitted at certain angles experience constructive interference, while other signals experience destructive interference.

[0067] A MIMO wireless system uses a transmission scheme between a transmitter (e.g., base station 105) and a receiver (e.g., UE 115) in which both the transmitter and the receiver are equipped with multiple antennas. Some portions of wireless communication system 300 may use beamforming. For example, base station 105 may have an antenna array with multiple rows and columns of antenna ports that base station 105 may use for beamforming in communications with UE 115. Signals may be transmitted multiple times in different directions (e.g., each transmission may be beamformed differently). A mmW receiver (e.g., UE 115) may attempt multiple beams (e.g., antenna subarrays) when receiving synchronization signals.

[0068] In some cases, the antennas of a base station 105 or a UE 115 may be located within one or more antenna arrays that may support beamforming or MIMO operations. One or more base station antennas or antenna arrays may be collocated at an antenna assembly, such as an antenna tower. In some cases, the antennas or antenna arrays associated with a base station 105 may be located at different geographic locations. The base station 105 may use multiple antennas or multiple antenna arrays to perform beamforming operations in order to facilitate directional communication with the UE 115.

[0069] In some cases, the wireless communication system 300 can be a packet-based network operating according to a layered protocol stack. In the user plane, the communication at the bearer or packet data convergence protocol (PDCP) layer can be IP-based. In some cases, the radio link control (RLC) layer can perform packet segmentation and reassembly to communicate through logical channels. The media access control (MAC) layer can perform priority processing and multiplex logical channels into transport channels. The MAC layer can also use hybrid ARQ (HARQ) to provide retransmission at the MAC layer to improve link efficiency. In the control plane, the radio resource control (RRC) protocol layer can provide the establishment, configuration and maintenance of the RRC connection between the UE 115 and the base station 105 or the core network 130 supporting the radio bearer of the user plane data. At the physical (PHY) layer, the transport channel can be mapped to the physical channel.

[0070] Time intervals in LTE or NR can be expressed in multiples of a basic time unit (which can be a sampling period of Ts = 1 / 30,720,000 seconds). Time resources can be organized according to radio frames of length 10 ms (Tf = 307200Ts), which can be identified by a system frame number (SFN) ranging from 0 to 1023. Each frame can include 10 1 ms subframes numbered from 0 to 9. The subframe can be further divided into two 0.5 ms time slots, each of which contains 6 or 7 modulation symbol periods (depending on the length of the cyclic prefix appended to each symbol). Excluding the cyclic prefix, each symbol contains 2048 sampling periods. In some cases, the subframe can be the smallest scheduling unit, also known as TTI. In other cases, the TTI can be shorter than the subframe or can be dynamically selected (for example, in a short TTI burst or in a selected component carrier using a short TTI).

[0071] A resource element may consist of one symbol period and one subcarrier (e.g., a 15 kHz frequency range). A resource block may contain 12 consecutive subcarriers in the frequency domain and 7 consecutive OFDM symbols (1 slot) in the time domain (for a normal cyclic prefix in each OFDM symbol), or 84 resource elements. The number of bits carried by each resource element may depend on the modulation scheme (the configuration of symbols that may be selected during each symbol period). Therefore, the more resource blocks a UE receives and the higher the modulation scheme order, the higher the data rate may be.

[0072] The wireless communication system 300 may support operation on multiple cells or carriers, a feature that may be referred to as carrier aggregation (CA) or multi-carrier operation. A carrier may also be referred to as a component carrier (CC), layer, channel, etc. The terms "carrier," "component carrier," "cell," and "channel" are used interchangeably herein. A UE 115 may be configured with multiple downlink CCs and one or more uplink CCs for carrier aggregation. Carrier aggregation may be used with both FDD and TDD component carriers.

[0073] In some cases, the wireless communication system 300 can utilize an enhanced component carrier (eCC). An eCC is characterized by one or more features, including: wider bandwidth, shorter symbol duration, shorter TTI, and modified control channel configuration. In some cases, an eCC can be associated with a carrier aggregation configuration or a dual connectivity configuration (e.g., when multiple serving cells have suboptimal or non-ideal backhaul links). An eCC can also be configured for use in unlicensed spectrum or shared spectrum (where multiple operators are allowed to use the spectrum). An eCC characterized by a wide bandwidth can include one or more segments that can be used by UEs 115 that are unable to monitor the entire bandwidth or prefer to use a limited bandwidth (e.g., to save power).

[0074] In some cases, an eCC may utilize a different symbol duration than other CCs, which may include using a reduced symbol duration compared to the symbol duration of other CCs. A shorter symbol duration is associated with an increased subcarrier spacing. A device utilizing an eCC (such as a UE 115 or a base station 105) may transmit a wideband signal (e.g., 20, 40, 60, 80 MHz, etc.) with a reduced symbol duration (e.g., 16.67 microseconds). A TTI in an eCC may consist of one or more symbols. In some cases, the TTI duration (i.e., the number of symbols in a TTI) may be variable.

[0075] Shared RF spectrum bands can be used for NR shared spectrum systems. For example, NR shared spectrum can utilize any combination of licensed spectrum, shared spectrum, and unlicensed spectrum. The flexibility of eCC symbol duration and subcarrier spacing can allow the use of eCC on multiple spectrums. In some examples, NR shared spectrum can improve spectrum utilization and spectrum efficiency, particularly through dynamic vertical (e.g., across frequency) and dynamic horizontal (e.g., across time) sharing of resources.

[0076] In some cases, the wireless communication system 300 can utilize licensed and unlicensed radio spectrum bands. For example, the wireless communication system 300 can adopt LTE licensed assisted access (LTE-LAA) or LTE unlicensed (LTE U) radio access technology, or technology in an unlicensed band such as the 5 GHz industrial, scientific and medical (ISM) band. When operating in an unlicensed radio spectrum band, wireless devices such as base stations 105 and UEs 115 can adopt an LBT process to ensure that the channel is idle before sending data. In some cases, operations in the unlicensed band can be based on a CA configuration together with CCs operating in the licensed band. Operations in the unlicensed spectrum can include downlink transmissions, uplink transmissions, or both. Duplexing in the unlicensed spectrum can be based on FDD, TDD, or a combination of both.

[0077] In some cases, in addition to backhaul and access traffic between multiple base stations 105, a cellular radio access technology (RAT) (such as a mmW-based RAT) can be used to support access traffic between UE 115 and base station 105. In addition, both access and backhaul traffic can share the same resources (e.g., in the case of integrated access and backhaul (IAB)). As cellular technology evolves due to enhanced wireless link capacity and reduced latency, such wireless backhaul or IAB solutions may become increasingly beneficial. In addition, the use of wireless backhaul links can reduce the cost of dense small cell deployments.

[0078] Thus, the use of a RAT may enable wireless backhaul communications at a wireless node (such as a base station 105, an access node, or a UE 115) using one or more node functions. In addition, multiple wireless nodes may communicate in the backhaul network using scheduling aligned with the frame structure. For example, a wireless node (e.g., a UE 115 or a base station 105) may establish a link with a different wireless node (e.g., a UE 115 or a base station 105) using a RAT that supports a synchronized frame structure (such as an mmW RAT). The wireless node may identify a first set of common resources for access or backhaul communications. The common resources may be allocated for common use by all wireless nodes of the wireless backhaul network. The wireless node may identify a second set of partitioned resources that may be used for access or backhaul communications. The second set of partitioned resources may be partitioned into subsets of resources, each subset being allocated for use by a selected subset of the wireless nodes of the wireless backhaul network.

[0079] Figure 4 4 is a block diagram of an example wireless communication system 400 for resource management in an IAB network. In some examples, the wireless communication system 400 can implement aspects of the wireless communication network 100 or the wireless communication system 300. For example, the wireless communication system 400 can include a first node 405 (e.g., a mobile wireless node), a second node 407 (e.g., a static node), a third node 409 (e.g., a static node), a control node 410, and a wireless device 415 (e.g., a UE). Each of the first node 405, the second node 407, the third node 409, and the control node 410 can include or correspond to the base station 105, such that the first node 405, the second node 407, the third node 409, or the control node 410 includes one or more of the same components, is configured to perform one or more operations, or both, as described with reference to the base station 105. The wireless communication system 400 can include an IAB control node (such as the control node 410) and one or more IAB nodes (such as the first node 405, the second node 407, and the third node 409). The IAB control node can be configured as an access node or anchor node with a wired connection to the core network. For example, the IAB control node may include an enhanced gNB node with the function of controlling the IAB network. One or more IAB nodes may be configured as access nodes that relay traffic from / to the anchor node over one or more hops. For example, the IAB node may be an L2 relay node that includes mobile termination (MT) and distribution unit (DU) functionality.

[0080] The wireless device 415 may include or correspond to the UE 115, such that the wireless device 415 includes one or more of the same components, is configured to perform one or more operations, or both, as described with reference to the UE 115. Although one UE and three base stations are shown, in other implementations, the wireless communication system 400 may include multiple UEs 115, fewer than or more than three base stations 105, or both. Additionally or alternatively, although the wireless communication system 400 is described as having a single mobile node (e.g., 405), in other implementations, the wireless communication system 400 may include multiple mobile nodes.

[0081] The wireless device 415 (e.g., UE) includes a processor 416, a memory 417, a transmitter 418, and a receiver 419. The processor 416 may be configured to execute instructions stored in the memory 417 to perform the operations described herein. In some implementations, the processor 416 includes or corresponds to the controller / processor 280, and the memory 417 includes or corresponds to the memory 282. In addition to the instructions stored in the memory 417, the memory 417 may be configured to store communication resource information to enable the wireless device 415 to communicate with the first node 405 or another node.

[0082] The transmitter 418 is configured to send data to one or more other devices, and the receiver 419 is configured to receive data from one or more other devices. For example, the transmitter 418 may send data via a network such as a wired network, a wireless network, or a combination thereof, and the receiver 419 may receive data via a network such as a wired network, a wireless network, or a combination thereof. For example, the wireless device 415 may be configured to send or receive data via a direct device-to-device connection, a local area network (LAN), a wide area network (WAN), a modem-to-modem connection, the Internet, an intranet, an extranet, a cable transmission system, a cellular communication network, any combination of the foregoing, or any other communication network now known or later developed that allows two or more electronic devices to communicate therein. In some implementations, the transmitter 418 and the receiver 419 may be replaced with a transceiver. Additionally or alternatively, the transmitter 418, the receiver 419, or both may include or correspond to reference Figure 2 One or more components of UE 115 are described.

[0083] The first node 405 comprises a mobile node such as Figure 3The first node 405 includes a processor 430, a memory 432, a transmitter 434, a receiver 436, a mobile termination 437, a distribution unit 438, a resource selector 439, a handover initiator 440, a comparator 441, and a timer 442. The processor 430 can be configured to execute instructions stored in the memory 432 to perform the operations described herein. In some implementations, the processor 430 includes or corresponds to the controller / processor 240, and the memory 432 includes or corresponds to the memory 242. In addition to the instructions stored in the memory 432, the memory 432 can be configured to store one or more communication resource sets 444 (such as communication resource information) and mobility state 446 (such as mobility state information). The one or more communication resource sets 444 can enable the first node 405 to communicate with one or more other devices of the wireless communication network 400, as further described herein. The mobility state 446 can include or correspond to the mobility state of the first node 405 or another device or node of the wireless communication system 400. For example, the mobility state 446 may indicate whether the first node 405 is a mobile node or a static node. As another example, the mobility state 446 may indicate whether another node (such as the second node 407 or the third node 408) is a mobile node or a static node.

[0084] The transmitter 434 is configured to send data to one or more other devices, and the receiver 436 is configured to receive data from one or more other devices. For example, the transmitter 434 may send data via a network such as a wired network, a wireless network, or a combination thereof, and the receiver 436 may receive data via a network such as a wired network, a wireless network, or a combination thereof. For example, the first node 405 may be configured to send or receive data via a direct device-to-device connection, a LAN, a WAN, a modem-to-modem connection, the Internet, an intranet, an extranet, a cable transmission system, a cellular communication network, any combination of the foregoing, or any other communication network now known or later developed that allows two or more electronic devices to communicate therein. In some implementations, the transmitter 434 and the receiver 436 may be replaced with a transceiver. Additionally or alternatively, the transmitter 434, the receiver 436, or both may include or correspond to reference Figure 2 One or more components of base station 105 are described.

[0085] Mobile Termination (MT) 437 is configured as a node scheduled relative to a parent node or control node 410. In some implementations, MT 437 is configured to provide the UE functionality of a distribution unit of first node 405 relative to another node (such as second node 407, third node 409, or control node 410). Distribution Unit (DU) 438 is configured as a scheduling node that schedules child nodes (e.g., wireless device 415 or child IAB node) of first node 405. In some implementations, DU 438 is configured to provide the base station functionality of a MT of node 405 relative to wireless device 415 or another node (such as second node 407 or third node 409). Resource selector 439 is configured to select a set of one or more communication resources (e.g., 444) for use by first node 405. The selected set of one or more communication resources may include hard resources, soft resources, or a combination thereof. Hard resources include communication resources that DU 438 can assume it can use regardless of the configuration of MT 437. Soft resources include communication resources whose availability is controlled by a parent node through explicit or implicit instructions. In some implementations, MT 437 may include or correspond to a first processor (e.g., 430), and DU 438 may include or correspond to a second processor (e.g., 430) different from the first processor.

[0086] The handover initiator 440 is configured to initiate or control a handover operation corresponding to the first node 405, in which the first node is changed, i.e., switched from the first parent node to the second parent node. For example, the second node 407 can be the parent node of the first node 405, and a handover operation from the second node 407 to the third node 409 can be performed to make the third node 409 the parent node of the first node 405. The comparator 441 is configured to perform one or more comparisons, such as comparisons between parameters and thresholds or standards. The result of the comparison can indicate whether a condition is met, such as the condition for the resource selector 439 to select a communication resource set (e.g., 444) from a plurality of communication resource sets. The timer 442 is configured to determine or identify the expiration of a time period.

[0087] Control node 410 includes a processor 450, a memory 452, a transmitter 454, and a receiver 456. In some implementations, processor 450 may be configured to execute instructions stored in memory 452 to perform the operations described herein. In addition to the instructions stored in memory 452, memory 452 may be configured to store communication resource information 460 and one or more parameters 462. Communication resource information 460 may enable control node 410 to communicate with one or more other devices of wireless communication system 400. Additionally or alternatively, communication resource information 460 may include or correspond to one or more communication resource sets of wireless communication system 400 allocated by control node 410 (or a core network) to one or more other nodes, as further described herein. One or more parameters 462 may include at least one parameter or at least one criterion related to the selection of a communication resource set, as further described herein. As illustrative and non-limiting examples, one or more parameters 462 may include a mobility state of a distribution unit of a mobile wireless node, a load, a topological state of the distribution unit, a topological state of a parent node of the mobile wireless node, a time period, another parameter, or a combination thereof.

[0088] The transmitter 554 is configured to send data to one or more other devices, and the receiver 556 is configured to receive data from one or more other devices. For example, the transmitter 554 may send data via a network such as a wired network, a wireless network, or a combination thereof, and the receiver 556 may receive data via a network such as a wired network, a wireless network, or a combination thereof. For example, the control node 410 may be configured to send or receive data via a direct device-to-device connection, a LAN, a WAN, a modem-to-modem connection, the Internet, an intranet, an extranet, a cable transmission system, a cellular communication network, any combination of the foregoing, or any other communication network now known or later developed that allows two or more electronic devices to communicate therein. In some implementations, the transmitter 454 and the receiver 456 may be replaced with a transceiver. Additionally or alternatively, the transmitter 454, the receiver 456, or both may include or correspond to reference Figure 2 One or more components of base station 105 are described.

[0089] The central unit (CU) 458 is configured as a central entity that can control the IAB network through configuration. For example, the CU 458 can allocate one or more communication resources to nodes in the IAB network. In some implementations, the CU 458 maintains RRC / PDCP layer functions. The distribution unit (DU) 459 is configured as a scheduling node that schedules subnodes. The DU 459 can be configured to perform RLC / MAC / PHY layer functions.

[0090] The second node 407 and the third node 409 may include one or more of the same components, be configured to perform one or more operations, or both, as described with reference to the first node 405, the control node 410, or both. For example, in some implementations, each of the second node 407 and the third node 409 may include an MT (e.g., 437) and a DU (e.g., 438, 459). Additionally or alternatively, the second node 407 and the third node 409, or both, may include or correspond to the reference Figure 2 One or more components of base station 105 are described.

[0091] During operation of the wireless communication system 400, a set of communication resources (such as one or more communication resources in the time domain) can be dedicated to the use or control of a mobile IAB node (such as the first node 405). If the mobile IAB node (such as the first node 405) changes its parent node, if the network topology changes, or both, the mobile IAB node can maintain ownership of the one or more communication resources. For example, the control node 410 generates and sends a first resource indicator 480 corresponding to a first set of communication resources for use by the mobile distribution unit. In some implementations, to generate the first resource indicator 480, the control node 410 receives a mobility state indicator 486 of the first node 405 from the first node 405. In some such implementations, the control node 410 can determine a first set of communication resources corresponding to the first resource indicator 480 based on the mobility state indicator 486.

[0092] The first node 405 receives a first resource indicator 480 corresponding to a first set of communication resources (eg, 444) for use by a distribution unit 438, such as a mobile distribution unit. The first node 405 may communicate with the wireless device 415 via a sub-link using the first set of communication resources.

[0093] In some implementations, communicating with the wireless device 415 includes communicating with the wireless device 415 using a first set of communication resources when wirelessly connected to a first parent node (e.g., 407), and communicating with the wireless device 415 using the first set of communication resources when wirelessly connected to a second parent node (e.g., 409). Additionally or alternatively, communicating with the wireless device 415 includes communicating with the wireless device 415 using the first set of communication resources when the wireless backhaul communication network has a first topology, and communicating with the wireless device 415 using the first set of communication resources when the wireless backhaul communication network has a second topology. Note that although the first node 405 is described as communicating with one wireless device via a sub-link, in other implementations, the first node 405 can communicate with multiple wireless devices, one or more sub-nodes, or a combination thereof via multiple sub-links.

[0094] In some implementations, the first node 405 identifies the mobility state 446 of the first node 405 as mobile. Based on the mobility state 446, the resource selector 439 selects a first set of communication resources for use by the distribution unit 438. Additionally or alternatively, the first node 405 receives one or more parameters 482 corresponding to the first set of communication resources from the control node 410. Note that, as indicated by the dashed box, the one or more parameters 482 may optionally be received. The first node 405 may determine whether one or more conditions corresponding to the one or more parameters are satisfied. For example, the comparator 441 or the timer 442 may determine or indicate whether the one or more conditions are satisfied, and the resource selector 439 may select one of the communication resource sets (e.g., 444) based on the indication from the comparator 441 or the timer 442.

[0095] In some implementations, the control node 410 generates and sends a second resource indicator 484 corresponding to the second set of communication resources for use by the mobile distribution unit. The first node 405 can identify the second resource indicator 484 corresponding to the second set of communication resources. In some such implementations, the first node 405 can determine which set of the first set of communication resources or the second set of communication resources to use for communication.

[0096] In some implementations, the control node 410 determines a communication resource set (e.g., a first communication resource set) and divides the communication resource set into a first resource subset and a second resource subset. The first resource subset can be used by one or more mobile wireless nodes assigned to the wireless backhaul communication network, while the second resource subset can be used by one or more fixed wireless nodes assigned to the wireless backhaul communication network.

[0097] In some implementations, the first node 405 determines to change from being wirelessly connected to a first parent node (e.g., 407) of the wireless backhaul communication network to being wirelessly connected to a second parent node (e.g., 409). In some such implementations, based on the change from being wirelessly connected to the first parent node to being wirelessly connected to the second parent node, the first node 405 may automatically utilize the first set of communication resources. Alternatively, the first node 405 may send a request 488 for the first set of communication resources during or after a handover operation that changes the first node 405 from being connected to the first parent node to being connected to the second parent node. Note that, as indicated by the dashed box, sending the request 488 may be optional. In such implementations, the control node 410 may determine whether to authorize the first node 405 to use the first set of communication resources after the handover operation. While the first node 405 is wirelessly connected to the second parent node, the control node 410 may send an authorization 490 to the first node 405 to use the first set of communication resources. Note that, as indicated by the dashed box, receiving the authorization 490 may be optional. Additionally or alternatively, the control node 410 sends a second resource indicator 484 corresponding to the second set of communication resources to the first node 405. In such an implementation, the first node 405 may use the second set of communication resources after the handover operation, or may determine whether to use the first set of communication resources or the second set of communication resources, such as based on one or more parameters 482.

[0098] In some implementations, the first node 405 may send one or more availability indicators 492. Note that, as indicated by the dashed box, the sending of the availability indicator 492 may be optional. The first node 405 may send a first availability indicator (e.g., 492) to the second node 407 indicating that at least one communication resource in the first set of communication resources is available for use by the second node 407. The at least one communication resource may include soft resources allocated to the first node 405 or the second node 407. Additionally or alternatively, the first node 405 may send a second availability indicator (e.g., 492) to the third node 409 indicating that at least one communication resource in the first set of communication resources is available for use by the third node 409. In some such implementations, the first node 405 may send a mobility state indicator 486 to the second node 407, the third node 409, or both.

[0099] In some implementations, a control node 410 (e.g., a control unit 458) receives mobility state information for one or more DUs (e.g., 438) of a node of a wireless communication system 400 and, based on the mobility state information, determines and indicates a resource configuration for the node via a first resource indicator 480. The first resource indicator 480 may indicate to the first node 405 that the DU 438 may use the allocated resources without reconfiguration if the first node 405 changes parent nodes. In some implementations, the control unit 458 may optionally provide at least one parameter 462, included in the one or more parameters 482, to regulate the behavior of a mobile DU, such as the DU 438. The one or more parameters 482 may indicate or specify at least one criterion or criteria for the first node 405 to maintain ownership of the allocated communication resources. For example, if the mobility state of the DU 438 or parent node indicates a mobile node, the one or more parameters 482 may instruct the first node 405 to maintain the allocated communication resources. As another example, if the load (e.g., data rate) is greater than or equal to a load threshold, then one or more parameters 482 may instruct the first node 405 to maintain the allocated communication resources. As another example, based on the topological state of the DU 438 or parent node (e.g., number of hops, number of child nodes, or level), one or more parameters 482 may instruct the first node 405 to maintain the allocated communication resources. As another example, if a time period based on the timer 442 has not expired, then one or more parameters 482 may instruct the first node 405 to maintain the allocated communication resources. As another example, one or more parameters 482 may indicate that multiple conditions will be met, such as based on a load greater than or equal to a load threshold for a period of time.

[0100] In some implementations, the DU 438 may select to use a first communication resource set corresponding to the first resource indicator 480. For example, the DU 438 may select the first communication resource set based on the DU's mobility state 446. In such an implementation, the first node 405 may have received multiple communication resource sets from the CU 458, such as a first communication resource set corresponding to the first resource indicator 480 and a second communication resource set corresponding to the second resource indicator 484. In some implementations, the first resource indicator 480 and the second resource indicator 484 may be included in the same message. In addition, the message may include one or more parameters 482. At least one of the communication resource sets may be indicated as being allocated as a mobility-based set, so that the DU 438 can choose to maintain ownership of the set.

[0101] In some implementations, the communication resource set allocated to a mobile DU, such as DU 438, may include one or more hard resources. In such implementations, the first node 405 may continue to use the same hard resources as its child node before, after, or both. In some implementations, the CU 458 may send a grant 490 to the first node 405 indicating that the DU 438 may use the same hard resources. The grant 490 may be in response to the request 488. Alternatively, unless the CU 458 configures a new communication resource set for the DU 438, the DU 438 may assume that it may reuse the same allocated resources.

[0102] In some implementations, the communication resource set allocated to a mobile DU, such as DU 438, may include one or more hard resources owned or controlled by DU 438. The communication resource set may also include one or more soft resources that can be used as secondary users by one or more fixed nodes (e.g., DUs of fixed nodes). The availability of the one or more soft resources may be determined by the child nodes. For illustration, if there are no child mobile IAB nodes, the fixed node may use the one or more soft resources. However, if there are child mobile IAB nodes (such as first node 405), the fixed IAB node may use the one or more soft resources if use of the one or more soft resources does not affect communication between the child mobile IAB node and its own child nodes, or if the child mobile IAB node explicitly releases the one or more soft resources. In such implementations, a mobile IAB node, such as first node 405, sends a mobility state indicator 468 to indicate to other nodes, such as second node 407 and third node 409, that it is a mobile IAB node. For illustration, if the fixed IAB node does not receive a mobility state indicator indicating the presence of the mobile IAB node as a child node, the fixed IAB node may use the one or more soft resources. Alternatively, if the fixed IAB node receives a mobility state indicator indicating that a mobile IAB node exists as a child node, the fixed IAB node may use the one or more soft resources based on an explicit indication received from the mobile IAB node, such as an availability indicator indicating that the one or more soft resources are available for use by the fixed IAB node or another IAB.

[0103] In some implementations, the set of communication resources allocated to a mobile DU, such as DU 438, may include one or more hard resources owned or controlled by DU 438, and the one or more hard resources may be used for control signals, broadcast signals, or both. Thus, at least some of the resources used for control or broadcast may be dedicated to the mobile DU (e.g., 438), which may reduce the amount of service interruption experienced by the mobile IAB node in the event of a link failure. The control signal may include or correspond to a downlink control indicator (DCI), an uplink control indicator (UCI), a MAC-CE, or a combination thereof. In such an implementation, the associated resources may be orthogonal (e.g., time division multiplexed) to control resources used by one or more fixed nodes on a TD to avoid half-duplex conflicts. The broadcast signal may include a synchronization signal block (SSB), remaining minimum system information (RMSI), a random access channel (RACH) opportunity / message, or a combination thereof. Note that in some implementations, at least a portion of the one or more hard resources used for broadcast signals may be shared by both fixed and mobile IAB nodes. Additionally or alternatively, the communication resource set allocated to a mobile DU such as DU 438 may include at least one soft resource controlled by a parent node of the mobile IAB. The soft resource(s) may be primarily used for data communications, such as non-control signals or non-broadcast signals.

[0104] therefore, Figure 4 Systems, devices, and methods are described in which resource management of an IAB network takes into account one or more mobile IAB nodes. In an IAB network having one or more mobile IAB nodes, the IAB node can advantageously maintain control of one or more allocated communication resources before, during, or after a handoff of the mobile IAB node from one parent node to another, or before, during, or after a network topology change. Maintaining control of the allocated resources in these situations can reduce resource conflicts (such as timing conflicts), which can reduce the number of service interruptions for the mobile IAB node, its children, and its children.

[0105] refer to Figures 5A-5C , Figure 5A and Figure 5B shows different configurations of IAB network topologies, and Figure 5C An IAB network resource sharing method designated as 590 is shown. For example, Figure 5A A first topology 500 is shown, and Figure 5BA second topology 550 is shown. Networks 100, 300, and 400 can employ topologies 500 and 550. For example, BS 105 and UE 115 can be configured to form (multiple) logical spanning tree configurations as shown in topologies 500 and 550 for transmitting access traffic, backhaul traffic, or both. Topologies 500 and 550 can include control node 410, first node 405, second node 407, third node 409, wireless device 415, and UE 115. Control node 410 can be coupled to backhaul link 134, such as an optical fiber link, for communication with a core network (e.g., core network 130).

[0106] The topologies 500, 550 include a plurality of logical levels 502, 504, 506. In some other implementations, the topologies 500, 550 may include any suitable number of levels (such as two, three, four, five, six, or more). Each level 502, 504, 506 may include a combination of UEs 115 and BSs 105 interconnected by logical links. For example, the logical link between a BS 105 and a UE 115 may correspond to a wireless access link 125, while the logical link 404 between the two BSs 105 may correspond to a wireless backhaul link 134. The BSs 105 and the UEs 115 may be referred to as relay nodes in the topologies 500, 550.

[0107] A node in level 502 (e.g., BS 105) may act as a relay for a node in level 504, e.g., to relay backhaul traffic between the node and control node 410. Similarly, a node in level 504 (e.g., BS 105) may act as a relay for a node in level 506. For example, a node in level 502 is a parent node of a node in level 504, and a node in level 506 is a child node of a node in level 504.

[0108] When communicating with a base station (BS) 105 or a UE 115 in level 506, a BS 105 (e.g., 409) in level 504 can act as an access node. Alternatively, when communicating with a BS 105 in level 502, the BS 105 can act as a UE. When communicating with a node in a higher level or with a node with a smaller number of hops to the control node 410, the communication is referred to as UL communication. When communicating with a node in a lower level or with a node with a larger number of hops to the control node 410, the communication is referred to as DL communication. In some implementations, the control node 410 can allocate resources for the link.

[0109] refer to Figure 5C, illustrates an IAB network resource sharing method 590 according to one or more aspects of the present disclosure and is generally designated 590. The method 590 illustrates resource partitioning used in topologies 500, 550. Figure 5C , the x-axis represents time in some constant units. Method 590 divides resources in an IAB network (e.g., network 100, wireless communication system 300 or 400) into resources 592, 594, 596. Resources 592, 594, 596 may include time-frequency resources. For example, each resource 592, 594, 596 may include multiple symbols in time (e.g., OFDM symbols), multiple subcarriers in frequency, or both. In some implementations, each resource 592, 594, 596 shown may correspond to a subframe, a time slot or subslot, or a TTI, which may carry one MAC layer transport block.

[0110] As an example, the method 590 may allocate resources 592 to a link between the control node 410 and a node at level 502, and a link between a node at level 504 and a node at level 506. The method 590 may allocate resources 594 to a link for transmitting UL or DL traffic between a node at level 502 and a node at level 504. The method 590 may allocate resources 596 to a mobile node, such as the first node 405. The time division of resources in an alternating manner shown in the method 590 may reduce interference between different levels 502, 504, 506, overcome half-duplex constraints, reduce transmit-receive gap periods, or a combination thereof.

[0111] refer to Figure 5A , topology 500 includes a first node 405 linked to a second node 407 using resource 594. The first node 405 is also linked to a wireless device 415 and a UE 115 using resource 596. Figure 5A As shown by the arrow marked as "mobile", the first node 405 is a mobile IAB node, which is mobile and can be a parent node. Figure 5B , the first node 405 is no longer coupled to the second node 407 as a parent node, but is instead coupled to the third node 409 as a parent node. For illustration, topology 550 includes the first node 405 linked to the third node 409 using resources 592. The first node 405 is also linked to the wireless device 415 and the UE 115 using resources 596. By linking to the wireless device 415 and the UE 115 using resources 596, the mobile wireless node can avoid resource conflicts and service interruptions when the first node 405 changes parent nodes (e.g., changes parent nodes at different levels).

[0112] Figure 6 and Figure 7is a block diagram illustrating example blocks executed by a base station configured according to aspects of the present disclosure. Figure 9 The example blocks are described with reference to the base station 105 shown in FIG. 1 , which may include or correspond to Figure 4 The base station 105 or the first node 405, the second node 407, the third node 409 or the control node 410. Figure 9 is a block diagram illustrating a base station 105 configured according to one aspect of the present disclosure. The base station 105 includes Figure 2 Base station 105 or Figure 4 The structure, hardware, and components shown in FIG. 1 are first node 405, second node 407, third node 409, or control node 410. For example, the base station 105 includes a controller / processor 240 that operates to execute logic or computer instructions stored in a memory 242 and to control components of the base station 105 that provide the features and functions of the base station 105. Under the control of the controller / processor 240, the base station 105 transmits and receives signals via wireless radios 901a-t and antennas 234a-t. The wireless radios 901a-t include various components and hardware, such as Figure 2 As shown in FIG. 1 , the base station 105 includes modulators / demodulators 232a-t, a transmit processor 220, a TX MIMO processor 230, a MIMO detector 236, and a receive processor 238. As shown, the memory 242 may include IAB communication logic 902, communication resource information 903, mobility state information 904, a comparator 905, and a timer 906. The IAB communication logic 902 may include or correspond to the MT 437, the DU 438, the CU 458, and the DU 459. In some aspects, the IAB communication logic 902 may include or correspond to the processors 430 and 450. The communication resource information 903 may include or correspond to one or more communication resource sets 444, the communication resource information 460, the first resource indicator 480, or the second resource indicator 484. The mobility state information 904 may include or correspond to the mobility state 446 or the mobility state indicator 486. The comparator 905 and the timer 906 may include or correspond to the comparator 441 and the timer 442, respectively.

[0113] The IAB communication logic 902 may be implemented via hardware, software, or a combination thereof. For example, the IAB communication logic 902 may be implemented as a processor, a circuit, or instructions stored in the memory 242 and executed by the processor 240. The IAB communication logic 902 may be used in various aspects of the present disclosure. For example, the IAB communication logic 902 is configured to maintain multiple synchronization references, provide synchronization information associated with the synchronization reference to other nodes (e.g., including timing or frequency), receive synchronization information from other nodes, receive synchronization adjustment commands, adjust the synchronization reference based on the received synchronization information or the received command, receive scheduling information for communicating with a higher-level node (e.g., gap period, transmit timing, or receive timing), determine scheduling information for communicating with a lower-level node, or communicate with a node based on the received scheduling information and the determined scheduling information. The base station 105 may receive information from a node such as a node that receives synchronization information from a node that receives synchronization information or a command that receives synchronization adjustment commands. Figure 8 The UE shown, UE 115, receives signals from or sends signals to, or receives signals from or sends signals to, another base station.

[0114] refer to Figure 6 At block 600, a mobile wireless node of a wireless backhaul communication network determines a first set of communication resources for use by the mobile wireless node. For example, a mobile wireless device, such as base station 105, may utilize wireless radios 901a-t and antennas 234a-t to receive a first resource indicator for communication with the wireless device. The first set of communication resources may include time domain resources. In some implementations, the first set of communication resources may include hard resources configured for use independent of a mobile termination configuration of the mobile wireless node. Additionally or alternatively, the first set of communication resources may include soft resources.

[0115] At block 601, a mobile wireless node communicates with one or more wireless devices using a first set of communication resources via one or more sub-links when the wireless backhaul communication network has a first topology and the wireless backhaul communication network has a second topology. The one or more wireless devices may include or correspond to a UE 115 or a wireless device 415. For example, a mobile wireless node such as a base station 105 may use wireless radios 901a-t and antennas 234a-t to send or receive at least one message to communicate with the one or more wireless devices.

[0116] In some implementations, a block may be included in which the mobile wireless node receives an indication of a plurality of communication resource sets. In some such implementations, a block may be included in which the mobile wireless node identifies a mobility state of the mobile wireless node as mobile. The mobility state may include or correspond to mobility state information 904. In some such implementations, a block may be included in which the mobile wireless node selects a first communication resource set from the plurality of communication resource sets based on the mobility state being mobile. For example, the IAB communication logic 902 may select the first communication resource set from the communication resource information 903.

[0117] In some implementations, communicating with one or more wireless devices may include: communicating with the wireless device using a first set of communication resources by the mobile wireless node while wirelessly connected to a first parent node of the wireless backhaul communication network; and communicating with the wireless device using the first set of communication resources by the mobile wireless node while wirelessly connected to a second parent node of the wireless backhaul communication network. In some implementations, a block may be included in which the mobile wireless node sends a mobility state indicator of the mobile wireless node (indicating whether the mobile wireless node is a mobile wireless node or a stationary mobile node) to a control node of the wireless backhaul communication network. The mobility state indicator may include or correspond to mobility state indicator 486. The first set of communication resources corresponding to the first resource indicator is based on the mobility state indicator of the mobile wireless node. In some implementations, the first resource indicator indicates one or more parameters corresponding to use of the first set of communication resources. As illustrative and non-limiting examples, the one or more parameters may include a mobility state of the mobile wireless node, a load, a topological state of a distribution unit, a topological state of a parent node of the mobile wireless node, a time period, another parameter, or a combination thereof. The one or more parameters may include or correspond to one or more parameters 462.

[0118] In some implementations, a block may be included in which the mobile wireless node receives one or more parameters corresponding to the first set of communication resources. A block may also be included in which the mobile wireless node determines whether one or more conditions corresponding to the one or more parameters are satisfied. For example, the comparator 905, the IAB communication logic 902, or both may determine whether the one or more conditions are satisfied. To illustrate, based on a determination that the one or more conditions are satisfied, the mobile wireless node communicates with the one or more wireless devices using the first set of communication resources.

[0119] In some implementations, a block may be included in which the mobile wireless node identifies a second resource indicator corresponding to a second set of communication resources. The mobile wireless node may determine which of the first set of communication resources and the second set of communication resources to use for communication. For example, one or more blocks may be included in which the mobile wireless node determines a mobility state of the mobile wireless node and selects a set based on the mobility state.

[0120] In some implementations, one or more blocks may be included in which the mobile wireless node determines to change from being wirelessly connected to a first parent node of the wireless backhaul communication network to being wirelessly connected to a second parent node of the wireless backhaul communication network. For example, the first parent node may include or correspond to the second node 407, and the second parent node may include or correspond to the third node 409. While wirelessly connected to the second parent node, the mobile wireless node may communicate with one or more wireless devices, such as the wireless device 415 or the UE 115, using the first set of communication resources.

[0121] In some implementations, the mobile wireless node may receive authorization from the control node to use the first set of communication resources while wirelessly connected to the second parent node. The authorization may include or correspond to authorization 490. Alternatively, the mobile wireless node may automatically use the first set of communication resources based on changing from wireless connection to the first parent node to wireless connection to the second parent node. In some implementations, a block may be included in which, while wirelessly connected to the second parent node, the mobile wireless node sends a request to the control node of the wireless backhaul communication network to use the first set of communication resources and receives authorization or a new set of communication resources in response to the request. For example, the request may include or correspond to request 488.

[0122] In some implementations, a block may be included in which the mobile wireless node receives a second resource indicator corresponding to a second set of communication resources. The second resource indicator may include or correspond to second resource indicator 484. For example, the mobile wireless node may receive the second resource indicator based on a determination to change from a first parent node wirelessly connected to the wireless backhaul communication network to a second parent node wirelessly connected to the wireless backhaul communication network. The mobile wireless node may communicate using the second set of communication resources based on the change to the second parent node wirelessly connected to the wireless backhaul communication network.

[0123] In some implementations, the mobile wireless node may send a mobility state indicator of the mobile wireless node to the wireless node, the mobility indicator indicating that the mobile wireless node is a mobile wireless node of the wireless backhaul communication network. The mobility state indicator may include or correspond to mobility state indicator 486. Additionally or alternatively, a block may be included in which the mobile wireless node sends an availability indicator to the wireless node of the wireless backhaul communication network, the availability indicator indicating that at least one communication resource in the first set of communication resources is available for use by the wireless node. The at least one communication resource may be a soft resource allocated to the wireless node. The availability indicator may include or correspond to availability indicator 492. In some implementations, the wireless node is a parent node of the mobile wireless node.

[0124] In some implementations, the first communication resources of the first communication resource set are configured to transmit first control information and are orthogonal to the second communication resources of the second communication resource set in the time domain. For example, the second communication resources are configured to be used by the wireless node to transmit second control information. In some such implementations, the wireless node, such as the second node 407, is a mobility type of a fixed wireless node. Additionally or alternatively, the third communication resource in the first communication resource set can be configured to transmit broadcast information, such as a broadcast message. As an illustrative and non-limiting example, the broadcast information can include an SSB, an RMSI, a RACH message, or a combination thereof. Additionally or alternatively, the fourth communication resource of the first communication resource set includes a soft resource, wherein the availability of the soft resource is controlled by a parent node of the mobile wireless node.

[0125] refer to Figure 7 In block 700, a control node (such as a base station) of a wireless backhaul communication network determines a first set of communication resources for use by a relay node of the wireless backhaul communication network based on a mobility state of the relay node. The control node may include or correspond to the control node 410. As illustrative and non-limiting examples, the relay node may include or correspond to the first node 405, the second node 407, or the third node 409.

[0126] The first resource set may include time domain resources. In some implementations, the first resource set includes hard resources configured for use independent of the configuration of the mobile termination of the mobile wireless node of the wireless backhaul communication network, soft resources whose availability is controlled by a parent node of the wireless backhaul communication network, or a combination thereof. In some implementations, the first communication resources in the first communication resource set may include hard resources configured to transmit first control information. Additionally or alternatively, the second communication resources in the first communication resource set are configured to transmit broadcast information. As an illustrative and non-limiting example, the broadcast information may include SSB, RMSI, RACH message, or a combination thereof. Additionally or alternatively, the third communication resource in the first communication resource set may include soft resources, wherein the availability of the soft resource is controlled by a parent node. The first communication resources may be orthogonal to the communication resources in the second communication resource set in the time domain, and the second communication resources are configured to be used by the wireless node to transmit second control information.

[0127] At block 701, a control node transmits a first resource indicator corresponding to a first set of communication resources. For example, the base station 105 may transmit the first resource indicator using wireless radios 901a-t and antennas 234a-t. The first resource indicator may include or correspond to the first resource indicator 480.

[0128] In some implementations, a block may be included in which a control node receives a mobility state indicator of a relay node from a relay node of a wireless backhaul communication network. In some such implementations, the control node determines a first set of communication resources corresponding to a first resource indicator based on the mobility state indicator. The mobility state indicator may indicate whether the mobile wireless node is a mobile wireless node or a fixed node. The mobility state indicator may include or correspond to mobility state indicator 486.

[0129] In some implementations, a block may be included in which the control node determines one or more parameters corresponding to the use of the first set of communication resources. The one or more parameters may include or correspond to one or more parameters 482. In some implementations, a first resource indicator (such as first resource indicator 480) may indicate the one or more parameters. The one or more parameters include a mobility state of a distribution unit of the mobile wireless node, a load, a topological state of the distribution unit, a topological state of a parent node of the mobile wireless node, a time period, another parameter, or a combination thereof.

[0130] In some implementations, a block may be included in which, after a handover operation that changes the mobile wireless node from being connected to a first parent node of the wireless backhaul communication network to a second parent node of the wireless backhaul communication network, the control node receives a request from the mobile wireless node of the wireless backhaul communication network to use a first set of communication resources. For example, the first parent node may include or correspond to the second node 407, and the second parent node may include or correspond to the third node 409. The request may include or correspond to the request 488. In some implementations, a block may be included in which the control node determines whether to authorize the mobile wireless node to use the first set of communication resources after the handover operation. In some such implementations, the control node sends an authorization to the mobile wireless node to use the first set of communication resources while the mobile wireless node is wirelessly connected to the second parent node. The authorization may include or correspond to the authorization 490.

[0131] In some implementations, the relay node is a fixed wireless node. Additionally or alternatively, the first set of communication resources includes soft resources. In some such implementations, the first resource indicator includes a parameter indicating the availability of the soft resources. For example, the parameter may indicate that the availability of the soft resources is determined by a mobile wireless device that is a child of the relay node. As another example, if the relay node does not have a child that is a mobile wireless node, the parameter may indicate that the availability of the soft resources is determined by the relay node.

[0132] In some implementations, a block may be included in which a control node divides a first set of communication resources into a first subset of resources and a second subset of resources. The first subset of resources may be used by one or more mobile wireless nodes assigned to a wireless backhaul communication network, and the second subset of resources may be used by one or more fixed wireless nodes assigned to the wireless backhaul communication network.

[0133] Note, reference Figure 6 and Figure 7 One or more blocks (or operations) described herein may be combined with one or more blocks (or operations) of another diagram. Figure 6 or Figure 7 One or more boxes can be combined with Figure 2 、 Figure 4 or Figure 9 Additionally or alternatively, the above reference Figures 1-4 、 Figure 5A 、 Figure 5B One or more of the operations described may be combined with reference to Figure 6 or Figure 7 Combines one or more of the operations described.

[0134] Figure 8 1 is a block diagram illustrating a UE 115 configured according to one aspect of the present disclosure. The UE 115 includes Figure 2 UE115 or Figure 4 1. The structure, hardware, and components of the wireless device 415 of FIG. 1. For example, the UE 115 includes a controller / processor 280 that operates to execute logic or computer instructions stored in a memory 282 and to control components of the UE 115 that provide the features and functionality of the UE 115. Under the control of the controller / processor 280, the UE 115 transmits and receives signals via wireless radios 801a-r and antennas 252a-r. The wireless radios 801a-r include various components and hardware, such as Figure 2 UE 115 is shown in FIG, including modulators / demodulators 254a-r, a MIMO detector 256, a receive processor 258, a transmit processor 264, and a TX MIMO processor 266.

[0135] As shown, the memory 282 may include IAB communication logic 802. The IAB communication logic 802 may be implemented via hardware, software, or a combination thereof. For example, the IAB communication logic 802 may be implemented as a processor, a circuit, or instructions stored in the memory 282 and executed by the processor 280. The IAB communication logic 802 may be used in various aspects of the present disclosure. For example, the IAB communication logic 802 is configured to maintain multiple synchronization references, provide synchronization information associated with the synchronization reference to other nodes (e.g., BS 105) (e.g., including timing or frequency), receive synchronization information from other nodes, receive synchronization adjustment commands, receive scheduling information (e.g., gap period, transmit timing, or receive timing), adjust the synchronization reference based on the received synchronization information or received command, or communicate with other nodes based on the received scheduling information. Figure 9 As shown, UE 115 may receive signals from or send signals to a base station such as base station 105, first node 405, second node 407, third node 409, control node 410, or base station 900 (eg, 105).

[0136] In some aspects, techniques for resource management in an IAB network may include additional aspects, such as any single aspect or any combination of aspects described below or in combination with one or more other processes or apparatuses described elsewhere herein. In some aspects, resource management in an IAB network may include an apparatus of a wireless backhaul communication network configured to determine a first set of communication resources for use by the apparatus; and, when the wireless backhaul communication network has a first topology and when the wireless backhaul communication network has a second topology, communicating with one or more wireless devices via one or more sub-links using the first set of communication resources. In some implementations, the apparatus is a device, such as a base station. For example, the apparatus may be a mobile device, such as a mobile wireless node. In some implementations, the apparatus may include at least one processor and a memory coupled to the processor. The processor may be configured to perform the operations described herein for the wireless device. In some other implementations, the apparatus may include a non-transitory computer-readable medium having program code recorded thereon, and the program code may be executable by a computer to cause the computer to perform the operations described herein for the wireless device. In some implementations, the apparatus may include one or more components configured to perform the operations described herein. In some implementations, the operations described for the apparatus may include a method for wireless communications.

[0137] In a first aspect, a first set of communication resources includes time domain resources.

[0138] In a second aspect, alone or in combination with the first aspect, the first set of resources comprises hard resources configured to be used independent of a configuration of mobile termination of the mobile radio node.

[0139] In a third aspect, alone or in combination with one or more of the first to second aspects, in order to determine the first communication resource set, the apparatus is configured to receive an indication of a plurality of communication resource sets.

[0140] In a fourth aspect, in combination with one or more of the first to third aspects, to determine the first set of communication resources, the apparatus is configured to identify a mobility state of the mobile wireless node as mobile.

[0141] In a fifth aspect, in combination with the third aspect and the fourth aspect, in order to determine the first communication resource set, the apparatus is further configured to select the first communication resource set from a plurality of communication resource sets based on the mobility state being mobile.

[0142] In a sixth aspect, alone or in combination with one or more of the first to fifth aspects, the apparatus is further configured to send a mobility state indicator of the mobile wireless node to a control node of the wireless backhaul communication network.

[0143] In a seventh aspect, in combination with the sixth aspect, in order to determine the first communication resource set, the apparatus is further configured to receive a first resource indicator from the control node, the first resource indicator corresponding to the first resource set and based on a mobility state indicator of the mobile wireless node.

[0144] In an eighth aspect, in combination with the seventh aspect, the mobility state indicator indicates that the mobile wireless node is a mobile wireless node.

[0145] In a ninth aspect, alone or in combination with one or more of the first to eighth aspects, in order to communicate with one or more wireless devices when the wireless backhaul communication network has a first topology and when the wireless backhaul communication network has a second topology, the apparatus is further configured to communicate with the one or more wireless devices using a first set of communication resources when wirelessly connected to a first parent node of the wireless backhaul communication network.

[0146] In the tenth aspect, in combination with the ninth aspect, in order to communicate with one or more wireless devices when the wireless backhaul communication network has a first topology and when the wireless backhaul communication network has a second topology, the apparatus is further configured to communicate with the one or more wireless devices using a first set of communication resources when wirelessly connected to a second parent node of the wireless backhaul communication network.

[0147] In an eleventh aspect, in combination with one or more of the sixth to tenth aspects, the first resource indicator indicates one or more parameters corresponding to usage of the first communication resource set.

[0148] In a twelfth aspect, in combination with the eleventh aspect, the one or more parameters include a mobility state of the mobile wireless node, a load, a topological state of the mobile wireless node, a topological state of a parent node of the mobile wireless node, a time period, another parameter, or a combination thereof.

[0149] In a thirteenth aspect, in combination with one or more of the sixth to tenth aspects, the apparatus is further configured to receive one or more parameters corresponding to the first communication resource set.

[0150] In a fourteenth aspect, in combination with the thirteenth aspect, the apparatus is further configured to determine whether one or more conditions corresponding to the one or more parameters are satisfied.

[0151] In a fifteenth aspect, in combination with the fourteenth aspect, based on a determination that one or more conditions are satisfied, the first set of communication resources is used to communicate with one or more wireless devices.

[0152] In a sixteenth aspect, the apparatus is further configured to receive authorization to use the first set of communication resources from a control node while wirelessly connected to the second parent node.

[0153] In a seventeenth aspect, in combination with the sixteenth aspect, the apparatus is further configured to, when wirelessly connected to the second parent node, send a request for use of the first set of communication resources to a control node of the wireless backhaul communication network.

[0154] In an eighteenth aspect, in combination with the seventeenth aspect, authorization is received in response to the request.

[0155] In a nineteenth aspect, the apparatus is further configured to automatically utilize the first set of communication resources based on changing from a wireless connection to a first parent node to a wireless connection to a second parent node.

[0156] In the twentieth aspect, in combination with the nineteenth aspect, the apparatus is further configured to receive a second resource indicator corresponding to a second set of communication resources based on a determination of changing from a first parent node wirelessly connected to the wireless backhaul communication network to a second parent node wirelessly connected to the wireless backhaul communication network.

[0157] In a twenty-first aspect, in combination with the twentieth aspect, the apparatus is further configured to communicate using a second set of communication resources based on changing to a wireless connection to a second parent node.

[0158] In aspect twenty-second, alone or in combination with one or more of aspects one to nineteen, the apparatus is further configured to send an availability indicator to a wireless node of the wireless backhaul communication network, the availability indicator indicating that at least one communication resource in the first communication resource set is available for use by the wireless node.

[0159] In a twenty-third aspect, in combination with the twenty-second aspect, the wireless node is a parent node of the device.

[0160] In a twenty-fourth aspect, in combination with the twenty-second aspect, at least one communication resource comprises a soft resource allocated to the wireless node.

[0161] In a twenty-fifth aspect, in combination with one or more of aspects twenty-second to twenty-fourth, the apparatus is further configured to send a mobility state indicator of the apparatus to a wireless node.

[0162] In a twenty-sixth aspect, in combination with the twenty-fifth aspect, the mobility state indicator indicates that the apparatus is a mobile wireless node of a wireless backhaul communication network.

[0163] In the twenty-seventh aspect, alone or in combination with one or more of the first to twenty-sixth aspects, the first communication resources of the first communication resource set are configured to transmit first control information and are orthogonal to the second communication resources of the second communication resource set in the time domain.

[0164] In a twenty-eighth aspect, in combination with the twenty-seventh aspect, the second communication resource is configured to be used by a wireless node of the wireless backhaul communication network to transmit the second control information.

[0165] In a twenty-ninth aspect, in combination with the twenty-eighth aspect, the wireless node has a fixed mobility type.

[0166] In a thirtieth aspect, alone or in combination with one or more of aspects twenty-seventh to twenty-ninth, the second communication resource in the first set of communication resources is configured to transmit a broadcast.

[0167] In the thirty-first aspect, in combination with the thirtieth aspect, the broadcast information includes SSB, RMSI, RACH message or a combination thereof.

[0168] In a thirty-second aspect, in combination with one or more of aspects twenty-seven to thirty-first, a third communication resource in the first set of communication resources is a soft resource, wherein availability of the soft resource is controlled by a parent node.

[0169] In some aspects, an apparatus configured for wireless communication (such as a control node of a wireless backhaul communication network) is configured to determine a first set of communication resources for use by a relay node of the wireless backhaul communication network based on a mobility state of the relay node, and to send a first resource indicator corresponding to the first set of communication resources. In some implementations, the apparatus includes a control node, such as a base station. In some implementations, the apparatus may include at least one processor and a memory coupled to the processor. The processor may be configured to perform the operations described herein for the wireless device. In some other implementations, the apparatus may include a non-transitory computer-readable medium having program code recorded thereon, and the program code is executable by a computer to cause the computer to perform the operations described herein for the wireless device. In some implementations, the apparatus may include one or more devices configured to perform the operations described herein. In some implementations, the operations described for the apparatus may include a method for wireless communication.

[0170] In a thirty-third aspect, the relay node is a mobile wireless node.

[0171] In a thirty-fourth aspect, alone or in combination with the thirty-fourth aspect, the apparatus is further configured to receive a mobility state indicator of the relay node from a relay node of the wireless backhaul communication network.

[0172] In a thirty-fifth aspect, in combination with the thirty-third aspect, the apparatus is further configured to determine a first set of communication resources corresponding to the first resource indicator based on the mobility state indicator.

[0173] In a thirty-sixth aspect, in combination with one or more of aspects thirty-four to thirty-fifth, the mobility state indicator indicates that the mobile wireless node is a mobile wireless node.

[0174] In a thirty-seventh aspect, alone or in combination with one or more of aspects thirty-three to thirty-six, the apparatus is further configured to determine one or more parameters corresponding to usage of the first set of communication resources.

[0175] In the thirty-eighth aspect, in combination with the thirty-seventh aspect, the first resource indicator indicates one or more parameters.

[0176] In aspect 39, in combination with one or more of aspects 37 to 38, the one or more parameters include the mobility state of the distribution unit of the mobile wireless node, the load, the topological state of the distribution unit, the topological state of the parent node of the mobile wireless node, the time period, additional parameters or a combination thereof.

[0177] In the 40th aspect, alone or in combination with one or more of aspects 33 to 39, the apparatus is further configured to receive a request to use a first set of communication resources from a mobile wireless node of the wireless backhaul communication network after a switching operation that changes the mobile wireless node from a first parent node connected to the wireless backhaul communication network to a second parent node of the wireless backhaul communication network.

[0178] In a forty-first aspect, in combination with the fortieth aspect, the apparatus is further configured to determine whether the mobile wireless node is authorized to use the first set of communication resources after the handover operation.

[0179] In a 42nd aspect, in combination with the 41st aspect, the apparatus is further configured to send an authorization to use the first set of communication resources to the mobile wireless node when the mobile wireless node is wirelessly connected to the second parent node.

[0180] In a forty-third aspect, the relay node is a fixed wireless node.

[0181] In a 44th aspect, in combination with the 43rd aspect, the first communication resource set includes soft resources.

[0182] In a forty-fifth aspect, in combination with the forty-fourth aspect, the first resource indicator includes a parameter indicating availability of the soft resource.

[0183] In a forty-sixth aspect, in combination with the forty-fifth aspect, the parameter indicative of the availability of the soft resource is determined by a mobile wireless device that is a child node of the relay node.

[0184] In a forty-seventh aspect, in combination with the forty-fifth aspect, if the relay node does not have a child node that is a mobile wireless node, the parameter indicates that the availability of the soft resource is determined by the relay node.

[0185] In a forty-eighth aspect, the apparatus is further configured to partition the first set of communication resources into a first subset of resources and a second subset of resources.

[0186] In a 49th aspect, in combination with the 48th aspect, the first subset of resources is allocated for use by one or more mobile wireless nodes of the wireless backhaul communication network.

[0187] In a fiftieth aspect, in combination with the forty-ninth aspect, the second subset of resources is allocated for use by one or more fixed wireless nodes of the wireless backhaul communication network.

[0188] Those skilled in the art will appreciate that any of a variety of different techniques and methods may be used to represent information and signals. For example, data, instructions, commands, information, signals, bits, symbols, and chips referenced throughout the above description may be represented by voltages, currents, electromagnetic waves, magnetic fields or particles, optical fields or particles, or any combination thereof.

[0189] The functional blocks and modules described herein (eg, Figure 2 、 Figure 4 、 Figure 8 or Figure 9 The functional blocks and modules in the present invention may include processors, electronic devices, hardware devices, electronic components, logical circuits, memories, software codes, firmware codes, etc., or any combination thereof. Figure 2 、 Figure 4 、 Figure 8 or Figure 9 The related features may be implemented via dedicated processor circuits, via executable instructions, or a combination thereof.

[0190] Those skilled in the art will further appreciate that the various illustrative logical blocks, modules, circuits, and algorithm steps (e.g., Figure 6 and Figure 7 The logic blocks in the ) can be implemented as electronic hardware, computer software, or a combination of the two. In order to clearly illustrate this interchangeability of hardware and software, the functions of various illustrative components, blocks, modules, and circuits have been described above. Whether such functions are implemented as hardware or software depends on the specific application and the design constraints imposed on the entire system. Those skilled in the art may implement the described functions in different ways for each specific application, but such implementation decisions should not be interpreted as resulting in a departure from the scope of the present disclosure. Those skilled in the art will also readily recognize that the order or combination of components, methods, or interactions described herein are merely examples, and that the components, methods, or interactions of various aspects of the present disclosure may be combined or performed in a manner different from that shown and described herein.

[0191] The various illustrative logical blocks, modules, and circuits described in conjunction with the disclosure herein may be implemented or performed 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, 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 alternatively, the processor may be any conventional processor, controller, microcontroller, or state machine. A 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 combination with a DSP core, or any other such configuration.

[0192] The steps of the method or algorithm described in conjunction with the disclosure herein can be implemented directly in hardware, in a software module executed by a processor, or in a combination of the two. The software module can reside in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, a hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor so that the processor can read information from the storage medium and write information to the storage medium. Alternatively, the storage medium can be integrated into the processor. The processor and storage medium can reside in an ASIC. The ASIC can reside in a user terminal. Alternatively, the processor and storage medium can reside in a user terminal as discrete components.

[0193] In one or more exemplary designs, the functions described can be implemented in hardware, software, firmware, or any combination thereof. If implemented in software, these functions can be stored as one or more instructions or codes on a computer-readable medium or transmitted via a computer-readable medium. Computer-readable media include computer storage media and communication media, and communication media include any media that facilitates the transfer of computer programs from one place to another. Computer-readable storage media can be any available medium that can be accessed by a general-purpose or special-purpose computer. As an example and not a limitation, such computer-readable media can include RAM, ROM, EEPROM, CD-ROM or other optical disk storage, disk storage or other magnetic storage devices, or any other medium that can be used to carry or store desired program code components in the form of instructions or data structures and can be accessed by a general-purpose or special-purpose computer or a general-purpose or special-purpose processor. In addition, a connection can be appropriately referred to as a computer-readable medium. For example, if a coaxial cable, fiber optic cable, twisted pair, or digital subscriber line (DSL) is used to transmit software from a website, server, or other remote source, the coaxial cable, fiber optic cable, twisted pair, or DSL are all included in the definition of the medium. Disk and disc, as used herein, include compact disc (CD), laser disc, optical disc, digital versatile disc (DVD), floppy disk and Blu-ray disc, where disks usually reproduce data magnetically, while discs reproduce data optically with lasers. Combinations of the above should also be included within the scope of computer-readable media.

[0194] As used herein, including in the claims, when used in a list of two or more items, the term "and / or" indicates that any one of the listed items can be taken alone or any combination of two or more of the listed items can be taken. For example, if a composition is described as comprising components A, B, and / or C, the composition can comprise component A only; component B only; component C only; a combination of A and B; a combination of A and C; a combination of B and C; or a combination of A, B, and C. Furthermore, as used herein, including in the claims, "or" used in a list of items ending with "at least one of" indicates a disjunctive list, so that, for example, a list of "at least one of A, B, or C" means any one of A or B or C or AB or AC or BC or ABC (i.e., A and B and C), or any combination thereof.

[0195] The foregoing description of the present disclosure is provided to enable any person skilled in the art to utilize or use the present disclosure. Various modifications to the present disclosure will be apparent to those skilled in the art, and the general principles defined herein may be applied to other variations without departing from the spirit or scope of the present disclosure. Therefore, the present disclosure is not intended to be limited to the examples and designs described herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for wireless communication, the method comprising: receiving, at a mobile wireless node of a wireless backhaul communication network, from a control node of the wireless backhaul communication network, a first resource indicator corresponding to a first set of communication resources for use by the mobile wireless node, wherein the first resource indicator is based on a mobility state indicator of the mobile wireless node; and The mobile wireless node communicates with one or more wireless devices via one or more sub-links using the first communication resource set determined based on the received first resource indicator when the wireless backhaul communication network has a first topology and when the wireless backhaul communication network has a second topology.

2. The method according to claim 1, wherein The first communication resource set includes time domain resources.

3. The method according to claim 1, wherein The first set of communication resources includes hard resources configured for use independent of a mobile termination configuration of the mobile wireless node.

4. The method according to claim 1, further comprising: The mobility state indicator of the mobile wireless node is sent by the mobile wireless node to the control node of a wireless backhaul communication network.

5. The method according to claim 1, wherein The mobility state indicator indicates that the mobile wireless node is a mobile wireless node.

6. The method according to claim 1, wherein The first resource indicator indicates one or more parameters corresponding to usage of a first set of communication resources.

7. The method according to claim 6, wherein: The one or more parameters include a mobility state of the mobile wireless node, a load, a topological state of the mobile wireless node, a topological state of a parent node of the mobile wireless node, a time period, another parameter, or a combination thereof.

8. The method according to claim 1, further comprising: receiving, by the mobile wireless node, one or more parameters corresponding to a first set of communication resources; as well as determining, by the mobile wireless node, whether one or more conditions corresponding to the one or more parameters are satisfied; Wherein, based on a determination that the one or more conditions are satisfied, the first set of communication resources is used by the mobile wireless node to communicate with the one or more wireless devices.

9. The method according to claim 8, further comprising: A determination is made by the mobile wireless node as to whether one or more conditions corresponding to the one or more parameters are satisfied.

10. The method according to claim 9, wherein: Based on a determination that one or more conditions are satisfied, the first set of communication resources is utilized by the mobile wireless node to communicate with the one or more wireless devices.

11. An apparatus configured for wireless communication, comprising: at least one processor; as well as a memory coupled to the at least one processor, Wherein, the at least one processor is configured to: receiving, at a mobile wireless node of a wireless backhaul communication network, from a control node of the wireless backhaul communication network, a first resource indicator corresponding to a first set of communication resources for use by the mobile wireless node, wherein the first resource indicator is based on a mobility state indicator of the mobile wireless node; and When the wireless backhaul communication network has a first topology and when the wireless backhaul communication network has a second topology, the mobile wireless node initiates communication with one or more wireless devices via one or more sub-links using the first set of communication resources determined based on the received first resource indicator.

12. The device according to claim 11, wherein To determine the first set of communication resources, the at least one processor is further configured to: identifying, by the mobile wireless node, a mobility state of the mobile wireless node as mobile; and A first set of communication resources is selected by the mobile wireless node from a plurality of sets of communication resources based on the mobility state being mobile.

13. The device according to claim 11, wherein To communicate with one or more wireless devices when the wireless backhaul communication network has the first topology and when the wireless backhaul communication network has the second topology, the at least one processor is further configured to: communicating, by the mobile wireless node while wirelessly connected to a first parent node of a wireless backhaul communication network, with one or more wireless devices using a first set of communication resources; as well as The first set of communication resources is used by the mobile wireless node to communicate with one or more wireless devices while wirelessly connected to a second parent node of the wireless backhaul communication network.

14. The device according to claim 11, wherein The at least one processor is further configured to automatically utilize, by the mobile wireless node, a first set of communication resources based on changing from a wireless connection to a first parent node to a wireless connection to a second parent node.

15. The device according to claim 14, wherein The at least one processor is further configured to receive, by the mobile wireless node, a second resource indicator corresponding to a second set of communication resources based on a determination to change from the first parent node wirelessly connected to a wireless backhaul communication network to the second parent node wirelessly connected to the wireless backhaul communication network.

16. The device according to claim 15, wherein The at least one processor is further configured to communicate by the mobile wireless node using a second set of communication resources based on changing to the wireless connection to the second parent node.

17. An apparatus configured for wireless communication, comprising: means for receiving, at a mobile wireless node of a wireless backhaul communication network, from a control node of the wireless backhaul communication network, a first resource indicator corresponding to a first set of communication resources for use by the mobile wireless node, wherein the first resource indicator is based on a mobility state indicator of the mobile wireless node; Means for communicating, by the mobile wireless node, with one or more wireless devices via one or more sub-links using the first set of communication resources determined based on the received first resource indicator when the wireless backhaul communication network has a first topology and when the wireless backhaul communication network has a second topology.

18. The apparatus of claim 17, further comprising means for receiving authorization to use the first set of communication resources from a control node while wirelessly connected to the second parent node.

19. The apparatus of claim 18, further comprising means for sending a request to a control node of the wireless backhaul communication network to use the first set of communication resources while wirelessly connected to the second parent node, wherein The authorization is received in response to the request.

20. The apparatus of claim 17, further comprising means for sending an availability indicator to a wireless node of the wireless backhaul communication network, the availability indicator indicating that at least one communication resource in the first set of communication resources is available for use by the wireless node.

21. The device according to claim 20, wherein The wireless node is a parent node of the mobile wireless node.

22. The device according to claim 20, wherein The at least one communication resource comprises a soft resource allocated to the wireless node.

23. The apparatus of claim 17, further comprising means for transmitting the mobility state indicator of the mobile wireless node to the wireless node, wherein The mobility state indicator indicates that the mobile wireless node is a mobile wireless node of a wireless backhaul communication network.

24. A non-transitory computer-readable medium storing instructions that, when executed by a processor, cause the processor to perform operations comprising: At a mobile wireless node of a wireless backhaul communication network, a first resource indicator corresponding to a first set of communication resources for use by the mobile wireless node is received from a control node of the wireless backhaul communication network, wherein The first resource indicator is based on a mobility state indicator of the mobile wireless node; as well as The mobile wireless node communicates with one or more wireless devices via one or more sub-links using the first communication resource set determined based on the received first resource indicator when the wireless backhaul communication network has a first topology and when the wireless backhaul communication network has a second topology.

25. The non-transitory computer readable medium of claim 24, wherein: The first communication resources of the first communication resource set are configured to transmit first control information and are orthogonal to the second communication resources of the second communication resource set in the time domain.

26. The non-transitory computer readable medium of claim 25, wherein: The second communication resource is configured to be used by a wireless node of the wireless backhaul communication network to transmit second control information.

27. The non-transitory computer-readable medium of claim 25, wherein: The wireless node has a fixed mobility type.

28. The non-transitory computer-readable medium of claim 25, wherein: The third communication resource of the first communication resource set is a soft resource, wherein availability of the soft resource is controlled by a parent node.

29. The non-transitory computer-readable medium of claim 25, wherein: The second communication resource in the first set of communication resources is configured to transmit broadcast information.

30. The non-transitory computer readable medium of claim 29, wherein: The broadcast information includes synchronization signal block SSB, remaining minimum system information RMSI, random access channel RACH message or a combination thereof.

31. A computer program product comprising computer instructions which, when executed by a processor, cause the processor to perform the method according to any one of claims 1 to 10.

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