CN117015942A

CN117015942A - Supporting adaptive frequency domain resource configuration for relay nodes

Info

Publication number: CN117015942A
Application number: CN202280018542.4A
Authority: CN
Inventors: J·罗; N·阿贝迪尼; 陈万士; 骆涛; L·布莱森特; N·阿克勒; K·G·汉佩尔; 厉隽怿
Original assignee: Qualcomm Inc
Current assignee: Qualcomm Inc
Priority date: 2021-03-08
Filing date: 2022-01-10
Publication date: 2023-11-07

Abstract

The control node (305-c) sends an indication to the first relay node (310-c) to communicate according to a first resource configuration of a set of resource configurations, wherein each resource configuration of the set is associated with a respective set of resource blocks and a respective time domain pattern. In some examples, each time domain mode may indicate a resource type associated with an availability of each symbol for communication by the first relay node with the second relay node (420) for each symbol in a respective set of symbols associated with each time domain mode. The first relay node may communicate in accordance with the first resource configuration based on receiving an indication to communicate in accordance with the first resource configuration.

Description

Supporting adaptive frequency domain resource configuration for relay nodes

Cross reference

This patent application claims priority from U.S. patent application Ser. No.17/571,318, entitled "SUPPORTING ADAPTIVE FREQUENCY DOMAIN RESOURCE CONFIGURATIN FOR A RELAY NODE", issued by LUO et al at 1.7 of 2022, which claims the benefit of U.S. provisional patent application Ser. No.63/158,250, entitled "SUPPORTING ADAPTIVE FREQUENCY DOMAIN RESOURCE CONFIGURATION FOR A RELAY NODE", issued by LUO et al at 3.8 of 2021, which is assigned to the assignee of the present application.

Technical Field

The following relates to wireless communications, and more particularly to supporting adaptive frequency domain resource configuration for relay nodes.

Background

Wireless communication systems are widely deployed to provide various types of communication content such as voice, video, packet data, messaging, broadcast, and so on. These systems may be able to support communication with multiple users by sharing available system resources (e.g., time, frequency, and power). Examples of such multiple access systems include fourth generation (4G) systems such as Long Term Evolution (LTE) systems, LTE-advanced (LTE-a) systems, or LTE-a Pro systems, and fifth generation (5G) systems, which may be referred to as New Radio (NR) systems. These systems may use techniques such as Code Division Multiple Access (CDMA), time Division Multiple Access (TDMA), frequency Division Multiple Access (FDMA), orthogonal FDMA (OFDMA), or discrete fourier transform spread orthogonal frequency division multiplexing (DFT-S-OFDM). A wireless multiple-access communication system may include one or more base stations or one or more network access nodes that each simultaneously support communication for multiple communication devices, which may also be referred to as User Equipment (UE).

In some examples, integrated Access Backhaul (IAB) nodes may be connected for communication in a hierarchical manner. The resource configuration for communication by the IAB node may present challenges in terms of latency, signaling overhead, or power consumption.

Disclosure of Invention

The described technology relates to improved methods, systems, devices and apparatus supporting adaptive frequency domain resource configuration for relay nodes. In general, the described techniques provide a control node for activating resource configuration at a relay node. For example, the control node may send an indication of a set of resource configurations for the first relay node to the first relay node, wherein each resource configuration in the set is associated with a respective set of resource blocks and a respective time domain pattern. Each time domain mode may indicate a resource type associated with an availability of each symbol for communication by the first relay node with the second relay node for each symbol in a respective set of symbols associated with each time domain mode.

A method for wireless communication at a first relay node is described. The method may include receiving, from a control node, an indication to communicate according to a first resource configuration of a set of resource configurations, wherein each resource configuration of the set is associated with a respective set of resource blocks and a respective time domain pattern, and wherein each time domain pattern indicates, for each symbol of a respective set of symbols associated with each time domain pattern, a resource type associated with an availability of each symbol for communication by the first relay node with a second relay node; and based on receiving an indication to communicate in accordance with the first resource configuration, communicating in accordance with the first resource configuration.

An apparatus for wireless communication at a first relay node is described. The apparatus may include a processor, a memory coupled to the processor, and instructions stored in the memory. The instructions may be executable by the processor to cause the apparatus to: receiving, from a control node, an indication of communication according to a first resource configuration of a set of resource configurations, wherein each resource configuration of the set is associated with a respective set of resource blocks and a respective time domain pattern, and wherein each time domain pattern indicates, for each symbol of a respective set of symbols associated with each time domain pattern, a resource type associated with availability of each symbol for communication by the first relay node with a second relay node; and based on receiving an indication to communicate in accordance with the first resource configuration, communicating in accordance with the first resource configuration.

Another apparatus for wireless communication at a first relay node is described. The apparatus may include means for receiving, from a control node, an indication to communicate according to a first resource configuration of a set of resource configurations, wherein each resource configuration of the set is associated with a respective set of resource blocks and a respective time domain pattern, and wherein each time domain pattern indicates, for each symbol of a respective set of symbols associated with each time domain pattern, a resource type associated with an availability of each symbol for communication by the first relay node with a second relay node; and means for communicating according to the first resource configuration based on receiving an indication to communicate according to the first resource configuration.

A non-transitory computer-readable medium storing code for wireless communication at a first relay node is described. The code may include instructions executable by the processor to: receiving, from a control node, an indication of communication according to a first resource configuration of a set of resource configurations, wherein each resource configuration of the set is associated with a respective set of resource blocks and a respective time domain pattern, and wherein each time domain pattern indicates, for each symbol of a respective set of symbols associated with each time domain pattern, a resource type associated with availability of each symbol for communication by the first relay node with a second relay node; and based on receiving an indication to communicate in accordance with the first resource configuration, communicating in accordance with the first resource configuration.

Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, units, or instructions to: receiving an indication from the control node to communicate according to a second resource configuration in the set of resource configurations; and based on receiving an indication to communicate according to a second resource configuration, communicating according to the second resource configuration.

In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, receiving an indication to communicate according to a first resource configuration and an indication to communicate according to a second resource configuration may include operations, features, elements, or instructions to: a communication is received from a control node of a subset according to a set of resource configurations, wherein the subset comprises a first resource configuration and a second resource configuration.

In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the subset of the set of resource configurations excludes at least one resource configuration in the set of resource configurations.

Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, units, or instructions to: at least one resource configuration is excluded based on a subset of the set of resource configurations, avoiding communication according to the at least one resource configuration.

Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, units, or instructions to: a default resource type for at least one resource configuration in the set of resource configurations is determined.

In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the subset of the set of resource configurations includes each of the set of resource configurations that may be an uplink resource configuration or each of the set of resource configurations that may be a downlink resource configuration.

In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, a first symbol set contract associated with a first resource configuration and a second symbol set associated with a second resource configuration at least partially overlap in time, frequency, or both.

In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, a first set of symbols associated with a first resource configuration may not overlap in time, frequency, or both with a second set of symbols associated with a second resource configuration.

Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, units, or instructions to: after receiving an indication to communicate according to the first resource configuration, receiving an indication to communicate according to a second resource configuration in the set of resource configurations from the control node; stopping communication according to the first resource configuration based on receiving the indication to communicate according to the second resource configuration; and based on receiving an indication to communicate according to the second resource configuration, communicating according to the second resource configuration.

Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, units, or instructions to: a request to communicate according to the first resource configuration is sent to the control node, wherein the indication to communicate according to the first resource configuration may be received based on the sending request.

Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, units, or instructions to: an indication to cease communication according to the first resource configuration is received from the control node.

Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, units, or instructions to: the method may further include sending a request to the control node to cease communication according to the first resource configuration, wherein receiving an indication to cease communication according to the first resource configuration may be based on the sending the request.

In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, receiving an indication to cease communication according to the first resource configuration may include operations, features, elements, or instructions to: an indication to cease communication according to a subset of a set of resource configurations is received from a control node, wherein the subset of the set of resource configurations includes a first resource configuration.

Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, units, or instructions to: at least one resource configuration is excluded based on a subset of the set of resource configurations, and communication is performed according to the at least one resource configuration in the set of resource configurations.

In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, a timer is set based on receiving an indication to communicate according to a first resource configuration, where communicating according to the first resource configuration occurs while the timer may be running.

Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, units, or instructions to: based on the timer stopping, communication according to the first resource configuration is stopped.

Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, units, or instructions to: the timer is reset when the timer may be running based on one or more criteria.

Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, units, or instructions to: a default resource type is determined for the set of resources that are excluded from each of the set of resource configurations.

In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the indication to communicate may be provided via radio resource control signaling, medium Access Control (MAC) control element signaling, downlink control information signaling, F1 application protocol (F1 AP) signaling, or a combination thereof.

In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the indication to communicate includes an indication of one or more criteria for communicating according to the first resource configuration, and communicating according to the first resource configuration may be based on whether the one or more criteria may be met.

In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the one or more criteria include detection of a collision between a transmission associated with the first resource configuration and another transmission, an interference metric being above a threshold amount, or both.

In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the one or more criteria include ultra-reliable low-latency communication traffic for communication.

In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the one or more criteria include: detection of an incoming location or area, a speed associated with the first relay node meeting a threshold, or both.

In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, a first set of resource blocks associated with a first resource configuration contract at least partially overlaps with a second set of resource blocks associated with a second resource configuration in time, frequency, or both.

In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, a first set of resource blocks associated with a first resource configuration may not overlap in time, frequency, or both with a second set of resource blocks associated with a second resource configuration.

In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, a first size of a first set of resource blocks associated with a first resource configuration may be the same as a second size of a second set of resource blocks associated with a second resource configuration.

In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, a first size of a first set of resource blocks associated with a first resource configuration may be different from a second size of a second set of resource blocks associated with a second resource configuration.

In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, a first time domain pattern associated with a first resource configuration in a set of resource configurations may be different from a second time domain pattern associated with a second resource configuration in the set of resource configurations.

In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, a first time domain pattern associated with a first resource configuration in a set of resource configurations may be the same as a second time domain pattern associated with a second resource configuration in the set of resource configurations.

In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the second relay node may be a child node of the first relay node.

In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the control node comprises a parent node of the first relay node or a central control node.

In some examples of the methods, apparatus, and non-transitory computer readable media described herein, the central control node comprises an integrated access backhaul donor central unit.

In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the first relay node comprises an integrated access backhaul node.

In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the resource type corresponds to one of a set of resource types, the set of resource types including: a first resource type associated with the symbol being available for communication by the first relay node, a second resource type associated with the symbol being unavailable for communication by the first relay node, and a third resource type associated with the symbol being conditionally available for communication by the first relay node.

A method for controlling wireless communication at a node is described. The method may include: transmitting, to the first relay node, an indication of a set of resource configurations for the first relay node, wherein each resource configuration in the set is associated with a respective set of resource blocks and a respective time domain pattern, and wherein each time domain pattern indicates, for each symbol in the respective set of symbols associated with each time domain pattern, a resource type associated with each symbol's availability for communication by the first relay node with the second relay node; and sending an indication to the first relay node to communicate according to a first resource configuration in a set of resource configurations.

An apparatus for controlling wireless communication at a node is described. The apparatus may include a processor, a memory coupled to the processor, and instructions stored in the memory. The instructions may be executable by the processor to cause the apparatus to: transmitting, to the first relay node, an indication of a set of resource configurations for the first relay node, wherein each resource configuration in the set is associated with a respective set of resource blocks and a respective time domain pattern, and wherein each time domain pattern indicates, for each symbol in the respective set of symbols associated with each time domain pattern, a resource type associated with each symbol's availability for communication by the first relay node with the second relay node; and sending an indication to the first relay node to communicate according to a first resource configuration in a set of resource configurations.

Another apparatus for controlling wireless communications at a node is described. The apparatus may include: means for transmitting, to the first relay node, an indication of a set of resource configurations for the first relay node, wherein each resource configuration in the set is associated with a respective set of resource blocks and a respective time domain pattern, and wherein each time domain pattern indicates, for each symbol in the respective set of symbols associated with each time domain pattern, a resource type associated with availability of each symbol for communication by the first relay node with the second relay node; and means for sending an indication to the first relay node to communicate according to a first resource configuration in a set of resource configurations.

A non-transitory computer-readable medium storing code for controlling wireless communication at a node is described. The code may include instructions executable by the processor to: transmitting, to the first relay node, an indication of a set of resource configurations for the first relay node, wherein each resource configuration in the set is associated with a respective set of resource blocks and a respective time domain pattern, and wherein each time domain pattern indicates, for each symbol in the respective set of symbols associated with each time domain pattern, a resource type associated with each symbol's availability for communication by the first relay node with the second relay node; and sending an indication to the first relay node to communicate according to a first resource configuration in a set of resource configurations.

Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, units, or instructions to: an indication of a set of resource configurations for a first relay node is received from a parent node of the control node or a central control node.

Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, units, or instructions to: an indication to communicate according to the first resource configuration is received from a parent node of the control node or the central control node.

Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, units, or instructions to: after sending the indication to communicate according to the first resource configuration, sending the indication to the first relay node to communicate according to the second resource configuration in the set of resource configurations.

In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, transmitting an indication to communicate according to a first resource configuration and an indication to communicate according to a second resource configuration may include operations, features, elements, or instructions to: a subset of the set of resource configurations is transmitted to the first relay node for communication, wherein the subset includes the first resource configuration and the second resource configuration.

Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, units, or instructions to: a request to communicate according to the first resource configuration is received from the first relay node, wherein the indication to communicate according to the first resource configuration may be sent based on the received request.

Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, units, or instructions to: an indication to cease communication according to the first resource configuration is sent to the first relay node.

Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, units, or instructions to: a request to cease communication according to the first resource configuration is received from the first relay node, wherein transmitting an indication to cease communication according to the first resource configuration may be based on the receiving the request.

In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, transmitting an indication to cease communication according to the first resource configuration may include operations, features, elements, or instructions to: an indication to cease communication according to a subset of a set of resource configurations is sent to a first relay node, wherein the subset of the set of resource configurations includes a first resource configuration.

In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the indication to communicate includes an indication of one or more criteria for communicating according to the first resource configuration.

In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the set of resource blocks associated with the first resource configuration contract and the set of resource blocks associated with the second resource configuration at least partially overlap in time, frequency, or both.

Drawings

Fig. 1 illustrates an example of a wireless communication system supporting adaptive frequency domain resource configuration for relay nodes in accordance with aspects of the present disclosure.

Fig. 2 illustrates an example of a node configuration scheme supporting adaptive frequency domain resource configuration for relay nodes in accordance with aspects of the present disclosure.

Fig. 3A and 3B illustrate examples of resource configuration schemes supporting adaptive frequency domain resource configuration for relay nodes in accordance with aspects of the present disclosure.

Fig. 4 illustrates an example of a wireless communication system supporting adaptive frequency domain resource configuration for relay nodes in accordance with aspects of the disclosure.

Fig. 5 illustrates an example of a process flow supporting adaptive frequency domain resource configuration for a relay node in accordance with aspects of the present disclosure.

Fig. 6 and 7 illustrate block diagrams of devices supporting adaptive frequency domain resource configuration for relay nodes in accordance with aspects of the present disclosure.

Fig. 8 illustrates a block diagram of a communication manager supporting adaptive frequency domain resource configuration for relay nodes in accordance with an aspect of the disclosure.

Fig. 9 illustrates a schematic diagram of a system including an apparatus supporting adaptive frequency domain resource configuration for a relay node in accordance with an aspect of the disclosure.

Fig. 10-14 illustrate flowcharts of methods of supporting adaptive frequency domain resource configuration for relay nodes in accordance with aspects of the present disclosure.

Detailed Description

In some examples, a first relay node may communicate with a second relay node (e.g., a child node of the first relay node) according to a resource configuration. The resource configurations may be associated with respective sets of Resource Blocks (RBs) and respective time domain modes. Each time domain mode may indicate a resource type associated with an availability of each symbol for communication by the first relay node with the second relay node for each symbol in a respective set of symbols associated with each time domain mode.

In some examples, a control node (e.g., a central control node and/or a parent node of a first relay node) may send an indication of a resource configuration to the first relay node for configuring the first relay node to communicate according to the resource configuration. To update the resource configuration, the control node may send the updated resource configuration to the first relay node. However, sending an indication of the updated resource configuration to the first relay node each time the resource configuration at the first relay node is to be updated may be associated with increased latency or overhead.

According to various aspects described herein, a control node may send an indication of a set of resource configurations for a first relay node, and when the resource configuration at the first relay node is to be updated, the control node may send an indication of communicating according to one or more of the set of resource configurations (e.g., the control node may send an indication of activating one or more of the set of resource configurations). The indication to communicate according to one or more resource configurations in the set of resource configurations may be associated with a lower latency or lower overhead than the indication of updated resource configurations each time the resource configuration of the first relay node is to be transmitted.

Aspects of the present disclosure are initially described in the context of a wireless communication system. Additional aspects of the present disclosure are described in the context of a node configuration scheme, a resource configuration scheme, another wireless communication system, and a process flow. Aspects of the present disclosure are further illustrated and described with reference to apparatus diagrams, system diagrams, and flowcharts related to supporting adaptive frequency domain resource configuration for relay nodes.

Fig. 1 illustrates an example of a wireless communication system 100 supporting adaptive frequency domain resource configuration for relay nodes in accordance with aspects of the disclosure. The wireless communication system 100 may include one or more base stations 105, one or more UEs 115, and a core network 130. In some examples, the wireless communication system 100 may be a Long Term Evolution (LTE) network, an LTE-advanced (LTE-a) network, an LTE-a Pro network, or a new wireless (NR) network. In some examples, the wireless communication system 100 may support enhanced broadband communications, ultra-reliable (e.g., mission critical) communications, low latency communications, communications utilizing low cost and low complexity devices, or any combination thereof.

The base stations 105 may be dispersed throughout a geographic area used to form the wireless communication system 100 and may be devices in different forms or with different capabilities. The base station 105 and the UE 115 may communicate wirelessly via one or more communication links 125. Each base station 105 may provide a coverage area 110 in which a UE 115 and base station 105 may establish one or more communication links 125. Coverage area 110 may be an example of a geographic area over which base station 105 and UE 115 may support signaling in accordance with one or more radio access technologies.

The UEs 115 may be dispersed throughout the coverage area 110 of the wireless communication system 100, and each UE 115 may be fixed or mobile, or both at different times. The UE 115 may be a device in a different form or with different capabilities. Some example UEs 115 are shown in fig. 1. The UEs 115 described herein may be capable of communicating with various types of devices as shown in fig. 1, such as other UEs 115, base stations 105, or network equipment (e.g., core network nodes, relay devices, integrated Access Backhaul (IAB) nodes, or other network equipment).

The base stations 105 may communicate with the core network 130 or with each other or with both. For example, the base station 105 may interface with the core network 130 via one or more backhaul links 120 (e.g., via S1, N2, N3, or other interfaces). The base stations 105 may communicate with each other over backhaul links 120 (e.g., via X2, xn, or other interfaces) or directly (e.g., directly between base stations 105) or indirectly (e.g., via core network 130), or both. In some examples, backhaul link 120 may be or include one or more wireless links.

One or more of the base stations 105 described herein may include or may be referred to by those skilled in the art as a base station transceiver, a radio base station, an access point, a radio transceiver, a node B, e node B (eNB), a next generation node B or giganode B (any of which may be referred to as a gNB), a home node B, a home enode B, or other suitable terminology.

UE 115 may include or may be referred to as a mobile device, a wireless device, a remote device, a handheld device, or a subscriber device, or some other suitable terminology, where "device" may also be referred to as a unit, station, terminal, or client, among other examples. The UE 115 may also include or may be referred to as a personal electronic device, such as a cellular telephone, a Personal Digital Assistant (PDA), a tablet computer, a laptop computer, or a personal computer. In some examples, the UE 115 may include or be referred to as a Wireless Local Loop (WLL) station, an internet of things (IoT) device, a internet of things (IoE) device, or a Machine Type Communication (MTC) device, among other examples, which may be implemented in various items such as appliances, or vehicles, meters, among other examples.

The UEs 115 described herein may be capable of communicating with various types of devices, such as other UEs 115 that may sometimes act as relays, as well as base stations 105 and network devices, including macro enbs or gnbs, small cell enbs or gnbs, or relay base stations, among other examples, as shown in fig. 1.

The UE 115 and the base station 105 may communicate wirelessly with each other via one or more communication links 125 over one or more carriers. The term "carrier" may refer to a collection of radio frequency spectrum resources having a defined physical layer structure to support the communication link 125. For example, the carrier used for communication link 125 may include a portion (e.g., a bandwidth portion (BWP)) of a radio frequency band that operates according to one or more physical layer channels of a given radio access technology (e.g., LTE-A, LTE-a Pro, NR). Each physical layer channel may carry acquisition signaling (e.g., synchronization signals, system information), control signaling that coordinates operations for carriers, user data, or other signaling. The wireless communication system 100 may support communication with the UE 115 using carrier aggregation or multi-carrier operation. The UE 115 may be configured with multiple downlink component carriers and one or more uplink component carriers according to a carrier aggregation configuration. Carrier aggregation may be used with both Frequency Division Duplex (FDD) and Time Division Duplex (TDD) component carriers.

In some examples (e.g., in a carrier aggregation configuration), a carrier may also have acquisition signaling or control signaling that coordinates the operation of other carriers. The carrier may be associated with a frequency channel, such as an evolved universal mobile telecommunications system terrestrial radio access (E-UTRA) absolute radio frequency channel number (EARFCN), and may be positioned according to a channel grid for discovery by the UE 115. The carrier may be operated in a standalone mode, in which initial acquisition and connection may be directed by the UE 115 via the carrier, or in a non-standalone mode, in which a different carrier (e.g., a carrier of the same or different radio access technology) is anchored for connection.

The communication link 125 shown in the wireless communication system 100 may include an uplink transmission from the UE 115 to the base station 105 or a downlink transmission from the base station 105 to the UE 115. The carrier may carry downlink or uplink communications (e.g., in FDD mode), or may be configured to carry downlink and uplink communications (e.g., in TDD mode).

The carrier may be associated with a particular bandwidth of the radio frequency spectrum, and in some examples, the carrier bandwidth may be referred to as the carrier or "system bandwidth" of the wireless communication system 100. For example, the carrier bandwidth may be one of a plurality of determined bandwidths of a carrier for a particular radio access technology (e.g., 1.4, 3, 5, 10, 15, 20, 40, or 80 megahertz (MHz)). Devices of the wireless communication system 100 (e.g., the base station 105, the UE 115, or both) may have a hardware configuration that supports communication over a particular carrier bandwidth or may be configurable to support communication over one of a set of carrier bandwidths. In some examples, wireless communication system 100 may include a base station 105 or UE 115 that supports simultaneous communication via carriers associated with multiple carrier bandwidths. In some examples, each served UE 115 may be configured to operate over part of the carrier bandwidth (e.g., sub-band, BWP) or the entire bandwidth.

The signal waveform transmitted over the carrier may be composed of multiple subcarriers (e.g., using a multi-carrier modulation (MCM) technique such as Orthogonal Frequency Division Multiplexing (OFDM) or discrete fourier transform spread OFDM (DFT-S-OFDM)). In systems using MCM techniques, a resource element may include a symbol period (e.g., the duration of one modulation symbol) and one subcarrier, where the symbol period and subcarrier spacing are inversely related. The number of bits carried by each resource element may depend on the modulation scheme (e.g., the order of the modulation scheme, the coding rate of the modulation scheme, or both). Thus, the more resource elements that UE 115 receives, and the higher the order of the modulation scheme, the higher the data rate for UE 115 may be. The wireless communication resources may refer to a combination of radio frequency spectrum resources, time resources, and spatial resources (e.g., spatial layers or beams), and the use of multiple spatial layers may further improve the data rate or data integrity of communications with the UE 115.

One or more digital schemes for the carrier may be supported, where the digital schemes may include a subcarrier spacing (Δf) and a cyclic prefix. The carrier wave may be divided into one or more BWP with the same or different digital schemes. In some examples, multiple BWP may be configured for UE 115. In some examples, a single BWP for a carrier may be active at a given time, and communication for UE 115 may be limited to one or more active BWPs.

The time interval for the base station 105 or the UE 115 may be in basic time units (which may be referred to as T, for example _s ＝1/(Δf _max ·N _f ) Sampling period of seconds, where Δf _max Can represent the maximum supported subcarrier spacing, and N _f Can represent a multiple of the maximum supported Discrete Fourier Transform (DFT) size). The time intervals of the communication resources may be organized according to radio frames each having a specified duration (e.g., 10 milliseconds (ms)). Each radio frame may be identified by a System Frame Number (SFN) (e.g., ranging from 0 to 1023).

Each frame may include a plurality of consecutively numbered subframes or slots, and each subframe or slot may have the same duration. In some examples, the frame may be divided (e.g., in the time domain) into subframes, and each subframe may be further divided into a number of slots. Alternatively, each frame may include a variable number of slots, and the number of slots may depend on the subcarrier spacing. Each slot may include several symbol periods (e.g., depending on the length of the cyclic prefix added before each symbol period). In some wireless communication systems 100, a time slot may be further divided into a plurality of minislots containing one or more symbols. Excluding cyclic prefix, each symbol period may be wrapped Containing one or more (e.g. N _f ) Sampling period. The duration of the symbol period may depend on the subcarrier spacing or the frequency band of operation.

A subframe, slot, minislot, or symbol may be a minimum scheduling unit (e.g., in the time domain) of the wireless communication system 100 and may be referred to as a Transmission Time Interval (TTI). In some examples, the TTI duration (e.g., the number of symbol periods in a TTI) may be variable. Additionally or alternatively, the smallest scheduling unit of the wireless communication system 100 may be dynamically selected (e.g., in bursts of shortened TTIs (sTTI)).

The physical channels may be multiplexed on the carrier according to various techniques. The physical control channels and physical data channels may be multiplexed on the downlink carrier using, for example, one or more of Time Division Multiplexing (TDM) techniques, frequency Division Multiplexing (FDM) techniques, or hybrid TDM-FDM techniques. A control region (e.g., a control resource set (CORESET)) for a physical control channel may be defined by a plurality of symbol periods and may extend across a system bandwidth or a subset of the system bandwidth of a carrier. One or more control regions (e.g., CORESET) may be configured for a set of UEs 115. For example, one or more of UEs 115 may monitor or search the control region to obtain control information according to one or more sets of search spaces, and each set of search spaces may include one or more control channel candidates having one or more aggregation levels arranged in a cascade. The aggregation level for control channel candidates may refer to the number of control channel resources (e.g., control Channel Elements (CCEs)) associated with encoded information for a control information format having a given payload size. The set of search spaces may include a common set of search spaces configured for transmitting control information to a plurality of UEs 115 and a UE-specific set of search spaces for transmitting control information to a particular UE 115.

Each base station 105 may provide communication coverage via one or more cells (e.g., macro cells, small cells, hot spots, or other types of cells, or any combination thereof). The term "cell" may refer to a logical communication entity that communicates with the base station 105 (e.g., over a carrier) and may be associated with an identifier (e.g., a Physical Cell Identifier (PCID), a Virtual Cell Identifier (VCID), or other identifier) that is used to distinguish between neighboring cells. In some examples, a cell may also refer to a geographic coverage area 110 or a portion (e.g., a sector) of geographic coverage area 110 over which a logical communication entity operates. The cells may range from a smaller area (e.g., structure, subset of structures) to a larger area, depending on various factors such as the capabilities of the base station 105. For example, a cell may be or include a building, a subset of buildings, or an outside space between geographic coverage areas 110 or overlapping geographic coverage areas 110, etc.

The macro cell generally covers a relatively large geographic area (e.g., several kilometers in radius) and may allow unrestricted access by UEs 115 with service subscriptions to network providers supporting the macro cell. The small cells may be associated with lower power base stations 105 than the macro cells, and may operate using the same or different (e.g., licensed, unlicensed) frequency bands than the macro cells. The small cell may provide unrestricted access to UEs 115 with service subscription with the network provider or may provide restricted access to UEs 115 with association with the small cell (e.g., UEs 115 in a Closed Subscriber Group (CSG), UEs 115 associated with users in a home or office). The base station 105 may support one or more cells and may also support communication over one or more cells using one or more component carriers.

In some examples, a carrier may support multiple cells and different cells may be configured according to different protocol types (e.g., MTC, narrowband IoT (NB-IoT), enhanced mobile broadband (eMBB)) that may provide access for different types of devices.

In some examples, the base station 105 may be mobile and thus provide communication coverage for a mobile geographic coverage area 110. In some examples, different geographic coverage areas 110 associated with different technologies may overlap, but different geographic coverage areas 110 may be supported by the same base station 105. In other examples, overlapping geographic coverage areas 110 associated with different technologies may be supported by different base stations 105. The wireless communication system 100 may include, for example, a heterogeneous network in which different types of base stations 105 provide coverage for various geographic coverage areas 110 using the same or different radio access technologies.

The wireless communication system 100 may support synchronous or asynchronous operation. For synchronous operation, the base stations 105 may have similar frame timing, and transmissions from different base stations 105 may be approximately aligned in time. For asynchronous operation, the base stations 105 may have different frame timing, and transmissions from different base stations 105 may not be aligned in time in some examples. The techniques described herein may be used for synchronous or asynchronous operation.

Some UEs 115 (e.g., MTC or IoT devices) may be low cost or low complexity devices and may provide automated communications between machines (e.g., via machine-to-machine (M2M) communications). M2M communication or MTC may refer to data communication techniques that allow devices to communicate with each other or base station 105 without human intervention. In some examples, M2M communications or MTC may include communications from devices integrating sensors or meters to measure or capture information and relay such information to a central server or application that utilizes or presents the information to humans interacting with the application. Some UEs 115 may be designed to collect information or enable automatic behavior of a machine or other device. Examples of applications for MTC devices include smart metering, inventory monitoring, water level monitoring, device monitoring, healthcare monitoring, wildlife monitoring, climate and geological event monitoring, fleet management and tracking, remote security sensing, physical access control, and transaction-based business billing.

Some UEs 115 may be configured to employ a reduced power consumption mode of operation, such as half-duplex communications (e.g., a mode that supports unidirectional communications via transmission or reception rather than simultaneous transmission and reception). In some examples, half-duplex communications may be performed at a reduced peak rate. Other power saving techniques for UE 115 include: a deep sleep mode of power saving is entered when not engaged in active communications, operating with limited bandwidth (e.g., according to narrowband communications), or a combination of these techniques. For example, some UEs 115 may be configured to operate using narrowband protocol types associated with defined portions or ranges (e.g., sets of subcarriers or Resource Blocks (RBs)) within, or outside of a guard band of a carrier.

The wireless communication system 100 may be configured to support ultra-reliable communication or low-latency communication, or various combinations thereof. For example, the wireless communication system 100 may be configured to support ultra-reliable low latency communication (URLLC) or mission critical communication. The UE 115 may be designed to support ultra-reliable low latency or critical functions (e.g., mission critical functions). The ultra-reliable communication may include private communication or group communication and may be supported by one or more mission critical services such as mission critical push-to-talk (MCPTT), mission critical video (MCVideo), or mission critical data (MCData). Support for mission critical functions may include prioritizing services, and mission critical services may be used for public safety or general business applications. The terms ultra-reliable, low latency, mission critical, and ultra-reliable low latency may be used interchangeably herein.

In some examples, the UE 115 may also be capable of directly communicating with other UEs 115 over a device-to-device (D2D) communication link 135 (e.g., using a point-to-point (P2P) or D2D protocol). One or more UEs 115 utilizing D2D communication may be located within the geographic coverage area 110 of the base station 105. Other UEs 115 in such a group may be outside of the geographic coverage area 110 of the base station 105 or otherwise unable to receive transmissions from the base station 105. In some examples, a group of UEs 115 communicating via D2D communication may utilize a one-to-many (1:M) system in which each UE 115 transmits to each other UE 115 in the group. In some examples, the base station 105 facilitates scheduling of resources for D2D communications. In other cases, D2D communication is implemented between UEs 115 without involving base station 105.

In some systems, D2D communication link 135 may be an example of a communication channel (such as a side-link communication channel) between vehicles (e.g., UEs 115). In some examples, the vehicle may communicate using vehicle-to-anything (V2X) communications, vehicle-to-vehicle (V2V) communications, or some combination of these communications. The vehicle may signal information related to traffic conditions, signal scheduling, weather, safety, emergency events, or any other information related to the V2X system. In some examples, a vehicle in the V2X system may communicate with a roadside infrastructure, such as a roadside unit, or with a network via one or more network nodes (e.g., base station 105) using vehicle-to-network (V2N) communications, or both.

The core network 130 may provide user authentication, access authorization, tracking, internet Protocol (IP) connectivity, and other access, routing, or mobility functions. The core network 130 may be an Evolved Packet Core (EPC) or a 5G core (5 GC) that may include at least one control plane entity (e.g., a Mobility Management Entity (MME), an access and mobility management function (AMF)) that manages access and mobility and at least one user plane entity (e.g., a serving gateway (S-GW), a Packet Data Network (PDN) gateway (P-GW), or a User Plane Function (UPF)) that routes packets or interconnections to external networks. The control plane entity may manage non-access stratum (NAS) functions such as mobility, authentication, and bearer management for UEs 115 served by base stations 105 associated with the core network 130. The user IP packets may be conveyed through a user plane entity, which may provide IP address assignment, among other functions. The user plane entity may be connected to IP services 150 of one or more network operators. These IP services 150 may include access to the internet, intranets, IP Multimedia Subsystem (IMS), or packet switched streaming services.

Some of the network devices, such as base station 105, may include a subcomponent such as an access network entity 140, which access network entity 140 may be one example of an Access Node Controller (ANC). Each access network entity 140 may communicate with UEs 115 through one or more other access network transport entities 145, which may be referred to as radio heads, smart radio heads, or transmission/reception points (TRPs). Each access network transport entity 145 may include one or more antenna panels. In some configurations, the various functions of each access network entity 140 or base station 105 may be distributed among various network devices (e.g., radio heads and ANCs) or incorporated into a single network device (e.g., base station 105).

The wireless communication system 100 may operate using one or more frequency bands typically in the range of 300 megahertz (MHz) to 300 gigahertz (GHz). In general, since the wavelength ranges from about one decimeter to one meter in length, the region from 300MHz to 3GHz is called a Ultra High Frequency (UHF) region or decimeter band. UHF waves may be blocked or redirected by building and environmental features, but these waves may penetrate the building sufficiently for the macrocell to provide service to UEs 115 located indoors. Transmission of UHF waves may be associated with smaller antennas and shorter distances (e.g., less than 100 kilometers) than transmission of smaller and longer waves using High Frequency (HF) or Very High Frequency (VHF) portions of the spectrum below 300 MHz.

The wireless communication system 100 may also operate in an ultra-high frequency (SHF) region using a frequency band from 3GHz to 30GHz, also referred to as a centimeter band, or in an extremely-high frequency (EHF) region of the frequency spectrum, also referred to as a millimeter band (e.g., from 30GHz to 300 GHz). In some examples, wireless communication system 100 may support millimeter wave (mmW) communication between UE 115 and base station 105, and EHF antennas of respective devices may be smaller and more closely spaced than UHF antennas. In some examples, this may facilitate the use of antenna arrays within the device. However, the propagation of EHF transmissions may suffer from even greater atmospheric attenuation and shorter distances than SHF or UHF transmissions. The techniques disclosed herein may be used across transmissions using one or more different frequency regions, and the use of designations of frequency bands across these frequency regions may vary from country to country or regulatory agency.

The wireless communication system 100 may utilize both licensed and unlicensed radio frequency spectrum bands. For example, wireless communication system 100 may employ Licensed Assisted Access (LAA), LTE unlicensed (LTE-U) radio access technology, or NR technology using unlicensed frequency bands, such as the 5GHz industrial, scientific, and medical (ISM) frequency bands. While operating in the unlicensed radio frequency spectrum band, devices such as base stations 105 and UEs 115 may use carrier sensing for collision detection and avoidance. In some examples, the operation of using the unlicensed frequency band may be configured based on carrier aggregation of component carriers in conjunction with operation using the licensed frequency band (e.g., LAA). Operations using unlicensed spectrum may include downlink transmissions, uplink transmissions, P2P transmissions, or D2D transmissions, among other examples.

Base station 105 or UE 115 may be equipped with multiple antennas that may be used to employ techniques such as transmit diversity, receive diversity, multiple-input multiple-output (MIMO) communication, or beamforming. The antennas of base station 105 or UE 115 may be located within one or more antenna arrays or antenna panels, which may support MIMO operation or transmit or receive beamforming. For example, one or more base station antennas or antenna arrays may be co-located at an antenna assembly, such as an antenna tower. In some examples, antennas or antenna arrays associated with base station 105 may be located in different geographic locations. The base station 105 may have an antenna array with a plurality of rows and columns of antenna ports that the base station 105 may use to support beamforming for communication with the UE 115. Also, UE 115 may have one or more antenna arrays that may support various MIMO or beamforming operations. Additionally, or alternatively, the antenna panel may support radio frequency beamforming for signals transmitted via the antenna ports.

Base station 105 or UE 115 may use MIMO communication to take advantage of multipath signal propagation and increase spectral efficiency by transmitting or receiving multiple signals via different spatial layers. Such techniques may be referred to as spatial multiplexing. The plurality of signals may be transmitted, for example, by the transmitting device via different antennas or different antenna combinations. Likewise, multiple signals may be received by a receiving device via different antennas or different antenna combinations. Each of the plurality of signals may be referred to as a separate spatial stream and may carry bits associated with the same data stream (e.g., the same codeword) or a different data stream (e.g., a different codeword). Different spatial layers may be associated with different antenna ports that are used for channel measurements and reporting. MIMO techniques include single user MIMO (SU-MIMO) in which multiple spatial layers are transmitted to the same receiving device and multi-user MIMO (MU-MIMO) in which multiple spatial layers are transmitted to multiple devices.

Beamforming (which may also be referred to as spatial filtering, directional transmission, or directional reception) is a signal processing technique that may be used at a transmitting device or a receiving device (e.g., base station 105, UE 115) to shape or steer antenna beams (e.g., transmit beams, receive beams) along a spatial path between the transmitting device and the receiving device. Beamforming may be implemented by combining signals transmitted via antenna elements of an antenna array such that some signals propagating in a particular orientation relative to the antenna array experience constructive interference while other signals experience destructive interference. The adjustment of the signal transmitted via the antenna element may include the transmitting device or the receiving device applying an amplitude offset, a phase offset, or both, to the signal carried via the antenna element associated with the device. The adjustment associated with each of the antenna elements may be defined by a set of beamforming weights associated with a particular orientation (e.g., with respect to an antenna array of the transmitting device or the receiving device or with respect to some other orientation).

The base station 105 or UE 115 may use beam scanning techniques as part of the beam forming operation. For example, the base station 105 may perform beamforming operations using multiple antennas or antenna arrays (e.g., antenna panels) to directionally communicate with the UE 115. Some signals (e.g., synchronization signals, reference signals, beam selection signals, or other control signals) may be transmitted multiple times in different directions by the base station 105. For example, the base station 105 may transmit signals according to different sets of beamforming weights associated with different transmission directions. Transmissions in different beam directions may be used to identify (e.g., by a transmitting device such as base station 105, or by a receiving device such as UE 115) the beam direction for later transmission or reception by base station 105.

Some signals, such as data signals associated with a particular receiving device, may be transmitted by base station 105 in a single beam direction (e.g., a direction associated with a receiving device such as UE 115). In some examples, the beam direction associated with transmissions along a single beam direction may be determined based on signals transmitted in one or more beam directions. For example, the UE 115 may receive one or more of the signals transmitted by the base station 105 in different directions and may report an indication to the base station 105 of the signal received by the UE 115 with the highest signal quality or otherwise acceptable signal quality.

In some examples, transmissions by a device (e.g., by base station 105 or UE 115) may be performed using multiple beam directions, and the device may use a combination of digital precoding or radio frequency beamforming to generate a combined beam for transmission (e.g., from base station 105 to UE 115). UE 115 may report feedback indicating precoding weights for one or more beam directions and the feedback may correspond to multiple beams spanning a system bandwidth or configuration of one or more subbands. The base station 105 may transmit reference signals (e.g., cell-specific reference signals (CRSs), channel state information reference signals (CSI-RS)) that may be precoded or not precoded. The UE 115 may provide feedback for beam selection, which may be a Precoding Matrix Indicator (PMI) or codebook-based feedback (e.g., multi-planar codebook, linear combined codebook, port-selective codebook). Although these techniques are described with reference to signals transmitted by the base station 105 in one or more directions, the UE 115 may employ similar techniques to transmit signals multiple times in different directions (e.g., to identify beam directions for subsequent transmission or reception by the UE 115) or in a single direction (e.g., to transmit data to a receiving device).

A receiving device (e.g., UE 115) may attempt multiple reception configurations (e.g., directional listening) upon receiving various signals (such as synchronization signals, reference signals, beam selection signals, or other control signals) from base station 105. For example, the receiving device may attempt multiple receiving directions by: any of these approaches may be referred to as "listening" according to different reception configurations or reception directions by receiving via different antenna subarrays, by processing received signals according to different antenna subarrays, by receiving according to different sets of reception beamforming weights (e.g., different sets of directional listening weights) applied to signals received at multiple antenna elements of an antenna array, or by processing received signals according to different sets of reception beamforming weights applied to signals received at multiple antenna elements of an antenna array. In some examples, the receiving device may use a single receiving configuration to receive in a single beam direction (e.g., when receiving a data signal). The single receive configurations may be aligned in beam directions determined based on listening according to different receive configuration directions (e.g., beam directions determined to have the highest signal strength, highest signal-to-noise ratio (SNR), or otherwise acceptable signal quality based on listening according to multiple beam directions).

The wireless communication system 100 may be a packet-based network operating according to a layered protocol stack. In the user plane, communications at the bearer or Packet Data Convergence Protocol (PDCP) layer may be IP-based. The Radio Link Control (RLC) layer may perform packet segmentation and reassembly for transmission over logical channels. A Medium Access Control (MAC) layer may perform priority processing and multiplexing of logical channels to transport channels. The MAC layer may also use error detection techniques, error correction techniques, or both to support retransmissions at the MAC layer to improve link efficiency. In the control plane, a Radio Resource Control (RRC) protocol layer may provide for the establishment, configuration, and maintenance of an RRC connection between the UE 115 and the base station 105 or core network 130, which supports radio bearers for user plane data. At the physical layer, the transport channel may be mapped to a physical channel.

The UE 115 and the base station 105 may support retransmission of data to increase the likelihood that the data is successfully received. Hybrid automatic repeat request (HARQ) feedback is a technique for increasing the likelihood that data is properly received over the communication link 125. HARQ may include a combination of error detection (e.g., using Cyclic Redundancy Check (CRC)), forward Error Correction (FEC), and retransmission (e.g., automatic repeat request (ARQ)). HARQ may improve throughput at the MAC layer under severe radio conditions (e.g., low signal-to-noise conditions). In some examples, a device may support the same slot HARQ feedback, where the device may provide HARQ feedback in a particular slot for data received in a previous symbol of the slot. In other cases, the device may provide HARQ feedback in a subsequent time slot or according to some other time interval.

In some examples, a first relay node (e.g., base station 105) may communicate with a second relay node (e.g., a child of the first relay node, which may be one example of base station 105) according to a resource configuration. The resource configurations may be associated with respective sets of Resource Blocks (RBs) and respective time domain modes. Each time domain mode may indicate a resource type associated with an availability of each symbol for communication by the first relay node with the second relay node for each symbol in a respective set of symbols associated with each time domain mode.

In some examples, a control node (e.g., a central control node and/or a parent node of a first relay node, which may be one example of base station 105) may send an indication of a resource configuration to the first relay node for configuring the resource configuration for the first relay node. To update the resource configuration, the control node may send the updated resource configuration to the first relay node. However, sending an indication of the updated resource configuration to the first relay node each time the resource configuration at the first relay node is to be updated may be associated with a latency above a threshold amount or an overhead above a threshold amount.

Fig. 2 illustrates an example of a node configuration scheme 200 supporting adaptive frequency domain resource configuration for relay nodes in accordance with aspects of the present disclosure. In some examples, node configuration scheme 200 may implement one or more aspects of fig. 1. For example, the central control node 210 and one or more of the relay nodes 215-a, 215-b, 215-c, and 215-d may be one example of the base station 105 as described with reference to fig. 1, and the UE 115-a may be one example of the UE 115 as described with reference to fig. 1.

The core network 205 may be coupled (e.g., via a wired connection such as a fiber optic connection) to a Central Unit (CU) 206 of a central control node 210 via a communication link 207. The Distribution Unit (DU) 212-a of the central control node 210 may be coupled with the UE 115-a via the communication link 208, with the Mobile Terminal (MT) 213-a of the relay node 215-a via the communication link 220-a, and with the MT 213-b of the relay node 215-b via the communication link 220-b. The relay node 215-a may include a DU 212-b and the relay node 215-b may include a DU 212-c. The DU 212-b of the relay node 215-a may be coupled with the MT 213-c of the relay node 215-c via the communication link 220-c, and the DU 212-c of the relay node 215-c may be coupled with the MT 213-d of the relay node 215-d via the communication link 220-d. The relay node 215-d may include a DU 212-e.

In some examples, central control node 210 may be a parent node of relay nodes 215-a and 215-b (e.g., relay nodes 215-a and 215-b may be child nodes of central control node 210). The relay node 215-a may be a parent node of the relay node 215-c (e.g., the relay node 215-c may be a child node of the relay node 215-a), and the relay node 215-c may be a parent node of the relay node 215-d (e.g., the relay node 215-d may be a child node of the relay node 215-c).

In some examples, a relay node 215-c (e.g., DU 212-d of relay node 215-c) may communicate with a relay node 215-d (e.g., MT 213-d of relay node 215-d) according to a resource configuration. The resource configuration may be associated with a respective set of RBs and a respective time domain mode. Each time-domain pattern may indicate, for each symbol in a respective set of symbols associated with each time-domain pattern, a resource type associated with an availability of each symbol for communication by relay node 215-c with relay node 215-d.

In some examples, the relay node 215-a may send an indication of the resource configuration to the relay node 215-c (e.g., from the DU 212-b of the relay node 215-a to the MT 213-c of the relay node 215-c) for configuring the resource configuration for the relay node 215-c. Additionally or alternatively, the central control node 210 may send an indication of the resource configuration to the relay node 215-c for configuring the resource configuration for the relay node 215-c. To update the resource configuration, the relay node 215-a or the central control node 210 may send the updated resource configuration to the relay node 215-c. However, each time the resource configuration at the relay node 215-c is to be updated, sending an indication of the updated resource configuration to the relay node 215-c may be associated with increased latency or overhead.

To reduce latency and/or overhead, the relay node 215-a or the central control node 210 may send an indication of the set of resource configurations for the relay node 215-c. When the resource configuration at the relay node 215-c is to be updated, the relay node 215-a may send an indication 225-a to communicate according to one or more of the set of resource configurations (e.g., the relay node 215-a may send an indication to activate one or more of the set of resource configurations). Additionally or alternatively, the central control node 210 may send an indication 225-b to communicate according to one or more of the set of resource configurations (e.g., the relay node 215-a may relay an indication to activate one or more of the set of resource configurations). The indication 225-a or 225-b to communicate according to one or more resource configurations in the set of resource configurations may be associated with a lower latency or lower overhead than the indication of updated resource configurations each time the resource configuration of the relay node 215-c is to be transmitted.

In some examples, the central control node 210 may be an Integrated Access Backhaul (IAB) donor. The IAB donor may be an enhanced gNB node with functionality for controlling an IAB network. CU 206 may be a central entity configured to control part or all of the IAB network (e.g., CU 206 may hold RRC and/or PDCP layer functions). DU 212 (e.g., DU 212-a, 212-b, 212-c, 212-d, or 212-e) may be a scheduling node that schedules child nodes of IAB donors. The DU 212 may include a Radio Link Control (RLC) function, a Medium Access Control (MAC) function, a Physical (PHY) layer function, or any combination thereof.

In some examples, relay nodes 215-a, 215-b, 215-c, and 215-d may be IAB nodes. The IAB node may be a layer 2 (L2) relay node including DU 212 functionality and/or MT 213 functionality. An MT (which may be referred to as a mobile terminal, for example) may be a scheduled node similar to UE 115 in one or more aspects and may be scheduled by a parent IAB node or IAB donor. The DU 212 may be a scheduling node that schedules child nodes of the IAB node. In some examples, communication link 208 may be referred to as a wireless access link, and communication links 220-a, 220-b, 220-c, and 220-d may be referred to as wireless backhaul links.

In some examples, the IAB node may have duplex capability. For example, time Division Multiplexing (TDM) may be used between the parent backhaul link and the child link. Enhanced duplex capability may support one or more simultaneous operations over pairs of MT Component Carriers (CCs) and DU cells. The TDM mode may support an active parent backhaul link (e.g., where the parent node of the IAB node communicates with the IAB node) and/or an active child link (e.g., where the child node of the IAB node communicates with the IAB node). The first Space Division Multiplexing (SDM) mode (e.g., half duplex mode) may support the IAB node to receive transmissions (e.g., MT-RX/DU-RX) from or send transmissions (e.g., MT-RX/DU-RX) to both the child and parent nodes of the IAB node. The second SDM mode (e.g., full duplex) may support the IAB node sending transmissions to the child node (e.g., MT-RX/DU-TX) while receiving transmissions from the parent node and/or receiving transmissions from the child node (e.g., MT-TX/DU-RX) while sending transmissions to the parent node. In some examples, the second SDM mode may support communications supported by the first SDM mode (e.g., MT-RX, DU-RX) and the TDM mode, and the first SDM mode may support communications supported by the TDM mode.

Fig. 3A illustrates an example of a source configuration scheme 300-a supporting adaptive frequency domain resource configuration for a relay node in accordance with aspects of the present disclosure. In some examples, the resource configuration scheme 300-a may implement one or more aspects of the wireless communication system 100 and/or the resource configuration scheme 300-a. For example, the control node 305-a and the relay node 310-a may each be an example of the relay node 215 as described with reference to fig. 2 and/or the base station 105 as described with reference to fig. 1. In some examples, MTs 213-e, 213-f, and 213-g may each be an example of MT 213 as described with reference to FIG. 2, and DUs 212-f and 212-g may each be an example of DU 212 as described with reference to FIG. 2. Additionally or alternatively, the MT 213-g may be an example of the UE 115 as described with reference to fig. 1.

The control node 305-a may include an MT 213-e and a DU 212-f, and the relay node 310-a may include an MT 213-f and a DU 212-g. In general, the DU 212-f of the control node 305-a may be configured to communicate with the MT 213-f of the relay node 310-a, and the DU 212-g of the relay node 310-a may be configured to communicate with the MT 213-g (e.g., the UE 115 or the relay node 215). In general, the control node 305-a may be a parent node of the relay node 310-a (e.g., the relay node 310-a may be a child node of the control node 305-a).

In some examples, the control node 305-a may be configured with a resource configuration. The resource configuration may include a time domain pattern associated with a set of symbols (e.g., symbols 315-a) and one or more RB sets 320-a. The time domain pattern may indicate, for each symbol 315-a in the set of symbols, a resource type in the set of resource types associated with the availability of each symbol 315-a for communication by the control node 305-a with the relay node 310-a. For example, a given symbol 315-a may be associated with the following resource types in the set of resource types: a first resource type (e.g., a hard resource type, which may correspond to available resources 325-a) associated with symbol 315-a available for communication by control node 305-a; a second resource type (e.g., a non-available resource type, which may correspond to non-available resource 330-a) associated with symbol 315-a being unavailable for communication by control node 305-a; or a third resource type (e.g., a soft resource type, which may correspond to the conditionally available resource 335-a) associated with the symbol 315-a being conditionally available for communication by the control node 305-a. RB set 320-a may be included within a Component Carrier (CC).

Similarly, relay node 310-a may be configured with a resource configuration. The resource configuration may include a time domain pattern associated with a set of symbols (e.g., symbols 315-a) and one or more RB sets 320-a. The time domain pattern may indicate, for each symbol 315-a in the set of symbols, a resource type in the set of resource types associated with the availability of each symbol 315-a for communication by the relay node 310-a with the MT 213-g. For example, a given symbol 315-a may be associated with the following resource types in the set of resource types: a first resource type (e.g., a hard resource type) associated with the symbol 315-a available for communication by the relay node 310-a; a second resource type (e.g., a non-available resource type) associated with symbol 315-a being unavailable for communication by relay node 310-a; or a third resource type (e.g., a soft resource type) associated with the symbol 315-a being conditionally available for communication by the relay node 310-a. RB set 320-a may be included in a CC.

In some examples, the control node 305-a (e.g., DU 212-f of the control node 305-a) may communicate with the relay node 310-a (e.g., MT 213-f of the relay node 310-a) according to a resource configuration. The resource configuration may be associated with a respective set of RBs and a respective time domain mode. Each time-domain mode may indicate, for each symbol in a respective set of symbols associated with each time-domain mode, a resource type associated with an availability of each symbol for communication by relay node 310-a.

In some examples, the control node 305-a may send an indication of the resource configuration to the relay node 310-a (e.g., from the DU 212-f of the control node 305-a to the MT 213-f of the relay node 310-a) for configuring the resource configuration for the relay node 310-a. To update the resource configuration, the control node 305-a may send the updated resource configuration to the relay node 310-a. However, sending an indication of the updated resource configuration to the relay node 310-a each time the resource configuration at the relay node 310-a is to be updated may be associated with a latency above a threshold amount or an overhead above a threshold amount.

The control node 305-a may send an indication of the set of resource configurations for the relay node 310-a. When the resource configuration at the relay node 310-a is to be updated, the control node 305-a may send an indication to communicate according to one or more of the set of resource configurations (e.g., the control node 305-a may send an indication to activate one or more of the set of resource configurations). The indication to communicate according to one or more resource configurations in the set of resource configurations may be associated with a lower latency or lower overhead than the indication of updated resource configurations each time the resource configuration of the relay node 310-a is to be transmitted.

Fig. 3B illustrates an example of a resource configuration scheme 300-B supporting adaptive frequency domain resource configuration for a relay node in accordance with aspects of the present disclosure. In some examples, the resource configuration scheme 300-b may implement one or more aspects of the wireless communication system 100 or 200 and/or the resource configuration scheme 300-a. For example, the control node 305-b may be an example of the central control node 210 as described with reference to fig. 2, and the relay node 310-b may be an example of the relay node 215 as described with reference to fig. 2 and/or the base station 105 as described with reference to fig. 1. In some examples, CU 206-a may be an example of CU 206 as described with reference to FIG. 2, MTs 213-h and 213-i may each be an example of MT 213 as described with reference to FIG. 2, and DUs 212-h and 212-i may each be an example of DU 212 as described with reference to FIG. 2. Additionally or alternatively, the MT 213-i may be an example of the UE 115 as described with reference to fig. 1. In some examples, multi-hop communications may occur between control node 305-b and relay node 310-b. The control node 305-b may be directly connected to the relay node 310-b via the communication link 220-e, or the communication link 220-e may include one or more hops (e.g., other relay nodes 310) between the control node 305-b and the relay node 310-b.

The control node 305-b may include a CU 206-a and a DU 212-h, and the relay node 310-b may include a MT 213-h and a DU 212-i. In general, the DU 212-h of the control node 305-b may be configured to communicate with the MT 213-h of the relay node 310-b, and the DU 212-i of the relay node 310-b may be configured to communicate with the MT 213-i (e.g., the UE 115 or the relay node 215).

In some examples, control node 305-b may be configured with a resource configuration. The resource configuration may include a time domain pattern associated with a set of symbols (e.g., symbols 315-b) and one or more RB sets 320-b. The time domain pattern may indicate, for each symbol 315-b in the set of symbols, a resource type in the set of resource types associated with the availability of each symbol 315-b for communication by the control node 305-b with the relay node 310-b. For example, a given symbol 315-b may be associated with the following resource types in the set of resource types: a first resource type (e.g., a hard resource type) associated with the symbol 315-b available for communication by the control node 305-b; a second resource type (e.g., a non-available resource type) associated with symbol 315-b being unavailable for communication by control node 305-b; or a third resource type (e.g., a soft resource type) associated with symbol 315-b being conditionally available for communication by control node 305-b. RB set 320-b may be included within a Component Carrier (CC).

Similarly, relay node 310-b may be configured with a resource configuration. The resource configuration may include a time domain pattern associated with a set of symbols (e.g., symbols 315) and one or more RB sets 320. The time domain pattern may indicate, for each symbol 315-b in the set of symbols, a resource type in the set of resource types associated with the availability of each symbol 315-b for communication by the relay node 310-b with the MT 213-i. For example, a given symbol 315-b may be associated with the following resource types in the set of resource types: a first resource type (e.g., a hard resource type, which may correspond to available resources 325-b) associated with the symbol 315-b available for communication by the relay node 305-b; a second resource type (e.g., a non-available resource type, which may correspond to non-available resources 330-b) associated with symbol 315-b being unavailable for communication by relay node 305-b; or a third resource type (e.g., a soft resource type, which may correspond to the conditionally available resource 335-b) associated with the symbol 315-a being conditionally available for communication by the relay node 305-b. RB set 320-b may be included in the CC.

In some examples, the control node 305-b (e.g., DU 212-h of the control node 305-b) may communicate with the relay node 310-b (e.g., MT 213-h of the relay node 310-b) according to the resource configuration. The resource configuration may be associated with a respective set of RBs and a respective time domain mode. Each time-domain mode may indicate, for each symbol in a respective set of symbols associated with each time-domain mode, a resource type associated with an availability of each symbol for communication by relay node 310-b.

In some examples, the control node 305-b may send an indication of the resource configuration to the relay node 310-b (e.g., from the DU 212-h of the control node 305-b to the MT 213-h of the relay node 310-b) for configuring the resource configuration for the relay node 310-b. To update the resource configuration, the control node 305-b may send the updated resource configuration to the relay node 310-b. However, sending an indication of the updated resource configuration to the relay node 310-b each time the resource configuration at the relay node 310-b is to be updated may be associated with a latency above a threshold amount or an overhead above a threshold amount.

The control node 305-b may send an indication of the set of resource configurations for the relay node 310-b. When the resource configuration at the relay node 310-b is to be updated, the control node 305-b may send an indication to communicate according to one or more of the set of resource configurations (e.g., the control node 305-b may send an indication to activate one or more of the set of resource configurations). The indication to communicate according to one or more resource configurations in the set of resource configurations may be associated with a lower latency or lower overhead than the indication of updated resource configurations each time the resource configuration of the relay node 310-b is to be transmitted.

In some examples, symbols (e.g., symbols 315-a or 315-b) having non-available resource types may be used to transmit cell-specific reference signals. In some examples, a symbol (e.g., symbol 315-a or 315-b) with a soft resource type may be dynamically controlled by a parent node (e.g., control node 305-b or a different relay node 310). For example, the parent node may provide an explicit indication (e.g., downlink Control Information (DCI)) to the child node (e.g., relay node 310-b). Additionally or alternatively, the relay node 310-b may implicitly determine that the MT 213 of the child node may not be affected and perform communication over the symbol 315-a or 315-b accordingly. In some examples, an IAB resource management framework (e.g., including a semi-static resource configuration and DCI for dynamic availability indication) may support Frequency Division Multiplexing (FDM) on a granularity of carriers (e.g., per DU cell).

In some examples, semi-static DU resource type indications for hard, soft, and non-available resource types may be supported for frequency domain resources within a carrier. In some such examples, the granularity of the frequency domain resources within the carrier may have a defined value (e.g., the starting point may be a set of N RBs, where the value N≡1). In the case of coexistence between TDM and FDM operations, the time granularity of switching between multiplexing options may follow the timing of the carriers used for the access link to ensure downward compatibility with the IAB nodes and avoid impact on the access UEs 115 and their RRC configuration at CU 206. In the case of supporting soft resources in frequency domain extension, the DCI may support a dynamic indication of the availability of soft frequency resources. For example, separate indications of time and frequency resources may be supported (e.g., via different fields, different Radio Network Temporary Identifiers (RNTIs), or different DCIs), or joint indications of time and frequency resources may be supported. In some examples, FDM may be extended to cross-carrier, and restrictions on the minimum bandwidth or frequency band (e.g., FR2, > 100 MHz) for FDM operation may be used.

In some examples, BWP may comprise a group of consecutive Physical RBs (PRBs) within a carrier. The one or more downlink BWP and the one or more uplink BWP may be configured for the UE 115 via dedicated RRC configuration in accordance with the serving cell. Before the RRC configuration occurs, UE 115 may use an initial downlink and/or uplink BWP, which may be broadcast in a System Information Block (SIB) such as SIB 1. In some examples, there may be at most one active downlink BWP and at most one active uplink BWP for the serving cell at a given time. UE 115 may receive and/or transmit within the active downlink and/or uplink BWP using an associated digital scheme. In some examples, BWP handover may be supported via an RRC reconfiguration-based BWP handover. For example, BWP handover from the initial BWP to the first active BWP may occur via RRC reconfiguration for the primary cell (P cell) or the special cell (SP cell) and/or upon activation of the secondary cell (S cell). The first active downlink and/or uplink BWP may be configured according to S-cell new addition, according to P-cell change in the primary cell group (MCG) and primary S-cell (PS-cell) new addition or change in the Secondary Cell Group (SCG). Additionally or alternatively, BWP handover may be supported via DCI-based BWP handover (e.g., via a BWP indicator field in DCI) or timer-based BWP handover. For example, upon expiration of a BWP inactivity timer (e.g., due to reception of DCI), the active BWP may switch the default BWP configured by RRC.

In some examples, frequency domain resource management within a cell may be supported via BWP for a DU cell. For example, separate time domain resource management (e.g., for hard resource types, soft resource types, non-available resource types) may be applied in accordance with the BWP of the DU cell. For example, an IAB resource management framework from DU cells to UR RB sets may be used, where the DU RB sets may be configured by a CU as sets of consecutive RBs within the DU cells. Additionally or alternatively, a type value may be utilized to indicate an existing time domain resource configuration (e.g., for hard resource type, soft resource type, non-available resource type) and a second configuration for each BWP across BWPs. The RB set may be associated with a granularity in the frequency domain used for resource configuration (which may be completely different from BWP in some examples).

Fig. 4 illustrates an example of a wireless communication system 400 supporting adaptive frequency domain resource configuration for relay nodes in accordance with aspects of the disclosure. In some examples, wireless communication system 400 may be implemented by one or more aspects of wireless communication system 100, node configuration scheme 200, and/or resource configuration scheme 300-a or 300-b. For example, the control node 305-c may be an example of the control node 305-B as described with reference to fig. 3B, the control node 305-a as described with reference to fig. 3A, the central control node 210 or relay node 215 as described with reference to fig. 2, the base station 105, IAB node, or IAB donor CU node as described with reference to fig. 1. The relay node 310-c may be an example of the relay node 310-B as described with reference to fig. 3B, the relay node 310-a as described with reference to fig. 3A, the relay node 215 as described with reference to fig. 2, the base station 105 or the IAB node as described with reference to fig. 1.

In some examples, the control node 305-c may send an indication 410 to the relay node 310-c of a set of resource configurations (e.g., resource configuration 405) for the relay node 310-c. Each resource configuration in the set of resource configurations may be associated with a respective set of RBs (e.g., RB set 320-a or 320-b) and a respective time domain mode. Each time-domain mode may indicate, for each symbol (e.g., symbol 315-a or 315-b) in the set of symbols associated with the time-domain mode, a resource type associated with each symbol's availability for communication by relay node 310-c with a second relay node (e.g., a child node of relay node 310-c). In some examples, control node 305-c may receive indication 410 from a parent node or central control node of control node 305-c.

In some examples, the control node 305-c may send an indication 415 to the relay node 310-c to communicate according to one or more resource configurations 405 in the set of resource configurations. For example, the control node 305-c may instruct the relay node 310-c to communicate according to a first subset of the set of resource configurations corresponding to the activated resource configuration 420 and to refrain from communicating according to a second subset of the set of resource configurations corresponding to the deactivated resource configuration 425. If the relay node 310-c is communicating according to the resource configuration before receiving the indication 415 and the indication 415 indicates that the resource configuration is a deactivated resource configuration 425, the relay node 310-c may cease communicating according to the resource configuration. Conversely, if the relay node 310-c is refraining from communicating according to the resource configuration prior to receiving the indication 415, and the indication 415 indicates that the resource configuration is an active resource configuration 420, the relay node 310-c may begin communicating according to the resource configuration. In some examples, the indication may be provided via DCI signaling or MAC control element (MAC-CE) signaling (e.g., if the control node 305-c is a parent relay node of the relay node 310-c, such as the relay node 215-a described with reference to fig. 2), or may be provided via Radio Resource Control (RRC) signaling or F1 application protocol (F1-AP) signaling (e.g., if the control node 305-c is a central control node, such as the central control node 210 described with reference to fig. 2).

In some examples, indication 415 may indicate that only resource configuration 420 is activated or only resource configuration 425 is deactivated. In the former case, the relay node 310-c may determine to avoid or cease communication according to each resource configuration in the set of resource configurations that is not indicated as active resource configuration 420 by indication 415. In the latter case, the relay node 310-c may determine to communicate or begin communicating according to each of the set of resource configurations not indicated as deactivated resource configuration 425 by the indication 415.

In some examples, relay node 310-c may be initially communicating according to a first resource configuration and indication 415 may indicate that relay node 310-b is to communicate according to a second resource configuration (e.g., the second resource configuration is active resource configuration 420). In some such examples, relay node 310-c may cease communicating according to the first resource configuration and may begin communicating according to the second resource configuration (e.g., regardless of whether the first resource configuration is explicitly indicated as deactivated resource configuration 425).

In some examples, relay node 310-c may send a request to control node 305-c to communicate according to the resource configuration. In some such examples, the indication 415 may indicate the resource configuration as an active resource configuration 420, and the relay node 310-c may communicate according to the resource configuration after receiving the indication 415. Additionally or alternatively, the relay node 310-c may send a request to the control node 305-c to cease communication according to the resource configuration. In some such examples, the indication 415 may indicate the resource configuration as a deactivated resource configuration 425, and the relay node 310-c may cease communicating according to the resource configuration after receiving the indication 415.

In some examples, relay node 310-c may set a timer based on receiving indication 415 for one or more active resource configurations 420 indicated by indication 415. Once the timer has ceased to run, the relay node 310-c may cease communicating according to the one or more activated resource configurations 420 indicated by the indication 415. In some examples, the timer may be reset based on one or more criteria. For example, if the traffic received using the active resource configuration 420 meets (e.g., exceeds or matches or exceeds) a threshold, the timer may be reset such that it takes longer for the timer to stop than if the timer was not reset.

In some examples, relay node 310-c may determine a default resource type for resources that are excluded from each resource configuration (e.g., indicated by indication 410) in the set of resource configurations. Additionally or alternatively, the relay node 310-c may determine a default resource type for resources having a resource configuration that is not explicitly indicated as an active resource configuration 420.

In some examples, the indication 415 may include an indication of one or more criteria for communicating according to the resource configuration 405 (e.g., or for ceasing to communicate according to the resource configuration 405). For example, the indication of the one or more criteria may enable the relay node 310-c to determine whether the resource configuration 405 activates the resource configuration 420 or deactivates the resource configuration 425 based on whether the one or more criteria are met. The one or more criteria may include detection of a collision between the resource configuration and another transmission, the interference metric being above a threshold amount, or both. Additionally or alternatively, the one or more criteria may include ultra-reliable low latency communication (URLLC) traffic for communications. Additionally or alternatively, the one or more criteria may include detection of an entry location or area, a speed associated with the relay node 310-c, or both.

In some examples, a first set of symbols (e.g., symbols 315-a or 315-b) associated with a first active resource configuration 420 may at least partially overlap in time, frequency, or both with a second set of symbols (e.g., symbols 315-a or 315-b) associated with a second active resource configuration 420. Alternatively, the first set of symbols may be non-overlapping with the second set of symbols.

In some examples, a first set of RBs associated with a first resource configuration 405 of the set of resource configurations may be non-overlapping in frequency with a second set of RBs associated with a second resource configuration 405 of the set of resource configurations. Additionally or alternatively, the first set of RBs may partially overlap in frequency with the second set of RBs. In some examples, the size of the first set of RBs may be the same as or may be different from the size of the second set of RBs. In some examples, a first time domain pattern associated with a first resource configuration 405 in the set of resource configurations may be different or the same as a second time domain pattern associated with a second resource configuration 405 in the set of resource configurations.

In some examples, the active resource configuration 420 may include each uplink resource configuration and the inactive resource configuration 425 may include each downlink resource configuration. In contrast, active resource configuration 420 may include each downlink resource configuration, and inactive resource configuration 425 may include each uplink resource configuration.

In some examples, a set of resource configurations 405 each limited to within a particular set of RBs (e.g., where the set of RBs may be a plurality of consecutive RBs) may be indicated to the IAB node DU by the CU in accordance with the DU cell, wherein the subset of resource configurations may be activated or deactivated according to one or more options. For example, in a first option, the donor CU may perform activation or deactivation via F1-AP signaling or RRC message. In a second option, the parent node may perform activation or deactivation using the Uu interface (e.g., using a MAC-CE or DCI from the parent DU to the IAB-MT). In some such examples, additional uplink messages from child nodes to parent nodes for local coordination may be supported (e.g., via MAC-CE or Uplink Control Information (UCI) based on a Physical Uplink Control Channel (PUCCH) or Physical Uplink Shared Channel (PUSCH)). In a third option, activation or deactivation may occur autonomously by the DU given some criteria (e.g., where the criteria may be configured or indicated by the donor CU or parent). For example, one criterion may be associated with detection of a collision or high interference, acquisition of information about allocated resources associated with other network nodes, or that a group of RBs (e.g., BWP) is deactivated or activated. Another criterion may be associated with the presence of incoming URLLC traffic (e.g., or another critical traffic type). Another criterion may be associated with whether activation or deactivation is location or speed specific. For example, if a mobile IAB enters an area, the mobile IAB may disallow one or more resource configurations (e.g., associated with one or more RB groups).

In some examples, RB sets between different resource configurations may be partially overlapping or non-overlapping, and the sizes of RB sets of different resource configurations may be the same or different. For resource configurations limited to within a given RB set, the resource patterns of one or more resource types (e.g., hard resource type, soft resource type, non-available resource type) in the time domain may be configured such that different resource configurations have separate time domain patterns, or such that different resource configurations share the same time domain pattern. In some cases, an additional attribute may be associated with each resource configuration that may enable one or more interpretations of the time domain resource type (e.g., hard resource type, soft resource type, non-available resource type) of the resource configuration.

In some examples, activation of the resource configuration may be applied to each resource or subset of resources configured by the resource configuration. For example, the resource configuration may include one or more of the following states: deactivation, activation, or partial activation (e.g., activated for a subset of resources and deactivated for the remaining resources). A default resource type may be predefined or configured by the CU for each resource that is not activated or included by the resource configuration. For example, the default resource type may be a non-available resource type. In some cases, one configuration (e.g., only one configuration) having a set of configurations may be activated. In some examples, more than one configuration may be activated and/or partially activated, where the activated resources may be non-overlapping or overlapping with the configuration (e.g., a consistent configuration). For example, a first configuration within a first set of RBs may be activated (e.g., partially activated) for each even slot, and a second configuration within a second set of RBs may be activated (e.g., partially activated) for each odd slot. In some such examples, the first set of RBs and the second set of RBs may be overlapping or non-overlapping in the frequency domain. Additionally or alternatively, a first configuration accompanying a first set of RBs may be activated for each slot, and a second configuration accompanying a second set of RBs may be activated for each slot, wherein the first and second sets of RBs are non-overlapping in the frequency domain. In some cases, a transition time for switching from one resource configuration in the first set of resources to another resource configuration in the second set of resources may be defined.

The IAB node (e.g., with MT and DU) may request (e.g., suggest) a CU to activate or deactivate a subset of its resource configurations. Activation or deactivation may be downlink or uplink specific. The timer may be associated with activation and/or deactivation. The state (e.g., activation, deactivation, partial activation, timer values) may be shared between different entities (e.g., from DU to CU, from parent DU to MT or UE, and from MT to parent DU, from CU to child DU or child MT, from CU to CU (e.g., for DU), or over the air).

In some examples, the methods described herein may be beneficial in one or more scenarios. For example, in a dynamic topology (e.g., if relay node 310-c is a mobile IAB), instead of modifying the frequency domain resource configuration, a CU may pre-configure a set of frequency domain resource configurations. A CU may activate and/or deactivate a subset of configurations on demand, and a set of parent and child IAB nodes may locally coordinate to determine configurations with no or minimal CU involvement (e.g., below a threshold amount). Additionally or alternatively, the methods described herein may be beneficial when bursty ullc traffic (e.g., ullc traffic having a density or number above a threshold) occurs in a multi-hop IAB network. In some such examples, fast adapting a Frequency Domain (FD) resource configuration (e.g., adapting the FD resource configuration within a threshold time) such as in accordance with the methods described herein may ensure that a sufficient amount of resources (e.g., above a threshold number) are available in time at any given hop. Additionally or alternatively, the methods described herein may support inter-CU dual connectivity IAB nodes (e.g., two parent nodes managed by different donor CUs). For example, instead of using inter-CU coordination via an Xn interface, the IAB node may locally coordinate with two parent nodes to adapt FD resource configuration in order to avoid or reduce (e.g., minimize) interference.

In some examples, the control node 305-c and the relay node 310-c using the methods described herein may have one or more advantages. For example, by sending an indication of the activated resource configuration 420 and/or the deactivated resource configuration 425, the control node 305-c and/or the relay node 310-c may experience one or more of reduced latency, signaling overhead, or power consumption as compared to sending the updated resource configuration whenever the relay node 310-c or the control node 305-c is about to update the resource configuration of the relay node 310-c.

Fig. 5 illustrates a process flow 500 supporting adaptive frequency domain resource configuration for a relay node in accordance with an aspect of the disclosure. In some examples, process flow 500 may be implemented by wireless communication system 100, node configuration scheme 200, resource configuration scheme 300-a or 300-b, and/or one or more aspects of wireless communication system 100. For example, the control node 305-d may be an example of the control node 305-c as described with reference to fig. 4, the control node 305-B as described with reference to fig. 3B, the control node 305-a as described with reference to fig. 3A, the central control node 210 or the relay node 215 as described with reference to fig. 2, or the base station 105 as described with reference to fig. 1. Relay nodes 310-d and 310-e may each be an example of relay node 310-c as described with reference to fig. 4, relay node 310-B as described with reference to fig. 3B, relay node 310-a as described with reference to fig. 3A, relay node 215 as described with reference to fig. 2, or base station 105 as described with reference to fig. 1.

At 505, the control node 305-d may send an indication of the set of resource configurations for the first relay node to the relay node 310-d. Each resource configuration in the set of resource configurations may be associated with a respective set of RBs and a respective time domain mode. Each time domain mode may indicate a resource type associated with an availability of each symbol for communication by the first relay node with the second relay node for each symbol in a respective set of symbols associated with each time domain mode. In some examples, a resource type may correspond to one of a set of resource types, the set of resource types including: a first resource type associated with the symbol being available for communication by the first relay node, a second resource type associated with the symbol being unavailable for communication by the first relay node, and a third resource type associated with the symbol being conditionally available for communication by the first relay node. In some examples, the control node 305-d may receive an indication of the set of resource configurations for the relay node 310-d from a parent node or central control node of the control node 305-d. The controller of the control node 305-d and/or the controller of the relay node 310-d may perform the method at 505.

At 510, the relay node 310-d may send a request to the control node 305-d to communicate according to the first resource configuration. Additionally or alternatively, the relay node 310-d may send a request to the control node 305-d to cease communication according to the first resource configuration. The controller of the control node 305-d and/or the controller of the relay node 310-d may perform the method at 510.

At 515, the control node 305-d may send an indication to the relay node 310-d to communicate according to the first resource configuration in the set of resource configurations (e.g., to activate the first resource configuration). In some examples, the control node 305-d may send an indication to the relay node 310-d to communicate according to a second resource configuration in the set of resource configurations. In some examples, receiving an indication to communicate according to a first resource configuration and an indication to communicate according to a second resource configuration may include: an indication to communicate according to a subset of a set of resource configurations is received from the control node 305-d and at the relay node 310-d, wherein the subset of the set of resource configurations comprises a first resource configuration and a second resource configuration. In some examples, the subset of the set of resource configurations may exclude at least one resource configuration in the set of resource configurations. In some examples, the subset of the set of resource configurations may include each of the set of resource configurations that is an uplink resource configuration or each of the set of resource configurations that is a downlink resource configuration. In some examples, a first set of symbols associated with a first resource configuration contracts with a second set of symbols associated with a second resource configuration at least partially overlap in time, frequency, or both or may be non-overlapping. In some examples, the relay node 310-d may receive a request to communicate according to the second resource configuration after receiving an indication to communicate according to the first resource configuration. In some examples, receiving the indication to communicate according to the first resource configuration may be based on receiving a transmission request (e.g., at 310).

Additionally or alternatively, at 515, the control node 305-d may send an indication to the relay node 310-d to cease communication according to the first resource configuration. In some examples, the control node 305-d may send an indication to the relay node 310-d to cease communication according to a subset of the set of resource configurations, where the subset of the set of resource configurations may include the first resource configuration. In some examples, the subset of the set of resource configurations may exclude at least one resource configuration in the set of resource configurations. In some examples, receiving an indication to cease communication according to the first resource configuration may be based on the transmission request (e.g., at 510). In some examples, the control node 305-d may receive an indication from a parent node or central control node of the control node 305-d to communicate according to the first resource configuration or to cease communicating according to the first resource configuration. The controller of the control node 305-d and/or the controller of the relay node 310-d may perform the method at 515.

At 520, the relay node 310-d may communicate according to the first resource configuration (e.g., with the relay node 310-e) based on receiving the indication to communicate according to the first resource configuration. In some examples, the relay node 310-d may communicate in accordance with the second resource configuration based on receiving an indication to communicate in accordance with the second resource configuration. In some examples, the relay node 310-d may exclude at least one resource configuration based on a subset of the set of resource configurations, avoiding communication according to the at least one resource configuration (e.g., with the relay node 310-e). In some examples, the relay node 310-d may cease communicating according to the first resource configuration based on receiving an indication to communicate according to the second resource configuration. In some examples, the relay node 310-d may communicate in accordance with the second resource configuration based on receiving an indication to communicate in accordance with the second resource configuration. In some examples, the relay node 310-d may exclude at least one resource configuration based on a subset of the set of resource configurations, and communicate according to the at least one resource configuration of the set of resource configurations. The controller of the control node 305-d and/or the controller of the relay node 310-d may perform the method at 520.

In some examples, the relay node 310-d may set a timer based on receiving an indication to communicate according to the first resource configuration, where communicating according to the first resource configuration may occur while the timer is running. In some examples, the relay node 310-d may cease communicating according to the first resource configuration (e.g., with the relay node 310-e) based on the timer stopping. In some examples, the relay node 310-d may reset the timer while the timer is running based on one or more criteria.

In some examples, the relay node 310-d may determine a default resource type for at least one resource configuration in the set of resource configurations. In some examples, the relay node 310-d may determine a default resource type for the set of resources that is excluded from each of the set of resource configurations.

In some examples, the indication to communicate is provided via RRC signaling, MAC-CE signaling, DCI signaling, F1AP signaling, or a combination thereof. In some examples, the indication to communicate includes an indication of one or more criteria for communicating according to the first resource configuration, and communicating according to the first resource configuration is based at least in part on whether the one or more criteria are met. In some examples, the one or more criteria include: the detection of a collision between a transmission associated with a first resource configuration and another transmission, the interference metric being above a threshold amount, or both. In some examples, the one or more criteria include ultra-reliable low latency communication traffic for the communication. In some examples, the one or more criteria include: detection of an incoming location or area, a speed associated with the first relay node meeting a threshold, or both.

In some examples, a first set of RBs contracts associated with a first resource configuration at least partially overlap in time, frequency, or both with a second set of RBs associated with a second resource configuration in the set of resource configurations. In some examples, a first set of RBs contracts associated with a first resource configuration and a second set of RBs associated with a second resource configuration in the set of resource configurations are non-overlapping in time and frequency. In some examples, a first size of a first set of RBs associated with a first resource configuration is the same as a second size of a second set of RBs associated with a second one of the resource configuration sets. In some examples, a first size of a first set of RBs associated with a first resource configuration is different from a second size of a second set of RBs associated with a second one of the resource configuration sets. In some examples, the first time domain pattern associated with the first resource configuration is different from the second time domain pattern associated with the second resource configuration in the set of resource configurations. In some examples, the first time domain pattern associated with the first resource configuration is the same as the second time domain pattern associated with the second resource configuration in the set of resource configurations.

In some examples, the second relay node is a child node of the first relay node. In some examples, the control node comprises a parent node of the first relay node or a central control node. In some examples, the central control node includes an IAB donor CU. In some examples, the first relay node comprises an IAB node.

Fig. 6 illustrates a block diagram 600 of an apparatus 605 supporting adaptive frequency domain resource configuration for a relay node in accordance with an aspect of the disclosure. The device 605 may be an example of aspects of the base station 105 as described herein. The device 605 may include a receiver 610, a transmitter 615, and a communication manager 620. The device 605 may also include a processor. Each of these components may be in communication with each other (e.g., via one or more buses).

The receiver 610 may provide means for receiving information, such as packets, user data, control information, or any combination thereof, associated with various information channels (e.g., control channels, data channels, information channels related to supporting adaptive frequency domain resource configurations for relay nodes). Information may be passed to other components of the device 605. The receiver 610 may utilize a single antenna or a set of multiple antennas.

The transmitter 615 may provide a means for transmitting signals generated by other components of the device 605. For example, the transmitter 615 may provide means for receiving information, such as packets, user data, control information, or any combination thereof, associated with various information channels (e.g., control channels, data channels, information channels related to supporting adaptive frequency domain resource configurations for relay nodes). In some examples, the transmitter 615 may be collocated with the receiver 610 in a transceiver module. The transmitter 615 may utilize a single antenna or a set of multiple antennas.

The communication manager 620, receiver 610, transmitter 615, or various combinations thereof, or various components thereof, may be an example of a means for performing various aspects of supporting adaptive frequency domain resource configuration for relay nodes as described herein. For example, the communication manager 620, the receiver 610, the transmitter 615, or various combinations or components thereof, may support methods for performing one or more of the functions described herein.

In some examples, the communication manager 620, the receiver 610, the transmitter 615, or various combinations or components thereof, may be implemented in hardware (e.g., with communication management circuitry). The hardware may include processors, digital Signal Processors (DSPs), ASICs, field Programmable Gate Arrays (FPGAs) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or any combinations thereof, configured as units for performing the functions described in the present disclosure or otherwise supporting the units. In some examples, a processor and a memory coupled to the processor may be configured to perform one or more of the functions described herein (e.g., by the processor executing instructions stored in the memory).

Additionally or alternatively, in some examples, the communication manager 620, the receiver 610, the transmitter 615, or various combinations or components thereof, may be implemented using code executed by a processor (e.g., implemented as communication management software or firmware). If implemented in code executed by a processor, the functions of the communication manager 620, receiver 610, transmitter 615, or various combinations or components thereof, may be performed by a general purpose processor, DSP, CPU, ASIC, FPGA, or any combination of these or other programmable logic devices (e.g., units configured or otherwise supporting functions for performing those described in this disclosure).

In some examples, the communication manager 620 may be configured to perform various operations (e.g., receive, monitor, transmit) using the receiver 610, the transmitter 1515, or both, or otherwise in cooperation with the receiver 610, the transmitter 615, or both. For example, the communication manager 620 may receive information from the receiver 610, send information to the transmitter 615, or be integrated with the receiver 610, the transmitter 615, or both to receive information, send information, or perform various other operations as described herein.

According to examples as disclosed herein, the communication manager 620 may support wireless communication at the first relay node. For example, the communication manager 620 may be configured or otherwise support means for receiving, from a control node, an indication of communication according to a first resource configuration of a set of resource configurations, wherein each resource configuration of the set is associated with a respective set of resource blocks and a respective time domain mode, and wherein each time domain mode indicates a resource type associated with each symbol for an availability of each symbol for communication by a first relay node with a second relay node for each symbol of a respective set of symbols associated with each time domain mode. The communication manager 620 may be configured or otherwise support means for communicating according to the first resource configuration based on receiving an indication to communicate according to the first resource configuration.

Additionally, or alternatively, the communication manager 620 may support wireless communication at the control node according to examples as disclosed herein. For example, the communication manager 620 may be configured or otherwise support means for transmitting, to a first relay node, an indication of a set of resource configurations for the first relay node, wherein each resource configuration in the set is associated with a respective set of resource blocks and a respective time domain pattern, and wherein each time domain pattern indicates, for each symbol in the respective set of symbols associated with each time domain pattern, a resource type associated with each symbol's availability for communication by the first relay node with a second relay node. The communication manager 620 may be configured or otherwise enabled to send an indication to the first relay node to communicate according to a first resource configuration of the set of resource configurations.

By including or configuring a communication manager 620 according to examples as described herein, a device 605 (e.g., a processor that controls or is otherwise coupled to a receiver 610, a transmitter 615, a communication manager 620, or a combination thereof) may support techniques for the device 605 to experience reduced latency, signaling overhead, or power consumption as compared to transmitting the updated resource configuration each time the device 605 or a child node of the device 605 is to update the resource configuration of the device 605 or a child node of the device 605, respectively.

Fig. 7 illustrates a block diagram 700 of an apparatus 705 supporting adaptive frequency domain resource configuration for a relay node in accordance with an aspect of the disclosure. Device 705 may be an example of aspects of device 605 or base station 105 as described herein. Device 705 may include a receiver 710, a transmitter 715, and a communication manager 720. Device 705 may also include a processor. Each of these components may be in communication with each other (e.g., via one or more buses).

The receiver 710 may provide means for receiving information, such as packets, user data, control information, or any combination thereof, associated with various information channels (e.g., control channels, data channels, information channels related to supporting adaptive frequency domain resource configurations for relay nodes). Information may be passed to other components of device 705. The receiver 710 may utilize a single antenna or a set of multiple antennas.

The transmitter 715 may provide a means for transmitting signals generated by other components of the device 705. For example, the transmitter 715 may provide means for receiving information, such as packets, user data, control information, or any combination thereof, associated with various information channels (e.g., control channels, data channels, information channels related to supporting adaptive frequency domain resource configurations for relay nodes). In some examples, the transmitter 715 may be collocated with the receiver 710 in a transceiver module. The transmitter 715 may utilize a single antenna or a set of multiple antennas.

The apparatus 705, or various components thereof, may be an example of means for performing various aspects of supporting adaptive frequency domain resource configuration for relay nodes as described herein. For example, communication manager 720 can include resource configuration activation component 725, communication component 730, resource configuration indication component 735, or any combination thereof. Communication manager 720 may be an example of aspects of communication manager 620 as described herein. In some examples, the communication manager 720 or various components thereof may be configured to perform various operations (e.g., receive, monitor, transmit) using or otherwise in cooperation with the receiver 710, the transmitter 715, or both. For example, the communication manager 720 may receive information from the receiver 710, send information to the transmitter 715, or be integrated with the receiver 710, the transmitter 715, or both to receive information, send information, or perform various other operations as described herein.

According to examples as disclosed herein, the communication manager 720 may support wireless communication at the first relay node. The resource configuration activation component 725 may be configured or otherwise support means for receiving an indication from the control node to communicate according to a first resource configuration of a set of resource configurations, wherein each resource configuration of the set is associated with a respective set of resource blocks and a respective time domain mode, and wherein each time domain mode indicates a resource type associated with each symbol for each symbol of a respective set of symbols associated with each time domain mode for availability of each symbol for communication by the first relay node with the second relay node. The communication component 730 may be configured or otherwise support means for communicating according to a first resource configuration based on receiving an indication to communicate according to the first resource configuration.

Additionally, or alternatively, according to examples as disclosed herein, communication manager 720 may support wireless communication at a control node. The resource configuration indication component 735 may be configured or otherwise support means for sending an indication of a set of resource configurations for a first relay node to the first relay node, wherein each resource configuration in the set is associated with a respective set of resource blocks and a respective time domain mode, and wherein each time domain mode indicates a resource type associated with each symbol for each symbol of a respective set of symbols associated with each time domain mode for availability of each symbol for communication by the first relay node with a second relay node. The resource configuration activation component 725 may be configured or otherwise support means for sending an indication to the first relay node to communicate according to a first resource configuration in the set of resource configurations.

Fig. 8 illustrates a block diagram 800 of a communication manager 820 supporting adaptive frequency domain resource configuration for relay nodes in accordance with an aspect of the disclosure. Communication manager 820 may be an example of aspects of communication manager 620, communication manager 720, or both, as described herein. The communication manager 820, or various components thereof, may be an example of a means for performing various aspects of supporting adaptive frequency domain resource configuration for relay nodes as described herein. For example, communication manager 820 can include a resource configuration activation component 825, a communication component 830, a resource configuration indication component 835, a request component 840, a timer setting component 845, a default resource type determination component 850, or any combination thereof. Each of these components may communicate with each other directly or indirectly (e.g., via one or more buses).

According to examples as disclosed herein, the communication manager 820 may support wireless communication at the first relay node. The resource configuration activation component 825 may be configured or otherwise support means for receiving, from the control node, an indication 826 of communication according to a first resource configuration of a set of resource configurations, wherein each resource configuration of the set is associated with a respective set of resource blocks and a respective time domain mode, and wherein each time domain mode indicates a resource type associated with each symbol for each symbol of a respective set of symbols associated with each time domain mode, availability of each symbol for communication by the first relay node with the second relay node. The communication component 830 may be configured or otherwise support means for communicating according to a first resource configuration based on receiving an indication to communicate according to the first resource configuration. In some examples, resource configuration activation component 825 may send to communication component 830 an indication 828 to communicate according to the first resource configuration. In some examples, communication component 830 may transmit transmission 831.

In some examples, the resource configuration activation component 825 may be configured or otherwise enabled to receive, from the control node, an indication to communicate according to a second resource configuration in the set of resource configurations. In some examples, the communication component 830 may be configured or otherwise support means for communicating according to the second resource configuration based on receiving an indication to communicate according to the second resource configuration.

In some examples, to support receiving an indication to communicate according to a first resource configuration and an indication to communicate according to a second resource configuration, resource configuration activation component 825 may be configured or otherwise support means for receiving an indication to communicate according to a subset of a set of resource configurations from a control node, wherein the subset comprises the first resource configuration and the second resource configuration.

In some examples, the subset of the set of resource configurations excludes at least one resource configuration in the set of resource configurations.

In some examples, resource configuration activation component 825 may be configured or otherwise support means for excluding at least one resource configuration based on a subset of the set of resource configurations, avoiding communication according to the at least one resource configuration.

In some examples, the default resource type determination component 850 may be configured or otherwise support a unit for determining a default resource type for at least one resource configuration in the set of resource configurations. In some examples, the resource configuration indication component 835 may send an indication 839 of the set of resource configurations to the default resource type determination component 850. Additionally, the default resource type determination component 850 can send an indication 851 of the determined default resource type to the communication component 830.

In some examples, the subset of the set of resource configurations includes each of the set of resource configurations that is an uplink resource configuration or each of the set of resource configurations that is a downlink resource configuration.

In some examples, a first symbol set contract associated with a first resource configuration at least partially overlaps with a second symbol set associated with a second resource configuration in time, frequency, or both.

In some examples, the first symbol set contract associated with the first resource configuration and the second symbol set associated with the second resource configuration are non-overlapping in time, frequency, or both.

In some examples, the resource configuration activation component 825 may be configured or otherwise enabled to receive, from the control node, an indication to communicate according to a second resource configuration in the set of resource configurations after receiving the indication to communicate according to the first resource configuration. In some examples, resource configuration activation component 825 may be configured or otherwise enabled to cease communication according to the first resource configuration based on receiving an indication to communicate according to the second resource configuration. In some examples, the communication component 830 may be configured or otherwise support means for communicating according to the second resource configuration based on receiving an indication to communicate according to the second resource configuration.

In some examples, the request component 840 may be configured or otherwise support means for sending a request 842 to a control node for communicating according to a first resource configuration, wherein the indication of communicating according to the first resource configuration is received based on the sending the request. In some examples, the request component 840 may send an indication 843 of the request to the resource configuration activation component 825.

In some examples, the resource configuration activation component 825 may be configured or otherwise enabled to receive, from the control node, an indication to cease communication according to the first resource configuration.

In some examples, the request component 840 may be configured or otherwise support means for sending a request to the control node to cease communication according to the first resource configuration, wherein receiving the indication to cease communication according to the first resource configuration is based on sending the request.

In some examples, to support receiving an indication to cease communication according to the first resource configuration, the resource configuration activation component 825 may be configured or otherwise support means for receiving an indication to cease communication according to a subset of a set of resource configurations from the control node, wherein the subset of the set of resource configurations comprises the first resource configuration.

In some examples, the communication component 830 may be configured or otherwise support means for excluding at least one resource configuration based on a subset of the set of resource configurations, communicating according to at least one resource configuration in the set of resource configurations.

In some examples, the timer setting component 845 may be configured or otherwise enabled to set a timer based on receiving an indication to communicate according to a first resource configuration, wherein the communicating according to the first resource configuration occurs while the timer is running. In some examples, the resource configuration activation component 825 may send an indication 829 of the first resource configuration to the timer setting component 845. In some examples, the timer setting component 845 may send an indication 846 to the communication component 830 that the timer is set.

In some examples, the communication component 830 may be configured or otherwise support means for stopping communication according to the first resource configuration based on a timer stop.

In some examples, the timer setting component 845 may be configured or otherwise support means for resetting a timer while the timer is running based on one or more criteria.

In some examples, the default resource type determination component 850 may be configured or otherwise support means for determining a default resource type for a set of resources that is excluded from each of the set of resource configurations.

In some examples, the indication to communicate is provided via radio resource control signaling, medium Access Control (MAC) control element signaling, downlink control information signaling, F1 application protocol (F1 AP) signaling, or a combination thereof.

In some examples, the indication to communicate includes an indication of one or more criteria for communicating according to the first resource configuration. In some examples, communicating according to the first resource configuration is based on whether one or more criteria are met.

In some examples, the one or more criteria include: the detection of a collision between a transmission associated with a first resource configuration and another transmission, the interference metric being above a threshold amount, or both.

In some examples, the one or more criteria include ultra-reliable low latency communication traffic for the communication.

In some examples, the one or more criteria include: detection of an incoming location or area, a speed associated with the first relay node meeting a threshold, or both.

In some examples, a first set of resource block contracts associated with a first resource configuration at least partially overlap in time, frequency, or both with a second set of resource blocks associated with a second resource configuration of the set of resource configurations.

In some examples, the first set of resource blocks associated with the first resource configuration contract and the second set of resource blocks associated with the second one of the set of resource configurations are non-overlapping in time and frequency.

In some examples, a first size of a first set of resource blocks associated with a first resource configuration is the same as a second size of a second set of resource blocks associated with a second resource configuration of the set of resource configurations.

In some examples, a first size of a first set of resource blocks associated with a first resource configuration is different from a second size of a second set of resource blocks associated with a second resource configuration of the set of resource configurations.

In some examples, the first time domain pattern associated with the first resource configuration is different from the second time domain pattern associated with the second resource configuration in the set of resource configurations.

In some examples, the first time domain pattern associated with the first resource configuration is the same as the second time domain pattern associated with the second resource configuration in the set of resource configurations.

In some examples, the second relay node is a child node of the first relay node.

In some examples, the control node comprises a parent node of the first relay node or a central control node.

In some examples, the central control node includes an integrated access and backhaul donor central unit.

In some examples, the first relay node includes an integrated access and backhaul node.

In some examples, the resource type corresponds to one of a set of resource types, the set of resource types including: a first resource type associated with the symbol being available for communication by the first relay node, a second resource type associated with the symbol being unavailable for communication by the first relay node, and a third resource type associated with the symbol being conditionally available for communication by the first relay node.

Additionally, or alternatively, communication manager 820 may support wireless communication at a control node according to examples as disclosed herein. The resource configuration indication component 835 may be configured or otherwise support means for transmitting an indication 837 of a set of resource configurations for a first relay node to the first relay node, wherein each resource configuration in the set is associated with a respective set of resource blocks and a respective time domain mode, and wherein each time domain mode indicates a resource type associated with each symbol for each symbol in a respective set of symbols associated with each time domain mode for availability of each symbol for communication by the first relay node with a second relay node. In some examples, the resource configuration indication component 835 may send an indication 838 of the set of resource configurations to the resource configuration activation component 825. In some examples, the resource configuration activation component 825 may be configured or otherwise enabled to send an indication 827 to the first relay node to communicate according to the first resource configuration of the set of resource configurations. In some examples, the resource configuration indication component may be configured to receive an indication 836 of the set of resource configurations.

In some examples, the resource configuration indication component 835 may be configured to or otherwise support a unit for receiving an indication of a set of resource configurations for a first relay node from a parent node of the control node or a central control node.

In some examples, the resource configuration activation component 825 may be configured or otherwise support a unit for receiving an indication to communicate according to the first resource configuration from a parent node of the control node or a central control node.

In some examples, the resource configuration activation component 825 may be configured or otherwise enabled to, after sending the indication to communicate according to the first resource configuration, send the indication to the first relay node to communicate according to the second resource configuration in the set of resource configurations.

In some examples, to support sending an indication to communicate according to a first resource configuration and an indication to communicate according to a second resource configuration, the resource configuration activation component 825 may be configured or otherwise support sending an indication to the first relay to communicate to a subset of the set of resource configurations, wherein the subset comprises the first resource configuration and the second resource configuration.

In some examples, the request component 840 may be configured or otherwise support means for receiving a request 841 from the first relay node for communication according to the first resource configuration, wherein the indication of communication according to the first resource configuration is sent based on receiving the request. In some examples, the request component 840 may send an indication 843 of the request to the resource configuration activation component 825.

In some examples, the resource configuration activation component 825 may be configured or otherwise enabled to send an indication to the first relay node to cease communication according to the first resource configuration.

In some examples, the request component 840 may be configured or otherwise support means for receiving a request from the first relay node to cease communication according to the first resource configuration, wherein sending the indication to cease communication according to the first resource configuration is based on receiving the request.

In some examples, to support sending an indication to cease communication according to the first resource configuration, the resource configuration activation component 825 may be configured or otherwise support means for sending an indication to the first relay node to cease communication according to a subset of a set of resource configurations, wherein the subset of the set of resource configurations comprises the first resource configuration.

In some examples, the indication to communicate includes an indication of one or more criteria for communicating according to the first resource configuration.

In some examples, the set of resource blocks associated with the first resource configuration at least partially overlaps in time, frequency, or both with the set of resource blocks associated with the second resource configuration in the set of resource configurations.

Fig. 9 illustrates a schematic diagram of a system 900 including an apparatus 905 supporting adaptive frequency domain resource configuration for a relay node in accordance with an aspect of the disclosure. The device 905 may be or include an example of the device 605, the device 705, or the base station 105 as described herein. The device 905 may communicate wirelessly with one or more base stations 105, UEs 115, or any combination thereof. The device 905 may include components for bi-directional voice and data communications, including components for sending and receiving communications, such as a communications manager 920, a network communications manager 910, a transceiver 915, an antenna 925, a memory 930, code 935, a processor 940, and an inter-station communications manager 945. These components may be in electronic communication or otherwise (e.g., operatively, communicatively, functionally, electronically, electrically) coupled via one or more buses (e.g., bus 950).

The network communication manager 910 may manage communications (e.g., via one or more wired backhaul links) with the core network 130. For example, the communication manager 910 can manage the transfer of data communications for a client device (such as one or more UEs 115).

In some cases, the device 905 may include a single antenna 925. However, in some other cases, the device 905 may have more than one antenna 925 that is capable of sending or receiving multiple wireless transmissions simultaneously. The transceiver 915 may communicate bi-directionally via one or more antennas 925, wired or wireless links as described herein. For example, transceiver 915 may represent a wireless transceiver and may bi-directionally communicate with another wireless transceiver. The transceiver 915 may also include a modem to modulate packets, provide the modulated packets to one or more antennas 925 for transmission, and demodulate packets received from the one or more antennas 925. The transceiver 915, or the transceiver 915 and one or more antennas 925, may be examples of a transmitter 615, a transmitter 715, a receiver 610, a receiver 710, or any combination thereof, or components thereof, as described herein.

Memory 930 may include Random Access Memory (RAM) and Read Only Memory (ROM). The memory 930 may store computer-readable, computer-executable code 935, the code 935 including instructions that, when executed by the processor 940, cause the device 905 to perform the various functions described herein. Code 935 may be stored in a non-transitory computer readable medium such as system memory or other type of memory. In some cases, code 935 may not be directly executable by processor 940, but may cause a computer (e.g., when compiled and executed) to perform the functions described herein. In some cases, memory 930 may include, among other things, a basic input/output system (BIOS) that may control basic hardware or software operations, such as interactions with peripheral components or devices.

Processor 940 may include intelligent hardware devices (e.g., general purpose processor, DSP, CPU, GPU, microcontroller, ASIC, FPGA, programmable logic device, split gate or transistor logic components, split hardware components, or any combination thereof). In some examples, processor 940 may be configured to operate the memory array using a memory controller. In some other cases, the memory controller may be integrated into the processor 940. Processor 940 may be configured to execute computer-readable instructions stored in a memory (e.g., memory 930) to cause device 905 to perform various functions (e.g., functions or tasks to support adaptive frequency domain resource configuration for relay nodes). For example, the device 905 or components of the device 905 may include a processor 940 and a memory 930 coupled to the processor 940, the processor 940 and the memory 930 configured to perform various functions described herein.

The inter-station communication manager 945 may manage communication with other base stations 105 and may include a controller or scheduler for controlling communication with UEs 115 in cooperation with other base stations 105. For example, inter-station communication manager 945 may coordinate scheduling of transmissions to UEs 115 for various interference mitigation techniques, such as beamforming or joint transmission. In some examples, the inter-station communication manager 945 may provide an X2 interface within LTE/LTE-a wireless communication network technology to provide communication between the base stations 105.

According to examples as disclosed herein, the communication manager 920 may support wireless communication at the first relay node. For example, the communication manager 920 may be configured or otherwise support means for receiving, from a control node, an indication of communication according to a first resource configuration of a set of resource configurations, wherein each resource configuration of the set is associated with a respective set of resource blocks and a respective time domain mode, and wherein each time domain mode indicates a resource type associated with each symbol for an availability of each symbol for communication by a first relay node with a second relay node for each symbol of a respective set of symbols associated with each time domain mode. The communication manager 920 may be configured or otherwise support means for communicating according to the first resource configuration based on receiving an indication to communicate according to the first resource configuration.

Additionally, or alternatively, the communication manager 920 may support wireless communication at a control node according to examples as disclosed herein. For example, the communication manager 920 may be configured or otherwise support means for transmitting, to a first relay node, an indication of a set of resource configurations for the first relay node, wherein each resource configuration in the set is associated with a respective set of resource blocks and a respective time-domain pattern, and wherein each time-domain pattern indicates, for each symbol in the respective set of symbols associated with each time-domain pattern, a resource type associated with each symbol's availability for communication by the first relay node with a second relay node. The communication manager 920 may be configured or otherwise enabled to send an indication to the first relay node to communicate according to a first resource configuration in the set of resource configurations.

By including or configuring a communication manager 920 according to examples as described herein, a device 905 may support techniques for a device 605 to experience reduced latency, signaling overhead, or power consumption as compared to transmitting an updated resource configuration each time the device 605 or a child node of the device 605 is to update the resource configuration of the device 605 or the child node of the device 605, respectively.

In some examples, the communication manager 920 may be configured to perform various operations (e.g., receive, monitor, transmit) using the transceiver 915, one or more antennas 925, or any combination thereof, or in other manners in cooperation with the transceiver 915, one or more antennas 925, or any combination thereof. Although communication manager 920 is shown as a separate component, in some examples, one or more functions described with reference to communication manager 920 may be supported or performed by processor 940, memory 930, code 935, or any combination thereof. For example, the code 935 may include instructions executable by the processor 940 to cause the device 905 to perform aspects of supporting adaptive frequency domain resource configuration for relay nodes as described herein, or the processor 940 and memory 930 may be otherwise configured to perform or support such operations.

Fig. 10 illustrates a flow chart of a method 1000 of supporting adaptive frequency domain resource configuration for a relay node in accordance with an aspect of the disclosure. The operations of method 1000 may be implemented by a base station or components thereof as described herein. For example, the operations of method 1000 may be performed by base station 105 as described with reference to fig. 1-9. In some examples, the base station may execute a set of instructions to control the functional elements of the base station to perform the described functions. Additionally or alternatively, the base station may perform aspects of the described functions using dedicated hardware.

At 1005, the method may include receiving, from a control node, an indication to communicate according to a first resource configuration of a set of resource configurations, wherein each resource configuration of the set is associated with a respective set of resource blocks and a respective time domain pattern, and wherein each time domain pattern indicates, for each symbol of a respective set of symbols associated with each time domain pattern, a resource type associated with an availability of each symbol for communication by the first relay node with a second relay node. Receiving may include identifying time-frequency resources on which an indication is to be received and receiving the indication on the time-frequency resources. Operations of 1005 may be performed according to examples as disclosed herein. In some examples, aspects of the operation of 1005 may be performed by resource configuration activation component 825 as described with reference to fig. 8.

At 1010, the method may include: based on receiving an indication to communicate according to the first resource configuration, communication is performed according to the first resource configuration. The communication may include identifying time-frequency resources on which the communication is to occur and communicating on the time-frequency resources. The operations of 1010 may be performed according to examples as disclosed herein. In some examples, aspects of operation 1010 may be performed by communication component 830 as described with reference to the figures.

Fig. 11 illustrates a flow chart of a method 1100 of supporting adaptive frequency domain resource configuration for a relay node in accordance with an aspect of the disclosure. The operations of method 1100 may be implemented by a base station or components thereof as described herein. For example, the operations of method 1100 may be performed by base station 105 as described with reference to fig. 1-9. In some examples, the base station may execute a set of instructions to control the functional elements of the base station to perform the described functions. Additionally or alternatively, the base station may perform aspects of the described functions using dedicated hardware.

At 1105, the method may include receiving, from a control node, an indication to communicate according to a first resource configuration of a set of resource configurations, wherein each resource configuration of the set is associated with a respective set of resource blocks and a respective time domain pattern, and wherein each time domain pattern indicates, for each symbol of a respective set of symbols associated with each time domain pattern, a resource type associated with an availability of each symbol for communication by the first relay node with a second relay node. Receiving may include identifying time-frequency resources on which an indication is to be received and receiving the indication on the time-frequency resources. The operations of 1105 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1105 may be performed by resource configuration activation component 825 as described with reference to fig. 8.

At 1110, the method may include: an indication to communicate according to a second resource configuration of the set of resource configurations is received from the control node. Receiving may include identifying time-frequency resources on which an indication is to be received and receiving the indication on the time-frequency resources. The operations of 1110 may be performed according to examples as disclosed herein. In some examples, aspects of the operation of 1110 may be performed by resource configuration activation component 825 as described with reference to fig. 8.

At 1115, the method may include: based on receiving an indication to communicate according to the first resource configuration, communication is performed according to the first resource configuration. The communication may include identifying time-frequency resources on which the communication is to occur and communicating on the time-frequency resources. The operation of 1115 may be performed according to examples as disclosed herein. In some examples, aspects of operation 1115 may be performed by communication component 830 as described with reference to the figures.

At 1120, the method may include: based on receiving an indication to communicate according to the second resource configuration, communication is performed according to the second resource configuration. The communication may include identifying time-frequency resources on which the communication is to occur and communicating on the time-frequency resources. The operations of 1120 may be performed according to examples as disclosed herein. In some examples, aspects of operation 1120 may be performed by communication component 830 as described with reference to the figures.

Fig. 12 illustrates a flow chart of a method 1200 of supporting adaptive frequency domain resource configuration for a relay node in accordance with an aspect of the disclosure. The operations of method 1200 may be implemented by a base station or components thereof as described herein. For example, the operations of method 1200 may be performed by base station 105 as described with reference to fig. 1-9. In some examples, the base station may execute a set of instructions to control the functional elements of the base station to perform the described functions. Additionally or alternatively, the base station may perform aspects of the described functions using dedicated hardware.

At 1205, the method may include: an indication of a set of resource configurations for the first relay node is sent to the first relay node, wherein each resource configuration in the set is associated with a respective set of resource blocks and a respective time domain pattern, and wherein each time domain pattern indicates a resource type associated with availability of each symbol for communication by the first relay node with the second relay node for each symbol in the respective set of symbols associated with each time domain pattern. Transmitting may include identifying time-frequency resources on which an indication is to be transmitted and transmitting the indication on the time-frequency resources. Operations of 1205 may be performed in accordance with examples as disclosed herein. In some examples, aspects of operation 1205 may be performed by resource configuration indication component 835 as described with reference to fig. 8.

At 1210, the method may include: an indication to communicate according to a first resource configuration in the set of resource configurations is sent to the first relay node. Transmitting may include identifying time-frequency resources on which an indication is to be transmitted and transmitting the indication on the time-frequency resources. The operations of 1210 may be performed according to examples as disclosed herein. In some examples, aspects of the operation of 1210 may be performed by resource configuration activation component 825 as described with reference to fig. 8.

Fig. 13 illustrates a flow chart of a method 1300 of supporting adaptive frequency domain resource configuration for a relay node in accordance with an aspect of the disclosure. The operations of method 1300 may be implemented by a base station or components thereof as described herein. For example, the operations of method 1300 may be performed by base station 105 as described with reference to fig. 1-9. In some examples, the base station may execute a set of instructions to control the functional elements of the base station to perform the described functions. Additionally or alternatively, the base station may perform aspects of the described functions using dedicated hardware.

At 1305, the method may include: an indication of a set of resource configurations for the first relay node is sent to the first relay node, wherein each resource configuration in the set is associated with a respective set of resource blocks and a respective time domain pattern, and wherein each time domain pattern indicates a resource type associated with availability of each symbol for communication by the first relay node with the second relay node for each symbol in the respective set of symbols associated with each time domain pattern. Transmitting may include identifying time-frequency resources on which an indication is to be transmitted and transmitting the indication on the time-frequency resources. The operations of 1305 may be performed according to examples as disclosed herein. In some examples, aspects of operation 1305 may be performed by resource configuration indication component 835 as described with reference to fig. 8.

At 1310, the method may include: an indication to communicate according to a first resource configuration in the set of resource configurations is sent to the first relay node. Transmitting may include identifying time-frequency resources on which an indication is to be transmitted and transmitting the indication on the time-frequency resources. Operations of 1310 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1310 may be performed by resource configuration activation component 825 as described with reference to fig. 8.

At 1315, the method may include: after sending the indication to communicate according to the first resource configuration, sending the indication to the first relay node to communicate according to the second resource configuration in the set of resource configurations. Transmitting may include identifying time-frequency resources on which an indication is to be transmitted and transmitting the indication on the time-frequency resources. The operations of 1315 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1315 may be performed by resource configuration activation component 825 as described with reference to fig. 8.

Fig. 14 illustrates a flow chart of a method 1400 of supporting adaptive frequency domain resource configuration for a relay node in accordance with an aspect of the disclosure. The operations of method 1400 may be implemented by a base station or components thereof as described herein. For example, the operations of method 1400 may be performed by base station 105 as described with reference to fig. 1-9. In some examples, the base station may execute a set of instructions to control the functional elements of the base station to perform the described functions. Additionally or alternatively, the base station may perform aspects of the described functions using dedicated hardware.

At 1405, the method may include: an indication of a set of resource configurations is transmitted with the node, wherein each resource configuration in the set is associated with a respective set of resource blocks and a respective time domain pattern, and wherein each time domain pattern indicates a resource type associated with availability of each symbol for each symbol in a respective set of symbols associated with each time domain pattern. The communication may include identifying time-frequency resources on which the communication is to occur and communicating on the time-frequency resources. The operations of 1405 may be performed according to examples as disclosed herein. In some examples, aspects of operation 1405 may be performed by resource configuration indication component 835 as described with reference to fig. 8.

At 1410, the method may include: an indication to communicate according to a first resource configuration in the set of resource configurations is transmitted with the node. The communication may include identifying time-frequency resources on which the communication is to occur and communicating on the time-frequency resources. The operations of 1410 may be performed according to examples as disclosed herein. In some examples, aspects of the operation of 1410 may be performed by resource configuration activation component 825 as described with reference to fig. 8.

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

aspect 1: a method for wireless communication at a first relay node, comprising: receiving, from a control node, an indication of communication according to a first resource configuration of a set of resource configurations, wherein each resource configuration of the set is associated with a respective set of resource blocks and a respective time domain pattern, and wherein each time domain pattern indicates, for each symbol of a respective set of symbols associated with the each time domain pattern, a resource type associated with an availability of the each symbol for communication by the first relay node with a second relay node; and based at least in part on receiving the indication to communicate in accordance with the first resource configuration, communicate in accordance with the first resource configuration.

Aspect 2: the method of aspect 1, further comprising: receiving an indication from the control node to communicate according to a second resource configuration in the set of resource configurations; and based at least in part on receiving the indication to communicate in accordance with the second resource configuration, communicate in accordance with the second resource configuration.

Aspect 3: the method of aspect 2, wherein receiving the indication to communicate according to the first resource configuration and the indication to communicate according to the second resource configuration comprises: an indication to communicate a subset according to the set of resource configurations is received from the control node, wherein the subset comprises the first resource configuration and the second resource configuration.

Aspect 4: the method of aspect 3, wherein the subset of the set of resource configurations excludes at least one resource configuration in the set of resource configurations.

Aspect 5: the method of aspect 4, further comprising: excluding the at least one resource configuration based at least in part on the subset of the set of resource configurations, avoiding communication according to the at least one resource configuration.

Aspect 6: the method of any one of aspects 4 to 5, further comprising: a default resource type for the at least one resource configuration in the set of resource configurations is determined.

Aspect 7: the method of any of aspects 3-6, wherein the subset of the set of resource configurations comprises each of the set of resource configurations that is an uplink resource configuration or each of the set of resource configurations that is a downlink resource configuration.

Aspect 8: the method of any of aspects 2-7, wherein a first set of symbols contract associated with the first resource configuration at least partially overlaps with a second set of symbols associated with the second resource configuration in time, frequency, or both.

Aspect 9: the method of any of aspects 2-8, wherein a first set of symbols associated with the first resource configuration is non-overlapping in time, frequency, or both with a second set of symbols associated with the second resource configuration.

Aspect 10: the method of any one of aspects 1 to 9, further comprising: receiving, from the control node, an indication to communicate according to a second resource configuration of the set of resource configurations after receiving the indication to communicate according to the first resource configuration; stopping communication according to the first resource configuration based at least in part on receiving the indication to communicate according to the second resource configuration; and based at least in part on receiving the indication to communicate in accordance with the second resource configuration, communicate in accordance with the second resource configuration.

Aspect 11: the method of any one of aspects 1 to 10, further comprising: a request to communicate in accordance with the first resource configuration is sent to the control node, wherein the indication to communicate in accordance with the first resource configuration is received based at least in part on sending the request.

Aspect 12: the method of any one of aspects 1 to 11, further comprising: an indication to cease communication according to the first resource configuration is received from the control node.

Aspect 13: the method of aspect 12, further comprising: transmitting a request to the control node to cease communication according to the first resource configuration, wherein receiving the indication to cease communication according to the first resource configuration is based at least in part on transmitting the request.

Aspect 14: the method of any of aspects 12-13, wherein receiving the indication to cease communication according to the first resource configuration comprises: an indication to cease communication according to a subset of the set of resource configurations is received from the control node, wherein the subset of the set of resource configurations includes the first resource configuration.

Aspect 15: the method of aspect 14, wherein the subset of the set of resource configurations excludes at least one resource configuration in the set of resource configurations.

Aspect 16: the method of aspect 15, further comprising: excluding the at least one resource configuration based at least in part on the subset of the set of resource configurations, communicating according to the at least one resource configuration in the set of resource configurations.

Aspect 17: the method of any one of aspects 1 to 16, further comprising: a timer is set based at least in part on receiving the indication to communicate in accordance with the first resource configuration, wherein communicating in accordance with the first resource configuration occurs while the timer is running.

Aspect 18: the method of aspect 17, further comprising: based at least in part on the timer stopping, communication according to the first resource configuration is stopped.

Aspect 19: the method of any one of aspects 17 to 18, further comprising: the timer is reset while the timer is running based at least in part on one or more criteria.

Aspect 20: the method of any one of aspects 1 to 19, further comprising: a default resource type is determined for a set of resources that is excluded from each of the set of resource configurations.

Aspect 21: the method of any of aspects 1-20, wherein the indication of communication is provided via radio resource control signaling, medium Access Control (MAC) control element signaling, downlink control information signaling, F1 application protocol (F1 AP) signaling, or a combination thereof.

Aspect 22: the method of any of aspects 1-21, wherein the indication to communicate comprises an indication of one or more criteria for communicating according to the first resource configuration, and the communication according to the first resource configuration is based at least in part on whether the one or more criteria are met.

Aspect 23: the method of aspect 22, wherein the one or more criteria include: detection of a collision between a transmission associated with the first resource configuration and another transmission, an interference metric being above a threshold amount, or both.

Aspect 24: the method of any of aspects 22-23, wherein the one or more criteria include ultra-reliable low-latency communication traffic for transmission.

Aspect 25: the method of any of aspects 22-24, wherein the one or more criteria include detection of an entry location or area, a speed associated with the first relay node meeting a threshold, or both.

Aspect 26: the method of any one of claims 1 to 25, wherein a first set of resource blocks associated with the first resource configuration and a second set of resource blocks associated with a second one of the set of resource configurations overlap at least in part in time, frequency, or both.

Aspect 27: the method of any one of aspects 1-26, wherein a first set of resource blocks associated with the first resource configuration and a second set of resource blocks associated with a second one of the set of resource configurations are non-overlapping in time and frequency.

Aspect 28: the method of any one of aspects 1-27, wherein a first size of a first set of resource blocks associated with the first resource configuration is the same as a second size of a second set of resource blocks associated with a second one of the set of resource configurations.

Aspect 29: the method of any one of aspects 1-28, wherein a first size of a first set of resource blocks associated with the first resource configuration is different from a second size of a second set of resource blocks associated with a second one of the set of resource configurations.

Aspect 30: the method of any one of aspects 1-29, wherein a first time domain pattern associated with the first resource configuration is different from a second time domain pattern associated with a second resource configuration in the set of resource configurations.

Aspect 31: the method of any one of aspects 1-30, wherein a first time domain pattern associated with the first resource configuration is the same as a second time domain pattern associated with a second resource configuration in the set of resource configurations.

Aspect 32: the method of any one of aspects 1-31, wherein the second relay node is a child node of the first relay node.

Aspect 33: the method of any one of aspects 1-32, wherein the control node comprises a central control node or a parent node of the first relay node.

Aspect 34: the method of aspect 33, wherein the central control node comprises an integrated access and backhaul donor central unit.

Aspect 35: the method of any one of aspects 1-34, wherein the first relay node comprises an integrated access and backhaul node.

Aspect 36: the method of any one of aspects 1 to 35, wherein the resource type corresponds to one of a set of resource types, the set of resource types comprising: a first resource type associated with a symbol being available for communication by the first relay node, a second resource type associated with the symbol being unavailable for communication by the first relay node, and a third resource type associated with the symbol being conditionally available for communication by the first relay node.

Aspect 37: a method for controlling wireless communication at a node, comprising: transmitting, to a first relay node, an indication of a set of resource configurations for the first relay node, wherein each resource configuration in the set is associated with a respective set of resource blocks and a respective time domain pattern, and wherein each time domain pattern indicates, for each symbol in a respective set of symbols associated with the each time domain pattern, a resource type associated with the availability of the each symbol for communication by the first relay node with a second relay node; and sending an indication to the first relay node to communicate according to a first resource configuration of the set of resource configurations.

Aspect 38: the method of aspect 37, further comprising: the indication of the set of resource configurations for the first relay node is received from a parent node or a central control node of the control node.

Aspect 39: the method of any one of aspects 37 to 38, further comprising: the indication to communicate according to the first resource configuration is received from a parent node or a central control node of the control node.

Aspect 40: the method of any one of aspects 37 to 39, further comprising: after sending the indication to communicate according to the first resource configuration, sending an indication to the first relay node to communicate according to a second resource configuration in the set of resource configurations.

Aspect 41: the method of aspect 40, wherein transmitting the indication to communicate according to the first resource configuration and the indication to communicate according to the second resource configuration comprises: an indication to communicate a subset according to the set of resource configurations is sent to the first relay node, wherein the subset includes the first resource configuration and the second resource configuration.

Aspect 42: the method of aspect 41, wherein the subset of the set of resource configurations excludes at least one resource configuration in the set of resource configurations.

Aspect 43: the method of any one of aspects 41-42, wherein the subset of the set of resource configurations comprises each of the set of resource configurations that is an uplink resource configuration or each of the set of resource configurations that is a downlink resource configuration.

Aspect 44: the method of any one of aspects 37 through 43, further comprising: a request to communicate in accordance with the first resource configuration is received from the first relay node, wherein the indication to communicate in accordance with the first resource configuration is sent based at least in part on receiving the request.

Aspect 45: the method of any one of aspects 37 to 44, further comprising: an indication to cease communication according to the first resource configuration is sent to the first relay node.

Aspect 46: the method of aspect 45, further comprising: a request to cease communication according to the first resource configuration is received from the first relay node, wherein sending the indication to cease communication according to the first resource configuration is based at least in part on receiving the request.

Aspect 47: the method of any of aspects 45-46, wherein sending the indication to cease communication according to the first resource configuration comprises: an indication to cease communication according to a subset of the set of resource configurations is sent to the first relay node, wherein the subset of the set of resource configurations includes the first resource configuration.

Aspect 48: the method of aspect 47, wherein the subset of the set of resource configurations excludes at least one resource configuration in the set of resource configurations.

Aspect 49: the method of any of claims 37-48, wherein the indication of communication is provided via radio resource control signaling, medium Access Control (MAC) control element signaling, downlink control information signaling, F1 application protocol (F1 AP) signaling, or a combination thereof.

Aspect 50: the method of any of claims 37-49, wherein the indication to communicate comprises an indication of one or more criteria for communicating according to the first resource configuration.

Aspect 51: the method of aspect 50, wherein the one or more criteria include: detection of a collision between a transmission associated with the first resource configuration and another transmission, an interference metric being above a threshold amount, or both.

Aspect 52: the method of any of aspects 50-51, wherein the one or more criteria include ultra-reliable low-latency communication traffic for the transmitting.

Aspect 53: the method of any of aspects 50-52, wherein the one or more criteria include detection of an entry location or area, a speed associated with the first relay node meeting a threshold, or both.

Aspect 54: the method of any of claims 37-53, wherein the set of resource blocks associated with the first resource configuration and the set of resource blocks associated with a second one of the set of resource configurations overlap at least in part in time, frequency, or both.

Aspect 55: the method of any of claims 37-54, wherein a first set of resource blocks associated with the first resource configuration and a second set of resource blocks associated with a second one of the set of resource configurations are non-overlapping in time and frequency.

Aspect 56: the method of any of claims 37-55, wherein a first size of a first set of resource blocks associated with the first resource configuration is the same as a second size of a second set of resource blocks associated with a second one of the set of resource configurations.

Aspect 57: the method of any of claims 37-56, wherein a first size of a first set of resource blocks associated with the first resource configuration is different from a second size of a second set of resource blocks associated with a second one of the set of resource configurations.

Aspect 58: the method of any of claims 37-57, wherein a first time domain pattern associated with the first resource configuration is different from a second time domain pattern associated with a second resource configuration in the set of resource configurations.

Aspect 59: the method of any of claims 37-58, wherein a first time domain pattern associated with the first resource configuration is the same as a second time domain pattern associated with a second resource configuration in the set of resource configurations.

Aspect 60: the method of any one of claims 37 to 59, wherein the resource type corresponds to one of a set of resource types, the set of resource types comprising: a first resource type associated with a symbol being available for communication by the first relay node, a second resource type associated with the symbol being unavailable for communication by the first relay node, and a third resource type associated with the symbol being conditionally available for communication by the first relay node.

Aspect 61: the method of any of claims 37 to 60, wherein the second relay node is a child node of the first relay node.

Aspect 62: the method of any of claims 37 to 61, wherein the control node comprises a central control node or a parent node of the first relay node.

Aspect 63: the method of aspect 62, wherein the central control node comprises an integrated access and backhaul donor central unit.

Aspect 64: the method of any of claims 37-63, wherein the first relay node comprises an integrated access and backhaul node.

Aspect 65: an apparatus for wireless communication at a first relay node, comprising: a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform the method of any one of aspects 1 through 36.

Aspect 66: an apparatus for wireless communication at a first relay node, comprising at least one means for performing the method of any one of aspects 1-36.

Aspect 67: a non-transitory computer-readable medium storing code for wireless communication at a first relay node, the code comprising instructions executable by a processor to perform the method of any one of aspects 1-36.

Aspect 68: an apparatus for controlling wireless communication at a node, comprising: a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform the method of any one of aspects 37 to 64.

Aspect 69: an apparatus for controlling wireless communications at a node, comprising at least one means for performing the method of any of aspects 37-64.

Aspect 70: a non-transitory computer-readable medium storing code for controlling wireless communication at a node, the code comprising instructions executable by a processor to perform the method of any of aspects 37-64.

It should be noted that the methods described herein describe possible implementations, and that operations and steps may be rearranged or otherwise modified, and that other implementations are possible. Further, aspects from two or more of these methods may be combined.

Although aspects of the LTE, LTE-A, LTE-a Pro, or NR system may be described for purposes of example, and LTE, LTE-A, LTE-a Pro, or NR terminology may be used throughout much of the specification, the techniques described herein are applicable beyond LTE, LTE-A, LTE-a Pro, or NR networks. For example, the described techniques may be applicable to various other wireless communication systems such as Ultra Mobile Broadband (UMB), institute of Electrical and Electronics Engineers (IEEE) 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, flash-OFDM, and other systems and radio technologies not explicitly mentioned herein.

Information and signals described herein may be represented using any of a variety of different technologies and techniques. For example, data, instructions, commands, information, signals, bits, symbols, and chips that may be referenced throughout the specification may be represented by voltages, currents, electromagnetic waves, magnetic fields or particles, optical fields or particles, or any combination thereof.

The various illustrative blocks and components described in connection with the disclosure herein may be implemented or performed with a general purpose processor, DSP, ASIC, CPU, 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 in the alternative, the processor may be any processor, controller, microcontroller, or state machine. A processor may also be implemented as a combination of computing devices (e.g., a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration).

The functions described herein may be implemented in hardware, software executed by a processor, firmware, or any combination thereof. If implemented in software for execution by a processor, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Other examples and implementations are within the scope of the present disclosure and the appended claims. For example, due to the nature of software, the functions described herein may be implemented using software executed by a processor, hardware, firmware, hardwired or a combination of any of these. Features that implement the functions may also be physically located at various locations including being distributed such that portions of the functions are implemented at different physical locations.

Computer-readable media includes both non-transitory computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. Non-transitory storage media may be any available media that can be accessed by a general purpose or special purpose computer. By way of example, and not limitation, non-transitory computer-readable media can comprise RAM, ROM, electrically Erasable Programmable ROM (EEPROM), flash memory, compact Disk (CD) ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other non-transitory medium that can be used to carry or store desired program code means in the form of instructions or data structures and that can be accessed by a general-purpose or special-purpose computer, or a general-purpose or special-purpose processor. Further, any connection is properly termed a computer-readable medium. For example, if the software is transmitted from a website, server, or other remote source using a coaxial cable, fiber optic cable, twisted pair, digital Subscriber Line (DSL), or wireless technologies such as infrared, radio, and microwave, then the coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave are included in the definition of computer-readable medium. Disk and disc, as used herein, includes 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 are also included within the scope of computer-readable media.

As used herein (including in the claims), a "or" as used in a list of items (e.g., a list of items beginning with a phrase such as "at least one of … …" or "one or more of … …") indicates an inclusive list such that, for example, a list of at least one of A, B or C represents a or B or C or AB or AC or BC or ABC (i.e., a and B and C). Furthermore, as used herein, the phrase "based on" should not be construed as a reference to a closed set of conditions. For example, example steps described as "based on condition a" may be based on both condition a and condition B without departing from the scope of the present disclosure. In other words, as used herein, the phrase "based on" should be interpreted in the same manner as the phrase "based at least in part on" based on.

The term "determining" or "determining" includes a variety of actions, and thus, "determining" may include computing, calculating, processing, deriving, investigating, looking up (such as via looking up in a table, a database or another data structure), determining or the like. Further, "determining" may include receiving (such as receiving information), accessing (such as accessing data in memory), and the like. Further, "determining" may include resolving, selecting, choosing, establishing, and other such similar actions.

In the drawings, similar components or features may have the same reference numerals. Further, various components of the same type may be distinguished by following the reference label by a dash and a second reference label that distinguishes among the similar components. If only the first reference label is used in the specification, the description is applicable to any one of the similar components having the same first reference label without regard to the second reference label or other subsequent reference labels.

The description set forth herein in connection with the appended drawings describes example configurations and is not intended to represent all examples that may be implemented or fall within the scope of the claims. The term "example" as used herein means "serving as an example, instance, or illustration," rather than "preferred" or "advantageous over other examples. The detailed description includes specific details for the purpose of providing an understanding of the described technology. However, the techniques may be practiced without these specific details. In some instances, well-known structures and devices are shown in block diagram form in order to avoid obscuring the concepts of the described examples.

The description herein is provided to enable any person skilled in the art to make or use the disclosure. Various modifications to the disclosure will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other variations without departing from the scope of the disclosure. Thus, the disclosure is not 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. An apparatus for wireless communication at a first relay node, comprising:

a processor;

a memory coupled with the processor; and

instructions stored in the memory and executable by the processor to cause the apparatus to:

receiving, from a control node, an indication of communication according to a first resource configuration of a set of resource configurations, wherein each resource configuration of the set is associated with a respective set of resource blocks and a respective time domain pattern, and wherein each time domain pattern indicates, for each symbol of a respective set of symbols associated with each time domain pattern, a resource type associated with the availability of the each symbol for communication by the first relay node with a second relay node; and

Based at least in part on receiving the indication to communicate in accordance with the first resource configuration, communicating in accordance with the first resource configuration.

2. The apparatus of claim 1, wherein the resource type corresponds to one of a set of resource types, the set of resource types comprising: a first resource type associated with a symbol being available for communication by a first relay node, a second resource type associated with the symbol being unavailable for communication by the first relay node, and a third resource type associated with the symbol being conditionally available for communication by the first relay node.

3. The apparatus of claim 1, wherein the instructions are further executable by the processor to cause the apparatus to:

a default resource type for a set of resources that is excluded from each of the set of resource configurations is determined.

4. The apparatus of claim 1, wherein the indication to communicate is provided via radio resource control signaling, medium Access Control (MAC) control element signaling, downlink control information signaling, F1 application protocol (F1 AP) signaling, or a combination thereof.

5. The apparatus of claim 1, wherein:

the indication of communicating comprises an indication of one or more criteria for communicating according to the first resource configuration, wherein the one or more criteria comprise: the method may further include detecting a collision between a transmission associated with the first resource configuration and another transmission, an interference indicator being above a threshold amount, ultra-reliable low latency communication traffic for the communication, detecting an ingress location or area, a speed associated with the first relay node meeting a threshold, or any combination thereof, and wherein communicating according to the first resource configuration is based at least in part on whether the one or more criteria are met.

6. The apparatus of claim 1, wherein the instructions are further executable by the processor to cause the apparatus to:

receiving an indication from the control node to communicate according to a second resource configuration in the set of resource configurations; and

based at least in part on receiving the indication to communicate in accordance with the second resource configuration, communicating in accordance with the second resource configuration.

7. The apparatus of claim 1, wherein the instructions are further executable by the processor to cause the apparatus to:

Receiving, from the control node, an indication to communicate according to a second resource configuration of the set of resource configurations after receiving the indication to communicate according to the first resource configuration;

stopping communication according to the first resource configuration based at least in part on receiving the indication to communicate according to the second resource configuration; and

8. The apparatus of claim 1, wherein a first set of resource blocks associated with the first resource configuration and a second set of resource blocks associated with a second one of the set of resource configurations are non-overlapping in time and frequency.

9. The apparatus of claim 1, wherein a first size of a first set of resource blocks associated with the first resource configuration is the same as a second size of a second set of resource blocks associated with a second one of the set of resource configurations.

10. The apparatus of claim 1, wherein a first size of a first set of resource blocks associated with the first resource configuration is different from a second size of a second set of resource blocks associated with a second one of the set of resource configurations.

11. The apparatus of claim 1, wherein a first time domain pattern associated with the first resource configuration is different from a second time domain pattern associated with a second resource configuration in the set of resource configurations.

12. The apparatus of claim 1, wherein a first time domain pattern associated with the first resource configuration is the same as a second time domain pattern associated with a second resource configuration in the set of resource configurations.

13. The apparatus of claim 1, wherein the second relay node is a child node of the first relay node and the control node comprises a central control node or a parent node of the first relay node, and wherein the central control node comprises an integrated access and backhaul donor central unit and the first relay node comprises an integrated access and backhaul node.

14. An apparatus for controlling wireless communication at a node, comprising:

a processor;

a memory coupled with the processor; and

transmitting, to a first relay node, an indication of a set of resource configurations for the first relay node, wherein each resource configuration in the set is associated with a respective set of resource blocks and a respective time domain pattern, and wherein each time domain pattern indicates, for each symbol in a respective set of symbols associated with the each time domain pattern, a resource type associated with the availability of the each symbol for communication by the first relay node with a second relay node; and

An indication to communicate according to a first resource configuration of the set of resource configurations is sent to the first relay node.

15. The apparatus of claim 14, wherein the resource type corresponds to one of a set of resource types, the set of resource types comprising: a first resource type associated with a symbol being available for communication by a first relay node, a second resource type associated with the symbol being unavailable for communication by the first relay node, and a third resource type associated with the symbol being conditionally available for communication by the first relay node.

16. The apparatus of claim 14, wherein the indication to communicate is provided via radio resource control signaling, medium Access Control (MAC) control element signaling, downlink control information signaling, F1 application protocol (F1 AP) signaling, or a combination thereof.

17. The apparatus of claim 14, wherein the indication of communication comprises an indication of one or more criteria for communicating according to the first resource configuration, wherein the one or more criteria comprise: detection of a collision between a transmission associated with the first resource configuration and another transmission, an interference indicator being above a threshold amount, ultra-reliable low latency communication traffic for the communication, detection of an ingress location or area, a speed associated with the first relay node meeting a threshold, or any combination thereof.

18. The apparatus of claim 14, wherein the instructions are further executable by the processor to cause the apparatus to:

the indication of the set of resource configurations for the first relay node is received from a parent node or a central control node of the control node.

19. The apparatus of claim 14, wherein the instructions are further executable by the processor to cause the apparatus to:

the indication to communicate according to the first resource configuration is received from a parent node or a central control node of the control node.

20. The apparatus of claim 14, wherein the instructions are further executable by the processor to cause the apparatus to:

after sending the indication to communicate according to a first resource configuration, sending an indication to the first relay node to communicate according to a second resource configuration in the set of resource configurations.

21. The apparatus of claim 14, wherein the instructions are further executable by the processor to cause the apparatus to:

a request to communicate in accordance with the first resource configuration is received from the first relay node, wherein the indication to communicate in accordance with the first resource configuration is sent based at least in part on receiving the request.

22. The apparatus of claim 14, wherein the instructions are further executable by the processor to cause the apparatus to:

an indication to cease communication according to the first resource configuration is sent to the first relay node.

23. The apparatus of claim 14, wherein a first set of resource blocks associated with the first resource configuration and a second set of resource blocks associated with a second one of the set of resource configurations are non-overlapping in time and frequency.

24. The apparatus of claim 14, wherein a first size of a first set of resource blocks associated with the first resource configuration is the same as a second size of a second set of resource blocks associated with a second one of the set of resource configurations.

25. The apparatus of claim 14, wherein a first size of a first set of resource blocks associated with the first resource configuration is different from a second size of a second set of resource blocks associated with a second one of the set of resource configurations.

26. The apparatus of claim 14, wherein a first time domain pattern associated with the first resource configuration is different from a second time domain pattern associated with a second resource configuration in the set of resource configurations.

27. The apparatus of claim 14, wherein a first time domain pattern associated with the first resource configuration is the same as a second time domain pattern associated with a second resource configuration in the set of resource configurations.

28. The apparatus of claim 14, wherein the second relay node is a child node of the first relay node and the control node comprises a central control node or a parent node of the first relay node, and wherein the central control node comprises an integrated access and backhaul donor central unit and the first relay node comprises an integrated access and backhaul node.

29. A method for wireless communication at a first relay node, comprising:

receiving, from a control node, an indication of communication according to a first resource configuration of a set of resource configurations, wherein each resource configuration of the set is associated with a respective set of resource blocks and a respective time domain pattern, and wherein each time domain pattern indicates, for each symbol of a respective set of symbols associated with the each time domain pattern, a resource type associated with an availability of the each symbol for communication by the first relay node with a second relay node; and

30. A method of controlling wireless communication at a node, comprising:

transmitting, to a first relay node, an indication of a set of resource configurations for the first relay node, wherein each resource configuration in the set is associated with a respective set of resource blocks and a respective time domain pattern, and wherein each time domain pattern indicates, for each symbol in a respective set of symbols associated with the each time domain pattern, a resource type associated with the availability of the each symbol for communication by the first relay node with a second relay node;