IAB Node Resource Pattern Configuration for Wireless Multi-Hop Networks
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently managing resource patterns for frequency division multiplexing within a component carrier in wireless multi-hop networks, leading to suboptimal resource utilization and increased latency.
Innovation Solution
The implementation of a method where an integrated access and backhaul (IAB) node receives a configuration indicating multiple resource patterns for slots, allowing each resource pattern to correspond to different sets of resource block (RB) sets within a component carrier. Each resource pattern includes either a resource availability pattern indicating hard, soft, or not available resources, or a resource directionality pattern indicating uplink, downlink, or flexible resources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single resource pattern is used for all slots within a component carrier, then the device complexity is reduced and configuration is simpler, but the scheduling flexibility and resource utilization efficiency deteriorate
Solution Approach 1:
The patent divides the component carrier into multiple resource block sets (RB sets), where each RB set can be independently configured with different resource patterns. This segmentation allows different parts of the frequency spectrum to have different resource allocations, achieving both simplified configuration (by treating each RB set as an independent unit) and scheduling flexibility (by allowing different patterns across different RB sets).
Solution Approach 2:
The patent enables dynamic switching between different resource patterns within the same component carrier by applying different resource patterns to different RB sets. This dynamic approach allows the system to adapt resource allocation based on varying network conditions, traffic demands, and service requirements, thereby improving scheduling flexibility without requiring complete reconfiguration of the entire carrier.
2Productivity
If multiple resource patterns are applied within a component carrier, then scheduling flexibility and resource utilization are improved, but the device complexity and configuration overhead increase
Solution Approach 1:
By segmenting the component carrier into multiple RB sets, the patent allows independent resource pattern configuration for each segment. This reduces the overall configuration complexity compared to managing a single complex pattern for the entire carrier, while still enabling multiple patterns to be applied simultaneously across different segments, thereby improving resource utilization efficiency.
Solution Approach 2:
The patent applies different resource patterns to different RB sets based on local requirements. Each RB set can have its own optimized resource pattern tailored to specific service types, traffic conditions, or frequency characteristics. This local optimization approach improves overall resource utilization without requiring complex global coordination, as each RB set can be configured and managed independently.
3Productivity
If resource patterns are frequently switched to optimize resource allocation, then resource utilization efficiency improves, but the latency and signaling overhead increase
Solution Approach 1:
The patent configures multiple resource patterns in advance within the same component carrier, so that when switching is needed, the system can immediately apply a pre-configured pattern without requiring time-consuming reconfiguration. This preliminary preparation of multiple patterns reduces switching latency while maintaining the ability to dynamically optimize resource allocation by switching between pre-configured options.
Data Source
AI summary
Aspects generally relate to wireless communication. In some aspects, an integrated access and backhaul (IAB) node may receive a configuration that indicates multiple resource patterns for one or more slots, wherein each resource pattern corresponds to a different set of one or more resource block (RB) sets within the one or more slots, and wherein each resource pattern includes at least one of: a resource availability pattern that indicates at least one of hard resources, soft resources, or not available resources for one or more RB sets corresponding to that resource pattern, or a resource directionality pattern that indicates at least one of uplink resources, downlink resources, or flexible resources for the one or more RB sets corresponding to that resource pattern. The IAB node may apply a resource pattern, of the multiple resource patterns, based at least in part on the configuration. Numerous other aspects are described.