DCI Format 2_5 Frequency-Domain Soft Resource Indication
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently managing downlink control information for frequency-domain soft resource availability indications, particularly in integrated access and backhaul networks, which affects the dynamic allocation of resources and spectral efficiency.
Innovation Solution
The enhancement of DCI format 2_5 to support frequency-domain soft resource availability indications through semi-static configuration scenarios, allowing for per-slot or per-resource type level frequency-domain hard, soft, and not available (H/S/NA) resource allocations, facilitated by F1AP signaling, enabling dynamic soft resource availability indications based on semi-static IAB-DU soft resource configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If DCI format 2_5 is enhanced to support frequency-domain soft resource availability indications, then spectral efficiency and resource management flexibility improve, but system complexity and signaling overhead increase
Solution Approach 1:
The patent segments the frequency domain into multiple resource blocks and divides soft resource availability indications into separate bit fields within DCI format 2_5. Each bit field corresponds to specific resource blocks, allowing granular control of resource availability while maintaining organized signaling structure that manages system complexity.
Solution Approach 2:
The patent extends the traditional time-domain resource allocation by adding frequency-domain dimension. Soft resource availability indications are now provided across both time slots and frequency resource blocks, creating a two-dimensional resource management framework that improves spectral efficiency without overwhelming system complexity through structured bit field organization.
2Adaptability or versatility
If dynamic soft resource availability indications are implemented, then resource allocation flexibility improves, but signaling overhead and processing latency increase
Solution Approach 1:
The patent implements semi-static configuration of soft resource availability patterns through higher-layer signaling before dynamic operation. This preliminary configuration establishes resource availability patterns in advance, reducing the need for frequent dynamic signaling and thereby lowering processing latency while maintaining allocation flexibility through subsequent dynamic adjustments.
Solution Approach 2:
The patent employs periodic updates of soft resource availability indications through DCI format 2_5 transmissions. Rather than continuous signaling, resource availability information is updated at periodic intervals aligned with slot structures, reducing signaling overhead and processing latency while maintaining adequate resource allocation flexibility for time-varying conditions.
Data Source
AI summary
An apparatus for an Integrated Access and Backhaul (IAB) node includes processing circuitry coupled to a memory. To configure the IAB node for resource availability indication in an IAB network, configuration signaling received from a CU function of an IAB donor node is decoded at a DU function of the IAB node. The configuration signaling configures a frequency-domain hard, soft, and not available (H/S/NA) resource application for a plurality of resource types. DCI received from a P-DU function of a parent IAB node is decoded at an MT function of the IAB node. The DCI includes an availability indicator for at least one soft resource region associated with the frequency-domain H/S/NA resource application. A downlink transmission by the DU function of the IAB node to a C-MIT function of a child IAB node is configured using the at least one soft resource region based on the availability indicator.