IAB Soft Resource Management for Dynamic Availability
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Solution Overview
Problem
Existing IAB resource multiplexing solutions in wireless communication systems suffer from slow response to changes in topology, interference, and beam/power variations, limiting flexibility and performance, especially when connected to legacy IAB donors.
Innovation Solution
Implement conditional availability indication (CAI) for soft resources, allowing IAB nodes to dynamically indicate resource availability based on beam, power, and timing constraints, enhancing multiplexing capabilities and inter-donor/gNB coordination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If existing IAB resource multiplexing solutions are used, then system stability is maintained, but responsiveness to changes in topology, interference, and beam/power variations is slow
Solution Approach 1:
The patent implements dynamic resource availability indication where IAB nodes can change their resource availability status in real-time based on current beam, power, and timing conditions. This allows the system to adapt dynamically to changing topologies and interference conditions, resolving the contradiction between maintaining stability and achieving fast responsiveness.
Solution Approach 2:
The patent introduces feedback mechanisms through availability indication messages that allow IAB nodes to report their resource availability status to the network. This feedback enables the network to make informed decisions about resource allocation, improving responsiveness while maintaining systematic control to avoid excessive complexity.
2Adaptability or versatility
If soft resources are used in integrated access and backhaul, then resource multiplexing flexibility is improved, but resource availability determination becomes complex
Solution Approach 1:
The patent introduces availability indication messages as intermediaries that carry resource availability information between IAB nodes and the network. These messages simplify the determination process by providing clear availability status (available/unavailable) based on beam, power, and timing conditions, reducing the complexity of resource management while maintaining flexibility.
Solution Approach 2:
The patent changes the state parameters of soft resources from static to dynamic by introducing availability indication fields that can be set to different values (e.g., '1' for available, '0' for unavailable). This allows the system to maintain flexible resource multiplexing while simplifying availability determination through standardized parameter changes rather than complex calculations.
Data Source
AI summary
Various aspects of the present disclosure relate to soft resource management in integrated access and backhaul may be used. An apparatus includes a transceiver that receives configurations for a plurality of resource block groups, the configurations comprising an indication that the plurality of resource block groups is soft and an availability combination associated with the plurality of resource block groups and receives an availability indication control message associated with the availability combination, the availability indication control message comprising an availability indication field associated with the plurality of resource block groups. The apparatus includes a processor that determines that physical resource blocks in the plurality of resource block groups in a plurality of physical resource block groups are available in response to the availability indication field being equal to ‘1’ and unavailable in response to the availability indication field being equal to ‘0’.