DCI Message for Releasing SPS and CG Resources
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Solution Overview
Problem
Current wireless communication systems face increased control signaling overhead due to limitations in releasing multiple sets of semi-persistent scheduling (SPS) and configured grant (CG) resources across multiple component carriers using downlink control information (DCI) messages.
Innovation Solution
The described techniques enable the release of multiple sets of SPS and CG resources via a single DCI message by configuring user equipment (UE) with multiple configurations that associate DCI message indications with component carrier/resource pairs, allowing the UE to identify and release corresponding resources across multiple component carriers based on field values such as HARQ process number (HPN) and carrier indicator field (CIF) values.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple DCI messages are used to release SPS and CG resources across multiple component carriers, then resource release capability is improved, but control signaling overhead increases
Solution Approach 1:
The patent combines multiple resource release operations into a single DCI message. The base station transmits one DCI message that contains release indications for multiple SPS and/or CG resources across multiple component carriers, thereby reducing the number of separate DCI messages and lowering control signaling overhead while maintaining the ability to release multiple resource sets.
Solution Approach 2:
The DCI message is designed to serve multiple functions simultaneously. It can release SPS resources, CG resources, or both types of resources across multiple component carriers within a single message, making the DCI mechanism universal and multi-functional for resource release operations.
2Quantity of substance
If a single DCI message releases multiple resource sets, then control signaling overhead is reduced, but device complexity increases
Solution Approach 1:
The patent segments the resource release information within the single DCI message using distinct fields. Different field values indicate different release scenarios (e.g., releasing SPS resources vs. CG resources vs. both). This segmentation allows the UE to parse and process specific resource release instructions from the unified DCI message structure.
Solution Approach 2:
The patent uses parameter changes in DCI fields to convey different resource release meanings. By changing field values (such as HARQ process number, carrier indicator field, or specific release indication bits), the single DCI message can dynamically indicate which resources to release without requiring multiple separate messages or complex UE logic.
Data Source
AI summary
Methods, systems, and devices for wireless communications are described. A user equipment (UE) may identify a configuration for communications with a base station on a set of component carriers, the configuration including at least a first set of resources on a first component carrier and a second set of resources on a second component carrier. The UE may receive, from the base station, a downlink control information (DCI) message on the first component carrier, the DCI message including one or more field values indicating that the UE is to release the first set of resources on the first component carrier and the second set of resources on the second component carrier. The UE may determine, based on the received DCI message, that the first set of resources and the second set of resources are released.