DCI Field Size Alignment for Multi-CC Scheduling
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Solution Overview
Problem
In 5G New Radio (NR) mobile networks, scheduling multiple transmissions on multiple component carriers (CCs) using a single Downlink Control Information (DCI) is challenging due to congestion on the physical downlink control channel, as existing systems require separate DCIs for each CC, leading to increased latency and resource consumption.
Innovation Solution
The system configures a single DCI to schedule multiple transmissions across multiple CCs by sharing DCI fields, allowing a single DCI to manage multiple CCs within a group, with anchor CCs having independently configured DCI fields that can be shared among CCs, thereby reducing the number of required DCIs and minimizing congestion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If separate DCIs are used for each CC, then each CC can be scheduled independently, but the physical downlink control channel becomes congested and latency increases
Solution Approach 1:
The patent merges multiple separate DCIs into a single DCI that schedules transmissions across multiple CCs. The DCI includes a CC indicator field that identifies the target CC and a shared field that contains scheduling information valid for multiple CCs, thereby reducing the total number of DCIs needed while maintaining independent scheduling capability.
Solution Approach 2:
The DCI is designed with multi-functionality to serve multiple CCs simultaneously. The shared field in the DCI contains scheduling parameters that can be applied to multiple CCs, making the single DCI universally applicable for scheduling transmissions across different component carriers without requiring separate dedicated DCIs for each.
2Device complexity
If a single DCI schedules multiple CCs, then channel congestion is reduced, but the DCI field size must accommodate the largest CC in the group
Solution Approach 1:
The patent applies local quality by making the DCI field size adaptive to the specific CC being scheduled. While the DCI structure is designed to accommodate the largest CC in the group to ensure universal compatibility, the actual field size can be reduced for smaller CCs by adjusting the CC indicator field interpretation, thereby optimizing the balance between congestion reduction and field size efficiency.
3Quantity of substance
If DCI fields are shared among CCs, then resource consumption is reduced, but field alignment across CC groups becomes complex
Solution Approach 1:
The patent segments the DCI into distinct fields: a CC indicator field that identifies the target CC, and a shared field that contains scheduling information. This segmentation allows the shared field to be aligned across different CC groups while the CC indicator field provides CC-specific identification, thereby reducing resource consumption while managing alignment complexity through structured field division.
Data Source
AI summary
Presented are systems and methods for model management. A wireless communication node can determine a configured set of at least one field of a downlink control information (DCI) signaling, that is to be shared by a plurality of transmissions, the plurality of transmissions scheduled by the DCI signaling on a plurality of component carriers (CCs). The wireless communication node can send an indication of one or more fields from the configured set to a wireless communication device via a dynamic signaling.