MC-DCI Scheduling State Detection for Single- and Multi-Cell Control
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Solution Overview
Problem
The introduction of multi-cell DCI (MC-DCI) for scheduling multiple cells has led to challenges in determining whether the DCI is used for single or multiple cell scheduling, necessitating improved methods for terminals and network devices to correctly analyze the scheduling state.
Innovation Solution
A method for terminals to determine the scheduling state of MC-DCI by analyzing association relationships between relevant information, such as RNTI or resource usage, and indication information like RRC messages or MAC CEs, to differentiate between single and multiple cell scheduling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multi-cell DCI (MC-DCI) is introduced to schedule multiple cells, then the scheduling capability is improved, but the complexity of determining scheduling state increases
Solution Approach 1:
The patent introduces indication information as an intermediary element that carries scheduling state identification. This mediator translates the complex scheduling state (single-cell or multi-cell) into a simple indicator that terminals can easily process, thereby resolving the contradiction between enhanced scheduling capability and increased determination complexity
Solution Approach 2:
The patent changes the parameter representation of scheduling state by introducing specific indication information fields. Instead of requiring terminals to analyze complex DCI structures to determine scheduling state, the state is explicitly represented through parameter changes in the indication information, simplifying the determination process while maintaining multi-cell scheduling capability
2Productivity
If MC-DCI is used to schedule multiple cells, then resource efficiency is improved, but the accuracy of scheduling state identification deteriorates
Solution Approach 1:
The patent segments the DCI structure by separating scheduling information from state identification information. The indication information is segmented as a distinct element within DCI, dedicated solely to carrying scheduling state identification. This segmentation ensures that resource efficiency gains from MC-DCI are maintained while identification accuracy is preserved through dedicated indicator fields
3Loss of information
If single DCI schedules multiple cells, then control message overhead is reduced, but the difficulty of analyzing scheduling state increases
Solution Approach 1:
The indication information serves as an intermediary that bridges the gap between reduced overhead and increased analysis difficulty. It embeds scheduling state identification within the compact DCI structure, allowing terminals to accurately determine scheduling state without increasing overall message overhead, thus resolving the contradiction between overhead reduction and analysis difficulty
Data Source
AI summary
A scheduling determination method, performed by a terminal, includes: receiving downlink control information (DCI) sent by a network device; determining relevant information associated with the DCI; and determining a scheduling state of the DCI according to an association relationship between the relevant information and the scheduling state, where the scheduling state of the DCI comprises that the DCI is used to schedule a single cell or the DCI is used to schedule multiple cells.