Multi-Cell DCI Scheduling to Cut Wireless Control Overhead
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Solution Overview
Problem
Existing wireless communication systems face inefficiencies in transmitting and receiving control and data signals, particularly in scenarios involving multiple cells, leading to increased overhead and reduced flexibility in spectrum utilization.
Innovation Solution
A method and apparatus for configuring scheduled cell sets based on RRC parameters, utilizing DCI for scheduling multiple channels across cells, allowing for efficient transmission and reception of signals in a wireless communication system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional separate scheduling methods are used for each cell, then control signaling can be transmitted to each cell independently, but control overhead increases and spectrum utilization efficiency decreases
Solution Approach 1:
The patent combines multiple cell scheduling operations into a single unified scheduling process. The base station transmits one Downlink Control Information (DCI) message that simultaneously schedules multiple channels across multiple cells, merging what would traditionally require separate control messages into a single efficient operation, thereby reducing control overhead while maintaining independent control capability for each cell
Solution Approach 2:
The DCI structure is designed with universal applicability across multiple cells. A single DCI message contains configurable parameters that can indicate different scheduled cell sets, allowing the same control mechanism to function across multiple cells with different configurations, improving spectrum utilization efficiency while avoiding the need for cell-specific control procedures
2Adaptability or versatility
If multiple separate DCI messages are transmitted for scheduling channels in multiple cells, then each channel can be scheduled independently, but control signaling overhead increases
Solution Approach 1:
The patent merges multiple independent DCI messages into a single unified DCI structure. This single DCI contains configurable fields that can indicate different scheduled cell sets, allowing it to replace multiple separate DCI messages while maintaining the ability to independently schedule channels in different cells through configuration parameters rather than separate messages
Solution Approach 2:
The invention uses configurable parameters within the DCI structure to achieve scheduling flexibility. By changing parameters such as the scheduled cell set indication and channel configuration fields within the single DCI, the system can adapt to different scheduling scenarios across multiple cells without requiring multiple fixed-format DCI messages, thereby reducing control signaling volume while preserving adaptability
Data Source
AI summary
A method and device for transmitting and receiving signals in a wireless communication system disclosed in the present application transmit and receive DCI used for scheduling of multiple channels in multiple cells with one channel per cell. The DCI includes information indicating a specific scheduled cell set among the one or more scheduled cell sets.