Main Cell Multi-Cell Scheduling Information Transmission
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Solution Overview
Problem
In Beyond 3rd Generation/4th Generation wireless communication systems, transmitting scheduling information from multiple cells to User Equipment (UE) is inefficient, especially when channel conditions are poor, leading to increased resource consumption and reduced efficiency.
Innovation Solution
A method where the main cell determines and transmits scheduling information for both itself and auxiliary cells, instructing the UE to measure antenna ports in auxiliary cells, allowing for adaptive multi-antenna mode determination and reducing the need for UE to detect control channels from all cells, thereby enhancing resource utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If each cell transmits its own scheduling information through its downlink control channel, then the scheduling information can be delivered to the UE, but the resource consumption increases and resource efficiency decreases when channel conditions are poor
Solution Approach 1:
The patent merges the scheduling information transmission function into a single main cell that transmits scheduling information for multiple cells (including itself and auxiliary cells) through its downlink control channel. This consolidation eliminates the need for each cell to separately transmit scheduling information, thereby reducing overall resource consumption while ensuring reliable delivery to the UE.
2Adaptability or versatility
If multiple cells transmit scheduling information to the UE, then comprehensive scheduling coverage is achieved, but the UE detection time and power consumption increase
Solution Approach 1:
The main cell is designed to perform multiple functions: it transmits its own scheduling information and simultaneously transmits scheduling information for auxiliary cells. This multi-functionality allows the UE to receive comprehensive scheduling information from a single cell, reducing detection time and power consumption while maintaining broad scheduling coverage.
3Productivity
If dedicated scheduling information is transmitted for each cell, then adaptive scheduling gain is maximized, but the system complexity increases
Solution Approach 1:
The patent segments the scheduling information into different types (own cell scheduling information and auxiliary cell scheduling information) and transmits them through a unified downlink control channel in the main cell. This segmentation approach maintains the adaptability and scheduling gain of dedicated scheduling while simplifying the overall system architecture by eliminating redundant transmission mechanisms.
Data Source
AI summary
A method, device and user equipment (UE) for transmitting multi-cell scheduling information is provided. When at least two cells are serving the UE, the method for transmitting multi-cell scheduling information includes the following steps: determining a main cell of the UE from the at least two cells; transmitting, in the main cell, the scheduling information of the main cell and an auxiliary cell which are serving the UE. In the technical solution provided in the embodiments of the present invention, it is in the main cell that the UE is notified about the scheduling information of the main cell and the auxiliary cell, so the utilization efficiency of the system radio resources is increased. At the same time, the UE can only detect a control channel from the main cell, thus saving the detection time and power for the control signaling.