Shared Channel Resource Alignment for Cross-Carrier Scheduling
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Solution Overview
Problem
The challenge lies in determining a start symbol index for the reception of a shared channel in a wireless communication system, particularly in cases involving cross-carrier scheduling among cells with different subcarrier space configurations.
Innovation Solution
The solution involves a method for efficiently determining a resource used for shared channel transmission, specifically through the use of a cross-carrier scheduling technique that aligns the start symbol index across cells with varying subcarrier space configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If cross-carrier scheduling is used among cells with different subcarrier space configurations, then resource allocation flexibility is improved, but determining the start symbol index for shared channel reception becomes complex and error-prone
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting the start symbol index based on the subcarrier space configuration parameters of different cells. When cross-carrier scheduling is detected between cells with different subcarrier spacings, the terminal adjusts the start symbol index according to the scheduled cell's configuration, resolving the complexity through systematic parameter transformation rather than ad-hoc determination
Solution Approach 2:
The patent introduces an intermediary mechanism where the start symbol index determination is mediated through the detected subcarrier space configuration. Rather than directly determining the index from multiple conflicting configurations, the system uses the scheduled cell's configuration as an intermediary reference point, simplifying the determination process while maintaining resource allocation flexibility
2Productivity
If dynamic TDD is implemented to vary the number of OFDM symbols according to data traffic directions, then data processing efficiency is improved, but slot configuration management complexity increases
Solution Approach 1:
The patent implements dynamics by enabling the slot configuration to vary dynamically according to data traffic directions. The number of OFDM symbols in uplink and downlink slots is adjusted in real-time based on traffic demands, allowing the system to optimize data processing efficiency while the base station manages the dynamic reconfiguration through standardized signaling mechanisms
3Length of stationary object
If beamforming and massive MIMO technologies are used to alleviate path loss in mmWave band, then transmission distance is improved, but system implementation complexity increases
Solution Approach 1:
The patent applies merging by combining beamforming and massive MIMO technologies to achieve the transmission distance goals in mmWave band. By integrating multiple antenna elements with beamforming capabilities, the system achieves extended transmission distance while managing implementation complexity through unified signal processing architectures
Data Source
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AI summary
In a method for transmitting and receiving a shared channel in a wireless communication system, the method performed by a terminal is characterized by comprising: a step for receiving, from a base station, first resource information for transmitting and receiving a shared channel; and a step for receiving, from the base station, the shared channel on a first resource determined on the basis of the first resource information or transmitting, to the base station, the shared channel on the first resource.