User Terminal Partial Resource Control for Multi-Numerology 5G
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Solution Overview
Problem
The next-generation mobile communication system faces challenges in managing communication across multiple numerologies, particularly in high-frequency bands, where existing technologies lack a control method for proper communication when multiple numerologies are introduced, leading to difficulties in achieving low latency and efficient frequency usage.
Innovation Solution
A user terminal and radio base station system that sets multiple communication parameters, allowing for the reception of information on partial resources and controlling uplink and downlink transmissions using predetermined communication parameters, enabling flexible resource allocation and management across different numerologies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple numerologies are introduced to support diverse communication requirements in 5G, then adaptability and versatility are improved, but device complexity and control difficulty increase
Solution Approach 1:
The patent segments the frequency spectrum into different partial resources, each associated with specific numerologies. The reception section receives information indicating which partial resources correspond to which numerologies, enabling the terminal to manage multiple numerologies through structured resource division rather than unified complex control
Solution Approach 2:
Different numerologies are applied to different partial resources based on local communication requirements. Each partial resource can be configured with specific numerology parameters (subcarrier spacing, TTI length) tailored to the communication needs of that particular resource block, allowing flexible adaptation without system-wide complexity
2Productivity
If carrier aggregation is used to achieve wider bandwidth, then data rate is improved, but control complexity increases
Solution Approach 1:
The patent applies segmentation to carrier aggregation by dividing the aggregated carrier into multiple partial resources, each with its own numerology configuration. This allows the terminal to receive targeted information about resource allocation for each partial resource, simplifying the control process while maintaining high data rates through aggregated bandwidth
3Loss of time
If TTI is reduced to achieve lower latency, then communication delay is improved, but processing complexity increases
Solution Approach 1:
The patent introduces dynamic TTI configuration where different partial resources can be assigned different TTI lengths based on their numerologies. This allows the system to optimize latency for critical communications by assigning shorter TTIs to appropriate partial resources while maintaining manageable processing complexity through dynamic rather than fixed configuration
Solution Approach 2:
The patent changes the TTI parameter dynamically based on the numerology of each partial resource. By receiving information about which numerologies are assigned to which partial resources, the terminal can adjust its processing parameters accordingly, reducing latency where needed without overwhelming processing complexity system-wide
Data Source
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AI summary
In order to realize proper communication in the next-generation communication system, a user terminal that performs communication through a communication system in which a plurality of communication parameters is set, includes: a reception section that receives information on a partial resource used for the communication; and a control section that controls UL transmission and/or DL reception using a predetermined communication parameter, based on the information on the partial resource. The reception section receives the information on the partial resource using higher layer signaling, a common control channel which is common to the plurality of communication parameters, or a specific control channel dedicated to each of the communication parameters.