Adaptive Frame Structure Scheduling for Mobile Terminals
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Solution Overview
Problem
Current mobile communication systems face inefficiencies in utilizing frequency resources due to the fixed frame structures, which lead to suboptimal use of time and frequency resources, especially when terminals have little or no uplink data to transmit, resulting in reduced downlink transmission efficiency.
Innovation Solution
A method where a base station sets different frame structures for each terminal based on its characteristics, allowing for simultaneous operation of multiple frame structures in the same frequency band or cell, optimizing the use of time and frequency resources by minimizing uplink subframes when necessary.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a fixed frame structure is used in mobile communication systems, then system simplicity and ease of operation are maintained, but frequency resource utilization efficiency deteriorates
Solution Approach 1:
The patent applies dynamics by enabling the frame structure to change adaptively based on terminal characteristics and traffic conditions. Different frame structures (first frame structure with more uplink subframes, second frame structure with fewer uplink subframes) are dynamically selected and configured for different terminals, allowing the system to optimize frequency resource utilization while maintaining operational simplicity through automated base station control
2Adaptability or versatility
If uplink subframes are allocated in fixed frame structures, then terminal uplink transmission capability is ensured, but downlink transmission efficiency deteriorates when terminals have little or no uplink data
Solution Approach 1:
The patent applies local quality by configuring different frame structures for different terminals based on their specific characteristics and traffic needs. Terminals with primarily downlink traffic receive the second frame structure with minimized uplink subframes, while terminals requiring uplink transmission receive the first frame structure. This localized optimization allows downlink transmission efficiency to be maximized for appropriate terminals without compromising overall system adaptability
Solution Approach 2:
The patent changes the frame structure parameters (number and distribution of uplink/downlink subframes) based on terminal characteristics and traffic conditions. The base station configures appropriate frame structures dynamically, adjusting the proportion of uplink and downlink subframes to match actual transmission needs, thereby optimizing downlink efficiency when uplink data is minimal while preserving uplink capability when needed
Data Source
AI summary
The present disclosure relates to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4th-Generation (4G) communication system such as Long Term Evolution (LTE). A scheduling method by a base station in a wireless communication system, the method comprising receiving a message including capability information from a first terminal and a second terminal, setting a first secondary cell having a first frame structure to the first terminal, and setting a second secondary cell having a second frame structure to the second terminal, based on the capability information and performing scheduling for the first secondary cell and second secondary cell, wherein in the second frame structure, all subframes are at least one of a downlink subframe, an uplink subframe, and an empty subframe.