Base Station Resource Control for SBFD Maritime Cell Extension
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Solution Overview
Problem
The 5G communication system experiences reduced cell coverage, particularly in long-distance maritime areas, due to high-frequency band usage, and requires numerous expensive devices to maintain or extend coverage.
Innovation Solution
Implementing a subband non-overlapping full duplex (SBFD) technology in a dynamic time division duplexing environment, where a base station device and terminal discern communication type based on timing advance (TA) values to allocate uplink and downlink resources in frequency subbands, allowing simultaneous allocation and compensating for time delays in long-distance communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If high-frequency band is used for 5G communication, then data transmission speed is improved and latency is reduced, but cell coverage is reduced
Solution Approach 1:
The system dynamically adjusts the slot format based on the terminal's distance from the base station. For long-distance terminals, it configures slot formats with more uplink symbols and longer guard periods to accommodate larger timing advance values, while for short-distance terminals, it uses standard slot formats. This dynamic adaptation allows the system to maintain high data transmission speeds while extending cell coverage to long-distance maritime areas.
2Productivity
If dynamic time division duplexing is implemented to allocate resources according to uplink-downlink data ratio, then resource utilization is improved, but system complexity increases
Solution Approach 1:
The system changes the slot format parameters (number of uplink symbols, guard period length, flexible symbol count) based on the terminal's distance from the base station. By adjusting these parameters dynamically, the system optimizes resource utilization for different communication scenarios without requiring completely different system architectures, thus managing complexity while improving productivity.
3Area of stationary object
If slot format is optimized for long-distance communication with larger timing advance values, then cell coverage is extended, but uplink resource availability for short-distance terminals may be reduced
Solution Approach 1:
The system applies different slot format configurations to different terminals based on their distance from the base station. Long-distance terminals receive slot formats optimized for large timing advance values with extended guard periods, while short-distance terminals receive standard slot formats with more uplink resources. This localized optimization ensures each terminal gets appropriate resources without compromising overall system efficiency.
Data Source
AI summary
The present disclosure relates to a method for extending cell coverage by using a subband non-overlapping full duplex (SBFD) technology in a dynamic time division duplexing environment.