Subband TDD Resource Allocation for 5G UE Signal Transmission
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently transmitting and receiving signals due to resource shortages and high-speed service demands, particularly in the context of 5G networks where sub-band operations and duplexing configurations complicate signal processing.
Innovation Solution
A user equipment (UE) is provided with a communication module and processor configured to manage resource allocation for downlink and uplink transmissions, employing sub-band operations and duplexing strategies to optimize signal handling in sub-band slots/symbols, including restrictions and adjustments based on channel state information and duplex configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If dynamic TDD is used to vary the number of OFDM symbols according to data traffic directions, then spectral efficiency is improved, but system complexity increases due to additional configuration requirements
Solution Approach 1:
The frequency band is divided into multiple subbands, each capable of independent TDD configuration. This allows flexible adaptation of OFDM symbol allocation in different frequency regions without requiring system-wide reconfiguration, thereby improving spectral efficiency while managing complexity through localized control
Solution Approach 2:
The patent implements dynamic TDD by allowing the base station to vary the number of downlink and uplink OFDM symbols in each subband based on real-time traffic conditions. This dynamic adjustment enables efficient resource utilization while the standardized configuration mechanisms keep complexity manageable
2Productivity
If sub-band operations are implemented for downlink reception or uplink transmission, then resource allocation efficiency is improved, but signal processing complexity increases
Solution Approach 1:
The frequency spectrum is segmented into multiple subbands, each with independent resource allocation capabilities. This segmentation allows the base station to allocate resources more efficiently by considering sub-band specific characteristics and traffic patterns, while the modular nature of subband processing helps manage overall system complexity
Solution Approach 2:
Different subbands can be configured with different TDD patterns and resource allocation strategies based on their specific requirements. This local quality approach allows optimization of resource allocation in each subband without requiring uniform treatment across the entire frequency spectrum, improving overall efficiency while keeping processing manageable through localization
3Productivity
If the number of downlink OFDM symbols is increased to accommodate larger downlink traffic, then data transmission capacity is improved, but uplink transmission opportunities are reduced
Solution Approach 1:
The frequency band is divided into multiple subbands with independent TDD configurations. This allows the system to allocate more OFDM symbols for downlink in subbands where downlink traffic is dominant, while maintaining uplink opportunities in other subbands, thereby achieving both high data transmission capacity and preserved uplink transmission opportunities through frequency-domain diversification
Solution Approach 2:
The patent enables dynamic adjustment of the number of downlink and uplink OFDM symbols in each subband based on real-time traffic conditions. When downlink traffic is high in a particular subband, the system can increase downlink symbols there while maintaining flexible uplink allocation in other subbands, achieving adaptive resource distribution that satisfies both capacity requirements and uplink transmission needs
Data Source
AI summary
The present invention relates to a wireless communication system and, more specifically, to a method wherein resource allocation information for downlink reception or uplink transmission is acquired, and if the downlink reception or uplink transmission is required on a sub-band slot/symbol, the downlink reception or uplink transmission is performed in consideration of sub-band operations, and a wireless device therefor.