Transmission Direction Signaling for Flexible Duplex Terminals
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In a network system with flexible/full duplex capabilities, terminals without full duplex capability struggle to determine transmission directions due to differing frequency resource requirements, leading to interference and inefficient processing.
Innovation Solution
A method and apparatus for determining transmission directions using first indication signaling, allowing terminals to identify uplink, downlink, or flexible transmission directions based on high-layer, RRC, or dynamic signaling, enabling terminals to determine transmission directions in flexible/full duplex systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If frequency resources are allocated differently for uplink and downlink to accommodate terminals without full duplex capability, then transmission direction can be determined, but signaling complexity increases
Solution Approach 1:
The patent segments the flexible transmission direction into multiple sub-directions (first flexible direction for receiving, second flexible direction for sending). This segmentation allows terminals to determine specific transmission directions based on different frequency resource configurations, resolving the contradiction by providing detailed direction information without requiring complex overall signaling structure.
Solution Approach 2:
The patent applies preliminary action by pre-configuring flexible transmission directions through high-layer signaling before actual data transmission. The network device pre-sets the first and second flexible directions, so terminals can directly use these pre-determined directions during data transmission without real-time complex signaling exchanges.
2Ease of manufacture
If flexible transmission directions are pre-configured through high-layer signaling, then terminal implementation is simplified, but system flexibility decreases
Solution Approach 1:
The patent combines static pre-configuration with dynamic selection. High-layer signaling pre-configures multiple flexible directions (first and second flexible directions), while the terminal dynamically selects the appropriate direction based on the actual frequency resource allocation. This dynamic approach maintains ease of implementation while achieving system flexibility.
Solution Approach 2:
The patent changes the parameter of transmission direction based on frequency resource configuration. When the frequency resource for sending is lower than the frequency resource for receiving, the terminal uses the first flexible direction; when the frequency resource for sending is higher, it uses the second flexible direction. This parameter change mechanism enables both simplified implementation and system adaptability.
3Adaptability or versatility
If multiple flexible transmission directions are supported, then system adaptability improves, but terminal processing complexity increases
Solution Approach 1:
The patent uses parameter changes (frequency resource comparison) to simplify terminal processing. The terminal only needs to compare the frequency resources for sending and receiving to determine which flexible direction to use. This simple comparison mechanism reduces processing complexity while supporting multiple transmission directions for system adaptability.
Data Source
AI summary
A transmission direction determining method and apparatus, a terminal, and a network side device, which belong to the field of communication technologies. According to embodiments of this application, the transmission direction determining method includes: The terminal determines a transmission direction corresponding to a time unit based on first indication signaling. The transmission direction includes an uplink transmission direction, a downlink transmission direction, or a flexible transmission direction. The flexible transmission direction is capable of being indicated as at least one of the following: an uplink transmission direction; a downlink transmission direction; and a flexible direction not for receiving and sending.