TDD Full-Duplex Timing for Interference-Aware UE Communication
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Solution Overview
Problem
Existing wireless communication systems face challenges in accurately and efficiently transmitting and receiving signals due to the need for improved mobile broadband communication, especially in scenarios requiring enhanced mobile broadband, massive Machine Type Communication, and Ultra-Reliable and Low Latency Communication.
Innovation Solution
A method and device for user equipment (UE) in a wireless communication system that utilizes time division duplexing (TDD) configuration information and indication information to specify time durations for full-duplex operations with a base station (BS), considering boundaries of uplink and downlink time durations, and employs flexible time durations and non-overlapping or overlapping frequency bands for efficient communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If full-duplex operation is implemented in wireless communication systems, then communication capacity and efficiency are improved, but interference between uplink and downlink signals increases
Solution Approach 1:
The frequency band is divided into multiple sub-bands, with some sub-bands allocated for uplink transmission and others for downlink transmission simultaneously. This segmentation allows full-duplex operation to increase communication capacity while managing interference by spatially separating uplink and downlink frequencies in the spectrum.
Solution Approach 2:
Different sub-bands are assigned different transmission directions (uplink or downlink) within the same time period. By applying local quality differentiation across frequency sub-bands, the system enables full-duplex operation in specific frequency regions while maintaining half-duplex operation in others, thus balancing capacity enhancement with interference control.
2Object-generated harmful factors
If time division duplexing is used to allocate uplink and downlink time durations, then interference is reduced, but communication flexibility and adaptability decrease
Solution Approach 1:
The system dynamically switches between time-division duplexing mode (for interference reduction) and frequency-division full-duplex mode (for flexibility). The base station can adaptively select the operating mode based on current traffic conditions, service requirements, and interference levels, thereby maintaining both interference reduction and communication flexibility.
Solution Approach 2:
The system changes the operational parameters by switching between different duplexing modes and adjusting TDD uplink/downlink time duration ratios. This parameter flexibility allows the system to adapt to varying communication needs while maintaining acceptable interference levels through dynamic configuration.
3Productivity
If TDD configuration information is used to define downlink and uplink time durations, then time resource allocation is optimized, but accuracy in specifying full-duplex time duration decreases
Solution Approach 1:
The base station acts as an intermediary that receives TDD configuration information defining uplink and downlink time durations, then uses this information to accurately determine the full-duplex time duration. The base station calculates the full-duplex duration as the overlapping period between uplink and downlink time resources, thereby achieving precise timing without requiring separate configuration.
Solution Approach 2:
The system performs preliminary configuration of TDD time durations before full-duplex operation begins. By pre-defining the uplink and downlink time allocations, the system enables accurate determination of the full-duplex time window through simple overlap calculation, eliminating the need for complex real-time timing adjustments.
Data Source
AI summary
A terminal according to various embodiments may: receive TDD configuration information for configuring a downlink time duration and an uplink time duration within a time resource period; receive indication information specifying a first time duration associated with full duplex operation of a base station within the time resource period; and perform communication with the base station on the basis of the indication information and the TDD configuration information, wherein on the basis of the indication information indicating only one of a start symbol, a last symbol, and duration of the first time duration, the first time duration is specified by further considering the boundary of one time duration among the uplink time duration and the downlink time duration.