Subband Direction Configuration for Full-Duplex Time Slots
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Solution Overview
Problem
Existing communication protocols limit terminal devices to either downlink or uplink transmission in specific slots, restricting the development of full duplex communication.
Innovation Solution
Configuring subbands with different transmission directions within specified time units, allowing terminals to perform both downlink and uplink operations simultaneously by defining frequency domain resource ranges for subbands using explicit signaling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If existing communication protocols are used to limit terminal devices to either downlink or uplink transmission in specific slots, then transmission direction control is simplified, but full duplex communication development is restricted
Solution Approach 1:
The patent divides the frequency domain into multiple subbands, where each subband can be independently configured with different transmission directions (uplink, downlink, or flexible). This segmentation allows terminal devices to perform both downlink and uplink operations simultaneously in different subbands within the same time unit, enabling full duplex communication while maintaining controlled complexity through structured frequency division
Solution Approach 2:
The patent introduces a new dimension for transmission direction control by assigning different transmission directions to different frequency subbands rather than restricting all transmissions in a time slot to a single direction. This dimensional approach (frequency-based direction assignment) enables full duplex communication without significantly increasing time-domain control complexity
2Productivity
If subbands with different transmission directions are configured within specified time units, then full duplex communication feasibility is enhanced, but frequency domain resource management complexity increases
Solution Approach 1:
The patent introduces flexible subbands that can dynamically switch between uplink and downlink transmission directions based on communication needs. The base station configures certain subbands as flexible, allowing them to adapt their transmission direction according to traffic conditions, thereby enhancing communication efficiency while providing a structured framework for frequency domain resource management
Solution Approach 2:
The patent changes the transmission direction parameter of specific subbands from fixed to configurable states. By allowing the base station to dynamically assign transmission directions (uplink, downlink, or flexible) to different subbands, the system optimizes frequency domain resource utilization and enhances communication efficiency without requiring complete reconfiguration of the entire frequency spectrum
3Loss of time
If terminals are restricted to single transmission direction per time slot, then interference management is simplified, but communication delay increases
Solution Approach 1:
By segmenting the frequency domain into multiple subbands with different transmission directions, the patent enables simultaneous uplink and downlink transmissions in the same time unit. This reduces communication delay by eliminating the need for sequential transmission while managing interference through frequency separation and targeted resource allocation in specific subbands
Data Source
AI summary
A method for configuring a subband includes: sending subband configuration information, in which the subband configuration information is configured to configure a frequency domain resource range occupied by a first subband for a terminal, the first subband is located in a specified time unit in a time domain, and a transmission direction of information in the first subband is different from a transmission direction of information in the specified time unit.