Terminal Uplink Scheduling for Uplink-Downlink Collision Resolution

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Solution Overview

Problem

The increasing demand for high-speed and low-latency wireless communication in 5G and beyond systems, particularly in terahertz bands, poses challenges in managing collisions between uplink and downlink channels, which affect the efficient transmission and reception of data.

Innovation Solution

A method and terminal configuration that identifies and resolves collisions between uplink and downlink channels by selectively avoiding transmission during overlapping time units, utilizing a controller to manage channel transmissions based on predefined conditions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If the terminal transmits uplink channels and receives downlink channels simultaneously in overlapping time units, then the transmission rate and system capacity are improved, but channel collisions occur causing interference and reducing reliability

Engineering Contradiction:

Improvetransmission rateVSAvoidchannel collision interference

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The terminal performs preliminary identification of channel collisions between uplink and downlink channels before transmission occurs. By detecting overlapping time units in advance and determining collision status, the system can prepare appropriate resolution actions (such as dropping or prioritizing specific channels) to prevent interference, thus maintaining reliability while enabling high-speed transmission in non-collision scenarios

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The terminal dynamically adjusts its channel transmission strategy based on real-time collision detection results. When collisions are identified in overlapping time units, the system flexibly changes behavior by selectively dropping uplink channels or adjusting transmission priorities according to predefined conditions, allowing the system to adapt between high-throughput mode (no collision) and interference-avoidance mode (collision detected)

Inventive Principle:

Principle #15Dynamics

2Reliability

If the terminal avoids transmission during overlapping time units to prevent channel collisions, then channel interference is reduced improving reliability, but transmission opportunities are lost reducing productivity

Engineering Contradiction:

Improvechannel collision avoidanceVSAvoidtransmission efficiency

Core Design Contradiction:

ReliabilityVSProductivity

Solution Approach 1:

Instead of avoiding all transmissions during overlapping time units, the terminal applies local quality differentiation by selectively dropping only the necessary channels (either uplink or downlink) based on collision identification results and predefined conditions. This allows non-colliding channels to continue transmitting at full efficiency while only the colliding channels are adjusted, thus maintaining high overall transmission efficiency while preventing interference

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The terminal changes transmission parameters dynamically based on collision detection. By monitoring overlapping time units and adjusting transmission status (transmit/drop) according to collision conditions, the system optimizes the balance between reliability (avoiding collisions) and productivity (maintaining transmission opportunities) through parameter adaptation rather than blanket avoidance

Inventive Principle:

Principle #35Parameter changes

3Productivity

If the terminal manages multiple uplink and downlink channels with complex collision resolution, then channel utilization is improved, but device complexity increases

Engineering Contradiction:

Improvechannel utilizationVSAvoidcollision management complexity

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The terminal performs self-service in collision management by autonomously identifying collisions between its own uplink and downlink channels and resolving them according to predefined conditions without requiring complex external coordination. The device independently monitors its channel assignments, detects overlapping time units, and applies resolution rules (such as dropping specific channels), simplifying the overall system while maintaining high channel utilization

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The collision management process is segmented into distinct functional steps: identifying overlapping time units, determining collision status between specific channel pairs, evaluating predefined conditions, and executing resolution actions. This segmentation breaks down the complex task of managing multiple channels into manageable discrete operations, reducing device complexity while improving channel utilization through systematic handling

Inventive Principle:

Principle #1Segmentation

Data Source

PatentUS12563601B2Terminal and communication method thereof in wireless communication system

Publication Date: 2026.02.24 SAMSUNG ELECTRONICS CO LTD

AI summary

Disclosed is a method performed by a terminal in a wireless communication system that includes identifying that a first uplink channel collides with a second uplink channel and a first downlink channel, resolving a collision between the first uplink channel and the first downlink channel by not transmitting a time unit of the first uplink channel that collides with the first downlink channel in case that a first predefined condition is satisfied, resolving a collision between the first uplink channel and the second uplink channel, and performing a downlink reception or an uplink transmission based on at least one of the first uplink channel, the second uplink channel or the first downlink channel.