Dynamic Subframe Allocation in Wireless Communication Systems
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Solution Overview
Problem
Current wireless communication systems, such as 3GPP LTE, face challenges in efficiently managing dynamic changes in wireless resources, leading to suboptimal signal transmission and reception due to fixed radio resource configurations.
Innovation Solution
A method for user equipment (UE) to dynamically determine the use of subframes as either uplink or downlink based on acquired grants, allowing for flexible allocation of radio resources by receiving pattern information from the base station, enabling efficient transmission and reception of signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If fixed radio resource configuration is used, then system structure is simple and easy to manage, but resource utilization efficiency deteriorates under dynamic traffic conditions
Solution Approach 1:
The patent applies dynamics by making the subframe configuration changeable from fixed to dynamic. Specifically, subframes that are initially configured as uplink or downlink can be dynamically switched based on traffic conditions through receiving a subframe configuration message from the base station, allowing the system to adapt resource allocation to actual needs while maintaining manageable complexity through standardized procedures.
Solution Approach 2:
The patent changes the parameter of subframe direction (uplink/downlink configuration) dynamically. By receiving configuration messages that indicate whether specific subframes should be used for uplink or downlink, the system adjusts these parameters in real-time based on traffic demands, thereby improving resource utilization without requiring complete system redesign.
2Adaptability or versatility
If dynamic subframe allocation is implemented, then resource flexibility improves, but signal transmission reliability deteriorates due to potential conflicts between uplink and downlink transmissions
Solution Approach 1:
The patent applies preliminary action by having the base station pre-configure dynamic subframe patterns and notify user equipment in advance through RRC signaling or system information blocks. This allows user equipment to prepare for upcoming dynamic subframe changes and avoid transmission conflicts by knowing the future resource allocation pattern before it takes effect.
Solution Approach 2:
The patent implements feedback mechanisms where the base station monitors traffic conditions and sends subframe configuration messages to user equipment based on actual network state. This closed-loop feedback ensures that dynamic subframe allocation responds to real-time conditions while maintaining coordination between base station and user equipment, preventing transmission conflicts and preserving reliability.
Data Source
AI summary
The present application relates to a method for enabling a terminal to transmit or receive a signal to or from a base station in a wireless communication system. Specifically, the method comprises the steps of: acquiring at least one amongst a downlink grant and an uplink grant in a specific sub-frame; determining the use of a dynamic sub-frame which is changeable for the dynamic use on the basis of the acquired grant information as one amongst an uplink transmission or a downlink reception; and transmitting or receiving the signal to or from the base station according to the determined use.