Uplink Subframe Reconfiguration for HARQ Process Adaptation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current wireless communication systems face challenges in efficiently transmitting uplink data information due to dynamic changes in radio resources, which can disrupt the maintenance of existing HARQ processes, leading to increased time delays and inefficiencies.
Innovation Solution
The method involves dynamically changing the use of radio resources by reconfiguring uplink subframes based on indication information received from the base station, allowing for the transition between different HARQ processes to maintain efficient data transmission, even when radio resources are dynamically altered.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If uplink subframes are dynamically reconfigured based on traffic demand, then system adaptability and resource utilization improve, but HARQ process maintenance becomes difficult and time delays increase
Solution Approach 1:
The patent applies preliminary action by pre-configuring multiple HARQ processes (first HARQ process and second HARQ process) before dynamic reconfiguration occurs. When an uplink subframe is changed from uplink to downlink, the system has already prepared alternative HARQ processes that can be immediately activated without waiting for new configuration, thus reducing time delay while maintaining adaptability.
Solution Approach 2:
The patent implements dynamics by enabling the system to dynamically switch between different HARQ processes based on real-time subframe reconfiguration. The HARQ process indicator in the grant message allows the system to adaptively select which HARQ process to use, maintaining flexibility in resource allocation while ensuring continuous uplink data transmission even when subframes are dynamically changed.
2Productivity
If uplink subframes are changed to downlink subframes to meet traffic demand, then resource utilization improves, but existing HARQ processes are disrupted
Solution Approach 1:
The patent applies parameter changes by modifying the HARQ process indicator parameter in the grant message to indicate which HARQ process should be used. When a subframe is reconfigured from uplink to downlink, the system changes the HARQ process indicator to switch to a different HARQ process, allowing continuous operation without disrupting the overall HARQ mechanism while improving resource utilization.
3Productivity
If multiple HARQ processes are configured for different uplink subframes, then transmission efficiency improves, but system complexity increases
Solution Approach 1:
The patent applies universality by designing a unified grant message structure that can indicate multiple HARQ processes using a single HARQ process indicator field. This multi-functional approach allows the same signaling mechanism to handle different HARQ processes, maintaining transmission efficiency while avoiding the need for separate complex signaling structures for each HARQ process.
Data Source
AI summary
The present invention relates to a method for transmitting uplink data information in a wireless communication system, and an apparatus therefor. Specifically, the method for a terminal for transmitting uplink data information by means of a hybrid automatic repeat request (HARQ) comprises the steps of: configuring at least one uplink subframe on the basis of first HARQ process; changing a particular uplink subframe, from among the uplink subframes, to a downlink subframe; receiving, from a base station, an indication information indicating the change from the first HARQ process to a second HARQ process; reconfiguring, in accordance with the indication information, at least one uplink subframe on the basis of the second HARQ process; and transmitting uplink data information by means of the reconfigured uplink subframe.