Pre-allocated Uplink Resource Management During Wireless Handover
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In wireless communication systems, pre-allocated uplink resources during handover procedures are not efficiently utilized, leading to unnecessary resource consumption and inefficient data transmission, as current technologies do not define behavior for resources after handover completion or failure, resulting in potential misuse of grants.
Innovation Solution
A method and apparatus for wireless communication that allows user equipment (UE) to receive pre-allocated uplink resources during handover, determine specific time instances for transmission, and either refrain from transmitting or retransmit data based on the indication, optimizing the use of resources by skipping unused grants and ceasing transmissions upon successful acknowledgement or data availability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If pre-allocated uplink resources are provided during handover without defined behavior for post-handover usage, then handover transmission can proceed without random access procedure, but resource waste occurs due to unnecessary transmissions after handover completion
Solution Approach 1:
The UE monitors for handover confirmation messages from the target base station and uses this feedback to determine whether to continue or stop transmissions on pre-allocated resources. When handover completion is confirmed, the UE stops further transmissions, preventing resource waste while maintaining efficient handover execution.
Solution Approach 2:
The transmission behavior on pre-allocated resources is made dynamic rather than static. The UE adapts its transmission decisions based on real-time handover status, transitioning from active transmission during handover to inactive state after handover completion, thereby optimizing resource utilization throughout the process.
2Reliability
If pre-allocated resources are continuously used until handover completion is confirmed, then reliable handover execution is ensured, but transmission delays occur due to unnecessary retransmissions
Solution Approach 1:
The system uses feedback from the base station regarding handover status to dynamically control transmission behavior. This feedback mechanism ensures that transmissions continue reliably during handover while stopping promptly after completion, eliminating unnecessary delays caused by continued transmissions.
Solution Approach 2:
The UE performs transmissions on pre-allocated resources for the duration needed to ensure reliable handover execution, but stops exactly when handover completion is confirmed. This partial action approach avoids excessive transmissions that would cause delays while maintaining sufficient reliability during the critical handover period.
3Ease of operation
If pre-allocated uplink resources are utilized without defined behavior for resource cessation, then initial handover messages can be transmitted, but resource management efficiency deteriorates due to lack of coordination
Solution Approach 1:
The defined behavior incorporates feedback mechanisms where the UE monitors handover confirmation status and adjusts resource usage accordingly. This feedback-driven approach simplifies resource management by providing clear, automatic rules for when to start and stop transmissions, reducing the complexity of coordinating resource usage during handover.
Solution Approach 2:
The system changes the operational parameters of pre-allocated resources based on handover status. When handover is initiated, resources are activated for transmission; when handover completion is confirmed, resources are deactivated. This parameter change approach provides simple, rule-based resource management that maintains ease of operation while improving efficiency.
Data Source
AI summary
Aspects described herein relate to determining how to use pre-allocated uplink resources indicated as part of a handover procedure.