User Equipment Resource Reselection via Broadcast Feedback
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Solution Overview
Problem
Current wireless communication systems face inefficiencies in resource selection and management, particularly in device-to-device (D2D) communication, where UEs lack effective methods to determine optimal resource usage based on feedback, leading to potential resource collisions and reduced network performance.
Innovation Solution
A method where a UE broadcasts a message, receives feedback on resource usage from other UEs, determines resource reselection based on the number of UEs using a resource, and transmits a second message using a reselected resource if the sum value of feedback indicates excessive usage, thereby optimizing resource allocation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If UEs use fixed resource allocation for broadcast messages, then resource management is simple, but resource collisions increase and network performance deteriorates
Solution Approach 1:
The patent implements a feedback mechanism where UEs report resource usage status (busy/idle) to transmitting UEs. This feedback enables dynamic resource reselection, allowing the system to adapt to changing channel conditions and avoid collisions while maintaining manageable complexity through standardized feedback formats and decision thresholds.
Solution Approach 2:
The patent transforms static resource allocation into a dynamic system where UEs can reselect resources based on real-time feedback from other UEs. The resource usage state information and reselection criteria enable the system to adapt continuously, improving reliability without requiring complex centralized control.
2Reliability
If UEs perform dynamic resource reselection based on feedback, then resource collision avoidance improves, but system complexity increases
Solution Approach 1:
The patent segments the resource selection process into distinct stages: feedback reception, state evaluation, and reselection decision. Each stage operates with defined inputs and outputs, reducing overall complexity. The feedback information is segmented into specific state values (busy/idle), and reselection decisions are based on clear thresholds, making the complex process manageable.
Solution Approach 2:
The patent uses parameter changes (resource usage state values, threshold comparisons) to simplify the decision-making process. By monitoring specific parameters like the number of UEs using a resource and comparing against predefined thresholds, the system achieves dynamic adaptability without requiring complex algorithms.
3Productivity
If UEs transmit feedback information, then resource allocation efficiency improves, but overhead increases
Solution Approach 1:
The patent extracts only the essential information needed for resource allocation decisions - specifically, whether a resource is busy or idle and the number of UEs using it. By taking out only this critical feedback data rather than transmitting complete channel state information, the system improves resource allocation efficiency while minimizing overhead.
Solution Approach 2:
The patent implements partial feedback action where UEs provide feedback based on their resource usage state rather than continuous detailed reporting. The feedback is triggered selectively based on resource reselection conditions, providing sufficient information for efficient allocation without excessive overhead from constant detailed reporting.
Data Source
AI summary
One embodiment of the present invention relates to a method for user equipment receiving broadcast feedback information transmitting a message in a wireless communication system, the method for user equipment receiving broadcast feedback information transmitting a message comprising the steps of: broadcasting a first message from a first resource; receiving, from a plurality of user equipment which have received the broadcast, information relating to resource use of the first resource; determining whether to perform resource reselection from resource use of the first resource received from the plurality of user equipment; and transmitting a second message using a reselected resource when the resource reselection is to be performed, wherein the information relating to resource use is a status value corresponding to the number of user equipment using the first resource.