D2D Resource Measurement and Adaptive Offloading in Wireless Systems
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently managing and adapting D2D resource usage based on load status, leading to suboptimal performance and resource utilization in D2D communication.
Innovation Solution
A method for a user equipment (UE) to measure and report resource usage rates, transmitting this information to a base station to receive resource reallocation information, which includes probability values for selecting between different communication links, allowing for adaptive offloading of D2D communication to optimize resource usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If D2D communication is performed on a single link, then the communication setup is simple, but the resource utilization is inefficient and the system cannot adapt to load status changes
Solution Approach 1:
The patent implements dynamic resource allocation by enabling UEs to switch between multiple D2D links based on real-time resource usage rates. The system transitions from a static single-link configuration to a dynamic multi-link setup where resource allocation probabilities are continuously adjusted according to measured load conditions, allowing the system to adapt to changing traffic patterns and resource availability
Solution Approach 2:
The patent changes the parameter of resource allocation by introducing probability values that determine the likelihood of selecting specific D2D links. Instead of fixed resource assignment, the system modifies allocation parameters dynamically based on measured resource usage rates, enabling flexible adaptation to load status while maintaining manageable complexity through structured probability-based decision-making
2Productivity
If resource allocation is fixed, then the system is simple to manage, but the resource usage efficiency decreases when load status changes
Solution Approach 1:
The patent implements a feedback mechanism where UEs measure the resource usage rate of their current D2D link and report this information to the base station. The base station uses this feedback to calculate and update resource allocation probabilities, creating a closed-loop system that continuously optimizes resource usage efficiency based on actual network conditions while maintaining manageable complexity through automated decision-making
Solution Approach 2:
The patent performs preliminary actions by pre-calculating resource allocation probabilities based on measured resource usage rates before actual D2D communication occurs. The base station prepares updated allocation probabilities in advance and notifies UEs before they need to switch links, enabling smooth transitions and optimizing resource usage efficiency without introducing operational complexity during active communication
Data Source
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AI summary
A method for measuring and reporting a D2D resource by a terminal that supports D2D communication according to an embodiment of the present invention comprises the steps of: measuring a resource usage rate of a first link that is being used by the terminal for D2D communication; transmitting a measurement report including the measured resource usage rate to a base station when the measured resource usage rate exceeds a first threshold value or less than a second threshold value; and receiving resource reallocation information for offloading the D2D communication, from the base station, wherein the resource reallocation information includes probability values indicating probabilities that the first link and the second link, which is configured in a resource different from that of the first link, will be used for the D2D communication, respectively. The terminal may offload the D2D communication performed in the first link onto the second link when the second link is selected through a link selection performed on the basis of the probability values.