Resource Reuse Apparatus Conflict Backoff Mechanism
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Solution Overview
Problem
In Device to Device (D2D) communication mode, the probability of resource conflicts is high, leading to significant delays for user equipment (UE) in obtaining available resources, especially when there are many UEs and fewer idle resources.
Innovation Solution
The UE monitors idle resources and selects an alternative resource if it conflicts with another UE's claimed resource, either by choosing a different resource from the idle set or reclaiming after a cycle, to reduce conflict probability and delay.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple UEs claim resources in a predefined cycle without conflict detection, then resource acquisition speed is improved, but resource conflict probability increases
Solution Approach 1:
The patent implements a feedback mechanism where UEs detect resources claimed by other UEs and adjust their claiming behavior accordingly. When a UE detects that its claimed resource conflicts with another UE's claimed resource, it receives feedback information and performs backoff by selecting an alternative resource in subsequent cycles, thereby reducing conflict probability while maintaining acquisition speed
Solution Approach 2:
The patent introduces dynamic resource claiming behavior where UEs adapt their resource selection based on detected conflicts. Instead of static random selection, UEs dynamically adjust their claiming strategy by implementing backoff mechanisms and selecting alternative resources from the idle resource set when conflicts are detected, optimizing both acquisition speed and conflict avoidance
2Adaptability or versatility
If UEs perform repeated resource claiming to resolve conflicts, then resource utilization is improved, but delay in obtaining resource increases
Solution Approach 1:
The patent applies preliminary action by having UEs detect and identify conflicting resources before finalizing their claims. By performing preliminary detection of other UEs' claimed resources and selecting alternative resources in advance from the idle resource set, UEs avoid the need for repeated claiming cycles, thereby reducing delay while maintaining high resource utilization
Solution Approach 2:
The patent implements skipping by allowing UEs to bypass conflicting resources and directly select alternative resources from the idle resource set. When a conflict is detected, the UE skips the current conflicting resource and rushes to claim an alternative resource in the same or next cycle, reducing the number of iterations needed and minimizing time loss
Data Source
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AI summary
The present invention discloses a resource reuse apparatus, user equipment, and a resource reuse method, and pertains to the field of communications technologies. The method includes: monitoring, by first user equipment, idle resources so as to obtain a first idle resource set; claiming, in a first cycle, to use a first resource, where the first resource is a resource in the first idle resource set; determining whether the first resource exists in a first claimed resource set, where the first claimed resource set is a set of resources that are claimed to be used by another user equipment except the first user equipment; and if the first resource exists in the first claimed resource set, claiming, in a second cycle, to use a second resource, where the second resource is a resource, in the first idle resource set, that is different from the first resource; or reclaiming a resource after at least one cycle following the first cycle. In the present invention, a probability of a conflict that occurs when user equipment obtains a resource is reduced by determining whether a resource that is claimed by the user equipment is claimed by another user equipment.