Resource Exclusion for Device-to-Device Communication
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Solution Overview
Problem
Current device-to-device communication technologies face challenges in efficiently selecting and preparing resources for transmission, particularly in unlicensed spectrum, due to the need for timely exclusion of occupied resources and processing constraints, which can lead to excessive time consumption and interference.
Innovation Solution
A method where a user equipment (UE) determines in a first time slot whether a selected subset of candidate resources is still available for transmission in a subsequent time slot, allowing for proactive preparation and selective transmission based on availability, enabling satisfaction of processing timeline constraints and reducing interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If device-to-device communication uses unlicensed spectrum with traditional resource selection methods, then interference occurs and time consumption increases, but changing to proactive resource preparation and exclusion methods increases device complexity and processing requirements
Solution Approach 1:
The patent applies preliminary action by having the UE proactively prepare for transmission in a first time slot by determining resource availability and excluding occupied resources before the actual transmission time. This allows the UE to identify and reserve suitable candidate resources in advance (slot n-2), perform necessary processing, and be ready for transmission by the target time (slot n), thereby reducing time consumption and interference in unlicensed spectrum while managing device complexity through structured advance preparation.
2Object-affected harmful factors
If device-to-device communication allows flexible resource selection, then interference is reduced, but processing time requirements increase
Solution Approach 1:
The patent resolves this contradiction by performing preliminary resource selection and exclusion actions in advance time slots. The UE identifies and excludes occupied resources proactively before the transmission deadline, allowing flexible resource selection to reduce interference while the advance preparation ensures processing time constraints are met by completing resource determination before the final transmission slot.
3Productivity
If device-to-device communication uses advance resource preparation, then transmission efficiency improves, but device complexity increases due to additional processing steps
Solution Approach 1:
The patent applies segmentation by dividing the resource preparation process into distinct time slot stages: resource identification in slot n-2, availability determination and exclusion in slot n-1, and final transmission in slot n. This structured segmentation improves transmission efficiency through systematic advance preparation while managing device complexity by organizing processing steps into clear temporal phases with defined boundaries and objectives.
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may select, in a first time slot, a set of resources to use for transmission to another UE; evaluate, in a second time slot, whether one or more resources of the set of resources is available; and transmit, based on the one or more resources of the set of resources being available, information to the other UE in a third time slot and using the set of resources, or reselect, based on the one or more resources of the set of resources being unavailable, another resource for transmission of the information to the other UE. Numerous other aspects are provided.