Multi-RAT Terminal Resource Sharing for Collision Avoidance
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Solution Overview
Problem
Existing wireless communication systems face challenges in sharing resources between device-to-device direct communications that utilize different Radio Access Technologies (RATs), leading to difficulties in detecting and avoiding collisions between signals of different RATs.
Innovation Solution
A terminal equipped with communication units for multiple RATs, allowing for resource pool management and control using the latest information from another RAT to facilitate resource sharing and collision avoidance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If terminals use autonomous resource determination in sidelink of different RATs, then transmission flexibility is improved, but resource collision detection capability deteriorates
Solution Approach 1:
The patent introduces an intermediary mechanism where a terminal performing D2D communication in a first RAT utilizes resource pool information from a second RAT as a mediator to detect and avoid resource collisions. This allows the terminal to indirectly sense resources occupied by other terminals using different RATs, resolving the detection capability issue while maintaining autonomous resource determination flexibility.
2Reliability
If separate resource pools are used for different RATs, then resource collision is avoided, but resource sharing efficiency deteriorates
Solution Approach 1:
The patent merges resource pool information from different RATs by allowing a terminal to access and utilize resource pool configurations from a second RAT when performing D2D communication in a first RAT. This combining of resource information enables both collision avoidance and efficient resource sharing across different RATs, eliminating the need for completely separate resource pools.
Data Source
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AI summary
A terminal includes: a first communication unit configured to perform transmission and reception in a resource pool of a first RAT (Radio Access Technology) with respect to the resource pool of the first RAT and a resource pool of a second RAT; a second communication unit configured to perform transmission and reception in the resource pool of the second RAT; and a control unit configured to control communications in the resource pool of the first RAT. The control unit controls the communications in the resource pool of the first RAT by using a newest information item among information items in the second RAT obtained from the second communication unit.