Terminal-Controlled Cross-RAT Sidelink Resource Selection
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Solution Overview
Problem
Existing sidelink communication systems using different Radio Access Technologies (RATs) face challenges in sharing resources due to the inability to detect each other's signals and avoid collisions.
Innovation Solution
A terminal equipped with a communication unit and control unit that can receive resource reservation information from another terminal, allowing it to determine and select resources in the physical layer or Medium Access Control (MAC) layer for transmission, facilitating resource sharing between different RATs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If terminals using different RATs autonomously determine resources independently, then each RAT can operate with its own resource allocation mechanism, but resource sharing between different RATs becomes difficult and collisions cannot be avoided
Solution Approach 1:
The patent introduces a base station as an intermediary that coordinates resource allocation between terminals using different RATs. The base station receives resource reservation information from one RAT, determines available resources, and allocates them to terminals of another RAT, preventing collisions while enabling resource sharing.
Solution Approach 2:
The patent implements feedback mechanisms where terminals report resource reservation information to the base station, which then uses this feedback to make informed resource allocation decisions for other RATs, ensuring collision-free resource sharing.
2Reliability
If resource pools for different RATs are completely separated, then collisions between RATs are avoided, but resource utilization efficiency decreases
Solution Approach 1:
The patent merges resource pools of different RATs under unified base station control, allowing resources to be dynamically shared between RATs based on demand, thereby improving overall resource utilization while maintaining collision avoidance through coordinated allocation.
Solution Approach 2:
The patent enables dynamic resource allocation where the base station continuously adjusts resource distribution between different RATs based on real-time traffic conditions and resource reservation information, optimizing resource utilization while preventing collisions.
3Productivity
If terminals of different RATs use the same time-frequency resources, then resource sharing is enabled, but signal detection and collision avoidance become impossible without coordination
Solution Approach 1:
The base station acts as an intermediary that collects resource reservation information from terminals of one RAT, processes this information to determine available resources, and allocates these resources to terminals of another RAT, enabling safe resource sharing without direct signal detection between different RAT terminals.
Solution Approach 2:
The base station performs preliminary resource determination by analyzing resource reservation information before allocating resources to terminals, ensuring that collision-free resources are identified and reserved in advance for different RATs.
Data Source
AI summary
A terminal includes a communication unit configured to perform transmission and reception of a first Radio Access Technology (RAT), and a control unit configured to control communication of the first RAT, wherein the communication unit receives information related to resource reservation of a second RAT from an other terminal, the control unit performs at least one of an operation of determining a resource set of the first RAT available in a physical layer and an operation of selecting a resource from the resource set in a Medium Access Control (MAC) layer, based on the information related to the resource reservation, and the communication unit performs a transmission to the other terminal using the selected resource.