Sidelink Resource Reservation Limits for V2X Retransmissions
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Solution Overview
Problem
In 5G V2x Sidelink communication, there is a challenge in managing resource reservation to avoid mutual interference and resource wastage due to excessive or inappropriate reservation of time-frequency resources, particularly in scenarios where retransmissions occur, leading to inefficiencies and potential collisions.
Innovation Solution
A method is introduced to limit the quantity of time-frequency resources reserved by a terminal through a reservation resource limit, determining the resources needed for current and future transmissions, and sending sidelink control information to manage resource allocation effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If terminals reserve time-frequency resources for retransmissions without limitation, then transmission reliability is improved, but resource wastage increases and resource utilization deteriorates
Solution Approach 1:
The patent introduces a reservation resource limit parameter that dynamically constrains the maximum number of resources a terminal can reserve for retransmissions. This parameter change transforms the unbounded resource reservation behavior into a controlled process, balancing reliability requirements with resource efficiency by adjusting the reservation limit based on system conditions
2Reliability
If terminals reserve excessive time-frequency resources for future transmissions, then transmission reliability is improved, but resource utilization deteriorates due to resource wastage
Solution Approach 1:
The system modifies the resource reservation behavior by introducing a configurable limit parameter that caps the number of reservable resources. This parameter adjustment ensures that terminals reserve sufficient resources for reliable transmission while preventing excessive reservation that would harm overall system productivity and resource utilization efficiency
3Reliability
If terminals reserve more time-frequency resources for current and future transmissions, then transmission reliability is improved, but device complexity increases due to resource management overhead
Solution Approach 1:
The patent simplifies resource management complexity by introducing a clear parameter-based limit that terminals must adhere to when reserving resources. This parameter constraint provides a straightforward rule for resource allocation, reducing the complexity of resource management logic while still ensuring sufficient resources are available for reliable transmission
Data Source
AI summary
A resource reservation method, which belong to the field of communications technologies. Said method includes: acquiring a reservation resource limit, the reservation resource limit being used to limit a quantity of time-frequency resources reserved by a terminal; determining, on the basis of the reservation resource limit, time-frequency resources needing to be reserved for current transmission; and sending sidelink control information, the sidelink control information includes information of the time-frequency resources needing to be reserved.