V2X User Equipment Sensing Interval Adaptation
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Solution Overview
Problem
In V2X communications, existing solutions for resource management in V2P (Vehicle-to-Pedestrian) scenarios lead to increased energy consumption due to prolonged resource reservation periods, which can result in higher battery drain and reduced operational availability of pedestrian UEs.
Innovation Solution
Implementing a method where user equipment (UE) acquires information about allowed time intervals for resource reservation and sensing, allowing for more efficient energy usage by restricting sensing to selected resources and determined time intervals, and assigning different resource pools based on reservation periods to optimize energy efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If resource reservation periods are prolonged to ensure reliable resource allocation in V2P scenarios, then resource allocation reliability is improved, but energy consumption increases
Solution Approach 1:
The patent applies dynamics by making the sensing time interval adaptive rather than fixed. The UE determines the sensing time interval based on the resource reservation period, creating a dynamic relationship where sensing frequency adjusts to resource allocation requirements. This resolves the contradiction by allowing reliable resource allocation through longer reservation periods while reducing energy consumption by proportionally adjusting sensing intervals.
Solution Approach 2:
The patent changes the parameter relationship between sensing time interval and resource reservation period. By establishing that the sensing time interval is determined based on the resource reservation period, the system optimizes energy consumption while maintaining allocation reliability. This parameter adjustment allows the system to operate efficiently across different resource reservation scenarios.
2Measurement precision
If sensing is performed continuously on all resources to ensure accurate channel awareness, then measurement precision is improved, but energy consumption increases
Solution Approach 1:
The patent applies partial action by performing sensing only on selected resources rather than all available resources. The UE determines a sensing time interval based on the resource reservation period and performs sensing operations selectively during this interval. This approach maintains sufficient channel awareness accuracy for making informed resource selection decisions while significantly reducing energy consumption compared to continuous sensing of all resources.
3Productivity
If resource pools are configured with short reservation periods to improve resource utilization efficiency, then productivity is improved, but device complexity increases
Solution Approach 1:
The patent applies preliminary action by having the network configure multiple resource pools with different allowed time intervals in advance. The UE acquires information about these pre-configured pools and their characteristics before needing to make resource selections. This preliminary configuration simplifies the UE's decision-making process, as it can directly select from pre-defined pools based on its resource utilization needs, thereby improving productivity without significantly increasing device complexity.
Data Source
AI summary
A method by a user equipment, UE, that includes acquiring information about an allowed time interval at which resources in a pool of resources can be reserved for future transmission by the UE, and sensing using the resources in the pool and at a first time interval determined based on the allowed time interval for the pool. UEs that perform operations corresponding to the method are disclosed.