Partial-Sensing Sidelink Allocation for Resource Collision Avoidance
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Solution Overview
Problem
Existing 5G sidelink communication methods face challenges in efficient data transmission due to resource allocation collisions and lack of effective collision avoidance mechanisms, particularly in partial sensing scenarios.
Innovation Solution
The method involves configuring user equipment (UE) and base stations with partial sensing parameters for sidelink communications, using dedicated channels like PSBCH for resource allocation, and implementing discontinuous reception (DRX) with wake-up signals to optimize resource use and prevent collisions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If partial sensing is used for sidelink resource allocation, then resource allocation efficiency is improved, but resource collision risk increases
Solution Approach 1:
The patent applies preliminary action by performing sensing operations before resource selection to identify available resources. The UE monitors sidelink control information in advance, builds a sensing result, and uses this information to select resources that are less likely to cause collisions, thus resolving the contradiction between efficient partial sensing and collision avoidance.
Solution Approach 2:
The patent implements feedback mechanisms where the UE continuously monitors sidelink control information and updates its sensing results based on received signals. This feedback loop allows the UE to adapt its resource selection based on current channel conditions and other UEs' transmissions, reducing collision risk while maintaining allocation efficiency.
2Measurement precision
If continuous monitoring is performed for sidelink control information, then resource selection accuracy is improved, but power consumption increases
Solution Approach 1:
The patent applies partial action by implementing partial sensing where the UE monitors only a subset of available resources or performs sensing at reduced density compared to full continuous monitoring. This approach maintains sufficient resource selection accuracy while significantly reducing power consumption by avoiding exhaustive monitoring of all possible resources.
Solution Approach 2:
The patent implements periodic action through discontinuous reception (DRX) cycles where the UE alternates between monitoring and sleep states. The UE performs sensing operations periodically rather than continuously, which reduces power consumption while maintaining adequate resource selection accuracy by sampling the channel at appropriate intervals.
3Use of energy by moving object
If discontinuous reception (DRX) is configured for power saving, then power consumption is reduced, but resource allocation responsiveness decreases
Solution Approach 1:
The patent applies dynamics by making the DRX configuration adaptive rather than static. The UE can adjust its DRX cycle length and wake-up timing based on traffic conditions, channel state, and QoS requirements. This dynamic adjustment allows the system to switch between power-saving mode and responsive mode as needed, resolving the contradiction between power consumption and responsiveness.
Solution Approach 2:
The patent implements self-service through autonomous DRX configuration where the UE independently determines its own wake-up times and monitoring schedules based on its traffic patterns and channel conditions. This self-service approach allows the UE to optimize its own power consumption while maintaining adequate responsiveness without requiring constant network control.
Data Source
AI summary
A method of data transmission performed by a first user equipment (UE) includes receiving, by the first UE, one or more configuration parameters indicating a first set of time and frequency resources associated with partial sensing in sidelink communications; monitoring for sidelink control information (SCI) based on the partial sensing and in one or more resources determined based on the one or more configuration parameters; receiving, based on the monitoring, the SCI from a second UE; and receiving, based on the SCI, sidelink data from the second UE. The first set of time and frequency resources can include one or more time slots in a same frequency subband, and the first set of time and frequency resources may include one or more time slots in one or more frequency subbands.


