Sidelink Relay UE Selection via Network Configured Thresholds
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Solution Overview
Problem
Existing technologies face challenges in efficiently establishing and managing sidelink relays for device-to-device communication in wireless networks, particularly in selecting suitable relay UE nodes and controlling their operational locations within the network.
Innovation Solution
The implementation of a relay selection procedure that involves determining predetermined conditions for a UE to operate as a relay, transmitting discovery messages, and monitoring for signals from other UEs, along with the use of multiple thresholds and beam direction to control the location of relay UEs relative to the currently camped cell.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If relay UEs are allowed to operate freely without location control, then relay availability and communication coverage are improved, but network interference and signal quality degradation worsen
Solution Approach 1:
The patent applies parameter changes by implementing multiple thresholds (first threshold and second threshold) that define acceptable ranges for relay operation parameters such as signal strength and location. The network configures these threshold parameters to control relay UE behavior, changing the operational parameters from unrestricted to constrained within acceptable ranges, thereby reducing interference while maintaining reliability.
Solution Approach 2:
The patent introduces an intermediary control mechanism where the network acts as a mediator between relay UEs and the overall network system. The network configures thresholds and controls relay UE operations based on network conditions, serving as an intermediary that balances individual relay availability with overall network performance and interference management.
2Object-affected harmful factors
If multiple thresholds are implemented to control relay UE location, then network interference is reduced, but device complexity and operational overhead increase
Solution Approach 1:
The patent applies preliminary action by having the network pre-configure multiple thresholds and relay selection criteria before relay operations begin. This preliminary configuration includes setting up the first threshold, second threshold, and other parameters in advance, so that relay UEs can operate autonomously within these pre-defined boundaries without real-time complex decision-making, reducing operational complexity.
3Reliability
If relay UEs are selected based on comprehensive criteria, then communication reliability is improved, but relay selection time and processing overhead increase
Solution Approach 1:
The patent applies preliminary action by pre-configuring multiple thresholds and relay selection criteria by the network before relay selection occurs. This includes setting up the first threshold, second threshold, and other operational parameters in advance, enabling relay UEs to perform autonomous selection based on these pre-established criteria without requiring complex real-time negotiations or extended processing during the actual relay selection moment.
Data Source
AI summary
A first user equipment (UE) is capable of serving as a relay for a second UE using a sidelink connection. The first UE determines that a predetermined condition is satisfied, the predetermined condition associated with the first UE operating as a relay for a second UE, transmits a discovery message and monitors for a signal from the second UE in response to the discovery message.