Sidelink Relay Selection Using Measurement Thresholds
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Solution Overview
Problem
Current technologies face challenges in efficiently establishing and managing sidelink relays between user equipment (UEs) for device-to-device communication, particularly in selecting suitable relay UEs based on measurement data and ensuring optimal communication link quality and location control within cellular networks.
Innovation Solution
The method involves determining available relay UEs based on measurement data, selecting an appropriate UE, and transmitting signals to establish a sidelink relay, using mechanisms such as threshold-based location control and beam direction management to optimize relay operation within the network.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the remote UE scans for available relay UEs and selects one based on measurement data, then the reliability of communication link is improved, but the time required for relay establishment increases
Solution Approach 1:
The network pre-configures the remote UE with selection criteria and measurement thresholds for identifying suitable relay UEs. This preliminary configuration enables the remote UE to quickly evaluate potential relays without extensive scanning, reducing establishment time while maintaining reliable connection selection through pre-established selection criteria.
2Reliability
If multiple second UEs are evaluated based on measurement data to select the optimal relay, then the communication quality is improved, but the complexity of the selection process increases
Solution Approach 1:
The patent transforms the complex multi-UE evaluation process into a simplified parameter-based selection mechanism. The network configures specific measurement parameters and thresholds that the remote UE uses to automatically evaluate and select relay UEs. This parameter-driven approach maintains communication quality by considering multiple UEs while reducing selection process complexity through standardized evaluation criteria.
3Object-affected harmful factors
If the relay UE is controlled to operate within specific location thresholds relative to the cell, then the network interference is reduced, but the flexibility of relay deployment is limited
Solution Approach 1:
The patent implements dynamic location threshold configuration where the network can adjust the geographic boundaries within which relay UEs are permitted to operate. These thresholds are not fixed but can be modified based on network conditions, cell load, and interference patterns. This dynamic approach reduces network interference by controlling relay locations while maintaining deployment flexibility through adaptive threshold adjustment.
Data Source
AI summary
A first user equipment (UE) selects a second UE to act as a relay for the first UE. The first UE determines that multiple second UEs are available to operate as a relay for the first UE, wherein the determining is based on measurement data corresponding to communication interfaces between the first UE and each of the second UEs. The first UE selects a second UE from the multiple second UEs and transmits a signal to the second UE.