Sidelink Message Relay via Backhaul for Reliable UE Communication
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing wireless communication systems face challenges in ensuring reliable and efficient sidelink communications, particularly in scenarios where direct UE-to-UE connections are limited or unavailable, leading to inefficiencies and potential loss of critical messages.
Innovation Solution
The system leverages backhaul links to relay sidelink messages by having a serving network entity receive a distance-based message from a UE, select target network entities within a region of interest, and transmit the message to recipient UEs through these entities, utilizing access and backhaul links for inter-UE coordination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If direct UE-to-UE connections are used for sidelink communications, then communication efficiency is improved, but reliability deteriorates when direct connections are limited or unavailable
Solution Approach 1:
The patent introduces network entities (serving network entity and target network entities) as intermediaries to relay sidelink messages. When direct UE-to-UE connections are unavailable, the network entities facilitate message delivery through backhaul links, ensuring reliability while maintaining communication efficiency through coordinated relay operations.
2Reliability
If network entities relay sidelink messages through backhaul links, then reliability is improved, but device complexity increases
Solution Approach 1:
The network entities perform multiple functions: they serve as relay nodes for sidelink communications, manage backhaul links, and coordinate with both source and target UEs. This multi-functionality allows the system to achieve high reliability through network-assisted relaying without proportionally increasing overall system complexity.
3Reliability
If sidelink messages are relayed through multiple network entities, then message delivery reliability is improved, but latency increases
Solution Approach 1:
The serving network entity identifies and selects target network entities in advance based on the region of interest before message transmission. This preliminary coordination allows for optimized relay paths to be established beforehand, reducing latency when actual message relaying occurs while maintaining high reliability through pre-planned routes.
4Ease of operation
If access links are used for UE-to-network communication, then ease of operation is improved, but energy consumption increases
Solution Approach 1:
The patent uses network entities as intermediaries that can relay messages via backhaul links, allowing UEs to communicate more efficiently. This approach maintains ease of operation for UEs while reducing their direct energy consumption through optimized relay mechanisms managed by the network infrastructure.
Data Source
AI summary
Methods, systems, and devices for method for wireless communication are described. A serving network entity may receive, from a user equipment (UE) and via an access link, a distance-based sidelink message including an indication of a region of interest around the UE. In some examples, the distance-based sidelink message may be for relay of the distance-based sidelink message to one or more UEs within the region of interest. The serving network entity may select one or more target network entities that provide service to at least a portion of the region of interest around the UE. The serving network entity may then transmit, via a backhaul link, the distance-based sidelink message to the one or more target network entities for relay of the distance-based sidelink message to one or more UEs within the region of interest.