D2D Multi-Path Topology Setup for Application-Aware Relay Links
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Solution Overview
Problem
Existing D2D communication systems face challenges in selecting eligible UEs for multi-point transmissions, setting up topologies that meet application-specific requirements, and ensuring reliable connections for out-of-coverage or poorly connected UEs in the 'last mile' without incurring high costs or scalability issues.
Innovation Solution
A method and network node for determining a multi-path connection topology that satisfies application-level requirements by selecting eligible UEs and configuring them as relays, using a master topology function to establish direct and multi-hop links, and performing feasibility checks and QoS predetermination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple UEs are used as nodes in multi-point transmission, then reliability is improved, but device complexity increases due to coordination and synchronization mechanisms
Solution Approach 1:
The patent introduces a Master Topology Function (MTF) as an intermediary entity that centrally manages and coordinates multi-point transmission topology. The MTF determines eligible UEs, establishes topology configurations, and manages relay selections, thereby reducing the coordination burden on individual UEs and simplifying the overall system complexity while maintaining high reliability through coordinated multi-node transmissions
Solution Approach 2:
The patent dynamically adjusts topology parameters such as transmission power, resource allocation, and relay selection based on application-level requirements and real-time channel conditions. By changing these parameters adaptively, the system optimizes reliability for different scenarios without requiring complex permanent architectural changes
2Reliability
If strict topology requirements are imposed on UEs for multi-point transmission, then reliability is improved, but the number of eligible UEs decreases
Solution Approach 1:
The patent implements dynamic topology adaptation where the MTF continuously evaluates UE eligibility based on current application requirements, channel conditions, and UE capabilities. UEs can transition between different roles (direct transmission, relay, multi-hop) dynamically, allowing the system to maintain strict reliability requirements while adapting to varying UE availability and conditions
3Reliability
If existing CoMP solutions using multiple base stations are deployed, then reliability is improved, but cost increases and scalability is reduced
Solution Approach 1:
The patent replaces expensive, fixed infrastructure (multiple base stations) with more economical, flexible alternatives (user equipment acting as transmission nodes). UEs can be dynamically selected and configured for multi-point transmission, providing comparable reliability at lower cost and with better scalability to cover areas beyond traditional base station ranges
Solution Approach 2:
The patent enables UEs to serve multiple functions: they can act as end devices, relays, or transmission nodes in multi-point configurations. This multi-functionality allows the same UE pool to serve various applications and coverage areas, reducing the need for dedicated infrastructure and improving cost-effectiveness and scalability
4Reliability
If application-level requirements are strictly enforced for topology determination, then reliability is improved, but system complexity increases
Solution Approach 1:
The Master Topology Function serves as a centralized intermediary that handles the complexity of application-level requirement interpretation and topology determination. Individual UEs simply follow MTF instructions, reducing their processing burden while ensuring that application-specific reliability requirements are properly enforced through centralized decision-making
Data Source
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AI summary
Systems and methods are disclosed herein for determining a topology for a multi-path connection based on one or more application-level requirements. In one embodiment, a method performed by a master topology function comprises receiving a request for a topology for a multi-path connection that satisfies an application-level requirement(s) of a particular application and determining a topology for the multi-path connection based on the application-level requirement(s). The topology comprises two or more links from a source wireless node to a target wireless communication device and at least one of the two or more links is a multi-hop link from the source wireless node to the target wireless communication device via one or more additional wireless communication devices that operate as relays. The method further comprises configuring the source wireless node, the target wireless communication device, and the one or more additional wireless communication devices in accordance with the determined topology.