Relay Node QoS Query for Selective UE Handover
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Solution Overview
Problem
Existing methods for handover of User Equipment (UE) from a base station to a relay node in telecommunication networks are inefficient, as they often result in unnecessary handovers of UE with acceptable Quality of Service (QoS), leading to potential QoS degradation for those with already satisfactory service, and can cause congestion in relay node data planes due to unawareness of UE QoS before handover.
Innovation Solution
A method where a relay node requests a Quality-of-Service (QoS) query to determine if a UE's QoS parameter is below a threshold, allowing only UEs with substandard QoS to be handed over, thereby avoiding unnecessary handovers and optimizing relay node deployment by identifying and focusing on regions with multiple UEs with low QoS for targeted relay node activation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If all UEs in relay node coverage area are handed over to improve coverage, then coverage area is improved, but unnecessary handovers cause QoS degradation and network congestion
Solution Approach 1:
The patent applies local quality by differentiating treatment based on individual UE QoS status. Instead of uniformly handing over all UEs in the relay node coverage area, the system selectively hands over only those UEs with QoS parameters below predefined thresholds. This localized differentiation ensures that relay nodes provide enhanced service only where needed, while UEs with acceptable QoS remain served by the base station, thereby avoiding unnecessary handovers and preventing QoS degradation.
Solution Approach 2:
The patent implements preliminary action by querying the QoS status of UEs before executing handover. The relay node sends QoS query requests to the base station or network controller to obtain current QoS parameters of candidate UEs prior to handover decision. This preliminary QoS assessment allows the system to make informed handover decisions, ensuring that only UEs with substandard QoS are handed over, thus preventing unnecessary handovers and maintaining network stability.
2Speed
If relay nodes activate without QoS awareness to quickly deploy service, then deployment speed is improved, but data plane congestion occurs due to unawareness of UE QoS
Solution Approach 1:
The patent applies preliminary action by performing QoS status queries before handover execution. The relay node sends QoS query requests to obtain UE QoS parameters in advance, enabling informed handover decisions that prevent data plane congestion. This preliminary assessment ensures that only UEs with substandard QoS are handed over to relay nodes, optimizing resource allocation and preventing unnecessary load on relay node data planes.
Solution Approach 2:
The patent implements feedback mechanisms where the relay node receives QoS status information from the base station or network controller before making handover decisions. This feedback loop allows the relay node to be aware of current UE QoS conditions and adjust handover decisions accordingly, preventing data plane congestion by avoiding handovers of UEs with acceptable QoS while maintaining rapid deployment capability.
3Device complexity
If handover decisions are made without QoS query to simplify procedure, then procedure complexity is reduced, but resource allocation becomes inefficient
Solution Approach 1:
The patent applies preliminary action by implementing QoS status queries as a prerequisite step before handover execution. This preliminary QoS assessment adds minimal procedural complexity while significantly improving resource allocation efficiency. The relay node queries QoS status in advance, enabling data-driven handover decisions that optimize resource utilization by directing only UEs with substandard QoS to relay nodes, thereby avoiding waste of relay node resources on UEs with acceptable service.
Solution Approach 2:
The patent implements self-service by enabling relay nodes to autonomously make handover decisions based on QoS query results. The relay node receives QoS status information and independently determines which UEs should be handed over without requiring continuous manual intervention. This autonomous decision-making based on objective QoS metrics improves resource allocation efficiency while keeping the control procedure relatively simple and scalable.
Data Source
AI summary
A method of facilitating the handover of a User Equipment, UE, in a telecommunication network from a base station to a relay node, which relay node is arranged to relay traffic between serving UE and said base station, wherein said method comprises the steps of receiving, by said relay node, from said base station a request for handing over a UE connected to said base station, determining, by said relay node, that a Quality-of-Service, QoS parameter of said UE is below a QoS threshold, transmitting, by said relay node, to said base station, based on said determining, a handover acknowledgement message thereby facilitating the handover of said CE from said base station to said relay node.