Relay Access Node Dual Connectivity Signal Routing
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Solution Overview
Problem
Current wireless networks with access nodes and relay access nodes face limitations in utilizing dual connectivity, particularly in maintaining effective signal conditions for efficient data transmission, leading to increased handovers and retransmissions due to poor signal conditions.
Innovation Solution
The system and method involve a relay access node and a donor access node configured to communicate with a wireless device via dual connectivity, where the relay access node receives downlink data from the donor access node, determines if signal conditions meet a threshold, and reroutes the data to the donor access node if conditions are poor, maintaining control of the transmission to reduce handovers and retransmissions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If dual connectivity is utilized to improve service quality and coverage, then wireless device connectivity is enhanced, but signal conditions deteriorate leading to increased handovers and retransmissions
Solution Approach 1:
The relay access node continuously monitors signal conditions and uses this feedback to dynamically determine whether to forward data to the donor access node or transmit directly to the wireless device. This feedback mechanism enables adaptive response to changing signal conditions, resolving the contradiction between maintaining dual connectivity benefits and managing signal quality.
Solution Approach 2:
The system dynamically adjusts the data transmission path based on real-time signal conditions. The relay access node can switch between two modes: forwarding to donor access node when signal conditions are poor, or direct transmission when conditions improve. This dynamic adaptability allows the system to maintain service quality while responding to signal variations.
2Object-affected harmful factors
If relay access node forwards all downlink data to donor access node, then signal conditions are improved for wireless device, but data transmission efficiency decreases due to additional routing steps
Solution Approach 1:
The relay access node changes the routing parameter (data path) based on signal condition parameters. When signal conditions meet criteria, the system switches from direct relayed transmission to donor access node transmission. This parameter change optimizes the balance between signal quality improvement and transmission efficiency.
Solution Approach 2:
The relay access node preliminarily determines signal conditions before forwarding data, using this advance assessment to decide the optimal transmission path. This preliminary action prevents inefficient routing decisions and ensures that data is only rerouted when necessary, maintaining overall transmission efficiency.
3Reliability
If relay access node maintains control channel with wireless device while forwarding data to donor access node, then handovers are reduced, but network complexity increases
Solution Approach 1:
The control channel and data channel functions are segmented and distributed between the relay access node and donor access node. The relay access node maintains control channel for handover management while the donor access node handles data transmission. This segmentation allows specialized functionality that reduces overall system complexity despite the multi-node architecture.
Data Source
AI summary
Systems, methods, and processing nodes for communicating with a wireless device via at least two access nodes include communicating with a wireless device via at least two access nodes includes receiving, at a relay access node coupled to a donor access node, downlink data intended to be transmitted to an end-user wireless device attached to the relay access node; determining that a signal condition at the relay access node meets a criteria; and in response to determining that the signal condition meets the criteria, forwarding the downlink data to the donor access node. The donor access node transmits the downlink data to the end-user wireless device, and the relay access node maintains a control channel with the end-user wireless device.