Relay Node Resource Processing for Seamless Backhaul Switching
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Solution Overview
Problem
In mobile communication systems like B3G and LTE-A, the introduction of Relay Nodes (RN) to manage higher frequency bands is necessary due to increased radio wave propagation and attenuation, but existing technologies lack a method to configure backhaul sub-frame information during RN switching, leading to interference and service disruptions.
Innovation Solution
A resource processing method and device that enables RNs to determine, based on a preset policy, whether the destination eNB needs to divide resources, and then configures and distributes backhaul sub-frame information during the switching process, ensuring seamless operation and minimizing packet loss.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If RN switches to a target cell with different frequency, then the RN can maintain connection with the core network, but the backhaul sub-frame configuration becomes unclear and resource division is not properly managed
Solution Approach 1:
The source DeNB pre-allocates backhaul sub-frame configuration information and sends it to the target DeNB before the RN actually switches. This preliminary action ensures that the target DeNB already has the necessary configuration ready, eliminating the configuration gap during switching and maintaining connection reliability without increasing operational complexity.
Solution Approach 2:
The source DeNB acts as an intermediary that collects backhaul sub-frame configuration information from the RN and forwards it to the target DeNB. This intermediary mechanism ensures proper resource division and configuration transfer during RN switching, resolving the complexity of direct configuration management between RN and target DeNB.
2Object-affected harmful factors
If sub-frame is divided between DeNB and RN, then interference is avoided, but the configuration and management of backhaul sub-frames becomes complex
Solution Approach 1:
The RN autonomously determines whether resource division is needed based on frequency comparison between its Uu interface and the target cell's frequency. When the frequencies differ, the RN automatically requests backhaul sub-frame configuration from the DeNB. This self-service mechanism reduces the need for complex centralized configuration management while ensuring interference is avoided through proper resource division.
Data Source
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AI summary
Disclosed are a resource processing method and device based on relay node (RN) switching. The method comprises: an RN determining, according to a preset policy, whether a destination evolved Node B device DeNB is required to divide resources for the RN; and informing the destination DeNB of a determination result. In the embodiments of the present invention, sub-frame configuration of a backhaul link can be performed in the switching process, configuration of a carrier aggregation cell is coordinated, influence on operation of the RN is reduced, service continuity of a user is ensured maximally, and the number of discarded packets is reduced, thereby providing good network experiences for the user.