Relay Backhaul Resource Partitioning for Mobile Handover
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Solution Overview
Problem
Wireless communication systems face service degradation or interruption during relay node handovers due to challenges in managing mobility and resource allocation, leading to suboptimal user experience.
Innovation Solution
Implementing a method to detect and manage relay node handovers by obtaining and indicating access/backhaul resource partitioning information, configuring resource allocations, and ensuring Quality of Service (QoS) requirements are met through efficient resource management and signaling techniques.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If relay node handover is implemented to provide continuous communication service, then mobility and service coverage are improved, but service degradation or interruption occurs during handover due to resource allocation challenges
Solution Approach 1:
The patent applies preliminary action by pre-configuring access and backhaul resource partitions at the target cell before the relay node actually hands over. The source eNB indicates the access/backhaul resource partitioning to the target eNB in connection with the requested handover, so that when the handover occurs, the target cell is already prepared with the appropriate resource allocation, preventing service interruption.
Solution Approach 2:
The patent uses the source eNB as an intermediary to transfer the access/backhaul resource partitioning information to the target eNB. This intermediary mechanism ensures that critical resource allocation information is communicated during the handover process, enabling the target cell to properly manage resources and maintain service continuity.
2Productivity
If access and backhaul resources are shared at the target cell during handover, then resource utilization efficiency is improved, but resource conflicts and service degradation occur
Solution Approach 1:
The patent applies segmentation by dividing resources into distinct access resources and backhaul resources at the target cell. The source eNB indicates the access/backhaul resource partitioning to the target eNB, which then configures the allocation of access subframes and backhaul subframes separately. This segmentation prevents resource conflicts between relay-to-UE communications (access) and eNB-to-relay communications (backhaul), ensuring service quality while maintaining efficient resource utilization.
Data Source
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AI summary
Systems and methodologies are described herein that facilitate techniques for design of relay backhaul to support mobility of relay nodes in a wireless communication system. According to various aspects herein, techniques are provided to enable and support the use of mobile relays and to facilitate handover of mobile relays between respective donor cells. More particularly, techniques are provided herein for relay backhaul control channel assignment associated with hand in or hand out of mobile relays, access/backhaul resource partitioning for mobile relays, and management of quality of service (QoS) requirements associated with a relay handover.