Relay Node Handover Data Forwarding Without Direct Donor Interface
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Solution Overview
Problem
Existing wireless communication systems face challenges in ensuring reliable data transmission and efficient handover of relay nodes between donor nodes without a direct interface, particularly in scenarios where the relay node is moving, leading to significant signaling overhead and interrupted data transmission.
Innovation Solution
A method and apparatus are introduced to enhance data transmission by enabling efficient handover of relay nodes between donor nodes through the exchange of identity and forwarding information, utilizing transceivers and controllers to manage data transmission and handover processes, ensuring continuous data flow across nodes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If relay nodes move between donor nodes without a direct interface, then network coverage and mobility are improved, but data transmission continuity deteriorates due to interface limitations
Solution Approach 1:
The patent introduces the core network as an intermediary entity to establish indirect data forwarding paths between donor nodes. When a relay node moves from a source donor node to a target donor node without a direct interface, the core network mediates the data forwarding by receiving data from the source donor node and routing it to the target donor node, thereby maintaining data transmission continuity despite the lack of direct inter-donor node interface
Solution Approach 2:
The patent implements preliminary configuration of forwarding paths through message exchange between nodes before the relay node actually moves. The source donor node, target donor node, and core network pre-establish the indirect data forwarding path and configure necessary routing information, ensuring that when mobility occurs, data transmission can continue without interruption
2Adaptability or versatility
If indirect data forwarding through core network is implemented, then relay node mobility is supported, but signaling overhead increases
Solution Approach 1:
The patent reduces signaling overhead by performing preliminary configuration of indirect data forwarding paths before relay node mobility occurs. Through message exchange between the source donor node, target donor node, and core network, the forwarding paths and routing information are pre-established, eliminating the need for extensive real-time signaling during the actual mobility event
Solution Approach 2:
The patent maintains continuity of data transmission by keeping the indirect forwarding path configured and active throughout the relay node's movement. Rather than establishing new connections during mobility, the pre-configured path through the core network continues to carry data, reducing the signaling required to re-establish connections during movement
Data Source
AI summary
In a 5G or 6G communication system for supporting a higher data transmission rate, a method performed by a first node in a communication system includes transmitting a first message including first identity information to a second node, and receiving a second message including second identity information from the second node. The first message includes at least one of first forwarding information and first data information, the first forwarding information is used by the second node to forward data on an interface of a node indicated by the first identity information, and the first data information is used to include information of forwarded data on the interface of the node indicated by the first identity information.