Uplink Packet Duplication Coordination in 5G RAN Nodes
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Solution Overview
Problem
In the context of 5G wireless networks, the configuration of initial uplink packet duplication states for radio link control (RLC) entities across different radio access network (RAN) nodes is challenging due to the lack of coordination between these nodes.
Innovation Solution
A system and method where a host RAN node determines and transmits the location of a primary RLC entity and the initial state of uplink duplication to an assisting RAN node, allowing the assisting node to store and manage the initial state of uplink duplication for secondary RLC entities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a host RAN node configures uplink packet duplication across multiple RAN nodes, then reliability of data transmission is improved, but coordination complexity between RAN nodes increases
Solution Approach 1:
The host RAN node acts as an intermediary that centralizes the configuration and management of uplink packet duplication. It determines the location of primary and secondary RLC entities, manages their initial states, and coordinates with assisting RAN nodes through standardized interfaces. This mediator role simplifies the overall system coordination by consolidating control functions at the host node while enabling reliable multi-node data transmission through its centralized management capability.
2Stability of the object's composition
If the host RAN node manages initial state of all RLC entities centrally, then configuration consistency is improved, but signaling overhead increases
Solution Approach 1:
The management of RLC entity states is segmented between host and assisting RAN nodes. The host node determines and manages the initial state of the primary RLC entity, while assisting nodes manage their respective secondary RLC entities. This segmentation reduces signaling overhead by distributing state management responsibilities, while configuration consistency is maintained through coordinated information exchange between host and assisting nodes about entity locations and states.
3Adaptability or versatility
If multiple secondary RLC entities are distributed across assisting RAN nodes, then uplink duplication capability is improved, but state tracking complexity increases
Solution Approach 1:
A feedback mechanism is established where the host RAN node receives information from assisting nodes about the location and state of secondary RLC entities. Assisting nodes provide feedback regarding their managed secondary entities, enabling the host node to maintain an accurate overview of all RLC entity states across the network. This feedback loop improves uplink duplication capability by enabling distributed entity placement while managing state tracking complexity through automated information collection and centralized monitoring.
Data Source
AI summary
Presented are a systems, methods, apparatuses, or a computer-readable media for uplink packet duplication transmission. A host radio access network (RAN) node hosting a packet data convergence protocol (PDCP) entity may determine a location of a primary radio link control (RLC) entity. The host RAN node may transmit, to an assisting RAN node, the location of the primary RLC entity.