Secondary RLC Entity Activation via Node-Local Control Elements
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Solution Overview
Problem
In radio communication networks, particularly in 3GPP systems, there is a challenge in dynamically controlling secondary radio link control entities for packet duplication across multiple nodes without timely coordination, leading to inconsistent activity states of RLC entities and potential mismanagement of radio resources.
Innovation Solution
A method and device for transmitting a control element (CE) that selectively activates or deactivates secondary RLC entities, where one node is designated to control the transmission of the CE to the radio device, allowing for dynamic control of packet duplication without strict inter-node coordination, enabling each node to determine the activity states of its secondary RLC entities independently.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If a control element is transmitted from one node to control secondary RLC entities of another node, then dynamic control of packet duplication is achieved, but inconsistency in activity states and radio resource mismanagement occurs
Solution Approach 1:
The patent segments the control functionality by node, where each node independently controls the activity state of its own secondary RLC entities through separately transmitted control elements. This segmentation prevents the inconsistency issue that arises when one node attempts to control another node's RLC entities, as each node's control decisions are localized and independent.
Solution Approach 2:
The patent applies local quality by enabling each node to make independent control decisions for its own secondary RLC entities based on local conditions and requirements. Each node transmits control elements that affect only its own RLC entities, allowing localized optimization without interfering with other nodes' resource management.
2Reliability
If strict inter-node coordination is implemented for CE transmission, then activity state consistency is maintained, but signaling overhead and coordination complexity increase
Solution Approach 1:
The patent extracts the coordination requirement by allowing each node to independently transmit control elements for its own secondary RLC entities without needing to coordinate with other nodes. This extraction eliminates the complex inter-node coordination mechanism while maintaining consistency, as each node's control actions are self-contained and do not require synchronization with other nodes.
Solution Approach 2:
Each node serves itself by independently controlling its own secondary RLC entities through autonomously transmitted control elements. This self-service approach eliminates the need for inter-node coordination mechanisms, reducing signaling overhead and system complexity while maintaining reliable activity state management.
3Reliability
If extensive signaling coordination between nodes is used, then consistent control of secondary RLC entities is achieved, but signaling overhead and transmission delay increase
Solution Approach 1:
The patent removes the signaling coordination step by enabling each node to independently transmit and process control elements for its own secondary RLC entities. This extraction eliminates the time-consuming coordination signaling between nodes while maintaining control consistency through localized decision-making.
Solution Approach 2:
Each node independently manages its secondary RLC entities by transmitting control elements based on its own assessment of network conditions and requirements. This self-service mechanism eliminates the need for time-consuming inter-node signaling coordination, reducing transmission delay while maintaining reliable and consistent control.
Data Source
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AI summary
A technique for transmitting a control element, CE, for selectively activating and deactivating one or more secondary radio link control, RLC, entities configured for packet duplication in a radio communication between a radio device (504) and a radio access network, RAN is provided. The RAN comprises a first node (200; 100) and a second node (100; 200). The first node (200; 100) comprises a primary RLC (520) entity configured for the packet duplication and the second node (100; 200) comprises at least one of the one or more secondary RLC entities (522; 524; 526). As to a method aspect, a method comprises or initiates transmitting the CE from the RAN to the radio device (504), wherein the CE is indicative of an activity state of each of the one or more secondary RLC entities (522; 524; 526) configured for the packet duplication.