Traffic Flow Control in Multi-RAT 5G Networks
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Solution Overview
Problem
Next-generation 5G wireless networks with multiple radio access technologies (RATs) face challenges in efficiently managing traffic flow across diverse radio access technologies, leading to suboptimal data transmission latency and throughput.
Innovation Solution
The implementation of a traffic splitting process at the packet data convergence protocol layer, where a master device determines qualification and data volume threshold values for slave nodes based on latency and throughput, enabling data offloading to the most suitable slave nodes using a water filling process to optimize traffic flow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If multiple radio access technologies are deployed to increase network capacity, then the quantity of data transmission increases, but the complexity of traffic flow management increases
Solution Approach 1:
The patent segments traffic flow management by implementing separate flow control mechanisms for each radio access technology (E-UTRA and NR). The network device independently determines data volume threshold values for each RAT based on their respective latency and throughput characteristics, allowing granular control without managing all traffic as a single complex system.
Solution Approach 2:
The patent dynamically adjusts data volume threshold values as parameters based on real-time network conditions, latency requirements, and throughput capabilities of different RATs. This allows the system to adapt traffic routing decisions to changing conditions, optimizing performance without increasing structural complexity.
2Quantity of substance
If data is transmitted through multiple slave nodes to utilize diverse RATs, then network capacity increases, but transmission latency increases
Solution Approach 1:
The patent applies local quality by matching specific traffic flows to slave nodes with appropriate RAT characteristics. Each slave node's data volume threshold is determined based on its local latency and throughput properties, ensuring that time-sensitive traffic is routed to nodes with lower latency characteristics while maximizing overall network capacity.
Solution Approach 2:
The system dynamically determines data volume threshold values for each slave node based on real-time latency and throughput measurements. This dynamic adjustment allows the network to adapt to changing conditions, routing traffic through optimal paths that minimize latency while utilizing multiple RATs for increased capacity.
3Productivity
If traffic flow control is implemented at the PDCP layer, then data transmission efficiency improves, but the complexity of protocol stack management increases
Solution Approach 1:
The patent implements a universal flow control mechanism at the PDCP layer that handles multiple RATs (E-UTRA and NR) through a single standardized interface. The network device uses a unified approach to determine data volume thresholds and control traffic flows across different RATs, reducing the need for separate protocol management mechanisms for each technology.
Data Source
AI summary
Traffic flow control is facilitated in a multi-radio access technology wireless network infrastructure. A qualification threshold value can be determined for a slave node device, as a function of the qualification threshold value, a data volume threshold value can be determined for the slave node device, and, as a function of the data volume threshold value, transmission of data to a user equipment device can be facilitated by the slave node device.