On-Demand QoS Rerouting in Wireless Networks
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Solution Overview
Problem
LTE networks face challenges in providing on-demand Quality of Service (QoS) due to network resource constraints, leading to denied QoS requests and interruptions in user data transfer when network capacity is reached.
Innovation Solution
A system and method that monitor network interfaces to determine on-demand QoS needs, calculate quality of service-related measurements, and establish alternate communication paths to meet QoS requirements, ensuring continuous service by rerouting traffic when capacity limits are reached.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional QoS approaches are used in LTE networks, then network resource control is simplified, but on-demand QoS requirements cannot be met when network capacity is reached
Solution Approach 1:
The patent establishes alternate communication paths in advance before network congestion occurs. The network pre-configures multiple paths for data transmission, so when congestion is detected, traffic can be rapidly switched to pre-prepared alternate paths without complex real-time routing decisions, thus meeting on-demand QoS while controlling complexity
Solution Approach 2:
The patent implements dynamic QoS parameter adjustment based on real-time network conditions. The system continuously monitors network status and dynamically modifies QoS parameters such as bandwidth allocation and priority levels, enabling the network to adapt to changing demands while maintaining manageable complexity through automated control mechanisms
2Reliability
If network capacity is increased to meet QoS demands, then QoS requirements can be satisfied, but network resource constraints and costs increase
Solution Approach 1:
The patent implements QoS guarantees selectively for specific applications or traffic flows that require it, rather than providing universal QoS across all network traffic. By applying QoS mechanisms only where necessary and using traffic classification to identify priority flows, the system achieves reliable QoS for critical services while avoiding the excessive resource consumption that would result from network-wide QoS enforcement
Solution Approach 2:
The patent dynamically adjusts QoS parameters such as bandwidth allocation, priority levels, and buffer sizes based on real-time network conditions and application requirements. This allows the system to optimize resource utilization by allocating more resources to high-priority traffic when available while reducing allocations during congestion, thereby achieving reliable QoS without permanently over-provisioning network resources
3Reliability
If alternate communication paths are established, then QoS requirements can be met during congestion, but system complexity increases
Solution Approach 1:
The patent pre-establishes multiple alternate communication paths during network setup phases, so when congestion or failures occur, the system can immediately switch to pre-configured paths without performing complex real-time path computation. This preliminary preparation ensures data transfer continuity while keeping the complexity of path management manageable through automated selection algorithms
Solution Approach 2:
The patent introduces a path selection mechanism that acts as an intermediary between the network core and user equipment. This intermediary component automatically monitors network conditions, selects appropriate paths based on predefined criteria, and manages path switching, thereby ensuring reliable data transfer while abstracting the complexity of multi-path management from the core network and end devices
Data Source
AI summary
On-demand quality of service guarantees are provided in a wireless network environment. The system determines an on-demand quality of service for a segment of a communication path between a user equipment communicating with a radio access network connected to a core network and an external network connected to the core network. The system then determines if the on-demand quality of service for the segment meets a quality of service requirement. If the on-demand quality of service for the segment does not meet the quality of service requirement, the system identifies an alternate communication path between the user equipment and the external network, wherein the alternate communication path differs from the communication path. The system can then setup the alternate communication path for traffic between the user equipment and the external network.