Enhanced Connection Admission Control for VoLTE Priority
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Solution Overview
Problem
In LTE mobile wireless communications networks, the inability to distinguish between different types of data connections leads to delayed voice and video communications when network utilization exceeds thresholds, causing real-time communications to fail due to latency and resource limitations.
Innovation Solution
Implementing enhanced admission control mechanisms in wireless network nodes that allow mobile devices to override backoff indications and establish connections for VoLTE communications by providing modified random access responses with override indicators, ensuring priority and best effort quality of service even during high network utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the wireless network node implements strict admission control to maintain network utilization below thresholds, then network resource stability is improved, but real-time communication reliability deteriorates due to connection delays
Solution Approach 1:
The patent applies preliminary action by pre-configuring the wireless network node to recognize and prioritize VoLTE connection requests before general admission control thresholds are exceeded. The node is prepared in advance to identify VoLTE traffic patterns and allocate resources proactively, allowing real-time communications to establish connections even when overall network utilization is high, thus preventing connection delays while maintaining overall network stability
Solution Approach 2:
The patent implements dynamics by making the admission control mechanism adaptive rather than static. The wireless network node dynamically adjusts admission control parameters based on the type of connection request received. When a VoLTE request is detected, the node dynamically overrides standard admission control rules, creating a flexible system that can respond to different traffic priorities in real-time while maintaining overall network resource stability
2Reliability
If the network prioritizes VoLTE connections during high utilization periods, then real-time communication quality is improved, but existing data connections may be dropped
Solution Approach 1:
The patent applies dynamics by implementing a dynamic resource allocation mechanism that can shift network resources from data connections to VoLTE connections when needed. The system continuously monitors network conditions and connection types, dynamically adjusting resource distribution in real-time. This allows the network to prioritize VoLTE quality when necessary while managing data connection continuity through adaptive resource management rather than rigid allocation
Solution Approach 2:
The patent implements feedback by establishing a monitoring and response mechanism where the wireless network node continuously observes network utilization levels and connection types. When high utilization is detected alongside VoLTE requests, the system receives feedback about the situation and responds by adjusting admission control decisions. This feedback loop enables informed decisions about whether to prioritize VoLTE connections or maintain existing data connections based on current network conditions
Data Source
AI summary
An evolved node B receives a random access preamble from a mobile device and determines if utilization exceeds a threshold. Upon determining utilization exceeds the threshold, the eNodeB sends a random access response including a backoff indicator and a modified uplink grant indicating that the mobile device can override the backoff indicator if the connection request is part of a voice over long term evolution call.