Priority Indication Mapping in Separated Call Bearer Control
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Solution Overview
Problem
In separated call control and bearer control architectures, existing protocols lack an efficient method to explicitly indicate priority calls, especially in emergency situations, leading to sub-optimal resource allocation and complex network configuration requirements.
Innovation Solution
A method is introduced to communicate call control level priority indications between telecommunications nodes by assigning a bearer level priority indication in a bearer network protocol message, allowing explicit priority indication at the bearer level, using BICC Precedence values and mapping call control priority to bearer priority, enabling effective resource allocation in emergency scenarios.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If priority calls are handled by sacrificing normal calls when capacity is reached, then emergency call reliability is improved, but normal call service quality deteriorates
Solution Approach 1:
The patent applies preliminary action by reserving a predetermined percentage (e.g., 2%) of network resources in advance specifically for emergency calls. This reserved capacity ensures that emergency calls can always be accommodated without sacrificing normal calls, as the resources are pre-allocated and unavailable for normal traffic under any circumstances.
2Reliability
If a percentage of resources is reserved for emergency calls, then emergency call reliability is improved, but network capacity utilization deteriorates
Solution Approach 1:
The patent applies local quality by creating a distinct resource allocation regime for emergency calls versus normal calls. Specifically, a dedicated portion of network resources (e.g., 2%) is assigned with special properties (reserved status) that differ from the general pool of resources. This localized quality differentiation allows the network to optimize for both emergency reliability and normal capacity utilization by treating different resource portions differently based on their intended purpose.
3Adaptability or versatility
If priority indication is implemented in separated CC/BC protocols, then call prioritization functionality is improved, but protocol complexity and configuration requirements worsen
Solution Approach 1:
The patent applies the intermediary principle by introducing a standardized priority indication mechanism that acts as a mediator between call control and bearer control functions. The priority indication serves as an intermediary signal that can be inserted at the call control level and automatically propagated through the bearer control protocol without requiring complex configuration or interpretation at each network node. This intermediary mechanism simplifies the overall system complexity while maintaining full prioritization functionality.
Data Source
AI summary
The present invention relates generally to telecommunication services, and in particular, to communicating priority indications between telecommunication nodes in a telecommunication system having a separated call control and bearer control architecture. The present invention provides a number of solutions which map or assign the call level priority to the bearer level.