IMS Data Channel Priority Using Media Feature Tags
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing IMS network does not differentiate between applications using data channels, leading to potential resource allocation issues when access is limited, as critical applications may not receive priority over non-critical ones.
Innovation Solution
The IMS network assigns priority levels to data channels based on media feature tags, using modified network devices like the Data Channel Signaling Function (DCSF) to determine resource allocation and manage SIP signaling, ensuring higher priority for critical applications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the IMS network treats all data channels equally without priority differentiation, then the network configuration is simple and easy to manage, but critical applications cannot receive priority resources during congested states
Solution Approach 1:
The patent applies local quality by assigning different priority levels to different data channels based on their associated media feature tags. Instead of treating all data channels uniformly, the system differentiates priority treatment for critical applications (e.g., real-time communication) versus non-critical applications, allowing critical channels to receive preferential resource allocation during network congestion.
Solution Approach 2:
The patent utilizes parameter changes by introducing a priority level parameter to the data channel configuration. The network device modifies the treatment parameters of data channels based on their priority levels, changing resource allocation behavior from equal treatment to differentiated treatment according to the priority parameter assigned to each channel.
2Productivity
If the IMS network implements priority differentiation for data channels, then critical applications receive preferred resource allocation, but the network device complexity increases
Solution Approach 1:
The patent applies preliminary action by having the network device determine priority levels and allocate resources in advance based on the media feature tags before actual data transmission occurs. The system pre-configures priority treatment for different data channels, enabling efficient resource allocation during congestion without requiring complex real-time decision-making.
Solution Approach 2:
The patent uses an intermediary approach by introducing media feature tags as a mediator between the application layer and the network resource allocation layer. These tags serve as identifiers that carry priority information, allowing the network device to make automated priority-based decisions without complex analysis of application requirements.
3Reliability
If the IMS network does not differentiate between applications, then the system is simple to implement, but the probability of successful session setup decreases during congested states
Solution Approach 1:
The patent implements feedback mechanisms where the network device continuously monitors network conditions and adjusts resource allocation based on the priority levels of active data channels. This feedback enables the system to maintain high session setup success rates during congestion by dynamically favoring critical applications while managing overall network load.
Data Source
AI summary
A method, an end device, and a non-transitory computer-readable storage medium are described in relation to an IMS data channel priority service. The IMS data channel priority service may include assigning a priority to resources for a data channel based on a media feature tag included in a request from an end device. The IMS data channel priority service may include a data channel priority value in messages exchanged in the IMS network that establish the IMS data channel. The IMS data channel priority service may select a data channel control policy based on the data channel priority value.