QoS and QoE Guaranteed Channel for Dynamic Bit Rate Allocation
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Solution Overview
Problem
Current mobile communication networks face inefficiencies in supporting services with stringent Quality of Service (QoS) and Quality of Experience (QoE) requirements, particularly for real-time video and other high-bandwidth applications, due to the limitations of traditional Guaranteed Bit Rate (GBR) bearers which are inefficient in handling variable bandwidth demands.
Innovation Solution
A QoS and QoE guaranteed channel (QQGC) is introduced, characterized by an Effective Bit Rate (EBR), Average Bit Rate (ABR), and Maximum Bit Rate (MBR), which dynamically adjusts based on QoE feedback to optimize resource allocation and ensure desired QoE levels, allowing for more efficient support of real-time video and other high-bandwidth services without over-provisioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If GBR bearers are used to support real-time video flows with high MBR, then QoS requirements are met, but network resources are over-provisioned and bandwidth usage efficiency deteriorates
Solution Approach 1:
The patent introduces a new bearer type with dynamic bit rate characteristics that can adapt between guaranteed and maximum bit rates based on actual traffic needs. The bearer dynamically adjusts its resource allocation, allowing the network to provision for peak MBR when necessary while falling back to lower ABR during normal operation, thus avoiding permanent over-provisioning of network resources.
Solution Approach 2:
The patent changes the fundamental parameters of the bearer by introducing three new parameters (ABR, MBR, and EBR) that replace the traditional single GBR parameter. This allows the system to define a bearer with a guaranteed minimum (ABR) and a maximum capacity (MBR), with dynamic effective bit rate (EBR) adjustment based on actual traffic conditions, resolving the contradiction between QoS guarantee and resource efficiency.
2Reliability
If GBR bearers are used to support traffic flows with high variance in bandwidth consumption, then QoS is maintained, but bandwidth usage efficiency deteriorates
Solution Approach 1:
The new bearer type implements dynamic adaptation to traffic variance by adjusting the effective bit rate between the guaranteed ABR and maximum MBR based on actual traffic patterns. This allows the system to maintain QoS during high-variance periods while optimizing bandwidth usage during low-variance periods, improving overall productivity.
3Reliability
If network resources are over-provisioned to support MBR of real-time video flows, then QoE requirements are met, but network cost increases
Solution Approach 1:
The patent applies partial provisioning by allocating network resources based on the effective bit rate (EBR) which is typically lower than the maximum bit rate (MBR). The system provisions for the guaranteed ABR and dynamically allocates additional resources up to MBR only when needed, avoiding the excessive resource allocation that would be required if full MBR were always provisioned.
4Device complexity
If traditional bearer models are used, then network simplicity is maintained, but ability to support services with stringent QoS/QoE requirements deteriorates
Solution Approach 1:
The new bearer type serves multiple functions: it provides guaranteed service like traditional GBR bearers, supports best-effort traffic like non-GBR bearers, and dynamically adapts between these modes based on actual traffic conditions. This multi-functionality allows a single bearer type to replace multiple specialized bearer types, maintaining network simplicity while enhancing QoS/QoE support capability.
Data Source
AI summary
The present application provides a channel type used to support user QoE expectations, which is, in particular, a QoS and QoE guaranteed channel (QQGC). Also provided is a related method and system for providing a QQGC. Effective bit rate (EBR), average bit rate, and maximum bit rate, are determined and used to support the channel. The EBR can be determined based on QoE reports. An application function, such as a network data analytics function provides the indication of effective bit rate. One or more portions of the application function can be provided in potentially different locations of a communications network and operatively coupled. Alternatively, application function portions can be co-located. The EBR is provided to and used by devices in the network to reserve user plane resources to support data flows at the EBR. The EBR can also be used for admission or rejection of requests for a QQGC channel.