Mobile Backhaul QoS Bandwidth Harmonization
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Solution Overview
Problem
Current mobile backhaul networks lack harmonization with Radio Access Network (RAN) and Evolved Packet Core (EPC) in terms of Quality of Service (QoS) and traffic bandwidth management, leading to unanticipated service differentiation and performance issues due to static bandwidth allocation and lack of dynamic interaction.
Innovation Solution
Implementing a system that determines and communicates bandwidth estimates and expiration times for QoS classes between base stations and mobile backhaul nodes, allowing dynamic adjustment of downstream bandwidth to match RAN scheduler settings, thereby harmonizing QoS bandwidth and avoiding congestion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If static bandwidth allocation is used in mobile backhaul networks, then network configuration is simple, but service differentiation and QoS performance are poor
Solution Approach 1:
The patent implements dynamic bandwidth allocation in mobile backhaul networks by establishing a harmonization mechanism between RAN and MBH bandwidth management. The system dynamically adjusts backhaul bandwidth based on real-time QoS requirements and network conditions, transitioning from static to dynamic configuration to improve service differentiation while maintaining operational simplicity through automated policies.
Solution Approach 2:
The patent introduces a feedback mechanism where the MBH network receives QoS information from the RAN network and adjusts its bandwidth allocation accordingly. This closed-loop feedback enables the system to respond to changing traffic patterns and service requirements, improving QoS performance without requiring complex manual reconfiguration.
2Reliability
If dynamic bandwidth adjustment is implemented, then QoS harmonization is improved, but device complexity increases
Solution Approach 1:
The patent creates a universal harmonization mechanism that operates across different network elements (eNodeBs, MBH nodes, and core network). By establishing a common set of policies and protocols that work throughout the entire network, the system achieves QoS harmonization without requiring element-specific complex implementations, thereby managing overall system complexity.
Solution Approach 2:
The patent introduces an intermediary harmonization mechanism between the RAN and MBH networks that mediates bandwidth allocation decisions. This intermediary layer simplifies the interaction between network segments by providing a standardized interface for QoS information exchange, reducing the complexity burden on individual network elements while achieving overall QoS harmonization.
3Adaptability or versatility
If bandwidth estimates are communicated with expiration times, then dynamic adaptation is enabled, but information processing complexity increases
Solution Approach 1:
The patent implements preliminary action by pre-establishing expiration times for bandwidth estimates before they are communicated between network elements. This allows receiving nodes to automatically manage the lifecycle of bandwidth information without complex processing, simply by respecting the pre-set expiration timestamps and updating estimates accordingly, thereby enabling dynamic adaptation with minimal processing overhead.
Data Source
AI summary
An embodiment includes determining estimate(s) of bandwidth for class(es) of quality of service to be implemented in base station(s) for service(s) provided to user equipment by the base station(s), determining expiration time(s) for corresponding ones of the estimate(s) of bandwidth, and communicating indications of the same toward mobile backhaul node(s). At a backhaul node, the indications are received and, based on the received indications, downstream bandwidth is modified for user equipment of different quality of service classes, wherein the downstream bandwidth passes through the mobile backhaul node toward the base station(s). Apparatus, software, and computer program products are also disclosed.