Cell Site Router QoS Indicator Alignment
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Solution Overview
Problem
In heterogeneous wireless networks, data packets marked with a first quality of service (QoS) indicator by one network element may be treated differently when traversed by a different network element, leading to mismatches between quality of service indicators such as DSCP and QCI, causing dropped packets or reduced quality of service for end-users.
Innovation Solution
A system and method where a cell site router, coupled to an access node, receives data packets and determines mismatches between quality of service indicators, changing the indicators to ensure they match the intended priority level before forwarding, using a stored priority table to select appropriate DSCP values that correlate with the QCI of the radio access network or bearer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If dual connectivity is implemented in heterogeneous networks with different RATs, then network capability and bandwidth are improved, but QoS indicator mismatches occur between different network elements
Solution Approach 1:
The patent introduces a mapping table as an intermediary mechanism between different QoS indicator systems (DSCP and QCI). This mapping table stores correspondence relationships between DSCP values and QCI values, enabling automatic translation and alignment of QoS indicators across different network elements and RATs, thereby resolving the mismatch problem while maintaining dual connectivity capability
Solution Approach 2:
The patent dynamically adjusts QoS indicator parameters by retrieving appropriate DSCP values from the mapping table based on the QCI of incoming data packets. This parameter transformation ensures that QoS indicators are consistently aligned across heterogeneous network elements, preventing packet drops while preserving the adaptability benefits of dual connectivity
2Adaptability or versatility
If different network elements use different QoS indicator configurations, then network flexibility is improved, but packet delivery reliability deteriorates due to indicator mismatches
Solution Approach 1:
The mapping table serves as an intermediary that bridges different QoS configuration systems. It stores pre-defined correspondence relationships between DSCP and QCI values, allowing network elements with different configurations to communicate effectively by translating indicators through this intermediary, thus maintaining both configuration flexibility and packet delivery reliability
Solution Approach 2:
The system implements a feedback mechanism where the cell site router continuously monitors QoS indicator mismatches and uses the mapping table to correct them. This feedback loop ensures that even when different network elements use different configurations, packet delivery reliability is maintained by automatically adjusting indicators based on the stored correspondence relationships
Data Source
AI summary
Ensuring a quality of service for a wireless device attached to an access node by receiving a data packet at a routing node communicably coupled to the access node, wherein the data packet is transmitted by the wireless device to the access node using a bearer that is associated with a first priority level, determining that the data packet is marked with a first quality of service indicator that is associated with a second priority level that is lower than the first priority level, and marking the data packet with a second quality of service indicator that is associated with the first priority level prior to forwarding the data packet to a destination node. The routing node comprises a cell site router configured to receive the data packet from the access node, and the priority levels include QoS parameters such as DSCP and QCI values.