QoS Mapping Table for 3GPP-WLAN Interworking
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current interworking of 3GPP and WLAN networks lacks effective QoS control, leading to inadequate service quality for services like VoIP and streaming due to independent QoS management in each network, resulting in potential service drops and quality degradation.
Innovation Solution
A wireless local area network access point device with a mapping table and QoS information converter that associates QoS information from wired sections with wireless sections, ensuring appropriate QoS control by converting DSCP values and access categories for encapsulated packets.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If QoS control is implemented independently in 3GPP network and WLAN network, then each network can maintain its own QoS management, but service quality degradation occurs due to lack of coordination between networks
Solution Approach 1:
The patent introduces a mapping table as an intermediary mechanism between 3GPP network QoS parameters and WLAN network QoS parameters. This mapping table enables coordination between the two networks by translating QoS information from one network domain to another, ensuring that service quality is maintained across the interworked networks without requiring direct integration of their QoS management systems.
2Device complexity
If QoS information is not converted between different network formats, then network complexity is reduced, but QoS control effectiveness deteriorates
Solution Approach 1:
The patent applies parameter changes by converting QoS parameters from 3GPP network format to WLAN network format through a mapping table. This transformation enables precise QoS control in the WLAN network by translating the QoS information into the appropriate parameter format for wireless transmission, maintaining control precision while managing complexity through standardized parameter mapping.
3Productivity
If DSCP values are not mapped to access categories, then packet processing is simplified, but service quality for VoIP and streaming deteriorates
Solution Approach 1:
The patent implements preliminary action by pre-establishing a mapping table that contains predetermined correspondence between DSCP values and access categories before packet processing occurs. This allows the access point device to quickly translate DSCP values to access categories without complex real-time processing, maintaining both processing efficiency and service quality for time-sensitive applications like VoIP and streaming.
Data Source
AI summary
A mapping table holds correspondence relation between quality of service information of wired sections and quality of service information of wireless sections. A quality of service information converter, upon receiving encapsulated packets directed from a mobile communication network to a wireless local area network terminal, acquires quality of service information of wired sections that has been conferred to the packets, and finds quality of service information of wireless sections that corresponds to the quality of service information of wired sections in the mapping table. The quality of service information converter then uses this quality of service information of wireless sections to wirelessly transmit the encapsulated packets to a wireless local area network terminal.