LTE WLAN QoS Mapping via 5-Tuple Bearer Identifiers
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Solution Overview
Problem
Current wireless communications systems face challenges in efficiently managing data transmission between LTE and WLAN networks, particularly in maintaining communication quality and effectively utilizing quality of service (QoS) information across different wireless communication protocols.
Innovation Solution
A wireless communications system that includes a base station and a mobile station capable of using both LTE and WLAN protocols, where the system controls data transmission by identifying and mapping QoS information using an access category identifier, allowing transparent processing of QoS information for efficient data transmission between the two networks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If data transmission control is performed without mapping QoS information between LTE and WLAN, then device complexity is reduced, but communication quality deteriorates due to inability to maintain service levels across networks
Solution Approach 1:
The patent introduces an intermediary mapping mechanism that translates QoS parameters between LTE and WLAN networks. The base station performs QoS mapping by matching service data flow identifiers (5-tuple) with corresponding access categories in the target network, ensuring service level continuity without requiring complex end-device implementation. This intermediary approach maintains communication quality while preventing excessive complexity at the mobile station level.
Solution Approach 2:
The QoS control function is segmented and distributed across different network elements. The base station handles the complex QoS mapping and access category identification, while mobile stations perform simpler operations like matching 5-tuple identifiers. This segmentation allows sophisticated QoS management to be implemented at the network level without burdening user equipment with excessive complexity.
2Reliability
If QoS-based transmission control is implemented across both LTE and WLAN, then communication quality is maintained, but device complexity increases due to dual protocol management
Solution Approach 1:
The patent merges QoS management functions into a unified framework where the base station controls both LTE and WLAN QoS parameters through a single mapping mechanism. By combining the QoS control logic at the network side and using common identifiers (5-tuple) that work across both protocols, the system maintains QoS without requiring separate complex management systems for each protocol at the device level.
Solution Approach 2:
The invention employs universal 5-tuple identifiers (source IP, destination IP, source port, destination port, protocol type) that function across both LTE and WLAN networks. This universal identification mechanism allows the same QoS mapping approach to be applied to different wireless protocols, reducing the need for protocol-specific complexity at mobile stations while maintaining QoS awareness across heterogeneous networks.
3Productivity
If seamless data offloading between LTE and WLAN is enabled, then productivity is improved through efficient data transmission, but measurement precision is reduced due to difficulty in tracking QoS across networks
Solution Approach 1:
The patent implements feedback mechanisms where the base station continuously monitors transmission status and QoS parameter matching between LTE and WLAN. The system uses feedback from successful mappings and transmission outcomes to refine its QoS mapping decisions, ensuring accurate tracking of service levels even as data flows between different networks. This feedback loop maintains measurement precision while enabling seamless offloading.
Solution Approach 2:
The base station performs preliminary QoS mapping and access category identification before data transmission begins. By pre-establishing the mapping between LTE QoS parameters and WLAN access categories based on 5-tuple matching, the system ensures accurate QoS tracking is set up in advance, enabling both seamless offloading and precise measurement without requiring complex real-time adjustments during transmission.
Data Source
AI summary
A wireless communications system includes a base station configured to control a second wireless communication different from a first wireless communication by a control unit configured to control the first wireless communication; and a mobile station configured to be capable of performing data transmission between the mobile station and the base station, using one of the first wireless communication and the second wireless communication. When data is transmitted between the base station and the mobile station using the second wireless communication, a sender station among the base station and the mobile station performs transmission control of using an identifier of a bearer of the data transmitted to a receiver station among the base station and the mobile station and using correspondence information of the identifier and an access category that is QoS information in the second wireless communication to identify the access category of the data and transmit the data.