LTE WLAN Aggregation QoS Mapping via RRC Signaling
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Solution Overview
Problem
Current LTE specifications lack defined procedures for uplink Quality of Service (QoS) mapping between LTE and Wireless Local Area Network (WLAN) technologies, leading to inefficiencies in data transmission and network resource management.
Innovation Solution
The implementation of Long Term Evolution-Wireless Local Area Network Aggregation (LWA) systems that enable mapping information to be communicated from the Wireless Termination (WT) to the enhanced Node B (eNB) using radio resource control (RRC) signaling, allowing for the translation of LTE Quality of Service Class Identifiers (QCI) to WLAN access categories (AC), facilitating efficient data transmission by establishing and managing bearers and access categories.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If LTE-WLAN aggregation is implemented without defined uplink QoS mapping procedures, then network capacity and data transmission speed are improved, but network resource management efficiency and service quality consistency deteriorate
Solution Approach 1:
The patent transforms the QoS parameter mapping from an undefined state to a defined state by establishing specific mapping relationships between LTE QCI parameters and WLAN AC parameters. This allows the system to maintain QoS consistency across different access technologies while enabling aggregation, thus resolving the contradiction between improved transmission speed and degraded QoS management consistency.
2Adaptability or versatility
If LTE-WLAN aggregation is implemented without standardized mapping procedures, then network flexibility and adaptability are improved, but network complexity and difficulty of implementation increase
Solution Approach 1:
The patent creates a universal mapping framework that can handle multiple QCI to AC mapping scenarios through a standardized procedure. This universal approach allows the system to maintain flexibility for different service types while reducing implementation complexity through consistent mapping rules, resolving the contradiction between network flexibility and implementation complexity.
3Ease of manufacture
If uplink QoS mapping is not defined in LTE specifications, then ease of deployment is improved, but network performance optimization and resource allocation efficiency worsen
Solution Approach 1:
The patent performs preliminary action by pre-defining the QoS mapping relationships between LTE and WLAN before actual data transmission occurs. The mapping configurations are established in advance through standardized procedures, allowing efficient resource allocation during operation without requiring complex real-time decisions, thus resolving the contradiction between deployment ease and resource allocation efficiency.
Data Source
AI summary
Mapping information of a bearer or quality of service can be communicated from a Wireless Local Area Network Termination (WT) to the enhanced Node B (eNB), which then uses radio resource control (RRC) signaling to communicate the mapping to the user equipment (UE). For example, three options can be used to communicate mapping information: (1) Operations and Management (OAM), (2) Semi-static Xw-AP signaling (e.g., WT Configuration Update or Xw Setup procedures) or (3) Dynamic Xw-AP procedures (e.g., WT Addition Request procedure). In some embodiments, the mapping can be signaled by (1) bearer to wireless local area networks (WLAN) access category (AC) mapping or (2) long term evolution (LTE) quality of service class identifier (QCI) to WLAN AC mapping.