Base Station QoS Mapping for LTE–5G Direct Communication
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently managing quality of service (QoS) parameters for direct communication between different systems, particularly in vehicular environments, where message transmission distances are limited, and there is a need for effective switching and mapping of QoS parameters to support various services and applications.
Innovation Solution
The implementation of an apparatus and method for obtaining and switching QoS parameters using mapping information in wireless communication systems, including base stations and terminals, to facilitate direct communication between systems, such as LTE and 5G networks, by utilizing transceivers and processors to manage service quality and policy information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If direct communication is implemented between different wireless communication systems (e.g., LTE and 5G), then service coverage and adaptability are improved, but complexity in managing and switching QoS parameters increases
Solution Approach 1:
The patent introduces a QoS parameter mapping mechanism that acts as an intermediary between different wireless communication systems. The mapping information, stored in a predetermined table, translates QoS parameters from one system (e.g., LTE PPPP/PPPR) to another system (e.g., 5G PQI), enabling seamless direct communication without requiring complex real-time negotiation or manual configuration of parameters across different systems.
Solution Approach 2:
The patent implements parameter changes by transforming QoS parameters between different communication systems through predefined mapping relationships. When switching between LTE and 5G systems, the terminal or base station retrieves corresponding parameter values from the mapping table, converting parameters like PPPP (ProSe Per-Packet Priority) and PPPR (ProSe Per-Packet Reliability) in LTE to their 5G equivalents (PQI - 5QI for PC5), thereby maintaining consistent service quality across system boundaries.
2Reliability
If QoS parameter switching is implemented for direct communication, then communication quality between systems is improved, but the difficulty of detecting and managing parameter mappings increases
Solution Approach 1:
The patent applies preliminary action by pre-configuring QoS parameter mapping tables before actual communication occurs. The mapping relationships between different systems' QoS parameters are established in advance and stored in the terminal or base station memory. This eliminates the need for complex real-time detection or negotiation during communication setup, as the parameter translations are already determined and readily available for immediate use.
3Speed
If mapping information is stored in terminals or base stations, then switching speed between systems is improved, but device memory requirements and complexity increase
Solution Approach 1:
The patent applies segmentation by dividing the QoS parameter mapping functionality into separate, manageable components. The mapping information is organized as structured data tables with clear row-column relationships, where each row represents a source parameter and each column represents a target parameter. This segmented organization allows efficient storage and quick retrieval without requiring complex processing, balancing memory usage with switching speed requirements.
Data Source
AI summary
The present disclosure relates to a 5th (5G) generation or pre-5G communication system for supporting a higher data transmission rate beyond a 4th (4G) generation communication system such as long term evolution (LTE). The present disclosure is to process policy and parameter information for providing a service in a wireless communication system, and an operating method of a base station may include obtaining mapping information of service quality related to direct communication between a first system and a second system, and switching between the quality of service of the first system and the quality of service of the second system using the mapping information.