Wireless Terminal Interworking via Network Feedback
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Solution Overview
Problem
In wireless communication systems, heterogeneous networks face challenges in interworking due to the lack of knowledge about communication status and Quality of Service (QoS) between different networks, leading to inefficiencies when traffic is redirected to alleviate overload.
Innovation Solution
A method where a user equipment (UE) reports communication issues to a base station of a first network, which then provides reconfiguration parameters to resolve problems, such as changing bearers from a second network to the first network, ensuring efficient networking and guaranteed QoS.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a UE autonomously performs interworking according to predetermined rules, then the interworking operation is simple and fast, but the network cannot obtain knowledge about communication status and QoS to make informed decisions
Solution Approach 1:
The patent implements a feedback mechanism where the UE reports communication status and QoS information to the network. Specifically, the UE measures communication status (signal strength, quality) and QoS parameters (data rate, delay, packet loss) of the second network, then feeds back this information to the base station of the first network. This enables the network to make informed interworking decisions while maintaining the UE's autonomous operation capability.
Solution Approach 2:
The patent introduces the network (base station) as an intermediary that collects, processes, and utilizes communication status and QoS information from the UE. The base station acts as a mediator between the UE's autonomous interworking operations and the need for network-controlled decision-making, by receiving reports from the UE and using this information to provide reconfiguration parameters that guide the UE's interworking behavior.
2Reliability
If the network controls interworking decisions, then QoS can be guaranteed, but the network requires detailed information about communication status which is currently unavailable
Solution Approach 1:
The patent implements preliminary action by having the UE proactively measure and report communication status and QoS information to the network before the network needs to make interworking decisions. The UE continuously monitors the second network's performance and pre-feeds this information to the base station, so when QoS issues arise or interworking decisions are needed, the network already has the necessary information to act effectively.
Solution Approach 2:
The patent establishes a feedback loop where the UE reports communication status and QoS parameters to the base station, enabling the network to maintain awareness of the second network's condition. This feedback mechanism ensures the network has real-time or near-real-time information about communication status, allowing it to make reliable QoS-guaranteed interworking decisions.
3Productivity
If traffic is redirected to another access network to handle overload, then network efficiency improves, but the QoS may not be satisfied if the target network's quality is unknown
Solution Approach 1:
The patent uses feedback mechanisms where the UE reports communication status and QoS information of the target (second) network to the source network before traffic redirection occurs. The base station receives these reports and uses the information to determine whether the second network can satisfy the required QoS. This feedback enables informed traffic redirection decisions that balance network efficiency improvement with QoS satisfaction.
Solution Approach 2:
The patent implements preliminary action by having the UE measure and report the second network's QoS capabilities before the network redirects traffic. The base station uses this advance information to evaluate whether traffic redirection will maintain QoS requirements, preventing redirection to networks that cannot satisfy service quality demands while still enabling efficiency improvements through strategic traffic offloading.
Data Source
AI summary
Provided are a method for operating a terminal for supporting interworking in a wireless communication system and a terminal using the method. The method is characterized by: reporting, to a base station of a first network, a problem which has occurred during communication with a second network; and receiving, from the base station of the first network, reconfiguration parameters for resolving the problem.