Multi-RAT User Equipment Simultaneous Access Protocol
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Solution Overview
Problem
Multi-RAT user equipment is unable to simultaneously access and transmit/receive data via different radio access technologies, limiting network selection and efficiency in wireless communication systems.
Innovation Solution
A method and apparatus that enable user equipment and base stations to support simultaneous signal transmission and reception using multiple radio access technologies by exchanging messages to determine access capabilities and measurement results, allowing for efficient selection of heterogeneous networks and traffic routing between different RATs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a multi-RAT user equipment uses switching-based multi-RAT technology to access different radio access technologies, then the user equipment can access multiple RATs sequentially, but the user equipment is unable to simultaneously transmit and receive data via different RATs
Solution Approach 1:
The patent segments the data transmission and reception processes by establishing separate protocol stacks for different RATs (e.g., LTE and WLAN). Each protocol stack operates independently, allowing simultaneous data transmission and reception through different RATs without interference. The segmentation enables the UE to maintain multiple active connections with distinct protocol handling for each RAT.
2Ease of operation
If a legacy multi-RAT technology uses switching-based approach to access different RATs, then the connection can be established for a specific RAT, but it is difficult to select a RAT appropriate for a flow characteristic
Solution Approach 1:
The patent performs preliminary actions by establishing multiple protocol stacks and maintaining readiness for multiple RATs before actual data transmission. The system pre-configures the capability to handle different flow characteristics by having protocol stacks ready for various RATs, enabling rapid and appropriate RAT selection based on real-time flow requirements without disrupting ongoing transmissions.
Data Source
AI summary
A method of supporting communication using two or more heterogeneous radio access technologies (RAT) may include receiving, from a first communication network supporting a first RAT, a first message requesting notification as to whether access to a second communication network that simultaneously support the first communication network and a second RAT is supported; transmitting, to the base station in the first communication network, a second message including an indicator indicating whether to support simultaneous access to the first and second communication networks in response to the first message; and receiving a trigger condition for reporting a measurement result for the second communication network from the base station in the first communication network, when the indicator indicates that the terminal is able to access the first and second communication networks.