Relay Terminal Apparatus ProSe Communication Control
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Solution Overview
Problem
In ProSe, there is no established method for efficiently establishing a communication path between a UE and a UE with relay functionality, making it difficult for a UE without base station connectivity to connect to the core network, and there is a need for efficient detection of relay UEs with minimal power consumption and control information transmission.
Innovation Solution
A communication control method that involves transmitting a PDN connection request to the core network, receiving an APN and IP address, broadcasting notification information with service identification, selecting a relay terminal apparatus based on received information, and establishing a PDN connection to enable data transmission between UEs and the core network.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a UE without base station connectivity establishes a direct communication path with a relay UE, then the UE can perform direct communication with another UE, but it is difficult for the UE to establish connectivity with the core network
Solution Approach 1:
The patent introduces a relay UE as an intermediary device that has both direct communication capability and core network connectivity. The relay UE acts as a mediator between UEs without base station connectivity and the core network, enabling indirect access to network services while maintaining direct communication benefits.
Solution Approach 2:
The patent segments the communication function into two parts: direct communication path establishment between UEs, and separate core network connectivity management through relay UEs. This allows independent optimization of each function without compromising the other.
2Difficulty of detecting and measuring
If the UE detects relay UEs by transmitting and receiving control information, then the relay function can be identified, but power consumption increases
Solution Approach 1:
The patent implements periodic broadcasting of relay capability information by relay UEs at predetermined intervals. This allows detecting UEs to identify available relay services without continuous active transmission, significantly reducing power consumption while maintaining detection capability.
Solution Approach 2:
The relay UE automatically broadcasts its relay capability information without requiring request-response interactions with detecting UEs. This self-service approach eliminates the need for continuous control information exchange, reducing overall system power consumption.
3Adaptability or versatility
If multiple UEs connect to the same relay UE, then the relay function can serve multiple users, but the relay processing load increases
Solution Approach 1:
The patent segments the relay function into multiple independent relay UEs rather than concentrating all relay traffic on a single device. This distribution of relay functions across multiple nodes reduces the processing load on each individual relay UE while maintaining multi-user service capability.
Solution Approach 2:
The patent enables dynamic selection of relay UEs based on current load conditions and service requirements. detecting UEs can choose from multiple available relay UEs, and relay UEs can dynamically adjust their capacity allocation, optimizing the balance between multi-user support and individual processing loads.
Data Source
AI summary
To provide a mobile communication system that efficiently establishes a communication path in order for a terminal apparatus to be connected to a network via a relay terminal apparatus positioned in proximity to perform the transmission and reception of data.Means for detecting for a relay terminal positioned in proximity and means for selecting the relay terminal apparatus are provided. A connection procedure of suppressing unnecessary control information and suppressing a processing load of the relay terminal apparatus is performed.