ProSe Relay Selection Rule for Wireless UE Connectivity
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Solution Overview
Problem
Current 3GPP standards do not provide a method for selecting the most appropriate ProSe relay when multiple candidates are available, leading to potential suboptimal connections for user equipment (UE) in wireless communication systems.
Innovation Solution
A method for user equipment (UE) to configure a relay selection rule, receive ProSe discovery messages from multiple relay candidates, evaluate these messages based on the rule, and select the most appropriate relay candidate for network connection, considering factors like reference signal received power, relay status, and service continuity support.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If 3GPP standards allow UE to connect to any available ProSe relay, then connectivity is established, but connection quality may be suboptimal
Solution Approach 1:
The patent applies parameter changes by introducing a relay selection rule that evaluates multiple parameters (RSRP, RSRQ, relay status, service continuity support) to select the optimal ProSe relay. This transforms the simple connectivity establishment into a parameter-based optimization process, improving connection quality while maintaining manageable complexity through structured evaluation criteria.
2Measurement precision
If UE evaluates multiple relay candidates, then best relay is selected, but evaluation complexity increases
Solution Approach 1:
The patent applies local quality by creating different evaluation criteria for different aspects of relay selection. The relay selection rule comprises specific sub-criteria (RSRP threshold, RSRQ threshold, relay status, service continuity support) that evaluate local qualities of each candidate. This structured approach improves selection accuracy while keeping the evaluation process organized and manageable.
3Manufacturing precision
If relay selection rule includes multiple criteria, then selection accuracy improves, but processing overhead increases
Solution Approach 1:
The patent applies preliminary action by pre-defining the relay selection rule with all evaluation criteria (RSRP threshold, RSRQ threshold, relay status requirements, service continuity support conditions) before the actual relay selection process. This preparation allows the UE to efficiently evaluate candidates against predetermined standards, improving selection precision while minimizing processing time during the actual selection moment.
Data Source
AI summary
Techniques are described for wireless communication. A method for wireless communication at a user equipment (UE) includes configuring a relay selection rule; receiving at least one discovery message from each of a plurality of proximity services (ProSe) relay candidates providing access to a network; evaluating the received discovery messages with respect to the relay selection rule; selecting a first ProSe relay candidate from the plurality of ProSe relay candidates based at least in part on the evaluating; and connecting to the network via the first ProSe relay candidate. A method for wireless communication at a ProSe relay candidate includes receiving, from a network, a ProSe Relay Indication (PRI); broadcasting at least one discovery message that includes the PRI; and receiving a relay connection request from a UE based at least in part on a compliance of the at least one discovery message with a relay selection rule of the UE.