ProSe Relay Control Method for Wireless Group Communication
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Solution Overview
Problem
There is a lack of a detailed solution for supporting and controlling Proximity Service (ProSe) in wireless communication systems, specifically for acquiring position information in ProSe-based communication mechanisms.
Innovation Solution
A method is introduced where a first user equipment (UE) determines a relay through ProSe by receiving traffic from a second UE, identifying whether the traffic is bound to group communication, and configuring a relay relation with the determined relay UE, allowing for efficient communication by preventing waste of time/frequency resources and enabling simultaneous discovery and data reception.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a first UE performs discovery operation to find relay UE through traditional methods, then relay connection can be established, but time and frequency resources are wasted
Solution Approach 1:
The patent applies preliminary action by having the second UE (relay UE) proactively transmit information about group communication binding before the first UE needs to discover it. The second UE includes indicators in its uplink transmissions showing that traffic is bound to group communication, allowing the first UE to immediately identify it as a suitable relay without performing traditional discovery operations. This resolves the contradiction by eliminating the time-consuming discovery process while ensuring reliable relay connection establishment.
2Ease of operation
If a first UE performs traditional discovery procedure to determine relay UE, then relay relationship can be configured, but frequency resources are consumed
Solution Approach 1:
The patent applies self-service by enabling the second UE to automatically advertise its capability to relay group communication traffic through included indicators in its transmissions. The first UE simply needs to detect these indicators and automatically configure the relay relationship without complex discovery procedures or additional signaling. This resolves the contradiction by making the relay configuration process simple and resource-efficient, as the relay UE essentially configures itself as a visible option for group communication relaying.
3Adaptability or versatility
If relay UE transmits traffic not bound to group communication, then general communication is maintained, but first UE cannot identify it as relay for group communication
Solution Approach 1:
The patent applies local quality by introducing specific indicators within the traffic stream that locally mark portions of traffic as being bound to group communication. These indicators are embedded in the uplink transmissions of the second UE, creating a localized signature that allows the first UE to identify relay-capable traffic without affecting the overall versatility of the communication system. The indicators can be selectively applied only when group communication binding exists, maintaining adaptability while providing identification capability.
Data Source
AI summary
The present invention relates to a method and a device by which first user equipment (UE) that is located out of the range of a group communication service determines a relay through a proximity service (ProSe) in a wireless communication system. Particularly, the method comprises the steps of: receiving traffic transmitted by second UE which already relays group communication; determining whether the traffic is information bound to group communication; determining relay UE by using a discovery procedure for a relay for the group communication, when the traffic is not recognized as the information bound to the group communication; and determining the second UE as the relay UE for the group communication, when the traffic is recognized as the information bound to the group communication.