Relay UE Inactivity Timer for ProSe Direct Communication
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Solution Overview
Problem
Current wireless communication systems face inefficiencies in radio resource utilization and power consumption during ProSe communication, particularly in direct communication between User Equipment (UE) devices, leading to unnecessary signaling and resource waste.
Innovation Solution
The implementation of a method that reduces unnecessary signaling and power consumption by introducing a relay UE, which enhances communication efficiency through optimized direct communication procedures between UEs, including the use of a relay UE-to-network relay for ProSe communication, thereby improving the overall communication scheme.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If direct communication is performed between UEs using existing ProSe procedures, then communication between terminals is enabled, but unnecessary signaling occurs leading to radio resource waste and increased power consumption
Solution Approach 1:
The patent extracts and removes unnecessary signaling steps from the existing ProSe direct communication procedure. Specifically, it eliminates redundant message exchanges between UEs and the network during direct communication setup and maintenance, keeping only the essential signaling required for connection establishment and management.
Solution Approach 2:
The patent applies partial action by implementing selective signaling optimization - not all signaling is removed, but only the excessive and unnecessary portions are eliminated while maintaining the minimal required signaling for reliable direct communication operation.
2Reliability
If direct communication is performed between UEs using existing ProSe procedures, then communication between terminals is enabled, but radio resource utilization is inefficient due to unnecessary signaling
Solution Approach 1:
The patent extracts and removes redundant signaling messages from the direct communication procedure, eliminating unnecessary radio resource consumption while preserving the essential communication functionality between UEs.
Solution Approach 2:
The patent discards unnecessary signaling steps that do not contribute to the core direct communication function, recovering radio resources for more useful purposes while maintaining communication reliability.
3Reliability
If traditional signaling procedures are used for direct communication setup, then communication establishment is achieved, but the number of signaling messages increases complexity and resource usage
Solution Approach 1:
The patent removes redundant signaling steps from the traditional ProSe procedure, reducing the total number of messages exchanged during direct communication setup and thereby simplifying the overall procedure while maintaining reliable connection establishment.
Solution Approach 2:
The patent inverts the traditional approach by having the receiving UE initiate the direct communication response rather than waiting for multiple back-and-forth signaling exchanges, thereby reducing procedure complexity and message count.
Data Source
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AI summary
Disclosed are a method for direct communication and a rely UE, the method comprising: in the process of configuring a direct communication with a remote UE, receiving, from the remote UE, a direct communication request message comprising information on a maximum inactivity period; starting a timer corresponding to the maximum inactivity period when data transmission or signaling via the direct connection with the remote UE is completed; and if no message is received from the remote UE by the time the timer expires, locally releasing the direct connection with the remote UE.