Relay UE ProSe Control via Dynamic State Monitoring
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Solution Overview
Problem
Current wireless communication systems lack a detailed mechanism for controlling Proximity Service (ProSe) based relays, which can lead to service degradation in Device-to-Device (D2D) communication scenarios.
Innovation Solution
A method for relay control in wireless communication systems, where a relay User Equipment (UE) announces its capabilities and adjusts its relay operations based on state information and Packet Data Network (PDN) connection parameters, such as maximum number of relayed UEs, traffic, and battery level, to prevent service degradation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If relay UE performs relaying for more UEs to increase network coverage and capacity, then network accommodation capacity increases, but service degradation occurs due to excessive relay load
Solution Approach 1:
The patent implements dynamic relay control by continuously monitoring relay UE state information (battery level, processing capability) and PDN connection parameters (number of active connections, traffic volume). The relay UE dynamically adjusts its relaying capacity based on real-time conditions, increasing when resources are abundant and decreasing when constraints are detected, thus resolving the contradiction between maximizing network capacity and maintaining service quality.
Solution Approach 2:
The patent establishes a feedback mechanism where relay UEs report their state information and PDN connection parameters to the network, and the network responds with relay control instructions. This closed-loop feedback system enables the network to optimize relay utilization while preventing service degradation by adjusting relay parameters based on actual system conditions and performance metrics.
2Area of stationary object
If relay UE increases relaying capacity to expand cell coverage, then cell coverage expands, but relay UE power consumption increases
Solution Approach 1:
The patent changes operational parameters of the relay UE based on battery level and processing capability. When battery level is high and processing capability is sufficient, the relay UE operates at higher capacity to expand cell coverage. When battery level drops or processing capability is constrained, the relay UE reduces its relaying capacity, thereby extending coverage area while managing power consumption through parameter adaptation.
Solution Approach 2:
The relay UE dynamically adjusts its relaying capacity based on real-time monitoring of battery level and processing capability. The system transitions between different operational states (high capacity relaying vs. low capacity relaying) based on energy availability, enabling the network to expand coverage when energy permits while conserving battery power when constraints are detected.
3Productivity
If relay UE manages more PDN connections to support more relayed UEs, then network accommodation capacity increases, but relay UE processing capability is overwhelmed
Solution Approach 1:
The patent implements dynamic adjustment of PDN connection management based on relay UE processing capability. The relay UE monitors its processing load and adjusts the number of actively managed PDN connections accordingly. When processing capability is high, the relay UE can manage more connections to increase network accommodation capacity. When processing load becomes excessive, the relay UE reduces the number of active PDN connections, preventing system overload while optimizing network utilization.
Data Source
AI summary
The present invention relates to a method and a device for controlling a relay of relay user equipment (UE) in a wireless communication system. Specifically, the method comprises the steps of: announcing information on whether the relay UE can be relayed; and controlling the relay by comparing updated information with reference information according to a new relay request, wherein the reference information is set to be changed on the basis of state information of the relay UE and/or a packet data network (PDN) connection related to the relay.