eRelay UE Paging Relay Arrangement for Cell Edge Coverage
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently managing handovers and relay operations in cellular networks, particularly for devices at the cell edge, which can lead to performance degradation and capacity issues.
Innovation Solution
The implementation of a method where a User Equipment (UE) can operate as an eRelay UE to establish a relay arrangement with an Evolved Node-B (eNB), using PC5 request messages and eRemote UE ID notifications to facilitate efficient paging and data transmission between the eRelay UE and the eRemote UE, enhancing network performance and capacity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a relay arrangement is established between eRelay UE and eRemote UE, then network coverage and capacity for cell edge devices are improved, but device complexity and handover management complexity increase
Solution Approach 1:
The eRelay UE acts as an intermediary device between the eNB and eRemote UE, establishing a relay arrangement that includes a first link between the eRelay UE and eNB, and a second link between the eRelay UE and eRemote UE. This mediator approach enables cell edge devices to access the network through intermediate nodes, improving coverage without requiring direct connection to the base station.
Solution Approach 2:
The communication path is segmented into multiple links: a first link between eRelay UE and eNB, and a second link between eRelay UE and eRemote UE. This segmentation allows independent management of each link and enables flexible handover operations, reducing the complexity of managing the entire relay arrangement as a single unit.
2Productivity
If relay operations are implemented to enhance cell edge performance, then network capacity is improved, but handover management complexity increases
Solution Approach 1:
The patent implements dynamic handover management where the network can dynamically switch between different relay UEs based on current network conditions. The handover procedure allows transitioning a relay arrangement from one eRelay UE to another, enabling adaptive resource allocation and load balancing to manage complexity while maintaining high capacity.
Solution Approach 2:
The handover decision is based on feedback information including the first link quality indicator and second link quality indicator. This feedback mechanism enables the network to monitor relay performance and make informed handover decisions, simplifying the management of multiple relay arrangements through automated performance-based selection.
3Productivity
If paging procedures are optimized for relay arrangements, then paging efficiency is improved, but signaling complexity increases
Solution Approach 1:
The patent employs copying of paging information through the relay arrangement. When a UE is paged, the paging message is copied and transmitted through the relay links to reach the target UE. This copying approach enables efficient paging in relay scenarios without requiring separate paging procedures for each link, reducing signaling complexity while maintaining paging effectiveness.
Data Source
AI summary
Embodiments of a User Equipment (UE), an Evolved Node-B (eNB) and methods for communication are generally described herein. An UE may be configurable to operate as an eRelay UE. The eRelay UE may be configured to operate as a relay between an eNB and an eRemote UE. The eRelay UE may receive, from the eRemote UE, a message that includes an identifier of the eRemote UE for paging of the eRemote UE. The eRelay UE may determine whether a first paging message from the eNB includes the identifier of the eRemote UE. If it is determined that the first paging message includes the identifier of the eRemote UE, the eRelay UE may transmit, to the eRemote UE, a second paging message to page the eRemote UE. The second paging message includes the identifier of the eRemote UE.