In-band Wireless Relay Control Plane Configuration and Monitoring
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently managing in-band wireless relay operations, including establishing control plane connections, identifying suitable user equipment (UE) for relay operations, and optimizing channel performance measurement and reporting, especially due to the introduction of additional congestion and interference from relay transmissions.
Innovation Solution
The implementation of techniques that allow a relay node to establish a control plane connection with a base station, receive configuration information, and monitor grants for multiple UEs, while also enabling UEs to modify channel estimation and reporting schedules based on relay communications, thereby improving channel performance and reducing interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If relay nodes perform in-band wireless relay operations to extend coverage and support additional UEs, then network coverage and connectivity are improved, but channel congestion and interference increase
Solution Approach 1:
The patent segments the relay operations into distinct phases (selection, configuration, activation) and separates control plane and user plane operations. This segmentation allows for better management of relay nodes and reduces channel congestion by organizing communications in a structured manner.
Solution Approach 2:
The patent implements preliminary actions by pre-configuring relay nodes with necessary parameters and identifiers before they become active. The base station prepares relay configurations, selects suitable relay nodes, and establishes control plane connections in advance, which reduces immediate channel congestion when relays are activated.
2Productivity
If relay nodes monitor grants for multiple UEs to improve relay operations, then relay efficiency is improved, but device complexity increases
Solution Approach 1:
The patent makes relay nodes multi-functional by enabling them to monitor grants for multiple UEs simultaneously. The relay node is configured with multiple UE identifiers and can handle control plane communications for different UEs through the same relay connection, improving efficiency without requiring separate relay nodes for each UE.
Solution Approach 2:
The base station acts as an intermediary by providing centralized configuration and control of relay nodes. The base station manages the complexity of monitoring multiple UEs by delivering relay configurations and grant information to the relay node, which then forwards relevant communications without the relay node needing to independently manage complex multi-UE protocols.
3Measurement precision
If UEs modify channel estimation measurement schedules to account for relay transmissions, then channel performance accuracy is improved, but measurement and reporting overhead increases
Solution Approach 1:
The patent implements dynamic channel estimation measurement schedules that adapt to relay transmission patterns. UEs modify their measurement timing and frequency based on detected relay communications, concentrating measurements during periods when relay interference is minimal or predictable, thereby maintaining accuracy while reducing overall measurement overhead.
Solution Approach 2:
The system employs feedback mechanisms where UEs detect relay transmissions and adjust their channel estimation schedules accordingly. This feedback loop allows UEs to learn relay transmission patterns and optimize their measurement timing, improving accuracy during critical periods while reducing measurements during known relay activity periods.
Data Source
AI summary
Methods, systems, and devices for wireless communications are described. A relay node may establish a control plane connection between the relay node and a base station, wherein establishing the control plane connection comprises receiving from the base station a first network identifier for the relay node. The relay node may receive, via the control plane connection, a relay configuration from the base station. The relay node may monitor grants associated with a set of one or more user equipment (UEs) based at least in part on the relay configuration, each UE comprising a network identifier that is different from the first network identifier. The relay node may relay communications between the base station and the set of one or more UEs according to the monitoring.