Relay Control System ICIC Signaling for Donor Base Station Throughput
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Solution Overview
Problem
In wireless communication networks, the lack of awareness by donor base stations about Inter-Cell Interference Coordination (ICIC) usage between wireless relays and neighboring base stations leads to data overflow and increased re-transmission rates, as they continue to transmit data at standard rates without adjusting for ICIC, resulting in reduced network capacity.
Innovation Solution
A relay control system detects ICIC between wireless relays and neighboring base stations, identifies the donor base station serving the wireless relay, and signals this information to the donor base station, which then reduces the standard communication throughput to prevent data overflow by modifying resource block allocations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the donor base station continues to transmit data at standard rates without adjusting for ICIC, then the communication throughput is maintained, but data overflow and re-transmission rates increase
Solution Approach 1:
The relay control system implements a feedback mechanism by detecting ICIC usage between the wireless relay and neighboring base station, then signaling this information back to the donor base station. The donor base station uses this feedback to dynamically adjust its communication throughput, preventing data overflow while maintaining reliable transmission.
Solution Approach 2:
The system performs preliminary detection of ICIC usage by the relay control system before data overflow occurs. By signaling the donor base station in advance about upcoming ICIC events, the system enables proactive throughput adjustment rather than reactive correction after overflow happens.
2Reliability
If the donor base station reduces communication throughput in response to ICIC signaling, then data overflow is prevented, but network capacity is reduced
Solution Approach 1:
The communication throughput is made dynamic rather than static. The donor base station continuously monitors for ICIC signaling from the relay control system and adjusts throughput in real-time, increasing capacity when ICIC is not active and reducing it only when necessary to prevent overflow during ICIC events.
Solution Approach 2:
The system changes the throughput parameter dynamically based on ICIC detection. Rather than maintaining a fixed conservative throughput, the throughput parameter is adjusted up or down depending on whether ICIC conditions are detected, optimizing both reliability and capacity.
3Reliability
If the relay control system signals ICIC usage to the donor base station, then data overflow is prevented, but system complexity increases
Solution Approach 1:
The relay control system performs multiple functions: it manages relay operations, detects ICIC usage between relay and neighboring cells, and signals this information to the donor base station. By consolidating these functions in a single control entity, the system avoids adding separate complexity for each function while achieving reliable data transmission.
Data Source
AI summary
A donor base station in a wireless communication network exchanges first user data with a wireless relay using a standard communication throughput. A relay control system in the wireless communication network exchanges data with the wireless relay over the donor base station and the neighboring base station. The relay control system detects Inter-Cell Interference Coordination (ICIC) between the wireless relay and the neighboring base station and in response, the relay control system identifies the donor base station serving the wireless relay and signaling the donor base station of the ICIC between the wireless relay and the neighboring base station. The donor base station receives the signaling and reduces the standard communication throughput of the wireless relay. The donor base station then exchanges second user data with the wireless relay using the reduced communication throughput.