Relay Station Resource Allocation for Interference Mitigation
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Solution Overview
Problem
Radio communication systems face performance limitations due to inter-channel interference, and existing solutions like CoMP are costly to deploy and maintain.
Innovation Solution
The integration of (m,n)-relaying into 3GPP LTE-Advanced networks, where a relay station serves multiple base stations and mobile stations using shared communication resources, allowing for efficient data transmission and interference mitigation without high-capacity links between base stations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If CoMP (Coordinated Multi-Point) is deployed to mitigate inter-channel interference, then interference mitigation performance is improved, but deployment cost and system complexity increase
Solution Approach 1:
The patent introduces a relay station as an intermediary node between base stations and mobile stations. The relay station receives data from multiple base stations and forwards it to mobile stations, enabling coordinated multi-point transmission without requiring direct high-capacity links between base stations. This mediator approach achieves interference mitigation while reducing deployment complexity and cost.
Solution Approach 2:
The patent segments the communication path into two hops: base station to relay station, and relay station to mobile station. This segmentation allows the system to avoid the need for complex direct inter-base-station coordination and high-capacity backhaul links, thereby reducing deployment cost while maintaining the benefits of coordinated transmission.
2Object-affected harmful factors
If high-capacity links are established between base stations to enable CoMP, then interference mitigation performance is improved, but infrastructure cost increases
Solution Approach 1:
The relay station serves as a mediator that eliminates the need for direct high-capacity links between base stations. By routing data through the relay station, the system achieves coordinated multi-point transmission benefits without requiring expensive infrastructure for inter-base-station connections.
Solution Approach 2:
The patent employs relay stations that can be deployed more cheaply and flexibly compared to establishing permanent high-capacity links between all base stations. The relay station approach provides a cost-effective alternative that achieves the necessary coordination for interference mitigation.
3Productivity
If relay stations share communication resources among multiple base stations and mobile stations, then resource utilization efficiency is improved, but resource allocation complexity increases
Solution Approach 1:
The patent merges the resource allocation functions at the relay station, which consolidates resource management for multiple base stations and mobile stations. The relay station receives data from multiple base stations and allocates resources to multiple mobile stations, simplifying the overall resource allocation process compared to distributed coordination among all base stations.
Solution Approach 2:
The relay station performs multiple functions including receiving data from multiple base stations, buffering data, allocating communication resources to multiple mobile stations, and forwarding data. This multi-functional node improves resource utilization efficiency while centralizing control to manage allocation complexity.
Data Source
AI summary
In one embodiment, a mobile communication system is provided comprising a base station, a relay station, and a mobile station, a determiner configured to determine the distance between the mobile station and the base station or between the mobile station and the relay station, a decider configured to decide whether data transmission between the base station and the mobile station is carried out in a first relaying mode or a second relaying mode based on the determined distance and a controller configured to control the mobile communication system based on the result of the decision by the decider.