Dual Relay Node Connection for Mobile Communications
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Solution Overview
Problem
In mobile communications networks, especially in small cell environments, interference between multiple base stations and relay nodes increases complexity and reduces network capacity, making it challenging to manage and optimize radio access network performance.
Innovation Solution
Implementing a dual relay node connection system, where a base station controls or a communications terminal dynamically activates and deactivates a second relay node based on traffic load and power consumption, using methods like carrier aggregation, separate communications resource pools, or different device-to-device identifiers to balance traffic and reduce interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If relay nodes are deployed to extend coverage and assist terminals, then network coverage and accessibility are improved, but interference between multiple base stations and relay nodes increases
Solution Approach 1:
The patent segments the network into macro cells and small cells with relay nodes, allowing differentiated resource allocation. Macro base stations and relay nodes operate with separated resource pools, reducing mutual interference while extending coverage area to reach remote terminals.
Solution Approach 2:
Different resource allocation strategies are applied locally: macro base stations use one set of resources while relay nodes use another set. This local differentiation reduces interference in specific geographic areas where relay nodes are deployed, while maintaining overall network coverage.
2Productivity
If multiple relay nodes are activated to balance traffic load, then network capacity and reliability are improved, but power consumption increases
Solution Approach 1:
The patent implements dynamic relay node activation where relay nodes are activated or deactivated based on real-time traffic conditions. When traffic load is high, additional relay nodes are activated to balance load and increase capacity. When traffic is low, relay nodes are deactivated to reduce power consumption, achieving adaptive optimization.
Solution Approach 2:
The system uses feedback mechanisms to monitor traffic load and power consumption levels, dynamically adjusting relay node activation states. This feedback loop ensures that relay nodes are activated only when necessary to maintain network capacity, avoiding unnecessary power consumption during low-traffic periods.
3Adaptability or versatility
If relay nodes are used to extend coverage, then accessibility is improved, but network complexity increases
Solution Approach 1:
Relay nodes serve as intermediaries between macro base stations and remote terminals. This intermediary architecture extends coverage to inaccessible areas while managing complexity by providing a standardized interface layer that simplifies terminal operations and abstracts the underlying network complexity.
Solution Approach 2:
Relay nodes are designed with multi-functionality, serving as both coverage extension points and traffic management nodes. They can dynamically switch between different operational modes and resource allocations, providing universal service that handles both coverage extension and load balancing, thereby managing overall network complexity.
4Device complexity
If traffic is concentrated on fewer relay nodes, then device complexity is reduced, but latency and delays increase
Solution Approach 1:
The patent segments traffic across multiple relay nodes rather than concentrating it on fewer nodes. This segmentation distributes the traffic load, reducing latency by providing parallel transmission paths while maintaining manageable device complexity through standardized segmentation protocols.
Solution Approach 2:
The system introduces an additional dimension for traffic routing by utilizing multiple relay nodes simultaneously. This dimensional expansion creates redundant paths for data transmission, reducing latency through parallel processing while maintaining device complexity management through coordinated multi-node operation.
Data Source
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AI summary
The present disclosure relates to a mobile communications system, method, controller, communications terminal, and relay node. The mobiles communications system comprises a base station, which is operatively coupled to a controller. The base station includes a transmitter and a receiver, the transmitter being configured to transmit signals via a wireless access interface to a plurality of relay nodes and to one or more communications terminals, and the receiver being configured to receive signals via the wireless access interface from the plurality of relay nodes and from the one or more communications terminals. The controller is configured to control a first relay node of the plurality relay nodes to transmit signals representing the data to one of the communications terminals received from the base station or to receive signals representing the data from the communications terminal for transmission to the base station, wherein, upon first predetermined conditions being met, to control a second relay node of the plurality of relay nodes to transmit signals representing the data to the communications terminal received from the base station or to receive signals representing the data from the communications terminal for transmission to the base station, and to control the communications terminal to transmit a first signal representing at least a first part of the data to the first relay node for transmission to the base station, and to transmit a second signal representing at least a second part of the data to the second relay node for transmission to the base station. Operating two relay nodes between the communications terminal and the base station as described in a dual connection offers advantages to the mobile communications system in terms of latency, power and capacity.