Cooperative Relay Network Coding for Wireless Resource Efficiency
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Solution Overview
Problem
In wireless communication systems, achieving high data transmission rates while minimizing resource usage and reducing error rates and communicable distance is challenging, especially when transmission power is limited, and the use of relay stations requires additional resource allocation.
Innovation Solution
Implementing a communication method that combines cooperative transmission and network coding schemes, where relay stations transmit network-coded data to base stations and mobile stations, efficiently using resources by combining direct and cooperative transmission gains.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If relay stations are used to improve data transmission rate, then data transmission rate is improved, but additional resources are required for transmission
Solution Approach 1:
The patent combines direct transmission and cooperative transmission through relay stations into a unified system. The mobile station receives signals through both direct paths from the base station and cooperative paths through relay stations, merging multiple transmission channels to achieve higher data rates without proportionally increasing resource consumption.
Solution Approach 2:
Relay stations perform multiple functions: they receive signals from base stations, process and amplify them, and transmit to mobile stations. Additionally, mobile stations act as cooperative relay nodes, transmitting received signals to other mobile stations, creating a multi-functional network where nodes serve both as endpoints and as transmission intermediaries.
2Quantity of substance
If transmission power is limited to maintain resource efficiency, then resource usage is optimized, but error rate increases and communicable distance decreases
Solution Approach 1:
Relay stations serve as intermediaries between base stations and mobile stations, receiving signals at low power levels and retransmitting them with appropriate power levels. This intermediary function allows signals to be transmitted over longer distances with lower error rates while maintaining overall resource efficiency, as the relay stations are strategically positioned to minimize total transmission power requirements.
Solution Approach 2:
The system maintains continuous transmission through coordinated direct and cooperative transmission paths. Mobile stations continuously receive signals through both direct and relayed paths, ensuring uninterrupted communication and reducing errors through signal diversity, while maintaining resource efficiency through coordinated power management across the network.
3Length of stationary object
If relay stations are deployed to extend communicable distance, then communicable distance is improved, but resource allocation complexity increases
Solution Approach 1:
The communication area is segmented into multiple zones with relay stations positioned at strategic locations. Each relay station serves a specific geographic segment, managing resources independently for its local area. This segmentation reduces overall resource allocation complexity by dividing the large-scale resource management problem into smaller, more manageable local resource allocation tasks.
Data Source
AI summary
A communication device and method using a cooperative transmission and network coding transmission scheme are provided. A mobile station (MS) includes a data receiving unit to receive network coding data transmitted from at least one relay station (RS) and downlink data transmitted from a base station (BS), and a data transmission unit to transmit uplink data to the BS and the at least one RS, wherein the BS transmits the downlink data to the at least one RS.