New hybrid frequency reuse method for packet loss minimization in LTE network

Area of Science:

• Mobile Communications
• Wireless Networking
• Signal Processing

Background:

• Inter-cell interference (ICI) is a major cause of packet loss in Long Term Evolution (LTE) systems.
• Existing methods like Soft Frequency Reuse (SFR) and Fractional Frequency Reuse aim to mitigate ICI.
• Packet loss negatively impacts critical applications such as Intelligent Transportation Systems (ITS).

Purpose of the Study:

• To investigate and minimize packet loss caused by ICI in LTE mobile systems.
• To evaluate the effectiveness of the popular Soft Frequency Reuse (SFR) method.
• To propose and assess a novel hybrid frequency reuse method for improved performance.

Main Methods:

• Examined the performance of Soft Frequency Reuse (SFR) by measuring packet loss.
• Implemented a new hybrid frequency reuse method with expanded total system bandwidth.
• Compared the packet loss of the hybrid method against SFR across different frequency bands.
• Evaluated the proposed method's impact on Intelligent Transportation Systems (ITS) traffic management.

Main Results:

• The new hybrid frequency reuse method demonstrated noticeable improvements in reducing packet loss compared to SFR.
• Significant packet loss reduction, up to 49.4% in certain frequency bands, was achieved with the hybrid method.
• The hybrid method effectively utilizes additional sub-carriers to combat ICI.

Conclusions:

• The proposed hybrid frequency reuse method offers a superior solution for mitigating ICI and reducing packet loss in LTE systems.
• This method provides substantial performance gains, particularly beneficial for bandwidth-intensive applications like ITS.
• Further research into hybrid frequency reuse strategies can lead to more robust and efficient mobile communication systems.