Ad hoc bandwidth requests and power conservation in 5G wireless networks with tiny cells

Area of Science:

• Wireless Communication Networks
• Telecommunications Engineering
• Internet of Things (IoT)

Background:

• Fifth Generation (5G) wireless networks aim to enhance spectral efficiency and manage power consumption for massive Internet of Things (IoT) deployments.
• Existing contention-based bandwidth request and power management mechanisms in 5G networks can lead to increased access delay when combined.
• This delay arises from suboptimal contention window selection during backoff and inappropriate listen interval parameters in power management.

Purpose of the Study:

• To investigate the suitability of message and code-based mechanisms for optimizing bandwidth requests and power management in 5G wireless relay networks.
• To address the tradeoff between spectral efficiency, power consumption, and access delay in 5G IoT networks.
• To propose and validate enhanced mechanisms for both single-hop and two-hop 5G wireless relay scenarios.

Main Methods:

• Investigated message and code-based mechanisms for contention window setting in single-hop 5G networks.
• Implemented a base station-assisted backoff strategy combined with a cyclic binary exponent power saving mechanism.
• Developed a multi-layered bandwidth request approach with a power saving class mechanism for two-hop 5G networks.
• Conducted simulations under high mobility conditions to evaluate the proposed mechanisms.

Main Results:

• The proposed message and code-based mechanisms demonstrate improved performance in 5G wireless relay networks.
• Optimized contention window selection and power management strategies mitigate increased access delay.
• Simulations validate the effectiveness of the proposed mechanisms, particularly under high mobility scenarios.

Conclusions:

• Message and code-based mechanisms offer a viable solution to the access delay issue in combined bandwidth request and power management for 5G networks.
• The proposed strategies are effective in both single-hop and two-hop 5G wireless relay network configurations.
• The findings contribute to more efficient and reliable 5G network operation for massive IoT device support.