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Ultra-Reliable Communication for Critical Machine Type Communication via CRAN-Enabled Multi-Connectivity Diversity
Binod Kharel1, Onel Luis Alcaraz López1, Hirley Alves1
1Centre for Wireless Communications, Faculty of Information Technology and Electrical Engineering, University of Oulu, 90014 Oulu, Finland.
Sensors (Basel, Switzerland)
|December 10, 2021
Summary
This study enhances ultra-reliable communication for mission-critical machine-type networks using edge-enabled cloud radio access networks. Coordinated multi-point transmission with diversity schemes demonstrates feasible ultra-reliable communication.
Area of Science:
- Telecommunications Engineering
- Wireless Communication Systems
- Network Architecture
Background:
- Ultra-reliable communication is essential for mission-critical machine-type communication networks.
- Edge-enabled cloud radio access networks (C-RAN) offer a promising architecture for enhanced network capabilities.
- Interference-limited downlink cellular networks present challenges for achieving high reliability.
Purpose of the Study:
- To propose and analyze coordinated multi-point (CoMP) transmission schemes for edge-enabled C-RAN.
- To achieve ultra-reliable communication by leveraging diversity mechanisms in interference-limited environments.
- To evaluate the performance of different diversity strategies, including silencing, transmit antenna selection, and maximum ratio transmission.
Main Methods:
- Derivation of exact closed-form expressions for outage probabilities and signal-to-interference ratio (SIR) expected values.
- Formulation of rate control and energy efficiency under strict reliability constraints.
- Analysis of the impact of cooperative communication on system sum throughput and the throughput-reliability trade-off.
Main Results:
- Demonstrated feasibility of ultra-reliable communication through diversity schemes with remote radio head (RRH) cooperation.
- Quantified outage probabilities and SIR performance for various diversity strategies.
- Evaluated rate control, energy efficiency, and system throughput under reliability constraints.
Conclusions:
- Coordinated multi-point transmission with diversity schemes is a viable approach for ultra-reliable communication in edge-enabled C-RAN.
- Cooperation among RRHs significantly enhances system performance and enables reliable operation for mission-critical applications.
- The proposed methods provide a framework for optimizing resource usage and performance in future wireless networks.
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