STRATEGIES FOR IMPROVING AVAILABILITY IN RADIO COMMUNICATION SYSTEMS FOR REMOTE, FRONTIER, AND OUTER ISLAND REGIONS
Muhammad Malik Nurrohman
Department of Electrical Engineering, Study Program of Digital Telecommunication Networks, State Polytechnic of Malang
Email:m2p3tbf1k@gmail.com
1. Introduction
In today’s rapidly evolving digital era, the demand for stable and reliable communication is increasing not only in urban centers but also in remote locations. Indonesia’s frontier, outermost, and underdeveloped regions face distinct challenges in obtaining access to communication services. Harsh geographical terrains, inadequate infrastructure, and a lack of skilled technical personnel have contributed to significant information gaps in these isolated areas.
Radio communication systems are one of the ideal solutions to bridge these limitations. However, in order to function properly, these systems require high availability or service availability. Without adequate availability, communication functions can be disrupted, impacting public services, education, and even the local economy.
1.2 Problem Statement
The availability of radio communication systems is a crucial aspect for smooth communication, especially in remote, frontier, and outer regions with limited infrastructure access. However, in practice, various issues arise that lead to low system availability in these areas. The primary focus is on identifying the factors causing this low availability. Are these challenges rooted in geography, infrastructure, social culture, or all of the above?
In addition, it is essential to explore how strategies such as the adoption of modern communication technologies and the reinforcement of network infrastructure can be implemented effectively to overcome these challenges. Equally vital are non-technical approaches, including training local human resources, empowering communities, and formulating supportive government policies, all of which should be integral to efforts to enhance service availability.
More critically, there must be an understanding of how these strategies can generate lasting and tangible benefits for people living in remote, outermost, and frontier areas. Do these implemented solutions effectively reduce system outages, enhance user satisfaction, and promote both economic growth and social development in these regions?
1.3 Objectives
This article seeks to explore comprehensively the range of issues related to availability within radio communication systems, particularly in Indonesia’s remote, frontier, and outermost regions. The primary goal is to identify and explain the numerous barriers and difficulties that may influence the availability level of such systems. These challenges consist of technical factors like unstable electricity supply, signal disruptions, and hardware limitations, as well as non-technical issues such as a shortage of skilled workers, limited government involvement, and challenging geographical conditions.
In addition, this paper aims to assess a variety of both technological and non-technological strategies that could enhance communication system availability. Technological strategies might include deploying satellite-based mesh radio networks and utilizing renewable energy solutions. On the other hand, non-technological efforts may involve training for local residents, empowering local institutions, and implementing supportive government policies.
2. Theoretical Basis
2.1 Definition of availability
Availability is a critical component of system performance, reflecting how consistently a system can function without major interruptions. In the case of radio communication systems operating in remote, frontier, and outermost regions, availability is especially vital, as service failures can disconnect communities from vital information, essential public services, and emergency assistance.
Mathematically, availability can be calculated using the following formula:
Description:
· MTBF (Mean Time Between Failures): represents the average duration between two system breakdowns.
· MTTR (Mean Time To Repair): refers to the average amount of time required to fix the system after a failure has occurred.
A higher MTBF value combined with a lower MTTR leads to improved system availability. This indicates the system is capable of running longer and more reliably, with minimal downtime. To assess the consequences of service interruptions, the concept of unavailability is applied:
\[A = \frac{MTTR}{MTBF + MTTR}\]
This value reflects the percentage of time the system is inoperable due to failures.
2.2 Radio Communication Systems
Radio communication systems are a type of telecommunications technology that utilizes electromagnetic waves to wirelessly transmit information. This form of communication is especially vital in disadvantaged, frontier, and outermost regions, as it can serve areas where traditional wired networks are impractical or unavailable. Below are the common types of radio communication systems in use:
· HF (High Frequency): Effective over long distances, making it ideal for inter-island communication where cable infrastructure is lacking.
· VHF (Very High Frequency) / UHF (Ultra High Frequency): Best suited for regions with moderate terrain, such as hilly or mountainous areas.
· LEO (Low Earth Orbit) Satellites: These low-orbit satellites provide low-latency connections and broad coverage, making them ideal for highly remote areas such as Papua’s interior or small isolated islands.
2.3 Context of Remote, Frontier, and Outlying Regions
Indonesia disadvantaged, frontier, and outermost regions often face numerous constraints in terms of geography, social conditions, and infrastructure. These regions typically exhibit the following characteristics:
· Geographical: Located in remote areas with minimal road access and difficult terrain that hampers land transportation.
· Energy: Lack of electricity from the national grid (PLN). Most areas rely on diesel generators, solar panels, or other local alternative energy sources that are generally unstable.
· Weather: Many of these regions experience extreme weather conditions that can damage communication infrastructure. High winds, heavy rainfall, and frequent lightning strikes often disrupt antennas and transmission systems.
· Human Resources: A shortage of skilled local technicians leads to longer repair times, as specialists often need to be brought in from outside the area.
2.4 System Redundancy
To ensure high availability, implementing a redundancy system is strongly recommended. Redundancy refers to the addition of backup components so that the system can continue to operate even if one component fails. In radio communication systems, redundancy may include multiple communication channels, backup power sources, and automated monitoring mechanisms.
The availability formula for redundant (parallel) systems is:
\[A_{\text{parallel}} = 1 - (1 - X)^N \]
Description:
· X: The availability rate of each individual component.
· N: The number of identical backup components.
This formula illustrates that the more components are installed in parallel, the greater the likelihood that the system will remain operational, even if one or more components experience failure.
2.5 Channel Reliability
In radio communication systems, Channel Reliability is a critical metric used to evaluate the efficiency of data transmission. The Channel Reliability (ChR) value can be determined using the following formula:
\[ChR = \frac{T_a}{T_s} \times 100\%\]
Description:
· Tβ: The duration of channel availability and usage.
· Tβ: The total uptime or operational time of the system.
A higher ChR value indicates that the channel is more dependable in maintaining stable and interference-free communication. In disadvantaged, frontier, and outermost regions, unreliable communication channels can worsen information isolation and diminish public confidence in the existing communication infrastructure.
3. Challenges and Risk Analysis
a. Natural and Geographical Challenges
Remote, Frontier, and Outer regions typically have complex terrain such as mountains, dense forests, and isolated islands. This not only slows down equipment distribution but also increases the risk of antenna and cable damage due to earthquakes, landslides, or strong winds. These extreme conditions can cause prolonged communication system downtime, directly increasing the Mean Time to Repair (MTTR) and reducing Availability.
b. Energy and Infrastructure
Limited electrical infrastructure makes radio communication systems in remote, frontier, and outer regions dependent on generators. However, fuel distribution often faces logistical disruptions, especially during heavy rainy seasons or when roads are blocked, prolonging operational downtime (high MTTR). This exacerbates declining Availability.
c. Human Resources and Institutional Factors
The shortage of technicians capable of responding to local disruptions is a critical obstacle. In remote areas, technicians are often difficult to access or unavailable 24/7, preventing timely system repairs.
d. Technological Limitations
Many systems in disadvantaged, frontier, and outermost regions still rely on outdated equipment that is highly susceptible to failure. The absence of backup mechanisms (redundancy) and real-time monitoring tools limits the system’s ability to detect and mitigate faults before they cause prolonged outages.
4. Availability Improvement Strategies
4.1 Technology Strategies
a. Mesh Networking
A mesh network topology allows each node (e.g., homes, schools, health centers) to act as both a transmitter and a receiver. If one node fails, data is automatically redirected to another active node. This significantly reduces the likelihood of communication disruption due to a single point of failure.
The main advantages of this system are scalability and resilience. In remote areas with uneven population distribution, this mesh system is suitable because it does not rely on a single central point.
Figure 1. Mesh network topology in rural areas, connecting several houses and gateways.
b. LEO Satellites
Low Earth Orbit (LEO) satellites have low latency and more flexible coverage. In the context of (Remote, Frontier, and Outlying), LEO satellites can reach areas that cannot be served by HF or VHF, such as steep valleys or remote small islands. LEO also enables faster and more stable data synchronization.
c. System Redundancy
Redundancy is an important strategy for improving availability. In the context of radio communication systems, this includes the use of backup devices—whether transmitters, antennas, or power sources. By implementing a parallel scheme, if one component fails, the backup component automatically activates without disrupting operations.
Figure 2. Simple redundancy system
Example of implementation: two active-passive antennas or two HF and satellite communication channels running simultaneously.
d. Renewable Energy
Dependence on fuel-based generators in remote, frontier, and outlying areas is often inefficient due to inconsistent supply logistics. A more dependable and eco-friendly alternative is the use of solar power. Solar panels, when paired with lithium batteries, can offer a reliable and maintenance-free energy supply for communication devices. Additionally, the integration of smart power controllers helps optimize power consumption and storage, while extending the overall lifespan of the system.
e. IoT-Based Monitoring
Monitoring systems integrated with the Internet of Things (IoT) allow real-time observation of communication equipment performance. Metrics such as device temperature, voltage levels, and signal strength can be transmitted to a monitoring center. With this insight, maintenance teams can anticipate failures in advance (preventive maintenance), significantly lowering the Mean Time to Repair (MTTR).
4.2 Non-Technological Strategies
a. Training and Empowerment of Local Human Resources
The lack of professional technicians in remote, frontier, and outlying areas is a cause of long repair wait times. The solution is a basic technical training program for local residents. This training can include:
· Cable and connector inspection
· Antenna calibration
· Battery and standard module replacement
With local operators, minor issues can be addressed more quickly without having to wait for assistance from the central office.
b. Multi-Stakeholder Collaboration
The central government, local governments, private sector, and social institutions must also form long-term collaborations. The government's role is to regulate policies and incentives, the private sector can provide technology and funding, while NGOs can drive direct implementation in communities. This collaboration can ensure sustainability and fairness in the development of communication networks in remote, frontier, and outer regions.
c. Policies and Incentives
Another key strategy is the formulation of supportive policies, such as:
· Subsidies for radio communication equipment for remote, frontier, and outer regions
· Fiscal incentives for network operators building in remote, frontier, and outer regions
· Special frequency allocations for emergency or public communication
These measures can encourage the private sector and the community to actively contribute to maintaining infrastructure.
d. Community Participation
Local communities hold a crucial role in maintaining and monitoring communication systems. Disruption reporting systems via SMS or community radio can facilitate early detection of technical issues. Moreover, local involvement helps build a sense of ownership and shared responsibility toward the communication infrastructure.
For example: disruption reports can be submitted to the village command post, which are then followed up by local technicians or subdistrict authorities.
4.3 Strategy Integration
All previously discussed strategies need to be implemented as part of an integrated ecosystem. A holistic approach is essential to ensure that radio communication systems in remote, frontier, and outermost regions function efficiently and sustainably, despite geographical and infrastructural challenges.
Examples of integration include:
· LEO satellite technology combined with solar panel power systems for extremely isolated areas where conventional infrastructure is not feasible.
· In regions with clustered populations, mesh network architecture and IoT-based monitoring can provide resilience and prevent single points of failure.
· Local operators and community members can take charge of daily maintenance, fault reporting, and basic repairs.
Strategic planning must also be guided by regional risk assessments, available local resources, and long-term sustainability goals. Without a coordinated and context-sensitive approach, even the most advanced technology will struggle to deliver consistent service in extreme conditions typical of these regions.
5. Case Study
5.1 East Nusa Tenggara: Optimizing Mesh Networks and Solar Energy
East Nusa Tenggara (NTT) is designated as one of Indonesia’s Remote, Frontier, and Outermost regions, characterized by its rugged terrain, dispersed small islands, and unreliable electricity infrastructure. To overcome these challenges, a mesh network was deployed using a dynamic topology method, ensuring that even if a node goes offline, data can still be redirected through other functioning nodes.
Moreover, the system utilizes solar power and lithium battery solutions to lessen dependence on conventional fuel-powered generators. By combining renewable energy integration with technical training for local personnel, the initiative aims to reduce system downtime by approximately 45% within six months, alongside marked improvements in MTBF (Mean Time Between Failures) and a reduction in MTTR (Mean Time To Repair).
This project demonstrates that through a decentralized technological approach and the empowerment of local communities, it is possible to significantly enhance the availability of communication systems in underserved and isolated areas.
5.2 Papua: Utilization of LEO Satellites and Energy Redundancy
The Papua region presents extreme obstacles such as dense forest landscapes, limited land access, and highly unpredictable weather. In this case study, a communication system using Low Earth Orbit (LEO) satellites was deployed to deliver wide coverage and low latency in areas lacking relay towers.
The system installation includes portable antennas and backup generators, ensuring basic operations can continue even if the main power source or local signal fails. As a result, the average repair duration decreased from two days to approximately eight hours, reflecting a notable improvement in system availability. Furthermore, the implementation of redundant energy systems and IoT-based monitoring technology helped to significantly lower the rate of unavailability. This case study from Papua highlights the critical role of redundancy strategies and technological adaptability when operating in harsh environmental conditions.
.6. Conclusion
This research demonstrates that system availability is influenced not only by the technological capabilities employed, but also by how well the chosen strategies align with the geographic, social, and infrastructure conditions of the area. Underdeveloped, frontier, and outermost regions face distinct obstacles such as limited power supply, challenging terrain, and a shortage of skilled personnel, which cannot be effectively addressed through standard solutions alone. By combining technological methods—including mesh networks, LEO satellites, IoT integration, and renewable energy sources—with non-technical strategies such as local workforce training and cross-sector cooperation, radio communication systems can be made more robust and adaptable to regional challenges.
Reference
Zhang, Y., Love, D. J., Krogmeier, J. V., Anderson, C. R., Heath, R. W., & Buckmaster, D. R. (2021). Challenges and Opportunities of Future Rural Wireless Communications. IEEE Communications Magazine (accepted for future publication).
Fendji, J. L. E. K., & Nlong, J. M. (2015). Rural Wireless Mesh Network: A Design Methodology. International Journal of Communications, Network and System Sciences, 8(1), 1–9.
Ashraf, U., Khwaja, A., Qadir, J., Avallone, S., & Yuen, C. (2021). WiMesh: Leveraging Mesh Networking for Disaster Communication in Poor Regions of the World.
Zou, W., Janic, M., Kooij, R., & Kuipers, F. (2007). On the Availability of Networks. In Proceedings of the Broadband Europe Conference, Antwerp, Belgium.
Farghal, S., El-Saadawi, M., Hassan, A., & Abd El-Aleem, A. (2020). Remote Monitoring of Distributed Generation Resources Using Redundant System. Mansoura Engineering Journal, 36(2), 10–17.
Bayu A. (2023, Marc 22). Pengertian Redundancy pada Jaringan
https://www.menggunakan.id/pengertian-redundancy/
Marahatta, A., Rajbhandari, Y., Shrestha, A., Singh, A., Thapa, A., Gonzalez-Longatt, F., Korba, P., & Shin, S. (2021). Evaluation of a LoRa Mesh Network for Smart Metering in Rural Locations. Electronics, 10(6), 751.
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