Tharaka Hewa

University of Oulu · Centre for Wireless Communications (CWC)

6G is envisioned with stringent performance requirements served using an open and hyper-dynamic architecture where intelligence is embedded across multiple logical layers. Artificial Intelligence (AI), a key enabling technology in implementing this vision, is often proposed in a centralized mode of operation that does not serve the scalability and...

Private 5G Networks (P5GNs) are a newly emerg- ing paradigm that the telecommunication sector and indus- try verticals are about to witness. The concept of P5GN is to build a 5G network with just enough infrastructure, which is required to fulfill the specific and local needs of an industry vertical. Broadly, P5GNs offer two-fold benefits. First, it c...

The future vision of automated industries strongly relies on the intelligence of the Industrial Internet of Things(IoT). The 5th Generation(5G) and beyond networks ensure high-end connectivity with future IoT networks that support scalability, virtualization, and softwarziation. In addition, an enormous amount of smart wearable devices, such as sma...

As a distributed ledger technology, blockchain has received significant attention in revolutionizing telecommunication and networking domains. This article proposes a blockchain-based network slice brokering mechanism for multioperator and multitenant environments of the envisioned 6G networks.

The novel concept of Factory-as-a-Service (FaaS) allows the agility of adapting the manufacturing process by identifying the industry's supply chain and user requirements. To cater to FaaS, flexibility in networking and cloud services is a must. 5G network slice broker is a third-party mediator that caters to networking resource demand from clients...

Network slicing is a versatile and distinguishing capability of the 5th and 6th Generation (5G & 6G) mobile networks. Network slicing enables the consumers to deliver individualized and customized telecommunication services on the commonly shared infrastructure. Slice brokering is the dedicated service to facilitate the tenants and resource provide...

As a distributed ledger technology, blockchain has received significant attention in revolutionizing telecommunica-tion and networking domains. Besides, network slicing is a key enabling technology in 5G and a road map to the envisioned 6G, which expects to support multi-tenant and multi-operator environments. In this context, the concept of Networ...

Recent evolution of the Industrial Internet of Things (IIoT) empowers the classical manufacturing model with cloud computing integration for Industry 4.0. Cloud integration advances the capabilities of manufacturing systems with cloud-based controlling and real-time process monitoring, which is renowned as Cloud Manufacturing (CM). However, cloud i...

Several recent works talk about the potential use of network slice brokering mechanism to facilitate the resource allocation of network slicing in next generation networks. This involves network tenants on the one hand and resource/infrastructure providers on the other hand. However, the potential downside of deploying Network Slice Broker (NSB) is...

Blockchain is an innovative technology which enabled new applications for solving numerous problems in distributed environments such as the internet of things (IoT) equipped food supply chains (FSCs). In FSCs, the large volume of IoT data such as audio, video, images, and sensor data will be transferred to ensure the traceability of the food to its...

In order to provide specialized network services for different use cases, network slicing was introduced as the key technological element in the fifth generation (5G) wireless networks. It is foreseen that the trend will continue even to the beyond 5G networks to support multi-tenant multi-operator scenarios that show advanced consumer connectivity...

The industrial and computing research context revolutionized in various directions during the last decades. The blockchain-based smart contract embraced as a significant research interest due to its distinguishing features such as decentralized storage of transactions, autonomous execution of contract codes, and decentralized establishment of the t...

5G is a promising technology that has the potential to support verticals and applications such as Industrial Internet of Things IoT (IIoT), smart cities, autonomous vehicles, remote surgeries, virtual and augmented realities, and so on. These verticals have a diverse set of network connectivity requirements, and it is challenging to deliver customi...

Local 5G Operator (L5GO) concept is one of the most prominent versatile applications of the 5G in the near future. The popularity of L5GOs will trigger a greater number of roaming and offloading event between mobile operators. However, existing static and the operator-assisted roaming and offloading procedures are inefficient for L5GO ecosystem due...

There is a global hype in the development of digital healthcare infrastructure to cater the massive elderly population and infectious diseases. The digital facilitation is expected to ensure the patient privacy, scalability, and data integrity on the sensitive life critical healthcare data, while aligning to the global healthcare data protection st...

Blockchain is one of the disruptive technical innovation in the recent computing paradigm. Many applications already notoriously hard and complex are fortunate to ameliorate the service with the blessings of blockchain and smart contracts. The decentralized and autonomous execution with in-built transparency of blockchain based smart contracts revo...

The COVID-19 pandemic has adversely affected almost all aspects of human life, various sectors of business, and regions of the world. The flow of human activities halted for several months, and are now being carefully redefined to align with guidelines and recommendations to avoid the spread of the novel coronavirus. In contrast to other pandemics...

Internet of Things(IoT) is a key topic of interest in modern communication context. The IoT interconnects millions and billions of devices through wireless communication. The wireless communication exposes the devices to massive security risks in different dimensions. The Public Key Infrastructure(PKI) is one of the promising solutions to eliminate...

The roles of trust, security and privacy are somewhat interconnected, but different facets of next generation networks. The challenges in creating a trustworthy 6G are multidisciplinary spanning technology, regulation, techno-economics, politics and ethics. This white paper addresses their fundamental research challenges in three key areas. Trust:...

The roles of trust, security and privacy are somewhat interconnected, but different facets of next generation networks. The challenges in creating a trustworthy 6G are multidisciplinary spanning technology, regulation, techno-economics, politics and ethics. This white paper addresses their fundamental research challenges in three key areas. Trust:...

Hitherto, the evolution of mobile networks havefulfilled the increasing demands for enhanced performance,availability, portability, elasticity, and energy efficiency posed bythe ever growing network services. In line with the progression,5G depicts the next generation of mobile networks that furtherpromises remarkable performance improvements as we...

The world transforms towards the intelligent information era by 2030. The key domains linked with human life such as healthcare, transport, entertainment, and smart cities are expected to elevate the quality of service with high-end user experience. Therefore, the telecommunication infrastructure has to meet unprecedented service level requirements...

Consider the dilemma of food consumers at outlets such as grocery stores, cafes, restaurants and e-tailers; a myriad of certifications such as "organic", "fair-trade", "non-GMO", "expiry dates" confront the choice that they make. Implicit in that choice is the "trust" consumers have for the brands and merchants. What if the entire food chain could...