| dc.description.abstract | Emerging interactive multimedia applications such as Virtual Reality (VR) and Augmented Reality are upcoming important applications in healthcare, autonomous transport, education, tactile internet, and industrial automation. However, these applications face challenges over cellular networks. VR applications have significant throughput requirements for both uplink and downlink. However, the requirement is asymmetric as the downlink data rate requirement is relatively high compared to the uplink data rate. In addition to the high throughput requirement, low latency is another crucial requirement for an immersive experience. For latency, uplink has more stringent requirements as compared to downlink. For a consistent experience of complete immersion everywhere, consistent throughput is required even at the cell edge. There is an increasing need and demand for networks to care for the quality of service for various applications by making necessary resource allocation provisions across network components. Mainly technical issues have emerged in radio resources management, such as bandwidth allocation, call admission control, and Quality of Service (QoS) management. There are challenges in providing end-to-end bandwidth allocation, bandwidth negotiation, and re-negotiation during a session spanning an integrated network. Considering the limited cellular network's capacity, a suitable end to end call admission control is needed. To meet the interactive application's QoS requirement, issues in QoS negotiation, and appropriate proactive re-negotiation need to be addressed. A common framework is therefore required which can work across network Operators.
This research work aims to design solutions to the critical issues in 4G, 5G, and 4G-5G based integrated multimedia networks for interactive applications such as interactive virtual reality applications. For smooth operation of interactive multimedia networks, there is need to ensure efficient bandwidth allocation, reasonable call admission control, and dynamic Quality of Service (QoS) provisioning. To solve these issues in the cellular network, use of agent technology is proposed. Agents can make decisions by themselves on behalf of the user, migrate from node to node, and dynamically resolve issues occurring at various network elements. A mobile agent-based framework provides an efficient solution to solve multimedia network issues.
In summary, we have proposed an agent technology solution for bandwidth allocation, call admission control, and QoS management for interactive applications in 4G, 5G, and interactive 4G/5G IMNs. We propose schemes using static and mobile agents to ensure guaranteed, adaptive bandwidth and latency needs of VR applications. We designed suitable call admission control schemes so that the overall necessary resource allocation for interactive multimedia and non-interactive applications can occur. This will ensure QoS for interactive VR applications. Finally, we propose a QoS management scheme, including QoS negotiation and re-negotiation, aspects needed to ensure the continued smooth operation of the interactive application. | en_US |
