The Indian Railways Reservation System (IRRS) is one of the world’s busiest reservation systems railway tickets. Recently, COVID-19 pandemic situation has severely impacted Railway’s (IR) transportation, which eventually enforced IR to alter passenger system. This research attempts evaluate and analyse factors that modify IRRS. In this research, a rough set-based Data Mining Scaffolding (DMS) b...

It is known that a threshold policy (or trunk reservation policy) is optimal for Erlang’s loss system under certain assumptions. In this paper we examine the robustness of this policy under departures from the standard assumption of exponential service times (call holding times) and give examples where the optimal policy has a generalized trunk reservation form.

Multimedia applications require operating systems that support time-constrained data types such as digital audio and video. These continuous media [1] demand timely service from the system, and time-sharing scheduling algorithms are not sufficient. Furthermore, simple fixed priority scheduling, used in many hard real-time systems, does not necessarily guarantee the successful execution of arbit...

In recent years, real-time operating systems began to support the resource reservation paradigm. This technique has proved to be very effective in providing QoS to both, real-time and legacy applications, ensuring that the temporal misbehavior of an application does not affect any other (temporal isolation). However, resource sharing in a reservation system is still not well understood, and can...

In resource constrained embedded systems, memory reservation, which provides physically contiguous memory allocation to devices (e.g., video decoder and camera), decreases the memory efficiency of the system. The dedicated use of reserved memory by an owner device makes itself more under-utilized when the device is less frequently used. Previous approaches support on-demand reservation to relax...

We present a new method for determining placements of flexible reservation requests into a schedule. For each considered placement the what-if method inserts a placeholder into the schedule and simulates the processing of batch jobs currently known to the system. Each placement is evaluated wrt. well-known scheduling metrics. This information may be used by a Grid reservation service to choose ...

Effective and efficient Quality of Service (QoS) management is critical for a service grid to meet the requirements of both grid users and service providers. We introduce a scalable framework of service management in grid environment to guarantee the QoS of grid services. Several characters of our framework are 1) grid level resource reservation mechanism to use existing heterogeneous resource ...

Due to the high mobility of low earth orbit (LEO) satellites, there is a significant number of handover attempts in a LEO satellite mobile communication system, causing a high handover failure rate. This paper proposes an Adaptive Channel Reservation Scheme (ACRS) which gives an overall optimal success rate for both handover and new call initialisation. ACRS is able to adapt to the local traffi...

In this paper, we give an overview and classification of optical burst switching schemes and present burst reservation concepts. The performance of various basic reservation mechanisms proposed in literature is compared. Furthermore, a new analysis is introduced that allows to calculate the loss probabilities of a two-class system based on the reservation mechanism just-enough-time (JET) for ar...