Learn More
Real-time applications such as e-commerce, flight control, chemical and nuclear control, and telecom-munication are becoming increasingly sophisticated in their data needs, resulting in greater demands for real-time data services that are provided by real-time databases. Since the workload of real-time databases cannot be precisely predicted, they can(More)
— Automation of radio network management is a key determinant to work reduction for wireless operators. By replacing time consuming and costly tasks with automatic mechanisms, operational expenditure can be reduced. In this paper we present a method for automatic configuration of locally-unique physical cell identities and neighbor cell relation lists in 3G(More)
In applications such as web-applications, e-commerce, and engine control, the demand for real-time data services has increased. In these applications, requests have to be processed within their deadlines using fresh data. Since the workload of these systems cannot be precisely predicted, they can become overloaded and as a result, deadline and freshness(More)
With the increasing demand of real-time services, the applications become more complex in their data needs. Real-time databases usually provide the management of data for real-time data services. However the workload applied to dynamic systems is not always known and the database might face overloads. Then deadlines can be missed and the freshness of the(More)
Self-organising Networks (SON) as introduced for 3G Long Term Evolution (LTE) will typically involve several different SON functions. These functions are not necessarily aware of each other and may have complex relations and interdependencies, for example, conflicting parameter settings, depending on their design and approach. Coordination of SON functions(More)
1. Background Lately the demand for real-time data services has increased. Applications used in manufacturing, web-servers, e-commerce etc. are becoming very sophisticated in their data needs. In these applications it is desirable to process user requests within their deadlines using fresh data [4]. Since the external environment is constantly changing, it(More)
A vision is presented regarding the use of self-organisation methods (self-optimisation, self-configuration, self-healing) as a promising opportunity to automate wireless access network planning and optimisation. Key objectives are a substantial reduction of the operational expenditure and an enhancement of network coverage, resource utilisation and service(More)
Operationally efficient radio networks typically feature a high degree of self-organization. This means less planning efforts and manual intervention, and a potential for better radio resource utilization when network elements adapts its operation to the observed local conditions. The focus in this paper is self-optimization of the random access channel(More)
Recently, cheap and large capacity non-volatile memory such as flash memory is rapidly replacing disks in embedded systems. While the access time of flash memory is highly predictable, deadline misses may occur if data objects in flash memory are not properly managed in real-time embedded databases. Buffer cache can be used to mitigate this problem.(More)