Abstract: In a mobile unit of a GSM network (Global System for Mobile Communications), various tasks are performed under real-time constraints. After starting an execution of a first task, the execution of the first task is suspended a plurality of times for a respective plurality of time intervals. A second task is executed during at least one of the plurality of time intervals. The first and second tasks are performed by a single-core microprocessor digital signal processor with a microprocessor and a digital signal processor combined on a single chip.

Abstract: In a mobile unit of a GSM network (Global System for Mobile Communications), various tasks are performed under real-time constraints. After starting an execution of a first task, the execution of the first task is suspended a plurality of times for a respective plurality of time intervals. A second task is executed during at least one of the plurality of time intervals.

Abstract: For obtaining an efficient, high-speed and reliable protocol a protocol stack is developed that supports only functionality which is absolutely essential for the application. In particular, it ignores all those functions relating to use in long-distance networks. The inventive step firstly comprises the movement of a distributed synchronization in time of multiple computation systems from the application to the protocol stack for realization of a voting mechanism within the computer network and, secondly, the integration of this functionality in this efficient and reliable protocol.