Dynamic Resource Assignment (DRA) with Minimum Outage in Cellular Mobile Radio Networks

The assignment of resources to cells of a cellular mobile radio network is an important task in design and operation of a network. In practice, the number of resource units that are available for assignment to the cells is limited. As a consequence, not all cells can generally receive as many resource units as demanded and outage, defined as the number of resource units requested but not assigned, occurs. In this paper, the dynamic assignment of resources to the cells of a cellular network is discussed under the assumption that the number of resource units available for the assignment is not in all cases sufficient to fulfil the resource demand of every cell and that the occurring outage has to be minimised. An efficient method of determining the number of resource units required for outage-free resource assignment is presented. This method is used to determine outage probability and a lower bound for the amount of outage. Finally, a policy based algorithm for the assignment of resources with very low complexity is presented and its performance in terms of amount of outage compared to the lower bound evaluated.