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With the rise of cheap small-cells in wireless cellular networks, there arenew opportunities for third party providers to service local regions viasharing arrangements with traditional operators. In fact, such arrangements arehighly desirable for large facilities---such as stadiums, universities, andmines---as they already need to cover property costs, and often have fibrebackhaul and efficient power infrastructure. In this paper, we propose a newnetwork sharing arrangement between large facilities and traditional operators.Our facility network sharing arrangement consists of two aspects: leasing ofcore network access and spectrum from traditional operators; and serviceagreements with users. Importantly, our incorporation of a user serviceagreement into the arrangement means that resource allocation must account forfinancial as well as physical resource constraints. This introduces a newnon-trivial dimension into wireless network resource allocation, which requiresa new evaluation framework---the data rate is no longer the only mainperformance metric. Moreover, despite clear economic incentives to adoptnetwork sharing for facilities, a business case is lacking. As such, we developa general socio-technical evaluation framework based on ruin-theory, where thekey metric for the sharing arrangement is the probability that the facility hasless than zero revenue surplus. We then use our framework to evaluate ourfacility network sharing arrangement, which offers guidance for leasing andservice agreement negotiations, as well as design of the wireless networkarchitecture, taking into account network revenue streams.

A Ruin Theoretic Design Approach for Wireless Cellular Network Sharing with Facilities