Distributed Placement of Service Facilities in Large-Scale Networks

Abstract— The effectiveness of service provisioning in largescale networks is highly dependent on the number and location of service facilities deployed at various hosts. The classical, centralized approach to determining the latter would amount to formulating and solving the uncapacitated k-median (UKM) problem (if the requested number of facilities is fixed), or the uncapacitated facility location (UFL) problem (if the number of facilities is also to be optimized). Clearly, such centralized approaches require knowledge of global topological and demand information, and thus do not scale and are not practical for large networks. The key question posed and answered in this paper is the following: “How can we determine in a distributed and scalable manner the number and location of service facilities?” We propose an innovative approach in which topology and demand information is limited to neighborhoods, or balls of small radius around selected facilities, whereas demand informati...

• Type: Conference
• Year: 2007
• Where: INFOCOM
• Authors: Nikolaos Laoutaris, Georgios Smaragdakis, Konstantinos Oikonomou, Ioannis Stavrakakis, Azer Bestavros
• Keywords: Centralized Approaches, Communications, Demand Information, INFOCOM 2007, Service Facilities