PiSA-SA: Municipal Wi-Fi Based on Wi-Fi Sharing

Abstract

Large-scale municipal wireless networks are currently being established all around the world. These networks provide a rich set of local services, such as tourist guides, environmental information, pedestrian navigation, and local shopping guides. As recent financial failures of prominent municipal wireless networks show, it is economically challenging to achieve the bandwidth and coverage that is necessary for such a network. At the same time, Wi-Fi-sharing communities achieve high bandwidth and good coverage at a very low cost by capitalizing on the dense deployment of private access points in urban areas. However, from a technical, conceptual, and security perspective, Wi-Fi sharing community networks resemble a patchwork of heterogeneous networks instead of one well-planned, uniform and secure network as required for the economic success of a municipal Wi-Fi project. In this paper, we show how to realize municipal wireless services on top of a Wi-Fi-sharing infrastructure in a technically sound and economically attractive fashion while taking into account legacy devices and mobile clients. Our solution cleanly separates the roles of controlling and administering the network from providing bandwidth and wireless access. This allows municipalities to focus their resources on municipal wireless services instead of providing Wi-Fi access.

Secure IPsec based offload architectures for mobile data

“…Since HITs remain fixed during the communication, IP addresses can be changed / added transparently to the application. The HIP based architecture provided by Heer et al [13] is very close to the OSA architecture we proposed. However, HIP suffers from two drawbacks: (1) Communications are always IPsec protected and (2) HIP breaks the current IP oriented communications.…”

SensorCloud: Towards the Interdisciplinary Development of a Trustworthy Platform for Globally Interconnected Sensors and Actuators

“…The trust point thus acts as a representative of the sensor owner. Introducing a trusted entity similar to our trust point has successfully been proposed for different scenarios in the past, e.g., in the context of Wi-Fi-sharing communities [31] or for intelligent energy networks in Germany [32].…”

E2E: An Optimized IPsec Architecture for Secure and Fast Offload

“…As a result simultaneous mobility of the nodes is not possible with E2E. [29] is quite close to E2E architecture, as specific applications benefit from an HIP end-to-end communication with security and MM features. The remaining communications are tunnelled to a Security Gateway located in the EU private network rather than in its ISP's core network.…”