A context broker federation for QoC-driven selection of cloud-based context services

Context services typically provide infrastructure support for collection, management, and dissemination of context information concerning a number of subjects. Subjects may be users, objects such as handheld devices and equipment, or the environment of users. We propose, in this paper, a federation of cloud-based context brokers for context services selection. Context Brokers (CBs) of the federation cooperate to assist context consumers´ select suitable context providers, which can offer their required context information and fulfill their quality-of-context (QoC) requirements.