Information-centric networks (ICNs) have emerged as a prominent future Internet architecture. They work on the principle that, in today's society, a network should be optimised towards the delivery of information, rather than the transit of messages between pre-determined end hosts. At the same time, another prominent research direction has been the delay-tolerant networking initiative, which argues that networks must explicitly support the tolerance of high delays and disruptions in end-to-end paths. We believe that this observation is pervasive across a number of applications and network technologies and should therefore be strongly considered in any future ICN designs. This paper explores the potential of combining these concepts into an information-centric delay-tolerant network (ICDTN). Through a qualitative and quantitative investigation, we present arguments in favour of the design, as well as important research challenges.
A pollution data collection exercise was conducted in Hyderabad, India in February, 2012. Fifteen bespoke Carbon Monoxide (CO) monitors were deployed across a small section of a busy highway to collect data for an urban environmental engineering study targeting traffic-generated pollution. The monitors were used to record CO concentrations and temperature; however, in spite of the fact that the monitors were calibrated in advance of deployment, interpretation of the data collected has proved to be challenging. This paper reports the findings of the experiment and proposes a bias-adjustment separation technique that provides a consensual baseline for all the monitors. The result is that spatial variation in the distribution of CO can be studied at snapshots of time. Moreover, the cross-correlations between sensors can be reliability extracted after the bias adjustment.
Ad hoc networks have obtained a growing interesting because of their advantages in many practical applications. One of the major challenges faced by the designers is to support Quality-of-Service (QoS) in such a multihop mobile network. Especially for real time services, how to issue routes with enough and constant bandwidth is a key problem. This paper proposes a novel QoS solution, named CDMA Bus Lane, which dynamically sets up and reserves an interference-free path for each real-time flow according to its bandwidth requirements. The bandwidth calculation and the channel code assignment method are introduced here. Also a routing algorithm has been proposed to calculate and reserve the bandwidth hop by hop from source to destination combining an on-demand routing layer together with CDMA MAC and PHY layers.
This paper discusses an agent-technology architecture for efficient, scaleabte and robust real-time control of third-generation (3G) mobile systems in the context of realistic business models of network providers, service providers and customers. The aim is to bring financial benefits to mobile users through improved efficiency, not only through competition between network operators, but also through better control of the radio resource.