Telecommunications Research Laboratories

Jose Alejandro Rueda

Christopher Troy Kavanagh

Paul Card

Yair Bourlas

Arindam Mitra

Joseph Chai-Wan Wu

Jeffrey E Diamond

Sami Kibria

Nicholas Christopher Wade Thiessen

Murhucumaru Maheswaran

Robert D McLeod

Content networking provides a content-based routing architecture, in which a virtual overlay network called the 'virtual content network' is superimposed over the physical network. The content network contains content routers as the nodes and 'pathways' as links. The content-based routers at the edge of the content network may be either a gateway to the client domain or a gateway to the server domain whereas the interior ones correspond to the content switches dedicated for steering content requests and replies. The pathways are virtual paths along the physical network that connect the corresponding content routers. The tags for tagging content requests at the ingress points are designed to incorporate several different attributes of the content in the routing process. The path chosen for routing the request is the optimal path and is chosen from multiple paths leading to the replicas of the content.

Wide-area content-based routing architecture

A Smart Parking Meter System makes it possible to track whether or not a vehicle occupies parking meter stalls and whether or not the time has expired. The system uses a wireless communication protocol which may be of the type known under the trade mark &ldquo;Bluetooth&rdquo; and provides the portability of embedded systems and the convenience of personal digital assistants with the powers of the C and Java programming languages. There are two main components to the Smart Parking Meter System, the handheld device, or the PDA, and the actual parking meters. Each device has the Smart Parking Meter System application installed in it, as well as the wireless modules, such as Bluetooth to use as a communication medium. The parking meters also have a motion sensor to detect any movement within it view range. The handheld device is able to extract all the parking states for each parking meter within a block or street depending on user configuration of system.

Smart parking meter system

An architecture for capture and generation, and a set of methods for characterization, prediction, and classification of traffic in packet networks are disclosed. The architecture consists of a device that stores packet timing information and processes the data so that characterization, prediction, and classification algorithms can perform operations in real-time. A methodology is disclosed for real-time traffic analysis, characterization, prediction, and classification in packet networks. The methodology is based on the simultaneous aggregation of packet arrival times at different times scales. The traffic is represented at the synchronous carrier level by the arrival or non-arrival of a packet. The invention does not require knowledge about the information source, nor needs to decode the information contents of the packets. Only the arrival timing information is required. The invention provides a characterization of the traffic on packet networks suitable for a real-time implementation. The methodology can be applied in real-time traffic classification by training a neural network from calculated second order statistics of the traffic of several known sources. Performance descriptors for the network can also be obtained by calculating the deviation of the traffic distribution from calculated models. Traffic prediction can also be done by training a neural network from a vector of the results of a given processing against a vector of results of the subsequent processing unit; noticing that the latter vector contains information at a larger time scale than the previous. The invention also provides a method of estimating an effective bandwidth measure in real time which can be used for connection admission control and dynamic routing in packet networks. The invention provides appropriate traffic descriptors that can be applied in more efficient traffic control on packet networks.

Method for real-time traffic analysis on packet networks

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Winnipeg, Canada

Jose Alejandro Rueda