UCLA Public Safety Network Systems

Group 4 : Architecture

The purpose of group 4 is to establish which devices go in each layer of the seven layer protocol and establish interoperability between all of them. Once we have established the type of device that goes into each category, we may have to alter the structure of the device in order to work seamlessly with the other devices on the network.

The seven layer protocol includes:
-Physical layer
    -Deals with the transfer of bits over a communication channel.
-Data Link Layer
    -Provides for the transfer of frames across a transmission that directly connects two nodes.
-Network layer
    -Provides for the transfer of data in the form of packets across a communication network.
-Transport Layer
    -Responsible for the end-to-end transfer of messages from a process in the source machine to a process in the destination machine.
-Session Layer
    -Used to control the manner in which data are exchanged
-Presentation Layer
    -Intended to provide the application layer with independence from differences in the representation of data.
-Application Layer
    -Provides services that are frequently required by applications that involve communications.

•   Use of portable Smartphones (with self-contained high quality camera and image/video display) for diverse Public Safety applications
•   Use of Smartphone features but with larger and more capable displays for dedicated “IT operator” in vehicles andin control/command nodes
•    Adopt existing and new automated and robust geo-locating technologies for rapid locating/tracking of first responders in diverse (urban and rural) scenarios
•   Exploit voice recognition and adaptive noise cancellation technologies for rapid personnel identification and high quality speech communications in noisy and confined environments
•   Devices to sense / collect /generate/ receive / process / fuse and disseminate over time / space Public Safety related data flows. Use of these devices in public safety scenarios such as: alert messaging, precedence based QoS oriented flow control of network communications in emergency situations; dissemination of medical and environmental contamination data; , congestion control for highway systems.