A CAM-Based, High-Performance Classifier-Scheduler for a Video Network Processor.

• Main Author: Tarigopula, Srivamsi
• Other Authors: Mohanty, Saraju P.
• Format: Others
• Language: English
• Published: University of North Texas 2008
• Subjects: Video network processor; scheduling; classification; Network processors.; Multicasting (Computer networks)
• Online Access: https://digital.library.unt.edu/ark:/67531/metadc6045/

Classification and scheduling are key functionalities of a network processor. Network processors are equipped with application specific integrated circuits (ASIC), so that as IP (Internet Protocol) packets arrive, they can be processed directly without using the central processing unit. A new network processor is proposed called the video network processor (VNP) for real time broadcasting of video streams for IP television (IPTV). This thesis explores the challenge in designing a combined classification and scheduling module for a VNP. I propose and design the classifier-scheduler module which will classify and schedule data for VNP. The proposed module discriminates between IP packets and video packets. The video packets are further processed for digital rights management (DRM). IP packets which carry regular traffic will traverse without any modification. Basic architecture of VNP and architecture of classifier-scheduler module based on content addressable memory (CAM) and random access memory (RAM) has been proposed. The module has been designed and simulated in Xilinx 9.1i; is built in ISE simulator with a throughput of 1.79 Mbps and a maximum working frequency of 111.89 MHz at a power dissipation of 33.6mW. The code has been translated and mapped for Spartan and Virtex family of devices.