Mr. Haobo Wang Profile

Haobo Wang

at Polytechnic Univ

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Proceedings Article | 3 July 2002 Paper

Hardware implementation of a signaling protocol

Haobo Wang, Malathi Veeraraghavan, Ramesh Karri

Proceedings Volume 4874, (2002) https://doi.org/10.1117/12.475295

KEYWORDS: Switches, Signal processing, Field programmable gate arrays, Interfaces, Clocks, Asynchronous transfer mode, Data transmission, Error control coding, Prototyping, Human-machine interfaces

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Signaling protocols in switches are primarily implemented in software for two important reasons. First, signaling protocols are quite complex with many messages, parameters and procedures. Second, signaling protocols are updated frequently requiring a certain amount of flexibility for upgrading field implementations. While these are two good reasons for implementing signaling protocols in software, there is an associated performance penalty. Even with state-of-the-art processors, software implementations of signaling protocol are rarely capable of handling over 1000 calls/sec. Correspondingly, call setup delays per switch are in the order of milliseconds. Towards improving performance we implemented a signaling protocol in reconfigurable FPGA hardware. Our implementation demonstrates the feasibility of 100x-1000x speedup vis-a-vis software implementations on state-of-the-art processors. The impact of this work can be quite far-reaching by allowing connection-oriented networks to support a variety of new applications, even those with short call holding times.

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