A New AAL Protocol for Tirne - Critical UDP Traffic over Wireless ATM Networks
نویسنده
چکیده
This paper describes the design and performance of a new AAL protocol (AAL-UDP for UDP/IP over wireless ATM ror rates and burstier error patterns in comparison with the fiber-based links for which ATM was designed. The purpose of AAL-UDP is to support time-critical UDP traffic over wireless ATM networks. The key ideas in the design consist of no discard at AAL level and header protection with sequence number mechanism. The UDP/IP header is repeated for reliability, because it contains the most important information such as address and port number. The proposed AAL has been validated using a software emulator on the simulated wireless ATM network. The simulation results show that the AAL-UDP provides significant improvement in throughput as well as application-level performance compared to the conventional AAL 5 case.
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