Title :
A new AAL protocol for time-critical UDP traffic over wireless ATM networks
Author_Institution :
Sch. of Electr. & Comput. Eng., Georgia Inst. of Technol., Atlanta, GA, USA
Abstract :
This paper describes the design and performance of a new AAL protocol (AAL-UDP) for UDP/IP over wireless ATM networks. The wireless links are characterized by higher error 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
Keywords :
asynchronous transfer mode; packet radio networks; protocols; telecommunication network reliability; telecommunication traffic; AAL protocol; AAL-UDP; UDP/IP; address; design; error patterns; error rates; header protection; performance; port number; reliability; sequence number mechanism; software emulator; throughput; time-critical UDP traffic; wireless ATM networks; Communication system traffic control; Control systems; Error correction; Forward error correction; Payloads; Quality of service; TCPIP; Telecommunication traffic; Time factors; Wireless application protocol;
Conference_Titel :
Communications, 1999. ICC '99. 1999 IEEE International Conference on
Conference_Location :
Vancouver, BC
Print_ISBN :
0-7803-5284-X
DOI :
10.1109/ICC.1999.765452
