Title :
On-demand QoS hybrid ARQ for multimedia WATM networks
Author :
Sun, Z. ; Jia, X. ; Kimura, S. ; Ebihara, Y.
Author_Institution :
Dept. of Comput. Sci., City Univ. of Hong Kong, China
Abstract :
Since wireless channel is always band-limited with multi-path fading and highly burst errors, flexible error control is needed in wireless asynchronous transfer mode (WATM) networks. This paper proposes a hybrid automatic repeat request (ARQ) strategy using rate-compatible punctured convolutional (RCPC) codes, which has on-demand quality of services (QoS). In order to increase the throughput of WATM networks, the packet size for the retransmission of ARQ protocol varies according to the types of services, and the coding rate for the payload of the WATM cell is adjusted to match the varying channel. In case of cell loss rate (CLR) being constrained, such as 10-6, the throughput is analyzed and found to be better than the existing schemes.
Keywords :
asynchronous transfer mode; automatic repeat request; bandlimited communication; block codes; convolutional codes; fading channels; forward error correction; multimedia communication; multipath channels; packet radio networks; quality of service; ARQ protocol; FEC; RCPC codes; WATM cell; band-limited channel; block codes; cell loss rate; coding rate; hybrid automatic repeat request; multimedia WATM networks; multipath fading; on-demand QoS hybrid ARQ; packet size; quality of services; rate-compatible punctured convolutional codes; throughput; wireless asynchronous transfer mode; wireless channel; Asynchronous transfer mode; Automatic repeat request; Carbon capture and storage; Convolutional codes; Error correction; Forward error correction; Payloads; Protocols; Quality of service; Throughput;
Conference_Titel :
Wireless Communications and Networking Conference, 2002. WCNC2002. 2002 IEEE
Print_ISBN :
0-7803-7376-6
DOI :
10.1109/WCNC.2002.993340
