Title :
On higher layer protocol performance in CDMA S-ALOHA networks with packet combining in Rayleigh fading channels
Author :
Hossain, Ekram ; Bhargava, Vijay K.
Author_Institution :
Dept. of Electr. & Comput. Eng., Victoria Univ., BC, Canada
Abstract :
The performance implications of retransmission diversity packet combining on the RLC (radio link control)/MAC (medium access control) layer and transport layer protocol performance are investigated for three different heuristic-based RLC/MAC layer access control schemes in a CDMA S-ALOHA network under frequency selective Rayleigh fading. The transport layer protocol implements a two-level error recovery mechanism for reliable data transmission. Two different transport layer timer control mechanisms are considered. Implications of some physical layer parameters on system performance are discussed. It is observed that, for two-level error recovery through a reliable transport protocol, the achieved throughput depends on the transport protocol timer control mechanism and a suitable mechanism can be identified for an underlying RLC/MAC layer access control scheme and a particular physical layer design
Keywords :
Rayleigh channels; access protocols; code division multiple access; multipath channels; packet radio networks; transport protocols; CDMA S-ALOHA networks; RLC/MAC layer access control; Rayleigh fading channels; frequency selective Rayleigh fading; higher layer protocol performance; medium access control; multipath fading; physical layer design; physical layer parameters; radio link control; reliable data transmission; reliable transport protocol; retransmission diversity packet combining; system performance; throughput; transport layer protocol; transport layer timer control; two-level error recovery; Access control; Access protocols; Diversity reception; Frequency diversity; Media Access Protocol; Multiaccess communication; Physical layer; Radio control; Radio link; Transport protocols;
Conference_Titel :
Global Telecommunications Conference, 2000. GLOBECOM '00. IEEE
Conference_Location :
San Francisco, CA
Print_ISBN :
0-7803-6451-1
DOI :
10.1109/GLOCOM.2000.891667