Title :
Performance comparisons of two retransmission protocols for CDMA
Author :
Chuah, M.C. ; Doshi, B.T. ; Dravida, S. ; Ejzak, R.P. ; Nanda, S.
Author_Institution :
AT&T Bell Labs., Holmdel, NJ, USA
fDate :
28 Apr-1 May 1996
Abstract :
We describe a new radio link protocol for CDMA IS-95 circuit-mode data. This protocol, (Protocol S), relies on a single level of recovery and uses a flexible segmentation and recovery (FSAR) sublayer to efficiently pack data frames into physical layer bursts. We next describe Protocol T, that consists of two levels of recovery and compare the performance of Protocol T with Protocol S. Protocol T has been standardized for CDMA circuit-mode data as IS-99. We find that the complexity of the two level recovery mechanism buys higher throughput through reduced overhead. However, the choice of TCP (and its associated congestion control mechanism) as the upper layer of recovery on the link layer, leads to long fade recovery times for Protocol T
Keywords :
access protocols; cellular radio; channel capacity; code division multiple access; data communication; digital radio; land mobile radio; telecommunication congestion control; transport protocols; CDMA; FSAR sublayer; IS-95 circuit-mode data; Protocol S; Protocol T; TCP; congestion control mechanism; digital cellular radio; flexible segmentation; long fade recovery times; overhead; performance; physical layer bursts; radio link protocol; recovery; retransmission protocols; throughput; Base stations; Cellular networks; Circuits; Emulation; Multiaccess communication; Physical layer; Protocols; Radio link; Switches; Throughput;
Conference_Titel :
Vehicular Technology Conference, 1996. Mobile Technology for the Human Race., IEEE 46th
Conference_Location :
Atlanta, GA
Print_ISBN :
0-7803-3157-5
DOI :
10.1109/VETEC.1996.503451
