Title :
A novel redundancy technique for mobile networks
Author :
Li, Li ; Agrawal, Dharma P.
Author_Institution :
Dept. of Electr. & Comput. Eng., North Carolina State Univ., Raleigh, NC, USA
Abstract :
In a mobile network, the information transmission is done in a relatively noise and burst-error prone shared medium. The two methods commonly used to recover the transmission errors are automatic retransmission request (ARQ) and forward error correction (FEC). The ARQ is issued when errors exceed beyond those that can be corrected by FEC. ARQ implies re-transmission, which wastes a considerable amount of bandwidth and battery energy and creates an undesirable long delay, and can´t be tolerated for certain services. We describe a spatial redundancy scheme in a mobile cellular network which is shown to greatly decrease the handoff call termination probability, the forced new call blocking probability and the ARQ probability. The basic idea is to add minimal number of redundant stations (Standby Stations: SS) at strategic locations in the cellular network topology. One of the potential location is the corner where the three adjacent three cells meet. Each SS could be “listening” and quietly monitoring activities on adjacent cells. These strategic locations could also be based on ground and signal profiles, so that fading signals could be easily restored by the SS
Keywords :
forward error correction; mobile communication; performance evaluation; automatic retransmission request; fading signals; forward error correction; information transmission; mobile cellular network; mobile networks; redundancy technique; spatial redundancy scheme; Automatic repeat request; Bandwidth; Batteries; Delay; Error correction; Forward error correction; Land mobile radio cellular systems; Monitoring; Network topology; Redundancy;
Conference_Titel :
Computer Performance and Dependability Symposium, 1998. IPDS '98. Proceedings. IEEE International
Conference_Location :
Durham, NC
Print_ISBN :
0-8186-8679-0
DOI :
10.1109/IPDS.1998.707729