Modeling CDPD channel holding times

Abstract

Cellular Digital Packet Data (CDPD) provides wireless data communication services to mobile users by sharing unused RF channels with AMPS on a non-interfering basis. To prevent interference on the voice activities, CDPD makes forced hop bo a channel stream when a voice request is about to use the RF channel occupied hy the channel stream. The number of forced hops is affected by the voice channel selection policy. We propose analytic models tc investigate the CDPD channel holding time for thf the least-idle and random voice channel selection policies. Under Various system parameters and voice channel selection policies, we provide guidelines to reduce the number of forced hops.