POLLING DEREGISTRATION FOR UNLICENSED PCS

This paper describes a polling deregistration protocol for a wireless access communications network which would support interoperability bet ween licensed personal communications services (PCS) and unlicensed-PC S (UPCS), We show how the protocol can be efficiently implemented in t he personal access communications system (PACS) for licensed PCS and i n the PACS-Unlicensed Version B (PACS-UB), An analytical model is prop osed to analyze the performance of the polling protocol, A cost functi on is derived, which can be used to estimate the optimal polling frequ ency.