CODE DIVISION MULTIPLE ACCESS (CDMA) INBOUND MESSAGING SYSTEM UTILIZING RE-USE OF SEQUENCES

摘要

A central controller (10) controls the operation of a code division multipleaccess (CDMA), spread spectrum communication system, which includes basestations (15) and portable transceivers (20) for communicating with the basestations(15). The central controller (10) stores a plurality of seeds, which are usedby theportable transceivers (20) in generating pseudo-noise (PN) sequences, and, inresponse to requests from base stations (15), the central controller (10)distributes atleast a portion of the assignable seeds to each of the requesting basestations (15).The base stations (15) that have received seeds from the central controller(10)subsequently transmit the seeds over the air to the portable transceivers (20)withintheir respective coverage areas. The portable transceivers (20) then utilizethe seedsto generate spread spectrum signals for reception by a closest base station(15)having a coverage area in which they are located.