SELECTIVE CALL SYSTEM

A selective call system including a system controller, a base station transceiver and a plurality of secondary stations with receivers and low powered transmitters capable of sending spread spectrum signals. Invitations are issued to the secondary stations by the system controller at varying power l...

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Bibliographic Details
Main Author GIBSON, RODNEY WILLIAM
Format Patent
LanguageEnglish
Published 13.08.1999
Edition7
Subjects
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
TRANSMISSION
WIRELESS COMMUNICATIONS NETWORKS
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Summary:A selective call system including a system controller, a base station transceiver and a plurality of secondary stations with receivers and low powered transmitters capable of sending spread spectrum signals. Invitations are issued to the secondary stations by the system controller at varying power levels. Only those secondary stations receiving the invitation signal are able to respond. Those secondary stations too far away cannot respond to a low power invitation, and since each secondary station can only respond once, upon a received invitation of increased power, such outer lying secondary stations can respond without interference from closer lying secondary stations.
Bibliography:Application Number: HK19980114118