Patent ID: 6570865
Filing Date: 2003-05-27
Classification: H04B

Abstract:
A communication system comprising:a base station; a plurality of mobile terminals; a reservation channel formed between said base station and said mobile terminals defined in accordance with a Code Division Multiple Access (CDMA) scheme utilizing a spreading code; and a plurality of traffic channels formed between said base station and said mobile terminals defined in accordance with said CDMA scheme utilizing a plurality of spreading codes, wherein time slots are defined on each of said traffic channels, wherein one of said mobile terminals transmits a request for an assignment of a time slot or a plurality of time slots on a traffic channel defined by one of said spreading codes by transmitting a reservation packet to said base station through said reservation channel, and wherein one of said mobile terminals, upon receiving from said base station a reply to the request, performs packet communication using an assigned time slot or a plurality of assigned time slots on the traffic channel determined based on the reply.