Patent ID: 6456840
Filing Date: 2002-09-24
Classification: H04W

Abstract:
A radio communication system comprising:(a) a plurality of terminal equipments connected to one another by a radio system through a radio base station connected to a communication line; (b) a service control station existing on said communication line, and controlling communication among said terminal equipments; said terminal equipments being designed to be capable of communicating data information with one another through said service control station; and wherein each of said terminal equipments is comprised of: i. a radio communication section for making radio communication with a radio base station; ii. a radio control section for, when data information and index information acting as an index of said data information are to be transmitted to another terminal equipment transmitting thereto a request for transmitting said data information and said index information to said another terminal equipment, establishing a radio data frame, based on said data information, said index information, and said request, and for, when data information and index information are to be received from another terminal equipment, demodulating a received radio data frame, and extracting data information and from the thus demodulated radio data frame; iii. a first memory for storing therein index information to be transmitted; iv. a second memory for storing received index information therein; v. a data processor for processing data to be transmitted and received data; and vi. an annunicator for annunciating a user that index information has been received.