Patent ID: 6188872
Filing Date: 2001-02-13
Classification: H04L

Abstract:
A method of checking and acknowledging reception of information in a two-way radio communication system in which information sent from a radio communication terminal device at a sending end is received by a relay station, the received information is transferred to a base station via a transmission line, and the information originating from the radio communication terminal device at the sending end is further transferred from the base station to a radio communication terminal device designated as the destination of the information thereby allowing a plurality of radio communication terminal devices to transmit and receive information to and from each other, wherein, in the process of transferring the information from the radio communication terminal device at the sending end to the radio communication terminal device at the destination, reception of the information originating from the radio communication terminal device at the sending end is checked and data indicating the result is sent to the radio communication terminal device at the sending end, and wherein said base station is adapted to operate in such a manner that:when said base station correctly receives information sent from a radio communication terminal device at the sending end via the relay station and transmission line, said base station generates base station reception acknowledgment information indicating that said information has been correctly received; andwhen said base station transmits the information addressed to any of said plurality of radio communication terminals devices toward said plurality of radio communication terminal devices, said base station adds to said information said base station reception acknowledgment information addressed to the radio communication terminal device at said sending end and transmits the resultant information.