Patent ID: 6829228
Filing Date: 2004-12-07
Classification: H04L,H04W

Abstract:
An information transfer method for transferring information regarding an AV control protocol in a radio system for carrying out data transfer after establishing a logical connection between radio terminals or gateways prior to data transfer between the radio terminals or gateways, the method comprising the steps of:exchanging signaling packets for signaling at a datalink layer between the radio terminals or gateways prior to an exchange of data packets on which the information regarding the AV control protocol is loaded, each signaling packet containing a channel identifier indicating a logical channel that is set up for transferring the data packets and a protocol identifier indicating the AV control protocol, such that a signaling packet transmitted from each radio terminal or gateway indicates a channel identifier that is set up for the each radio terminal or gateway and a signaling packet received from a correspondent radio terminal or gateway indicates a channel identifier that is set up for the correspondent radio terminal or gateway; storing at the each radio terminal or gateway a correspondence information obtained through an exchange of the signaling packets, the correspondence information indicating a correspondence among the protocol identifier, the channel identifier that is set up for the each radio terminal or gateway, and the channel identifier that is set up for the correspondent radio terminal or gateway; and transferring the data packets between the radio terminals or gateways, according to the correspondence information.