Patent ID: 6728208
Filing Date: 2004-04-27
Classification: H04M,H04W

Abstract:
A data transmission method for a mobile communications system having a packet data transmission capability, comprising:providing in the mobile communications network at least one connection leg with at least two paths having different reliabilities, said at least two paths including a User Datagram Protocol path with a lower reliability and a Transmission Control Protocol path with a higher reliability; setting up a single packet data protocol context for a mobile packet data terminal for routing data packets through the mobile communications system between said mobile packet data terminal and an external communication system; transmitting, within said single packet data protocol context, data packets of at least two user applications run in said mobile packet data terminal; providing each individual data packet with priority information and traffic type information as quality of service parameters, the priority information indicating one of at least two priority levels and the traffic type information indicating one of at least two traffic types; scheduling and policing the transmission of each respective data packet according to said at least one quality of service parameter carried in said respective data packet, within the limits set by said packet data protocol context; providing each individual data packet with reliability information as a further quality of service parameter, said reliability information defining one of at least two reliability classes; and multiplexing the data packets to said at least two paths according to said reliability information carried in said data packets.