Patent ID: 6587457
Filing Date: 2003-07-01
Classification: H04M,H04W

Abstract:
A method in packet data transmission between a wireless terminal (MT) and a mobile IP router (5, 5â€², 5â€³) having data communication with a data network utilising the Internet protocol (IP), in which method a first data communication is formed between the wireless terminal (MT) and an access point (4, 4â€²) and a second data communication between the access point (4, 4â€²) and the mobile IP router (5, 5â€², 5â€³) for transferring IP flows between the wireless terminal (MT) and the mobile IP router (5, 5â€², 5â€³), and which first data communication is a wireless data communication, characterized in that in the method an IP flow filter (IPVS) is defined for at least one IP flow for the identification of the IP flow, a radio flow label (RFID) and an IP flow label (IPTAG) are defined for a wireless flow corresponding to said IP flow, wherein said radio flow label (RFID) is connected to the packets of said first data communication, and said IP flow label (IPTAG) is connected to the packets of said second data communication; andwherein the IP flow label (IPTAG) of the IP flow and the radio flow label (RFID) of the radio flow corresponding thereto is stored at the access point; and the data transmission is divided into at least a network layer (L3), a data link layer (L2) and a physical layer (L1), wherein the IP flow label (IPTAG) is added to the packets of the network layer (L3).