Resource reservation in mobile internet protocol

A method of transmitting data between first and second Internet hosts coupled via the Internet and a digital radio telephone network, wherein one of said first and second hosts is a mobile host wirelessly connected to the radio telephone network, and the radio telephone network is a GSM network, and the packet switched transmission mode is GPRS, the method comprising the steps of:

• defining a plurality of Internet Quality of Service (QoS) levels in terms of the transmission delay over the Internet;
• mapping at least one of the defined Internet QoS levels to a circuit switched transmission mode of the radio telephone network and mapping the remaining QoS level(a) to a packet switched transmission mode of the radio telephone network;
• prior to transmitting the data, allocating one of the QoS levels to the transmission and, if necessary, reserving transmission capacity in the Internet to ensure that the allocated QoS level is met;
• and
• transmitting the data over the Internet and the radio telephone network, wherein the step of transmitting the data over the Internet is facilitated using Mobile IP to route data via the chosen transmission mode domain and wherein the transmission over the radio telephone network uses the transmission mode mapped to the allocated QoS level.

A method of transmitting data between first and second Internet hosts coupled via the Internet and a digital radio telephone network, the method comprising:

• defining a plurality of Internet Quality of Service (QoS) levels in terms of the transmission delay over the Internet;
• mapping at least one of the defined Internet QoS levels to a circuit switched transmission mode of the radio telephone network and mapping the remaining QoS level(s) to a packet switched transmission mode of the radio telephone network;
• prior to transmitting said data, allocating one of said QoS levels to the transmission and, if necessary, reserving transmission capacity in the Internet to ensure the allocated QoS level is met;
• and
• transmitting said data over the Internet and said radio telephone network, wherein the transmission over the radio telephone network uses the transmission mode mapped to the allocated QoS level.