A method of producing reduced packet size in a Generic Access Network GAN) user plane comprising the steps of: (a) defining an Encapsulating Security Payload (ESP }/User Datagram Protocol (UDP }/I nternet Protocol (IP} profile for Robust Header Compression (ROH C}; and (b) using the ESP/UDP/I P profile to compress an outer IP segment of a packet carrying Internet Protocol Security (I Psec } ESP tunnel traffic in the GAN user plane at a device; (c) using a Real-time Transport Protocol (RTP)/UDP/I P profile for ROHC between an ingress IPsec ESP tunnel endpoint and an egress IPsec ESP tunnel endpoint for additional compression of the packet including compressing an inner IP segment at s a i d d e v ic e while the ESP/UDP/IP profile is used to compress the outer IP segment of the packet; wherein said outer IP segment is decompressed before it leaves a wireless access point and said inner IP segment is decompressed before it leaves a Services Security Gateway (SeGW).

2.

A method of producing reduced packet size in a Generic Access Network GAN) user plane comprising the steps of: (a) defining Encapsulating Security Payload (ESP }/User Datagram Protocol (UDP)/I nte rn et Protocol (IP } profile for Robust Header Compression (ROH C}; (b) using the ESP/UDP/I P profile to compress an outer UDP segment, ESP segment and an outer IP segment of a packet carrying Inte rn et Protocol Security (I Psec)_ ESP tunnel traffic in the GAN user plane at a device; and (c) using a Real-time Transport Protocol (RTP)/UDP/I P profile for ROHC between an ingress IPsec ESP tunnel endpoint and an egress IPsec ESP tunnel endpoint for additional compression of the packet; wherein said outer IP segment is decompressed before it leaves a wireless access point and said inner IP segment is decompressed before it leaves a Services Security Gateway (SeGW).

A method of producing reduced packet size in a Generic Access Network GAN) user plane comprising the steps of: (a) defining an Encapsulating Security Payload (ESP }/User Datagram Protocol (UDP }/I nternet Protocol (IP} profile for Robust Header Compression (ROH C}; and (b) using the ESP/UDP/I P profile to compress an outer IP segment of a packet carrying Internet Protocol Security (I Psec } ESP tunnel traffic in the GAN user plane at a device; (c) using a Real-time Transport Protocol (RTP)/UDP/I P profile for ROHC between an ingress IPsec ESP tunnel endpoint and an egress IPsec ESP tunnel endpoint for additional compression of the packet including compressing an inner IP segment at s a i d d e v ic e while the ESP/UDP/IP profile is used to compress the outer IP segment of the packet; wherein said outer IP segment is decompressed before it leaves a wireless access point and said inner IP segment is decompressed before it leaves a Services Security Gateway (SeGW).

2.

A method of producing reduced packet size in a Generic Access Network GAN) user plane comprising the steps of: (a) defining Encapsulating Security Payload (ESP }/User Datagram Protocol (UDP)/I nte rn et Protocol (IP } profile for Robust Header Compression (ROH C}; (b) using the ESP/UDP/I P profile to compress an outer UDP segment, ESP segment and an outer IP segment of a packet carrying Inte rn et Protocol Security (I Psec)_ ESP tunnel traffic in the GAN user plane at a device; and (c) using a Real-time Transport Protocol (RTP)/UDP/I P profile for ROHC between an ingress IPsec ESP tunnel endpoint and an egress IPsec ESP tunnel endpoint for additional compression of the packet; wherein said outer IP segment is decompressed before it leaves a wireless access point and said inner IP segment is decompressed before it leaves a Services Security Gateway (SeGW).

A method of producing reduced packet size in a Generic Access Network GAN) user plane comprising the steps of: (a) defining an Encapsulating Security Payload (ESP }/User Datagram Protocol (UDP }/I nternet Protocol (IP} profile for Robust Header Compression (ROH C}; and (b) using the ESP/UDP/I P profile to compress an outer IP segment of a packet carrying Internet Protocol Security (I Psec } ESP tunnel traffic in the GAN user plane at a device; (c) using a Real-time Transport Protocol (RTP)/UDP/I P profile for ROHC between an ingress IPsec ESP tunnel endpoint and an egress IPsec ESP tunnel endpoint for additional compression of the packet including compressing an inner IP segment at s a i d d e v ic e while the ESP/UDP/IP profile is used to compress the outer IP segment of the packet; wherein said outer IP segment is decompressed before it leaves a wireless access point and said inner IP segment is decompressed before it leaves a Services Security Gateway (SeGW).

2.

A method of producing reduced packet size in a Generic Access Network GAN) user plane comprising the steps of: (a) defining Encapsulating Security Payload (ESP }/User Datagram Protocol (UDP)/I nte rn et Protocol (IP } profile for Robust Header Compression (ROH C}; (b) using the ESP/UDP/I P profile to compress an outer UDP segment, ESP segment and an outer IP segment of a packet carrying Inte rn et Protocol Security (I Psec)_ ESP tunnel traffic in the GAN user plane at a device; and (c) using a Real-time Transport Protocol (RTP)/UDP/I P profile for ROHC between an ingress IPsec ESP tunnel endpoint and an egress IPsec ESP tunnel endpoint for additional compression of the packet; wherein said outer IP segment is decompressed before it leaves a wireless access point and said inner IP segment is decompressed before it leaves a Services Security Gateway (SeGW).

A method of producing reduced packet size in a Generic Access Network GAN) user plane comprising the steps of: (a) defining an Encapsulating Security Payload (ESP }/User Datagram Protocol (UDP }/I nternet Protocol (IP} profile for Robust Header Compression (ROH C}; and (b) using the ESP/UDP/I P profile to compress an outer IP segment of a packet carrying Internet Protocol Security (I Psec } ESP tunnel traffic in the GAN user plane at a device; (c) using a Real-time Transport Protocol (RTP)/UDP/I P profile for ROHC between an ingress IPsec ESP tunnel endpoint and an egress IPsec ESP tunnel endpoint for additional compression of the packet including compressing an inner IP segment at s a i d d e v ic e while the ESP/UDP/IP profile is used to compress the outer IP segment of the packet; wherein said outer IP segment is decompressed before it leaves a wireless access point and said inner IP segment is decompressed before it leaves a Services Security Gateway (SeGW).

2.

A method of producing reduced packet size in a Generic Access Network GAN) user plane comprising the steps of: (a) defining Encapsulating Security Payload (ESP }/User Datagram Protocol (UDP)/I nte rn et Protocol (IP } profile for Robust Header Compression (ROH C}; (b) using the ESP/UDP/I P profile to compress an outer UDP segment, ESP segment and an outer IP segment of a packet carrying Inte rn et Protocol Security (I Psec)_ ESP tunnel traffic in the GAN user plane at a device; and (c) using a Real-time Transport Protocol (RTP)/UDP/I P profile for ROHC between an ingress IPsec ESP tunnel endpoint and an egress IPsec ESP tunnel endpoint for additional compression of the packet; wherein said outer IP segment is decompressed before it leaves a wireless access point and said inner IP segment is decompressed before it leaves a Services Security Gateway (SeGW).