Internet Protocol Address Registration

1. A residential gateway (RG) positioned in a local fixed network, wherein the RG comprises: at least one receiver configured to: receive an Internet Protocol (IP) version six (IPv6) prefix; and receive address requests from a plurality of hosts, wherein the plurality of hosts comprise a visiting 3rd Generation Partnership Project (3GPP) mobile host; a processor coupled to the receiver and configured to allocate IPv6 addresses to each of the plurality of hosts based on the IPv6 prefix; and at least one transmitter coupled to the processor and configured to transmit an address registration request to an IP edge node on behalf of the visiting host, wherein the address registration request comprises the IPv6 address of the visiting host and an identifier assigned to the visiting host, wherein the identifier is not assigned to any other host in the local fixed network, wherein the receiver is further configured to receive an address registration reply from the IP edge node for the visiting host, wherein the address registration reply comprises the IPv6 address of the visiting host and the identifier of the visiting host, and wherein the address registration reply indicates successful registration of the visiting host IP address with the RG.

2. The RG of claim 1 , wherein the identifier comprises a media access control (MAC) address associated with the visiting host, and wherein the receiver is further configured to receive the MAC address in a Dynamic Host Configuration Protocol (DHCP) request from the visiting host.

3. The RG of claim 1 , wherein the RG is configured to: participate in a 3GPP authentication protocol to authenticate the visiting host with a mobile network associated with the visiting host; and receive, from the mobile network, a subscription identifier (ID) associated with the visiting host, wherein the identifier of the address registration request comprises the subscription ID.

4. A residential gateway (RG) positioned in a local fixed network, wherein the RG comprises: at least one receiver configured to: receive an Internet Protocol (IP) version six (IPv6) prefix; and receive address requests from a plurality of hosts, wherein the plurality of hosts comprise a visiting 3rd Generation Partnership Project (3GPP) mobile host; a processor coupled to the receiver and configured to allocate IPv6 addresses to each of the plurality of hosts based on the IPv6 prefix; and at least one transmitter coupled to the processor and configured to transmit an address registration request to an IP edge node on behalf of the visiting host, wherein the address registration request comprises the IPv6 address of the visiting host and an identifier assigned to the visiting host, wherein the identifier is not assigned to any other host in the local fixed network, wherein the receiver is further configured to receive an address registration reply from the IP edge node for the visiting host, wherein the address registration reply comprises the IPv6 address of the visiting host and the identifier of the visiting host, wherein the address registration reply initiates an establishment of an IP Connectivity Access Network (IP-CAN) session of an IP-CAN session associated with the RG, and wherein the IP-CAN session is associated with the visiting host and not associated with any other host in the local fixed network.

5. The RG of claim 4 , wherein the identifier of the visiting host comprises a subscription identifier (ID) associated with the visiting host and received during an authentication procedure, a Media Access Control (MAC) address of the visiting host, an identifier of a line by which the host is connected to the RG, or combinations thereof.

6. The RG of claim 4 , wherein the RG is configured to: detect that the visiting host has disconnected from the RG; and transmit an indication of host disconnection message to the IP edge node to request termination of the IP-CAN session associated with the visiting host, wherein the indication of host disconnection message comprises the visiting host's IPv6 address and identifier.

7. The RG of claim 6 , wherein the receiver is further configured to receive an address termination acknowledgement message indicating the termination of the IP-CAN session associated with the visiting host is successful, wherein the address termination acknowledgement message comprises the visiting host's IPv6 address and identifier.

8. A method implemented in an Internet Protocol (IP)-edge node positioned in a fixed access network, the method comprising: receiving an address registration request from a residential gateway (RG), wherein the address registration request comprises an IP version six (IPv6) address of a visiting 3rd Generation Partnership Project (3GPP) mobile host connected to a local fixed network associated with the RG and an identifier assigned to the visiting host and not to any other host in the local fixed network; establishing an IP Connectivity Access Network (IP-CAN) sub-session for the visiting host; and managing quality of service (QoS) for the visiting host independently of other hosts in the local fixed network by managing the visiting host IP-CAN sub-session, wherein establishing the IP-CAN sub-session for the visiting host comprises transmitting an IP-CAN establishment message to a Policy and Charging Rules Function (PCRF) node, and wherein the IP-CAN establishment message comprises the IPv6 address of the visiting host and a line identifier (ID) that identifies a link between the IP-edge node and the RG.

9. The method of claim 8 , wherein the IP-CAN establishment message comprises a Subscription ID field, and wherein the Subscription ID field is set to a Media Access Control (MAC) address of the visiting host when the visiting host is not authenticated prior to transmission of the IP-CAN establishment message.

10. The method of claim 8 , wherein establishing the IP-CAN sub-session for the visiting host further comprises receiving an acknowledgment message from the PCRF node indicating establishment of the IP-CAN sub-session for the visiting host, and wherein the method further comprises transmitting an address registration reply to the RG, wherein the address registration reply comprises the IPv6 address of the visiting host and the identifier of the visiting host, and wherein the address registration reply indicates the establishment of the IP-CAN sub-session associated for the visiting host.

11. The method of claim 8 , further comprising: receiving an indication of host disconnection from the RG requesting termination of the visiting host IP-CAN sub-session; and transmitting an IP-CAN session termination message to the PCRF node based on the indication of disconnection, and wherein the IP-CAN session termination message comprises the visiting host's identifier, the IPv6 address of the visiting host, and a line ID that identifies a link between the IP-edge node and the RG.

12. The method of claim 8 , further comprising establishing an IP-CAN session for the RG prior to establishing an IP-CAN session for the visiting host, and wherein the visiting host IP-CAN session is established as a sub-session of the RG IP-CAN session.

13. The method of claim 12 , further comprising: receiving an indication of host disconnection from the RG requesting termination of the IP-CAN session associated with the visiting host; and transmitting an IP-CAN sub-session modification message to the PCRF node based on the received indication of host disconnection, wherein the IP-CAN session modification message comprises the visiting host's identifier, the IPv6 address of the visiting host, and a line ID that identifies a link between the IP-edge node and the RG, and wherein the IP-CAN session modification message indicates a request to terminate the visiting host IP-CAN session without terminating the RG IP-CAN session.

14. The method of claim 8 , further comprising: detecting that the visiting host has disconnected from the fixed access network; transmitting an IP-CAN session termination message to the PCRF node based on the detection of the visiting host disconnection, wherein the IP-CAN session termination message comprises the visiting host's identifier, the IPv6 address of the visiting host, and a line ID that identifies a link between the IP-edge node and the RG; and transmitting an indication of host disconnection to the RG requesting a release of all resources allocated to the visiting host, and wherein the indication of host disconnection comprises the visiting host's identifier and the visiting host IPv6 address.

15. The method of claim 8 , further comprising receiving an IP-CAN session termination message from the PCRF node, wherein the IP-CAN session termination message comprises the visiting host's Subscription ID, the IPv6 address of the visiting host, and a line ID that identifies a link between the IP-edge node and the RG.

16. A method implemented in an Internet Protocol (IP)-edge node positioned in a fixed access network, the method comprising: receiving an address registration request from a residential gateway (RG), wherein the address registration request comprises an IP version six (IPv6) address of a visiting 3rd Generation Partnership Project (3GPP) mobile host connected to a local fixed network associated with the RG and an identifier assigned to the visiting host and not to any other host in the local fixed network; establishing an IP Connectivity Access Network (IP-CAN) sub-session for the visiting host; and managing quality of service (QoS) for the visiting host independently of other hosts in the local fixed network by managing the visiting host IP-CAN sub-session, wherein establishing the IP-CAN sub-session for the visiting host comprises transmitting a Broad Band Forum (BBF) session establishment message to a Broadband Policy Control Framework (BPCF) Policy Decision Point (PDP) node positioned in the fixed access network, and wherein the BBF session establishment message comprises the visiting host's identifier, the IPv6 address of the visiting host, and a line identifier (ID) that identifies a link between the IP-edge node and the RG.

17. A method implemented in a residential gateway (RG) positioned in a local fixed network, wherein the method comprises: receiving a communication from a host connected to the local fixed network directed toward a server in an upstream network; forwarding the communication toward the server by employing an Internet Protocol (IP) address associated with the RG as a source of the communication; transmitting an address registration request, separate from the host communication, to the server to register an IP address of the host with the server, wherein the address registration request comprises the host IP address and an identifier associated with the host; and receiving an address registration reply from the server indicating that the host IP address is registered with the server, wherein the address registration reply comprises the host IP address and the identifier.

18. The method of claim 17 , wherein the identifier is a subscription identifier (ID).

19. The method of claim 17 , wherein the local fixed network is an IP version four (IPv4) network, and wherein the upstream network is an IP version six (IPv6) network.