Abstract
A method and an apparatus for a proxy mobile Internet protocol (PMIP) supporting a dedicated multicast local mobility anchor (LMA) and mobile access gateway (MAG) is provided. The LMA assigns an Internet Protocol (IP) address to a wireless transmit receive unit (WTRU) that processes the IP address and sends a router solicitation message to a serving MAG. A WTRU is disclosed to receive a first IP address that is for unicast service and a second IP address that is for multicast services. Generally the method and apparatus proposes architecture interfaces and procedures to enable multicast mobility using Proxy Mobile IP. More specifically operations of aggregated PMIP tunnels for multicast services are described. Multicast mobility is enabled when mobile nodes move from one MAG to another MAG intra-LMA and inter-LMA. And Multicast mobility is enabled between bidirectional network and downlink only multicast network in a hybrid network.
| Technology | Declaration Information | Specification Information | Explicitly Disclosed | Patent Type | |||||
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| 4G,3G | 30/12/2019 | ISLD-201912-087 | INTERDIGITAL INC |
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Specification Information
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Technologies
Mobility and handover Broadcast/Multicast
Product
Gateway node
Use Cases
Wireless communication
Services
Multimedia broadcast/multicast service (MBMS)
Claim
1. A method for a proxy mobile Internet Protocol (PMIP) supporting a mobile access gateway (MAG), the method comprising:
receiving a first packet with a first Internet Protocol (IP) address from a first local mobility anchor (LMA) and a second packet with a second IP address from a second LMA, wherein the first LMA is a multicast LMA for multicast traffic and the second LMA is a unicast LMA for unicast traffic;
routing the first packet and the second packet to a wireless transmit/receive unit (WTRU) utilizing both unicast services and multicast services;
receiving a router solicitation message from the WTRU; and
maintaining a binding update list including entries for a binding of the WTRU with the first LMA and the second LMA.', 'receiving a first packet with a first Internet Protocol (IP) address from a first local mobility anchor (LMA) and a second packet with a second IP address from a second LMA, wherein the first LMA is a multicast LMA for multicast traffic and the second LMA is a unicast LMA for unicast traffic;', 'routing the first packet and the second packet to a wireless transmit/receive unit (WTRU) utilizing both unicast services and multicast services;', 'receiving a router solicitation message from the WTRU; and', 'maintaining a binding update list including entries for a binding of the WTRU with the first LMA and the second LMA.
2. The method as in claim 1 further comprising triggering an indication of a first proxy binding update (PBU) message to the first LMA and a second PBU message to the second LMA.
3. The method as in claim 1 further comprising discriminating between a unicast service traffic and a multicast service traffic to forward traffic to an appropriate interface.
4. The method as in claim 3 further comprising initiating establishment of a unicast tunnel and a multicast tunnel.
5. The method as in claim 4 wherein the multicast tunnel is unidirectional for downlink only traffic or bidirectional traffic.
6. A mobile access gateway (MAG) comprising:
a first receiver configured to receive a first packet with a first Internet Protocol (IP) address from a first local mobility anchor (LMA) and a second packet with a second IP address from a second LMA, wherein the first LMA is a multicast LMA for multicast traffic and the second LMA is a unicast LMA for unicast traffic;
a router configured to route the first packet and the second packet to a wireless transmit/receive unit (WTRU) utilizing both unicast and multicast services;
a second receiver configured to receive a router solicitation message from the WTRU; and
a processor configured to maintain a binding update list including entries for a binding of the WTRU with the first LMA and the second LMA.', 'a first receiver configured to receive a first packet with a first Internet Protocol (IP) address from a first local mobility anchor (LMA) and a second packet with a second IP address from a second LMA, wherein the first LMA is a multicast LMA for multicast traffic and the second LMA is a unicast LMA for unicast traffic;', 'a router configured to route the first packet and the second packet to a wireless transmit/receive unit (WTRU) utilizing both unicast and multicast services;', 'a second receiver configured to receive a router solicitation message from the WTRU; and', 'a processor configured to maintain a binding update list including entries for a binding of the WTRU with the first LMA and the second LMA.
7. The MAG as in claim 6 wherein the processor is further configured to trigger an indication of a first proxy binding update (PBU) message to the first LMA and a second PBU message to the second LMA.
8. The MAG as in claim 6 wherein the processor is further configured to discriminate between a unicast service traffic and a multicast service traffic to forward traffic to an appropriate interface.
9. The MAG as in claim 8 wherein the processor is further configured to initiate establishment of a unicast tunnel and a multicast tunnel
10. The MAG as in claim 9 wherein the multicast tunnel is unidirectional for downlink only traffic or bidirectional traffic
11. A unicast local mobility anchor (LMA) comprising:
a processor configured to assign a packet with an Internet Protocol (IP) address to a wireless transmit/receive unit (WTRU), wherein the IP address is utilized for unicast services and the processor is further configured to initiate establishment of an aggregated multicast tunnel;
a receiver configured to receive data from a server; and
a transmitter configured to transmit the received data to the WTRU through a mobile access gateway (MAG) using the aggregated multicast tunnel.', 'a processor configured to assign a packet with an Internet Protocol (IP) address to a wireless transmit/receive unit (WTRU), wherein the IP address is utilized for unicast services and the processor is further configured to initiate establishment of an aggregated multicast tunnel;', 'a receiver configured to receive data from a server; and', 'a transmitter configured to transmit the received data to the WTRU through a mobile access gateway (MAG) using the aggregated multicast tunnel
12. The unicast LMA as in claim 11 wherein on a condition that an existing proxy binding update (PBU) message is used, a new variable-length of multicast options field is added to the existing PBU message, and wherein a multicast flag is added in the existing PBU message
13. The unicast LMA as in claim 11 wherein the aggregated multicast tunnel is unidirectional for downlink only traffic or bidirectional traffic
14. A multicast local mobility anchor (LMA) comprising:
a processor configured to assign a packet with an Internet Protocol (IP) address to a wireless transmit/receive unit (WTRU), wherein the IP address is utilized for multicast services and the processor is further configured to initiate establishment of an aggregated multicast tunnel;
a receiver configured to receive data from a server; and
a transmitter configured to transmit the received data to the WTRU through a mobile access gateway (MAG) using the aggregated multicast tunnel.', 'a processor configured to assign a packet with an Internet Protocol (IP) address to a wireless transmit/receive unit (WTRU), wherein the IP address is utilized for multicast services and the processor is further configured to initiate establishment of an aggregated multicast tunnel;', 'a receiver configured to receive data from a server; and', 'a transmitter configured to transmit the received data to the WTRU through a mobile access gateway (MAG) using the aggregated multicast tunnel
15. The multicast LMA as in claim 14 wherein on a condition that an existing proxy binding update (PBU) message is used, a new variable-length of multicast options field is added to the existing PBU message, and wherein a multicast flag is added in the existing PBU message
16. The multicast LMA as in claim 14 wherein the aggregated multicast tunnel is unidirectional for downlink only traffic or bidirectional traffic.']
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