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 | 30/10/2011 | ISLD-201109-010 | INTERDIGITAL INC |
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| 4G,3G | 30/12/2019 | ISLD-201912-087 | INTERDIGITAL INC |
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Specification Information
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| Publication No | Technology | Declaration Information | Specification Information | Explicitly Disclosed | Patent Type | Status | National Phase Entries | |||||
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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 wireless transmit receive unit (WTRU) comprising:', 'a receiver configured to receive a first Internet Protocol (IP) address that is for unicast services and a second IP address that is for multicast services; a processor configured to use the first IP address for the unicast services and the second IP address for the multicast services; and', 'a transmitter configured to transmit a router solicitation message to a serving mobile access gateway (MAG) triggering proxy binding update (PBU) messages that includes the second IP address.
2. The WTRU as in claim 1 wherein the transmitter is further configured to inform the serving MAG of imminent handover (HO) .
3. The WTRU as in claim 2 wherein the WTRU is configured to move from the serving MAG to a next MAG via a predefined interface.
4. The WTRU as in claim 1 wherein the processor is further configured to update policy profile of the WTRU according to IPv6 addresses of a local mobility anchors (LMAs) .
5. The WTRU as in claim 1 wherein the WTRU uses multicast listener discovery/internet group management protocol (MLD/IGMP) messages to indicate to the serving MAG its request for multicast services.
6. A method for a proxy mobile Internet Protocol (PMIP) supporting dedicated multicast local mobility anchors (LMAs), the method comprising: a first LMA assigning a first set of Internet Protocol (IP) addresses to a wireless transmit receive unit (WTRU) dedicated for both unicast services and multicast services; and', 'the first LMA receiving a trigger from a mobile access gateway (MAG) indicating a proxy binging update (PBU) message.
7. The method as in claim 6 wherein the first LMA assigning the first set of IP addresses to the WTRU for the unicast services and a second LMA assigning a second set of IP addresses for the multicast services.
8. The method as in claim 7 wherein the first LMA receiving a trigger from a first MAG indicating a first PBU message from the first MAG, and the second LMA receiving a trigger from a second MAG indicating a second PBU message from the second MAG.
9. The method as in claim 8 wherein on a condition that an existing 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 PBU message
10. The method as in claim 7 wherein the first LMA and the second LMA initiating establishment of an unicast tunnel and a multicast tunnel
11. The method as in claim 10 wherein the multicast tunnel is unidirectional for downlink only traffic or bidirectional traffic
12. A method for a proxy mobile Internet Protocol (PMIP) supporting mobile access gateways (MAGs), the method comprising:', 'a first MAG routing a first set of Internet Protocol (IP) addresses to a wireless transmit receive unit (WTRU) dedicated for both unicast services and multicast services;', 'the first MAG receiving a router solicitation message from the WTRU; and the first MAG triggering proxy binding update (PBU) message that includes multicast information to a first local mobility anchor (LMA)
13. The method as in claim 12 wherein the first MAG routing a first set of IP addresses to the WTRU dedicated for the unicast services and the first MAG routing a second set of IP addresses to the WTRU dedicated the multicast services
14. The method as in claim 13 wherein the first MAG triggering an indication of a first PBU message to a first LMA and a second PBU message to a second LMA
15. The method as in claim 14 wherein the first MAG maintaining a new PBU message list that includes binding of the WTRU with the first LMA and the second LMA
16. The method as in claim 15 wherein the first MAG discriminates between an unicast service traffic and a multicast service traffic to forward traffic to an appropriate interface
17. The method as in claim 16 wherein the first MAG initiating establishment of an unicast tunnel and a multicast tunnel
18. The method as in claim 17 wherein the multicast tunnel is unidirectional for downlink only traffic or bidirectional traffic.']
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