Method for implementing Iu-Flex based MBMS
First Claim
1. A method for implementing a Multimedia Broadcast/Multicast Service (MBMS) in a network environment having an intra-domain connection of Radio Access Network (RAN) nodes to multiple Core Network (CN) nodes, the method comprising:
- a Serving GPRS (General Packet Radio Services) Support Node (SGSN) sending an RAB request for a Radio Access Bearer (RAB) connection to a Radio Network Controller (RNC);
the RNC establishing a corresponding RAB request for multicast traffic, the corresponding RAB request corresponding to the RAB request, the SGSN sending the corresponding RAB request according to the RAB request;
the RNC detecting when a plurality of multicast traffics are requested by other SGSNs;
when a plurality of multicast traffics are requested by the other SGSNs, the RNC choosing an SGSN as a primary SGSN and deeming the RAB between the primary SGSN and the RNC as a primary path to receive multicast traffic and to maintain connections to secondary SGSNs; and
transmitting the multicast traffic through the primary SGSNs.
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Abstract
A method is provided for implementing Iu-Flex-Based MBMS. A SGSN sends an RAB request to an RNC. The RNC establishes a corresponding RAB for the multicast traffic according to the request and the SGSN sending the request. At the same time, if the RNC detects that a plurality of multicast traffics from other SGSNs correspond to a multicast traffic, the RNC will choose an SGSN as the primary SGSN, take the RAB between the primary SGSN and itself as the primary path to receive the multicast traffic, and maintain the connections to other SGSN. Transmission of the multicast traffic is then performed through the primary SGSN, during the multicast traffic transmission process. The RNC may change the primary SGSN when necessary, receive multicast traffic through the RAB of the new primary SGSN, and maintain the connections to other SGSNs. In this method, multicast traffics can be implemented simply and reliably. The method also helps to reduce consumption of network resources and improve network security and accounting management.
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Citations
10 Claims
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1. A method for implementing a Multimedia Broadcast/Multicast Service (MBMS) in a network environment having an intra-domain connection of Radio Access Network (RAN) nodes to multiple Core Network (CN) nodes, the method comprising:
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a Serving GPRS (General Packet Radio Services) Support Node (SGSN) sending an RAB request for a Radio Access Bearer (RAB) connection to a Radio Network Controller (RNC);
the RNC establishing a corresponding RAB request for multicast traffic, the corresponding RAB request corresponding to the RAB request, the SGSN sending the corresponding RAB request according to the RAB request;
the RNC detecting when a plurality of multicast traffics are requested by other SGSNs;
when a plurality of multicast traffics are requested by the other SGSNs, the RNC choosing an SGSN as a primary SGSN and deeming the RAB between the primary SGSN and the RNC as a primary path to receive multicast traffic and to maintain connections to secondary SGSNs; and
transmitting the multicast traffic through the primary SGSNs. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification