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:
- sending a request to establish a Radio Access Bearer (RAB) connection for multicast traffic from each of a plurality of Serving GPRS (General Packet Radio Services) Support Nodes (SGSNs) to a Radio Network Controller (RNC);
establishing a RAB connection for multicast traffic between the RNC and each of the SGSNs according to the request;
detecting by the RNC whether multicast traffic from more than one of the SGSNs corresponds to the same multicast service;
if yeschoosing one of the SGSNs as a primary SGSN, deeming the RAB connection between the primary SGSN and the RNC as a primary path to receive the multicast traffic, deeming the remaining SGSNs as secondary SGSNs, and maintaining RAB connections between the secondary SGSNs and the RNC by sending a minimum data volume or zero data volume from the secondary SGSNs to the RNC; and
transmitting the multicast traffic to the RNC through the primary SGSN.
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Accused Products
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
9 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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sending a request to establish a Radio Access Bearer (RAB) connection for multicast traffic from each of a plurality of Serving GPRS (General Packet Radio Services) Support Nodes (SGSNs) to a Radio Network Controller (RNC); establishing a RAB connection for multicast traffic between the RNC and each of the SGSNs according to the request; detecting by the RNC whether multicast traffic from more than one of the SGSNs corresponds to the same multicast service;
if yeschoosing one of the SGSNs as a primary SGSN, deeming the RAB connection between the primary SGSN and the RNC as a primary path to receive the multicast traffic, deeming the remaining SGSNs as secondary SGSNs, and maintaining RAB connections between the secondary SGSNs and the RNC by sending a minimum data volume or zero data volume from the secondary SGSNs to the RNC; and transmitting the multicast traffic to the RNC through the primary SGSN. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification