Method for implementing Iu-Flex based MBMS

Multiplex communications – Communication over free space – Combining or distributing information via code word channels...

Reexamination Certificate

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Details

C370S390000, C370S432000, C455S524000, C455S525000

Reexamination Certificate

active

07457275

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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“3rd Generation Partnership Project; Technical Specification Group Services and System Aspects; Multimedia Broadcast/Multicast Service; Architecture and Functional Description (Release 5)” 3GPP TR 23.846 0.3.0, Apr. 2, 2002, pp. 1-20, XP002249708.
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“3rd Generation Partnership Project; Technical Specification Group Services and System Aspects; Multimedia Broadcast/Multicast Service; Architecture and Functional Description (Release 6)” 3GPP TR 23.846 2.0 0, Sep. 8 2002, pp. 1-114.

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