<p>The present invention provides means and methods allowing end users of multimedia terminals in a cellular mobile packet switched network to dynamically create real time duplex communication channels to other terminals forming communication groups. The invention also provides efficient multicast functionality in cellular mobile packet switched networks. According to the invention, all applications sharing the same group identity are allocated virtual communication paths between them. This is made possible by letting end users register group identities in specific virtual switching nodes, said group identities being associated with particular applications. In one embodiment, the virtual switching nodes are placed inside the operators cellular packet switched network on a private address known by all applications and interconnected through complementary switching nodes through a private backbone network. In this way, a very high degree of security and reliability for the offered group communications and services is obtained.</p>
申请公布号
WO2004066554(A1)
申请公布日期
2004.08.05
申请号
WO2004SE00078
申请日期
2004.01.21
申请人
TELIA AB (PUBL);HOROWITZ, BRUCE;MAGNUSSON, NILS-GOERAN;SOEDERSTROEM, GUSTAV;JOHANSSON, STEFAN;NICCOLAI, STEFAN
发明人
HOROWITZ, BRUCE;MAGNUSSON, NILS-GOERAN;SOEDERSTROEM, GUSTAV;JOHANSSON, STEFAN;NICCOLAI, STEFAN