Method for realizing multi-casting roam

Abstract

The method divides each serving region of multicast service into multicast service region and carries on identification for the multicast service region. The multicast service request is sent by the user to network through multicast service context (MBMS context) with different parameter according to service requirement and IP multicast address, name of switch in point (APN) and identification of the multicast service region are included in the said parameter. The multicast service region selected by the user can be confirmed by the network as per the user's request and the data of the selected multicast service region can be broadcasted to the user. By applying the method, nometter whether the user is on the roaming state or not, the one can realize the real multicast service roaming.

Description

technical field [0001] The invention relates to a method for realizing multicast service roaming in a mobile communication network. Background technique [0002] The application of broadcast / multicast service (MBMS) technology in the mobile network makes the data packets on the same path only need to be transmitted once according to the service content, instead of being transmitted multiple times according to the number of subscribers, so that the network can be effectively used resource. In order to realize the roaming of multicast services, the 3rd generation mobile communication standards organization (3GPP) divides each multicast service area into multiple multicast service areas, so that multicast data can be broadcast to multicast groups in these multicast service areas . In this way, when using the existing method to realize multicast service roaming, the user first uses the multicast service context (MBMS Context) including the IP multicast address and the access p...

AI Technical Summary

Problems solved by technology

It can be seen from the above that, with the existing method, no matter whether the user is in the home area or roaming in other places, the user uses the same MBMS Context to apply for the multicast service, and can only apply for local service data, and cannot freely select the multicast service area. Also unable to access attribution business data

The reason for the above problems is that users use the same MBMS Context to identify services. Even if users can successfully apply for foreign services, when the service center sends data through the network, because the MBMS Contexts of foreign services and local services are the same, the network will consider This is the same service for the same user, so only one multicast connection is maintained, so the user still cannot receive the foreign and local data of the same service at the same time

Therefore, the existing methods for implementing multicast service roaming cannot fully meet the roaming needs of users because they cannot freely select a multicast service area, and cannot apply for receiving service data from other places and home places.

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