Transmission method for conversation data in group broad cast / broadcast service

Abstract

This invention discloses a transmission method for conversation data in multicast service. After a communication terminal finds out there are conversation data in multicast service. After a communication terminal finds out there are conversation data that have not been received by it, it sends a re-sent request to a belonged wireless network controller, which receives the request to deliver the re-sent request carried with conversation information to belonged service support enter which fetches necessary repeat conversation data then to send a conversation data start information to the network controller, which receives the start information to feed back the data start to the support center to receive response and set up planar resource to re-transmit conversation data via the planar resource.

Description

technical field [0001] The invention relates to data transmission technology, in particular to a transmission method applied to session data in multicast / broadcast services. Background technique [0002] With the development of the third-generation mobile communication technology, the third-generation mobile communication can provide services with a higher data transmission rate than the second-generation mobile communication, so that the third-generation mobile communication can support various business forms, such as video calls, picture downloads, etc. , high-speed browsing the Internet (Internet), etc. The third-generation mobile communication supports a business form in which certain information is simultaneously sent to users who have subscribed to certain information in the wireless network, such information can be weather forecasts, news clips, sports game highlights, etc. According to the characteristics of simultaneous transmission of the above-mentioned services,...

AI Technical Summary

Problems solved by technology

[0007] However, simple retransmission of session data cannot ensure that the communication terminal receives the corresponding session data. However, multiple retransmissions of session data will inevitably cause waste of network resources, making multicast / broadcast services save network resources. Greatly weakened and increased investment costs for multicast / broadcast services

Moreover, in the entire wireless network, the network conditions in various regions are not consistent. The network performance in some wireless coverage areas is better, and communication terminals located in these areas can correctly receive session data; the network performance in some wireless coverage areas is poor. communication terminal cannot receive session data correctly

At present, there is no mechanism for selectively retransmitting session data. When retransmitting session data, it is not carried out for the wireless area or communication terminal that needs to retransmit session data, but is carried out in the entire multicast group or the entire wireless network. Session Data retransmission includes areas that do not require session data retransmission, wasting network resources

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