Authentication management information timing receiving method and terminal

Abstract

The invention provides a timing receiving method of entitlement management message. The method comprises that a network side distributes user labels SN for terminals one-to-one, corresponding to the terminals needed to receive entitlement management messages EMM, and sends the total number and the length information of the EMM to the terminals, the network side carries the SN of the terminal corresponding to the EMM in the EMM, and the EMM is in carousel according to an arranged order of the SN appointed with the terminal, after access, the terminal receives the EMM, according to the SN carried in the received EMM, the SN of the terminal, the arranged order of the SN, the total number of the EMM and the length information of the EMM, the time period for receiving the EMM corresponding to the terminal is confirmed, and the EMM is received in the time period. The invention further provides a terminal to realize the method, thereby largely reducing the receiving and the analysis of the EMM irrelevant to the terminal, saving the terminal source and reducing the battery consumption of the terminal.

Description

technical field [0001] The invention belongs to the technical field of mobile multimedia broadcasting, and in particular relates to a method and a system for receiving authorization management information of a conditional access system. Background technique [0002] In recent years, the development of mobile multimedia broadcasting technology has made the establishment of professional channels and diversified charging methods an important aspect of mobile multimedia broadcasting technology. To establish charging channels, the key technology is to have the support of encryption technology. Through information encryption technology, the legitimate rights and interests of viewers and the interests of operators can be protected from a technical point of view. [0003] Conditional Access (CA) is the core technical guarantee of encryption control of mobile multimedia broadcasting technology. users cannot use this service. [0004] The conditional access system itself is a compre...

AI Technical Summary

Problems solved by technology

Of course, the conditional access system authorization management center will send EMMs in a group-like manner to reduce data traffic, but for terminals, obtaining EMMs from data broadcasts consumes too much resources, and users can only passively receive all EMM data Broadcast until an EMM encrypted with the user's user key is received

[0010] This approach increases the processing burden of the terminal, greatly wastes terminal resources, increases the amount of network data, and it is unknown whether all terminals can reliably obtain EMM, which is not conducive to the promotion of conditional access systems.

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