Method for self-adaption adjusting receiving speed to buffer play by a mobile multimedia broadcast terminal

Abstract

The invention discloses a method for self adapting and adjusting the receiving velocity buffering play of a mobile multimedia broadcasting terminal, and improves the service quality of a mobile multimedia broadcasting network. The method comprises the following steps: periodically detecting a network state; calculating a receiving velocity factor which indicates the grade of the code rate of received audio and video frequency data according to the network state; arranging a buffering queue; conducting de-multiplexing for received broadcasting modulation data to obtain the audio and video frequency data; selectively decoding the audio and video frequency data according to the receiving velocity factor and storing the audio and video frequency data into the buffering queue; and playing the audio and video frequency data after the audio and video frequency data is decoded in the buffering queue. The method has the advantages that buffering data in the buffering queue can be played on thecondition that signals interrupt momentarily.

Description

technical field [0001] The invention relates to mobile multimedia broadcasting technology, in particular to a method for a mobile multimedia broadcasting terminal to adaptively adjust receiving rate, buffer and play. Background technique [0002] With the continuous development of mobile communication and digital TV services, the mobile TV service is considered to be one of the "killer" applications in the third generation mobile communication (3G) era, and has attracted much attention from the industry. The mobile TV service can become an integrated service provided by the cooperation between the mobile communication industry and the radio and television industry. Mobile operators can maximize the use of network capabilities and user management capabilities to provide richer services; broadcasters can make full use of content resources, expand user coverage, and realize the mobility of broadcast networks. At present, the number of mobile phone users in my country is close ...

AI Technical Summary

Problems solved by technology

[0003] Transmitting audio and video data in a wireless environment with frequent interference, bit errors, and packet loss, and network service instability and unreliability will affect the normal use and expansion of users

For the existing mobile TV based on radio and television network technology, due to factors such as incomplete coverage, unstable signal, and weak transmission interference caused by bad weather in the initial stage of network construction, the phenomenon of unstable reception of mobile TV terminals will be inevitable, and the network has not yet been optimized. for a considerable period of time

[0004] In addition, existing mobile multimedia broadcasting receiving terminals receive broadcasting and television signals in real time. Once the network is unstable, such as poor signal reception occurring more than 3 times per minute and lasting for about 4 seconds, the downlink received signal strength indicator (RSSI ) is lower than the signal threshold, it is prone to intermittent problems when the program is played

Moreover, when switching channels, the user must first disconnect the original channel, and then connect and receive the new channel. During this period, the TV of the original channel cannot be played, and the user waits for a long time.

[0005] To sum up, in the prior art, the quality of service (QoS) of the mobile multimedia broadcasting network is low, and defects such as intermittent broadcasting of programs have greatly affected the viewing experience of mobile multimedia users, which is an important technical problem to be solved urgently.

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