Multi-media application processing method and device based on digital baseband processor

Abstract

Said invention discloses method and device to realize multimedia applications base on digital baseband processor. Said device includes baseband processor, protocol processor, and multimedia processing module etc. Said method includes 1, setting-up special data and program space in baseband processor for multimedia applications multimedia applications module use, 2, defining independent multimediaapplications processing task, said task using independent stack, 3, protocol processor triggering multimedia applications processing task according to multimedia data stream processing requirement, 4, under control of baseband processor, uniformly scheduling multimedia applications processing task, 5, executing multimedia applications processing task according to scheduled priority. Said invention has more clear modular division, more simple software structure, easy expansion and transplant, lower systematical density of integration, and reduced cost, capable of low, intermediate and high level terminal unit.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a digital baseband processor (DSP)-based multimedia application processing method and device. Background technique [0002] With the development of mobile communication technology, it has entered an era where mobile bandwidth initially bears multimedia services, and fierce market competition makes mobile multimedia services imperative. Multimedia services have higher requirements on terminals than traditional services. According to the requirements of next-generation multimedia applications, 3G mobile devices should support various multimedia applications. Therefore, in many mobile devices, DSP and general-purpose or RISC-based CPUs are combined to obtain powerful processing capabilities. In order to meet the processing power requirements of multimedia applications. In this way, the mobile phone or PDA can achieve the necessary processing performance with the lowest powe...

AI Technical Summary

Problems solved by technology

Usually, the high-level protocol stack (Protocol Stack) in the "protocol processor" UMTS / GSM / GPRS procesor contains this part of the function; however, figure 2 In the solution shown in , this part of the function must be stripped from the Protocol Stack, and it needs to be redesigned. This change leads to more signaling and data interaction between the two processors, and greatly increases the digital baseband processing. The complexity of software design

[0006] In solution (2), because the digital baseband processing involves all physical layer processes of 3GPP, the internal scheduling of the digital baseband processing module itself is very complicated; if we consider some functions of the protocol stack, that is: realize part of the protocol stack at the physical layer ( Such as: MAC) function, the system will be more complex, not only difficult to realize, the module division is not clear, and it is not easy to upgrade and maintain, and even affect the stability of the system

At the same time, under this solution, the process of processing pure 12.2K voice and multimedia voice is complicated, the encryption and decryption process of voice data is complicated, the scalability and portability of the product are poor, and it is difficult to apply to different platforms, etc.

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