So the error handling of wireless channel, accurate network status estimation and effective error control measures are important ways of improving the multimedia data transmission. The key is that the 3G network contains many layers, although end-to-end multimedia transmission in the single layer can reach the best, is not so obvious to achieve in the multilayer. At present ARQ (Automatic Repeat Request) and FEC (Forward Error Correction) are two basic kinds of correcting mechanism, because of high requirement of the delay of the real-time application so FEC is generally recommended for using. However, FEC also have constant transmission costs when the channel data lost a few. Although the efficiency of the FEC is higher than ARQ, the real-time service is intolerable to extra spending of the retransmission of lost data [2].