The Research And Implement On Key Technologies Of Virtual High-capacity Card Services

High—capacity SIM card UIM card as an upgrade,SO that the UIM card capacity multimedia services barriersare breached,the development ofthe UIM card into a large—capacity high-speed communication era．High—capacitySIM card is facing many serious challenges．In terms ofcost,a substantial increase in capacity to increase the priceofthe card．The other problem is the phone interoperability problems,only a few cell phone models usinghigh··speed network interface can communicate with the UIM and support high··speed mobile--UIM communicationinterface(such as USB or MMC),SO the cost of existing large—capacity high—UIM card,users can not easily be usedto promote effortsto small．This research is based on virtual technology to achieve high-capacity UIM card features large capacity UIMcard program．The SO-called virtual high—capacity card,referring to the SD card through a smart combination ofUIM card,through international SCWS technology to ensure the normal communication of both cards,Completepart of their separate functions:SIM card for network authentication；SD to achieve large-capacity storage；bysoftware built-in security chip SD card and SIM card binding．Paper first describes the application of large-capacity card UIM business background,technical solutions,business models and application prospects．After the UIM card from the current capacity problems in existingimplementations,this paper proposes a virtual high—capacity UIM card technology solutions to large business U1Mproposed a new implementation direction．Thesis that the application ofvirtual high-capacity cards in the basic maintenance ofexisting hardwarestructure unchanged,through the software upgrade to most ofthe UIM card features large capacity,cost savings,convenient for users,but also conducive to value—added service operators rapid promotion．...