(Although the issuance of 3G network license plates in my country has been pushed again and again, with the gradual opening of large-scale commercial use of 3G systems around the world, it is an inevitable trend to build 3G networks in my country, and major telecom operators are also actively preparing for the construction of 3G networks. . How to choose technical standards in 3G network construction, how to evolve the network, and how to continue to use the resources of the second generation mobile communication system, these are the principle issues that should be considered first.)
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