3GPP技术标准文档 Release 15 22系列技术标准 3GPP TS 22.XXX V15
3GPP技术标准文档Release1522系列技术标准3GPPTS22.XXXV153rdGenerationPartnershipProject;TechnicalSpecificationGroupServicesandSystemAspects;PrinciplesofcircuittelecommunicationservicessupportedbyaPublicLandMobileNetwork(PLMN)(Release15)Keywords：LTE,GSM,UMTS,service
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