A.頭壓縮與解壓縮 B.用戶(hù)面數(shù)據(jù)和控制面數(shù)據(jù)加密 C.用戶(hù)面數(shù)據(jù)傳輸 D.低層SDU的重復(fù)檢測(cè)
A.MMERRC B.RNCRRC C.eNodeBPDCP D.eNodeBRRC
A.MME B.SGW C.PGW D.UE