用戶層 (User plane protocols)
控制層 (Control plane protocols)
PLMN Identity:? A Public Land Mobile Network is uniquely identified by its PLMN Identity
GUTI: Globally Unique Temporary UE Identity
GUMMEI: Globally Unique MME Identifier
GUTI = GUMMEI + M-TMSI (32bits)
GUMMEI = MCC + MNC + MME Identifier
MMEI = MME Group ID (MMEGI 16bits) + MME Code (MMEC 8bits)
S-TMSI = MMEC + M-TMSI?
ECGI: E-UTRAN Cell Global Identifier
? ? ?used to identify cells globally, PLMN + E-UTRA Cell Identifier
eNB ID: eNB Identifier
?? ?? ? used to identify eNBs within a PLMN
Global eNB ID:
?? ??? ?? ? used to identify eNBs globally
RNTI: Radio Network Temporary Identifiers
C-RNTI:? a unique UE identification at the cell level identifying RRC connection
RA-RNTI: used during some transient states,
eNB UE context
E-UTRAN functions:
?? ?? ? Transfer of user data (用戶傳輸數(shù)據(jù))
?? ?? ? Radio channel ciphering and deciphering? (無線信道加密和解密)
?? ?? ? Integrity protection? (完整性保護(hù))
?? ?? ? Header compression? (頭部壓縮)
?? ?? ? Mobility control functions:? (移動性控制功能)
?? ??? ?Handover?? ??? ??? ??(切換)? ??? ?
?? ??? ?Dual Connectivity?? ?? ? (雙重連通性)
?? ?? ? Inter-cell interference coordination? (小區(qū)間干擾協(xié)調(diào))
?? ?? ? Connection setup and release? (連接建立和釋放)
? ? ? ? Load balancing?? ??? ??? ?? ? (負(fù)載平衡)
?? ?? ? Distribution function for NAS messages? (NAS 消息的分發(fā)功能)
?? ?? ? NAS node selection function? ?(NAS 節(jié)點(diǎn)選擇功能)
? ? ? ? Synchronization?? ??? ??? ?? ? (同步)
?? ?????Radio access network sharing? ? (無線接入網(wǎng)共享)
?? ?????MBMS function?? ??? ??? ??? ?? ? (MBMS 功能)
?? ?????subscriber and equipment trace? ? (用戶和設(shè)備跟蹤)
?? ?? ? RAN Information Management (RIM)? ?(RAN 信息管理)
?? ?????Paging?? ??? ??? ??? ??? ??? ?? ? (尋呼)
?? ?????Positioning?? ??? ??? ??? ??? ?? ? (定位)
?? ?????Delivery of warning messages?? ?? ? (發(fā)出警告信息)
