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Example 4.2 Illustration of LTE/EPS NAS SM Layer Message
ОглавлениеConsider the LTE/EPS ESM Information Request NAS message (see Figure 4.5) which is sent from the MME to the UE through the eNodeB. It is described in a tabular format and their encoding method, i.e. IE format, is the same. Unlike the GSM/GPRS Layer 3 SM messages, the protocol header of every LTE/EPS NAS layer message contains an EPS Bearer Identity and a Procedure Transaction Identity; refer to TS 24.301 [46]. In the case of the 5G system NAS layer, a 5GSM message contains a PDU Session ID and a Procedure Transaction Identity.
Figure 4.5 LTE/EPS NAS layer 3 ESM information request message.
Source: © 2014. 3GPP ™ TSs and TRs are the property of ARIB, ATIS, CCSA, ETSI, TSDSI, TTA and TTC who jointly own the copyright in them. © 2014, 3GPP.
