Section: 4.4.4.1 Location updating initiation by the mobile station
Content: Any timer used for triggering the location updating procedure (e.g. T3211, T3212) is stopped if running. As no RR connection exists at the time when the location updating procedure has to be started, the MM sublayer within the mobile station will request the RR sublayer to establish a RR connection and enter state WAIT FOR RR CONNECTION (LOCATION UPDATE). The procedure for establishing an RR connection is described in 3GPP TS 44.018[ None ]  [84] subclause 3.3 and 3GPP TS 25.331[ None ]  [23c]. The mobile station initiates the location updating procedure by sending a LOCATION UPDATING REQUEST message to the network, starts the timer T3210 and enters state LOCATION UPDATING INITIATED. The location updating type information element shall indicate what kind of updating is requested. If the MS is configured for "AttachWithIMSI" as specified in 3GPP TS 24.368[ Non-Access Stratum (NAS) configuration Management Object (MO) ]  [135] or 3GPP TS 31.102[ Characteristics of the Universal Subscriber Identity Module (USIM) application ]  [112] and the selected PLMN is neither the registered PLMN nor in the list of equivalent PLMNs, the MS shall include the IMSI in the Mobile identity IE in the LOCATION UPDATING REQUEST message. If the mobile station is configured to use CS fallback and SMS over SGs, or SMS over SGs only, and TIN indicates "RAT-related TMSI" the mobile station shall set the TIN to "P-TMSI" unless the mobile station had already received the EMM cause #18 during a combined attach procedure (see subclause 5.5.1.3.4.3 of 3GPP TS 24.301[ Non-Access-Stratum (NAS) protocol for Evolved Packet System (EPS); Stage 3 ]  [120]) or a combined tracking area updating procedure (see subclause 5.5.3.3.4.3 of 3GPP TS 24.301[ Non-Access-Stratum (NAS) protocol for Evolved Packet System (EPS); Stage 3 ]  [120]) on the same PLMN, but not disabled the E-UTRAN capability.