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  1. LTE attach procedure

    Let us discuss the LTE attach procedure in detail.

    In LTE, UE needs to register to network in order to start data services after power on. This procedure is called an attach procedure. In very short UE perform below tasks to perform attach.
    Camp on to best available cell, PSS and SSS synchronization for radio frame timing alignment, RRC connection establishment, Identification and authentication, location update, Session create request, activating default EPS bearer and UE capability ...
  2. UE Category and LTE Capable Device Stats

    Category information is used to allow the eNB to communicate effectively with all the UEs connected to it.

    The ue-Category defines a combined uplink and downlink capability as specified in 3GPP TS36.306.

    There are 8,623 LTE user devices including frequency and operator variants from 569 suppliers verified in GSA’s database (GAMBoD).

    This is over 53% higher than the number of devices GSA reported in June 2016; the number of suppliers grew ...
  3. Intra LTE mobilty

    Quote Originally Posted by telecominfo View Post
    In LTE, network controlled UE assisted handovers with context transfer between eNB’s are used to support UE mobility. An intra-LTE handover can be executed either via the X2 or via the S1 interface. As long as the UE moves between eNB’s that belong to the same pooling area where the UE is currently registered, the handovers are always executed via the X2 interface.

    In cases when the UE moves between eNB’s that belong to different pooling areas the handover procedure necessarily has