Wednesday, August 8, 2018

How to inform a new TAI list to UE

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The easiest way to include a new TAI list to UE is GUTI REALLOCATION COMMAND. This Message includes a TAI list IE which is optional. Thi...

Access Class

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It is not intended that access control be used under normal operating conditions. The use of this facility allows the network operator to ...
Tuesday, August 7, 2018

X2AP procedures

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The X2 interface X2AP procedures are divided into two modules as follows: 1. X2AP Basic Mobility Procedures;  2. X2AP Global Procedures;...
Thursday, August 2, 2018

PTI Procedure Transaction Identity

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Procedure Transaction Identity: An identity which is dynamically allocated by the UE for the UE requested ESM procedures. The procedure tr...

LTE PDN CONNECTIVITY REQUEST message content

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Request Type (9.9.4.14) Based on 10.5.6.17 Request type of 24.008 The purpose of the Request type information element is to indicate w...

IMS voice call concurrency handling scenarios

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SIM1 status SIM2 event SIM2 action Active call on Wi-Fi (VoWiFi) Receives IMS call (SIP INVITE) over Wi...
Friday, July 6, 2018

RRC state Machine in 5G 38.331

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A UE is either in RRC_CONNECTED state or in RRC_INACTIVE state when an RRC connection has been established. If this is not the case, i....
Monday, March 12, 2018

SIB for Handovers

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From To Mandatory SIB's Optiional SIB's LTE LTE SIB1 SIB2 SI...
Friday, February 16, 2018

RACH Procedure

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RACH Procedure Flow 1. RRC Layer sends Access Req for RRC Connection Request/RRC Coonection Re-establishment Request to MAC and starts T3...
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Sunday, January 14, 2018

VOLTE VOIP IMS SIP CSFB

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Often people are confused between VOLTE ,VOIP, IMS , SIP and CSFB. To be clear between all this item lets explain them and understand one ...
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