Category: 2G/3G
Service Request in 3G
The MS initiates the ‘Service Request’ procedure in order to establish the ‘PS signaling connection’ between the MS and the
GPRS Detach procedure
There are three nodes that can initiate ‘GPRS Detach’ procedure. Those nodes are the MS, the SGSN, and the HLR.
Timers in GPRS Mobility Management
There are a few Mobility Management timers exist on the MS and the SGSN. Using those timers the nodes will
How MM state transition in 2G occurs
The MM context exist on both the MS and the SGSN. One of the information elements exist inside the MM context,
PMM state transition in 3G
The PMM state are the Mobility management state for the MM context exist on the MS and on the SGSN
2G/3G Mobility Management states
The GPRS Mobility Management determines if the user equipment is registered to the network or not. In another words, it
Routing Area Update ‘RAU’ in GPRS
Types of Routing Area Update ‘RAU’ Intra-SGSN RAU The Intra SGSN RAU occurs when the MS moves from one RA
Your reference for GPRS Attach Procedure
GPRS Attach procedure is the procedure in which the MS registers to the network. In other words, the network knows
Gn Interface and Gp Interface
Gn/Gp interface, is the interface between the SGSNs and the GGSNs. ‘Gn interface’ is the interface between the SGSNs and
Roaming Architecture in 2G/3G
To understand Roaming architecture in GPRS, there are a few terms we have to understand, Outbound roaming The outbound roaming