Network Performance and Operation

  Accessibility  :If A UE Requested for the some services to the system and System will Response UE Properly, It means Accessibility is  completed successfully. Accessibility KPIs are used to measure how successfully user is able to access the Network. Divided in 3 segments. RRC Phase S1 Signaling Phase E-RAB Phase In the Call Flow System, after the RACH Procedure,2nd Procedure comes the RRC Phase. RRC Rejection due to Congestion: May be the Reason eNB will be busy or it is very congested, It don't have Resources, So that it can allow new user.                                                How we can Reduce the Congestion Decrease the UE Inactive Timer to a smaller value( If we reduce this timer, UE will less stay in RRC connected mode, more offen release by enb) . This will initiate early release for the users, Hence Load will be reduced. However this ...

  The UMTS network can be broadly divided into- User Equipment(UE) Radio Network Subsystem(RNS) Core Network(CN) UMTS/3G Architecture User Equipment(UE)   : USIM(Universal Subscriber Identity Module) :Same as SIM card, But in case of UMTS it is termed as USIM. ME(Mobile Equipment)  :Hardware used by subscriber containing IMEI.       2. Radio Network Subsystem(RNS)   : Also known as UMTS Radio Access Network,(UTRAN).It            provides and  manage the air interface for the overall network. Node B  : Node B corresponds to BTS in GSM. RNC(Radio Network Controller)  :It controls Node B in 3G telecom system.       3. Core Network(CN)  : Circuit Switch Domain  :A permanent channel for the duration of the call. MSC(Mobile Switching Centre)  :it manage the circuit switched calls under way. GMSC(Gateway Mobile Switching Centre)  :Responsible for obtaining the location of su...

The GSM network can be broadly divided into- Mobile Station(MS) Base Station Sub-System(BSS) Network Switching Sub-System(NSS) Operation Support Sub-System(OSS) GSM/2G Architecture Mobile Station  :   ME(Mobile Equipment)  :Hardware used by subscriber containing IMEI(International Mobile Equipment Identity). SIM(Subscriber Identity Module)  :Detachable smart card containing IMSI(International Mobile Subscriber Identity).      2.   Base Station Subsystem  : BTS(Base Transceiver Station)  :Sends & Receives signals from MS. Also does Encoding, Multiplexing, Encryption, Modulation, ..etc. BSC(Base Station Controller)  :Controls group of BTS, Allocation of radio channels, Handover from one BTS to another.      3. Network Switching Subsystem  : MSC(Mobile Switching Centre)  :Performs call routing, call setup & call switching. Communicates with other NSS component like HLR ,VLR, AUC &EIR, Management of...