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GSM NETWORK ARCHITECTURE
Transcript of GSM NETWORK ARCHITECTURE
Thank you for your attention!
BASE STATION SUBSYSTEM
NETWORK SWITCHING SUBSYSTEM
(cc) photo by twicepix on Flickr
(cc) photo by tudor on Flickr
Associated with every mobile equipment is
international mobile equipment identity number
and it is used to identify a valid device within a
The IMEI is only used for the identification of device and has
to do with the identification of
SUBSCRIBER IDENTITY MODULE
is a small detachable card which is responsible for the identification of the subscriber within the GSM network
Assosiated with SIM is the
IMSI is a unique identification number and usually TIMSI's are generated
BSS is the 2nd component and
is responsible for handling traffic and signalling
it also carries out
of speech signals and tasks related to radio network
Two sub components are associated with it which are
As the name suggests it involves the operation and support of the GSM system and
these are computer systems and are responsible for the proper functioning of all the system
aintaining network inventory
onfiguring network components
It houses the radio
,and handles the radio link protocols.
feeding the RF signals
Each BTS is controlled by its
parent BSC which manages the radio
Radio channel setup
It assigns and releases
and time slots for the MS.
It allocate the necessary
between the BTS and the MSC.
(network switching subsystem)
It carries out
It allows mobile devices to
with each other and other telephones via
It is the heart of the network and is sometimes known as
is the major part of the NSS
It contains data bases which play
key role in the authentication and
validation of SIMS and other functions
The MSC performs the
functions of the network. It also provides connection to other networks
It is also responsible for following important functions
Inter MSC handovers
Call routing to a mobile subscriber
This database contains all the administrative information about each subscriber along with their last known location
Contains information from a subscriber's HLR necessary
to provide the subscribed services to visiting users
When a subscriber enters the covering area of a new MSC, the VLR associated to this MSC will request information about the new subscriber to its corresponding HLR
The EIR is the entity that decides whether a given mobile equipment may be allowed onto the network OR not
The AUC is a protected database that contains the secret key also contained in the user's SIM card.
I lack words to express my gratitude
as he has inculcated in me the confidence and persuite for knowledge . Most importantly they always talks about novel ideas and they always made me conversant with gigantic knowledge and always encouraged for asking questions even though very basic
SIR M.ADNAN SIDDIQUE
He is currently doing his PHD from ETH ZURICH
l and is actively involved in COMVIS
research group .His exceptional genius and hard work ,intellect ,modesty and vision made him to achieve the
from NUST and he was also awarded with presidential
HE is currently conducting research at world's
best Enginerring school in Electrical Engineering.
I lack words to express my gratitude To DR.IRFAN ABID and MAM SABA ZIA HOD(Electrical Engineering)for his support ,motivation and help.
MAM SABA ZIA
She is currently doing her PHD from UET LHR and is serving as the HOD of Electrical Engineering Department.
EVENT ORGANIZED BY 6TH
RESPECTED GUEST OF HONORS
ENGR.HAIDER ALI KHAN