MULTITREE DATABASE ARCHITECTURE FOR GLOBAL NEXT GENERATION MOBILE NETWORKS
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projectsofme
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#1
28-09-2010, 09:14 AM



.ppt   Architecture for Global.ppt (Size: 411.5 KB / Downloads: 134)
ABSTRACT


Multi tree database architecture consists of a number of distributed database subsystems (DSs).

Databases are DB0, DB1and DB2.

Some numbers of DB2 databases are grouped to one DB1 and some of the DB1 databases are connected to single DB0.


Registration request message is sent to the associated DB2 then it sends a registration request message to the DB1 controlling this area.

It register the new DB2 in the index entry and it updated to old DBO.

In the DB1 also it not exist it moves to DBO for checking and the call delivered.

Existing system


In global roaming, general database design is used to implement.

Location tracking is based on two types of location databases:

*Home location register (HLR)
*Visitor location register (VLR).

The profile contains information such as the service types subscribed, the user’s current location, etc.
A VLR is centered with a mobile switching center, controls a group of registration areas.

Whenever area changes, HLR are updated to the new location and deregistered from the old VLR.

In the future mobile networks, the updating and querying loads on the location databases will be high.


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seminar flower
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Posts: 10,120
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#2
11-10-2012, 12:05 PM

MULTITREE DATABASE ARCHITECTURE FOR GLOBAL NEXT GENERATION MOBILE NETWORKS



.ppt   Architecture for Global.ppt (Size: 409.5 KB / Downloads: 13)



ABSTRACT

Multi tree database architecture consists of a number of distributed database subsystems (DSs).
Databases are DB0, DB1and DB2.
Some numbers of DB2 databases are grouped to one DB1 and some of the DB1 databases are connected to single DB0.
Registration request message is sent to the associated DB2 then it sends a registration request message to the DB1 controlling this area.
It register the new DB2 in the index entry and it updated to old DBO.
In the DB1 also it not exist it moves to DBO for checking and the call delivered.

Existing system:

In global roaming, general database design is used to implement.
Location tracking is based on two types of location databases:
Home location register (HLR)
Visitor location register (VLR).
The profile contains information such as the service types subscribed, the user’s current location, etc.
A VLR is centered with a mobile switching center, controls a group of registration areas.
Whenever area changes, HLR are updated to the new location and deregistered from the old VLR.
In the future mobile networks, the updating and querying loads on the location databases will be high.

Proposed system:

The proposed method is used for the next generation of mobile networks as the increase in the number of mobile nodes.The main advantages of this system are,
Reduces the database loads
Three-level tree structure
Signaling traffic

MULTITREE DATABASE ARCHITECTURE

Multi-database architecture consists of a number of distributed database subsystems.
It is a three level architecture.
The DB0 maintains the service profile for each user currently residing in its service area, and maintains an entry for each user in the global mobile system.

LOCATION TRACKING

The location tracking in the multi-tree structure has preferred the Memory –resident direct file indices and T-tree indices.
In the memory resident direct file it directs the relationship between record key and Storage Location.
T-tree contains a number of data items in each node thus having good storage utilization.
To find a value in the T-tree, a search algorithm is needed.

ORGANISATION OF DATABASE

The DB0 consists of an index file and a data file.
Every subscriber in the whole mobile system has an entry in the index file.
DB1 has a data item in the index file consists of the user’s PTN and a pointer to the DB2 the user is currently visiting.
DB2 area has an entry in the index consists of the user’s PTN and a pointer to the user record in the data file that stores the service profiles for each user currently visiting this DB2 .

LOCATION REGISTRATION

Registration requestmessage is sent to the associated DB2 then it sends a request to the DB1 then it registered and it updated to oldDBO.If not it moves to new DBO and registration process closed.

CALLDELIVERY PROCEDURE :

In call delivery procedure if the call is detected,
then it checks to index entry and call delivered to its required one .If not it moves to DB1 for checking .DB1 also not exist it moves to DBO for checking and the call delivered.
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