Virtual Wireless LAN (vWLAN) by BlueSocket

vWLAN is virtual wireless lan technology is being developed by www.bluesoket.com and company is recently acquired by Adtran. The solution offering is basically based on the extension of roaming user to his home AP network. As per my understanding, every access point need to fill the details of each user location and access rights policies which is really cumbersome.

As per above diagram(captured from white paper), all the roles are configured on AP-2 for student and when the student roams from Ap-2 to AP-5, AP-5 sees that the student location is based out of AP-2, so AP-5 extends its tunnel to AP-2 and AP-2 allocated the ip address and all the access roles to user student.

If IP address allocation is the only concern, in that case home agent kind of device should be used which is actually responsible of allocating same ip address where ever you roam.

If I compare the solution with normal access points and controllers, it is bit weird; instead of doing the centralization they are opting distributed architecture consequences unnecessary use of bandwidth from one AP to another AP in case of roaming user.

Virtual Wireless LAN Whitepaper


Note:This is completely a personal view and has nothing to do with any person or company.
 




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Truls Hjelle - CCIE at Age 64

Truls Hjelle Senior Network Consultant from Ventelo Networks got his CCIE at almost 64 years of age, but 41 years ago he first became interested in networking while working on one of the first data communication networks in Norway. He imagined being a mathematician as a child but instead discovered his passion for IT. Listen to his story in this audio interview.

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Mobility Management Entity

MME is Mobility Management Entity, control node of SAE/EPC architecture. It works simultaneously with access network and core network with different interfaces. Access Network is network which is facing towards eNodeB and core network is that network which is facing towards S-Gateway/P-Gateway.

Interfaces of MME

·         S1-MME:- This interfaces is facing towards enodeB. A very crucial interface which is responsible for UE management with various different type of control messages.

·         S11:- This interface is facing towards S-Gateway

·         S6a:- This interface is facing towards HSS

   

Functions of MME

     Below is the list of functions performed by S1-MME interfaces:-

·         Network Access Control

·         Radio Resource Management

·         Mobility Management(Handover Management)

·         Roaming management

·         UE Reach ability

·         Tracking Area Management

·         Load balancing Between different S gateway

·         Paging

·         Session Management

·         Location Aware Applications

      Below is the list of functions performed by S11 interfaces

·         PDN Gateway and Serving Gateway selection on the basics of DNS

·         Bearer Activation and Deactivation Responsible for handovers from LTE to 3G circuit switched domain in case of voice calls. 

        Lawful Intercept

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