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IP Addess Allocation when UE moved from 3G to 4G network?

+1 vote

When the subscriber moves from poor 3G RF conditions to good LTE RF conditions. The IP address on 3G is different from IP address on LTE Networks. Is it possible that there should be no ip address change when customer moves from worse 3G conditions to Good 4G conditions and vice versa. If so., how can we prevent ip address changing?

posted Jul 22, 2013 by Nora Jones

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Depends a lot on the operator/vendors not on the specs.
IP address is given to the UE based on service (Access Point Name). In the above scenario, UE is moved from 3G to 4G or vice verse, the same PGW/GGSN, (SGW/SGSN may change) selected by the MME.Hence UE will get the same IP address since he not requested the new service during 3G to 4G (APN).
If the mobility/handover is anchored by the same P G/W in 3G and 4G network the UE will retain the same IP address after the HO.

1 Answer

0 votes

As someone pointed out, this would be a function of the carrier and their equipment parameters as opposed to an Installer/Integrator/Specs issue. This would be entirely a function of the DHCP analog and unlikely to be in control of a vendor.

answer Jul 22, 2013 by Sonu Jindal
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