Wi-Fi Isn't Competing with 5G. It's Becoming Part of It

Wireless
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Making handover invisible takes a lot of engineering.

That’s what I find interesting about N3IWF.

It lets devices move between Wi-Fi and 5G more smoothly.

N3IWF acts as the bridge.

It makes non-3GPP access look like part of the 5G network.

That happens through a few key interfaces:

:white_check_mark: NWu connects the UE to the N3IWF over Wi-Fi.
:white_check_mark: Y2 links the access gateway with the N3IWF.
:white_check_mark: N2 connects the N3IWF to the AMF for signaling and session control.

For operators, the advantages are clear.

Wi-Fi can offload mobile traffic.
That lowers network costs.
It also extends 5G services beyond the radio network.

Of course, it isn’t without challenges.

:cross_mark: Untrusted Wi-Fi networks require strong security.
:cross_mark: Wi-Fi can’t always match 5G for reliability or latency.
:cross_mark: Different technologies make interoperability more demanding.

Even so, I think the payoff is worth it.

Users shouldn’t have to care whether they’re on Wi-Fi or 5G.

They should simply stay connected.

That’s the real goal.

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Thanks and share it with your network.

Wi-Fi Isn't Competing with 5G. It's Becoming Part of It.

Linkedin: :backhand_index_pointing_down:

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And I would like to add more information here since someone might think that this is a new feature of 5G and it is absolutely not.This technology is already in use with 4G EPC as well and it is called voWIFI.the alternative node for N3IWF is called ePDG.ePDG and N3IWF functionality is almost identical but the protocols and methodology in use have minor differences.For an example ePDG use diameter as its control protocol while N3IWF uses HTTP like in 5GSA.ePDG bypasses MME and directly communicate with PGW while N3IWF communicate with AMF.The seamless Handover or wifi /Radio network selection is completely done by UE and there is a option some people might have seen it to select which network should be given the priority when both Radio coverage and wificoverage are aviable.You can set it as wifi gets the priority then when you are on wifi coverage your mobile uses wifi and when it is not then switches to Radio seemlessly.And also vowifi to volte and vice versa is already available as well.