Your question is not very clear: what do you mean with different WiFi zone connective regions? 

802.11s defines message exchanges on layer 2, and IP addresses are layer 3 addressing. So the question sounds ambiguous.

But, you should not have the same IP address within the same network. If, however, with "different WiFi zone connective regions" you mean that there are actually two disconnected networks, you may use the same IP address without expecting problems. 

Hope this helps you move forward.

If you are talking about layer 3 level and the two regions are connected, then same IP cannot be used. 

Hello Ana and harminder, thanks for your reply. Since i am working over IEEE 802.11s application. I Elaborate my question :-

Consider an organisation having its internet server from there he is distributing internet to other wifi access point by the help of LAN. From Wifi Access points internet can be accessed to all other devices or User Equipments. Now in a scenario if there is message exchange happen between two devices or user eqipments which are in different wifi Aceess points can they have same ip address. I really don't know in IEEE802.11s you can use the word disconnected or not. Consider i am using Wifi Access point which are IEEE802.11s enable. 

I still believe that they cannot have the same IP address.

Hello Harminder, if possible can you give me any reference of it.

I think technically It can and cannot happen depending. An IP address in any IP network serves two purposes. It serves as the identity of the node for routing and also as a location identifier. If in your scenario the routing is done on layer three i.e IP then there will conflict of identity and therefore same IP is not possible. However if the routing is purely done on layer 2 then I think IP identification becomes irrelevant and there should be no problems two nodes have same IPs. Although if there are still layer 3 applications which will inform you regarding IP conflict as you might have sometimes seen on LANS. 

 If the Wireless access points are NAT enabled, then of course, yes, two different machines can have the same IP address.

For example, your Default Gateway is 192.168.1.1, one access point WAN IP is 192.168.1.2 and second access point WAN IP is 192.168.1.3.

Now, the first access point can provide the NAT IP range of, say, 172.16.*.*. Also, your second access point can give the same range independent of the first access point because they are now in different subnet actually.

If the Wifi zones are different and their wifi access points are configured and connected to single router then it is not possible that  different computer connected to different wifi access point having the same ip because it will create ip conflict. while if nat is enable on both the wifi access points. then it  is possible to have same ip at different zone because         of  " NAT ".   Nat will translate the same ip with two different ip.   If you want to know, then i would like to suggest you to try Cisco Packet Tracer for simulation.