A wireless gateway routes packets between networks and can be implemented through software, hardware, or a combination. It provides wireless access point, routing, and firewall functions. A wireless gateway also performs DHCP services to dynamically distribute network parameters. There are simple gateways connected to cable modems and more complex gateways with built-in modems. A mobile application server makes backend systems accessible to mobile apps, similar to web servers. It provides features like data routing, authentication, offline support, and security through data encryption. Mobile application servers can be deployed on-premise or in the cloud.

1. Wireless Gateways
&
Mobile Application Server
By:-
Ashutosh Anshu
IT-A
14150014

2. Wireless Gateway
- Routes packets from one network to another.
- Can be implemented as a software or a hardware or a combination of both.
- Software Implementation Example:-
Emerson
- Hardware Implementation Example:-
Universal IoT Gateway
- Software & Hardware Implementation Example:-
Emerson installed on Raspberry Pi
[Ref.:
https://en.wikipedia.org/wiki/Wireless_gateway]

3. Wireless Gateway
Main Feature:-
Provides functions of:-
1. Wireless Access Points (WAP)
2. Routers
3. Firewall
[Ref.: International Journal of Sensors, Wireless Communications and Control, Volume 7 - Number 1]

4. Wireless Gateway
- Also perform the task of DHCP.
- DHCP (Dynamic Host Control Protocol):-
* A standard network protocol used on IP networks.
* Controlled by a DHCP server.
* Dynamically distributes network parameters.
* Save the funds.
[Ref.: https://technet.microsoft.com/en-us/library/dd145320(v=ws.10).aspx

5. Wireless Gateway
- Types of Wireless Gateway:-
1. Simple: Connected to a cable modem to connect to the ISP.
2. Complex: Termed Complex
Actually very simple
No need of any other hardware. Built-in modem to
connect to the Internet automatically.
[Ref.: https://en.wikipedia.org/wiki/Wireless_gateway]

6. Mobile Application Server
- Purpose:-
* Makes back-end accessible to the mobile apps.
* Much like web servers.
[Ref.: https://en.wikipedia.org/wiki/Wireless_gateway]

7. Mobile Application Server
- Features:-
* Data Routing
* Authentication Service
* Offline support
* Security: Provide data encryption
[Ref.: https://en.wikipedia.org/wiki/Wireless_gateway]

8. Mobile Application Server
- Deployment Models:-
* On Premise
* On Cloud
On Premise On Cloud
- Higher cost - Pay as-per-use
- High maintenance - No maintenance required
- Lack of elastic infrastructure - Use of IaaS
- Lack of robust platforms - Use of PaaS
[Ref.: https://en.wikipedia.org/wiki/Wireless_gateway]

9. Mobile Application Server
- Challenges:-
* Limited power and bandwidth in mobile devices
* No continuous wifi coverage and cellular data
* Security issue due to Mobility and BYOD (Bring Your Own Device)
[Ref.: https://en.wikipedia.org/wiki/Wireless_gateway]