1. Survey on architecture of Mobile Web Services
Junhua Yu
MianruiChai

2. Contents Introduction Mobile Web Services
Applications of mobile web services
Web service
challenges mobile web services
Solution-- mobile web services Architectures
Mobile Web Services

3. Introduction
Mobile web services
Mobile
devices
web
services

4. Applications of mobile web services
Replacement of physical things that people carry in their daily lives
mobile web wallet service

5. Applications of mobile web services
Aggregating data from the environment for the user
make an event record

6. Applications of mobile web services
Providing data about the person carrying the mobile device
Mobile ID Services
Mobile Ticket and Voucher Reader

7. Applications of mobile web services
Replacement of physical things that people carry in their daily lives
Aggregating data from the environment for the user
Providing data about the person carrying the mobile device

8. Web service
Web services provide a platform for different components to contact with each other.
The web services are a set of standards to form a service-oriented architecture (SOA)

9. Web service

10. Challenges for mobile web services
Hardware
the mobile devices are PDAs, mobile phones, two-way pagers, and even wrist-watches
Low power CPU
small memory
small storage capacities
small battery
make full use of the resources to develop mobile web software

11. Challenges for mobile web services
Communication protocols
Most of the cases the protocols are or Bluetooth, the communication rage of these protocols are very short.
hard to make sure to connect to the network all the time
as fast as possible
as short as possible

12. Challenges for mobile web services
Identification & security
many user may use the same mobile web service at the same time.
Identification:
easiest way :IP address
Movements change its IP address and even the DNS.

13. Solution
faster parsers
introduce new ways of data compression
optimize the protocol
use binary encodings
the outcome generally depends on the specific structure of the data in the experiment and the application itself.
another height of view
Architecture

14. Mobile web services Architecture
Wireless portal network
Wireless extended Internet
Peer-to-peer (P2P) network

15. The wireless portal Internet
In this kind of architecture, the Gateway is used as the Agent between the service providers, service consumers, and service registries.

16. The wireless extended Internet

17. The wireless extended Internet
overhead of server page and web service

18. The wireless extended Internet
UDDI Update After Mobile Device Address Reconfiguration

19. The wireless ad-hoc/P2P network
The service requestor (R)
The service provider (P)
The service broker (B)
dotted arrows: node registers its services to the broker
dashed-dotted arrows: node searches for remote services
continuous arrows: node uses remote service

20. The wireless ad-hoc/P2P network
Service propagation by Konark goissp protocol

21. The wireless ad-hoc/P2P network
mobile web service migration

22. The Hybrid Network

23. Thank You!