1. Wireless Mesh Networking or Peer to Peer Technology Andre Lukito – andre.lukito@iis.sinica.edu.tw Johnsonsu – johnsonsu@iis.sinica.edu.tw Wednesday, 9 April 2014 OpenISDM, IIS, Academia Sinica 1

2. Revision DateDescription 02 April 2014 First Draft 04 April 2014 Introduction Multipeer Connectivity Framework in some details. Haggle. AllJoyn. Some Issue. 08 April 2014 Slide improvement Conclusion 2

3. Outline  Introduction  Multipeer Connectivity  Other Frameworks  Other Issues  Conclusion 3

4. Introduction  Type of decentralized and distributed network architecture.  Individual nodes in the network (called "peers") act as both suppliers and consumers of resources  Sharing files or streaming audio/video can be done with multiple interconnected peers. 4

5. Multipeer Connectivity 1 (1 of 6) 1  New Framework in iOS 7 that facilitates Discovery of and Communication with nearby devices.  Build communications session with nearby peers.  Securely transmit messages, streams, or file resources to other iOS devices without going through an intermediary web service. 5

6. 6 (2 of 6)

7. Wireless Technologies (3 of 6)  Classical Bluetooth  Infrastructure Wi-Fi  In addition, in iOS 7 support for peer to peer Wi-Fi networking  iOS devices communicate with each other using Wi-Fi technology  Not connected through access point  Connected to different access points 7

8. Features (4 of 6)  Multiple wireless technologies  Interface selection  Convenience discovery and invitation UI  Message-based and stream-based data  Authentication and encryption 8

9. Sending Data (5 of 6)  Three ways of sending data  Messages (reliable and unreliable mode)  Streaming  Resources 9

10. Phase (6 of 6)  Discovery Phase  App uses a browse object to browse for nearby peers.  App uses an advertiser object or an advertiser assistant object to tell nearby peers that it is available.  Session Phase  Peer accepts the invitation.  Browser establishes a connection with the advertiser.  Perform direct communication to one or more peers within the session 10

11. Other Frameworks (1 of 2)  Haggle 1 1  Developed at Uppsala Unversity. 2 2  Supports many platforms, but mainly targets mobile phones.  Examples: Windows mobile, Android, Linux, Mac OS X, and iOS.  Last update on 2012. 11

12. Other Frameworks (2 of 2)  AllJoyn software connectivity and services framework 3 3  Initially developed by Qualcomm Innovation Center, Inc.  Contributed to the AllSeen Alliance. 4  Supports Linux, Android, MacOS X, iOS, Windows 7, Windows 8, and RT. (Windows phone 8 under development). 12

13. Other Issues (1 of 2)  Bluetooth Protocol Stack 1 1  Software or firmware component that has direct access to the Bluetooth device.  Every vendor handles stack initialization differently. 2 2 13

14. Other Issues (2 of 2)  Frameworks  Multipeer Connectivity Framework by iOS 7 run in good performance in every devices that already had iOS 7.  Haggle and AllJoyn will have compability issue. 3,4,5 345  Android. Access to low level Bluetooth APIs require root permission and only support for BLueZ protocol stack or if the frameworks adopted by OEMs.  iOS. Bluetooth can’t be supported.  Haggle and AllJoyn mostly will use Wi-Fi as interface connection. 14

15. Conclusion  Multipeer Connectivity  New Framework for iOS 7 that can discover and communication with nearby devices.  Can use Bluetooth, Wi-Fi, and P2P Wi-Fi (iOS7).  Only works on iOS devices with iOS 7.  Other Frameworks  Haggle (last update 2012) and AllJoyn.  Support for multiple platforms (still limited).  Mostly using Wi-Fi as interface connection.  Bluetooth implementation still difficult because the difference about Bluetooth Protocol Stack and the limitation to develop in multiple platforms. 15