AllJoyn - Tech Overview v3_for Brooks.pdf

AllJoyn?: Enabling the Internet of Everything Technical Overview Brooks Wang Qualcomm Wireless Communication Technologies (China) Limited Qualcomm Connected Experiences, Inc. is a member of the AllSeen Alliance Click to edit Master text styles – Second level ? Third level – Fourth level ? Fifth level What is AllJoyn? An Open Source API Framework For the Internet of Everything A way devices and applications publish APIs over a network in a standard way Why APIs? – Because this is what software developers understand and work with every day These APIs are the functionality that the “things” on the network expose to other “things” – E.g. temperature, time of day, etc.… – Services and/or devices can compose these APIs to provide whatever set of functionality they require – The APIs are critical to interoperability between devices and services How do applications know what APIs are available? – AllJoyn provides application discovery and fine-grained discovery of the APIs supported by applications – This is accomplished in a platform and radio-link agnostic way Click to edit Master text styles – Second level ? Third level – Fourth level ? Fifth level Overview AllJoyn implements a “distributed software bus” – The bus provides the “medium” that enables AllJoyn applications to communicate via published APIs ? Applications may be firmware on microcontrollers, mobile device “apps” or traditional applications on PCs/servers – Applications publishing APIs are services, while those consuming the APIs are clients ? An application can be both a service and a client: this is makes AllJoyn a peer-to-peer system –Communication is via messages that map directly to APIs in high-level programming languages Bus formation is ad hoc – Based on discovery of applications/services – Abstracts link-specific discovery mechanisms Protocol is network-independent –Wire protocol is based on the D-Bus wire-protocol with extensions –Can run over Wi-Fi, Wi-Fi