System and method for providing asynchronous notifications using synchronous data sources

A mobile device comprising:

• a first module for generating a subscription request message including a subscription filter;
• the subscription filter specifying a polling frequency and a device identification for the mobile device;
• a second module for receiving a notification data asynchronously from a Web service proxy server;
• wherein the Web service proxy server comprises a notification module accepting the subscription request message;
• a task scheduler generating a timer event based on the polling frequency;
• a Web service client in communication with a Web service, the Web service client sending a request message synchronously to the Web service in response to the timer event, and receiving a notification data from the Web service and
• wherein the Web service proxy server forwards said notification data asynchronously to said mobile device when said response message satisfies a predetermined criterion.

A method for providing access to a Web service using a mobile device, the method comprising:

• receiving a subscription request message from a mobile device at a Web service proxy server including a Web service client in communication with the Web service, the subscription request message including a subscription filter;
• storing the subscription filter at the Web service proxy server, the subscription filter specifying a polling frequency and a device identification;
• generating a timer event according to the polling frequency;
• sending a request message synchronously from the Web service client to the Web service in response to the timer event;
• receiving at the Web service client a notification data from the Web service;
• and
• forwarding the notification data asynchronously to the mobile device when the response message satisfies a predetermined criterion.