Programmable presence virtualization

US8285779B2 · kind B2 · utility

Assignee

• International Business Machines Corporation · US

Inventors

• Arup Acharya · Wantage, US
• Nilanjan Banerjee · Narayanpur, IN
• Dipanjan Chakraborty · Sherghati, IN
• Koustuv Dasgupta · Kanchinakote, IN
• Archan Misra · Bound Brook, US
• Xiping Wang · Brevard, US
• Charles P. Wright · Somers, US

Key dates

• Filing date: Feb 8, 2010
• Grant date: Oct 9, 2012
• Expiry date: Sep 11, 2030

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04L67/54
• WIPO field: Digital communication
• WIPO sector: Electrical engineering

Abstract

Techniques for supporting a presence virtualization query are provided. The techniques include receiving a virtual query from a client, the virtual query specified in terms of a membership set of members, wherein the membership set comprises a list of presentity uniform resource identifiers (URIs) and a separate transformation function, defined over a set of presence documents of the members in the membership set, redirecting the query to a destination virtual presentity URI whose presence state comprises an aggregation of the presence documents of the list of URIs in the membership set and a corresponding query element (QE) object that manages subscriptions for the URI, adding the client as a watcher for the destination virtual presentity URI, and applying transformation logic specified by the watcher client and notifying a corresponding client of a resulting output.