Patent · US Active

Method for aggregating data in a network

US8295491B2 · kind B2 · utility

6Cited by

3References

17Claims

0Family size

Assignee

NEC EUROPE LTD. · DE

Inventors

Frederik Armknecht · Worms, DE
Joao Girao · Heidelberg, DE
Dirk Westhoff · Heidelberg, DE

Key dates

Filing date	Apr 25, 2007
Grant date	Oct 23, 2012
Priority date	—
Expiry date	Aug 17, 2028

Classification

Technology area (CPC H)Electricity
CPC primaryH04L2463/061
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

A method for aggregating data in a network, particularly in a wireless sensor network, wherein the network (1) includes a plurality of sensor nodes (Ni) to measure data and at least one sink node (S) at which the data measured by the sensor nodes (Ni) are aggregated, and wherein each sensor node (Ni) encrypts its measured data with a key k and forwards the result towards the sink node (S), is characterized in that, in the context of a key distribution within the network (1), a master key K is chosen, and that the master key K is autonomously split up by the network (1) into individual keys ki to be used by the sensor nodes (Ni) for encrypting measured data, with the sum of all individual keys ki being equal to the master key K.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.