International Business Machines Corporation

Siemens Aktiengesellschaft

Andreas X Meier

Jan Leonard Camenisch

Gero Dittmann

Philipp Blum

Mario Strasser

Methods and computerized units grant network access to any one of multiple devices of the same owner. Each of the multiple devices has been previously associated with an owner at an authentication server, whereby device keys for authenticating said multiple devices are stored on the authentication server. Also, said owner has previously been authorized to access the network, such that an owner ID for this owner is stored on the authentication server. In embodiments, present methods comprise, at the authentication server: receiving a network access request for a device to connect to a network, said device being one of the multiple devices; and upon authenticating said device based on a device key associated with this device at the authentication server, confirming that network access can be granted for the device if said owner ID is confirmed to be associated with said device at the authentication server.

Owner based device authentication and authorization for network access

A method and a system for the propagation of a message in a radio-operated communication network having a base unit and a plurality of members, wherein the base unit and the members each includes a transmitter and a receiver, the receiver being activated at cyclical switch-on times for a certain respective receiving period. A message to be sent from a member to the base unit is transmitted by the member to at least one adjacent member as a function of at least one rule, and the message is transmitted by the at least one adjacent member, according to the at least one rule, to at least one member adjacent thereto, in the direction of the base unit. The process is repeated such that the message is transmitted from at least one adjacent member receiving the message according to the at least one rule to at least one member adjacent thereto, in the direction of the base unit. The message is transmitted from the at least one member that is adjacent to the base unit to at least the base unit.

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Adliswil, Switzerland

Andreas X Meier