utility meter to measure utility consumption and optimize upstream communications and method for managing those communications

摘要

utility meter for measuring utility consumption and optimizing upstream communications and method for managing such communications The present invention relates to a utility meter (10) for measuring at least one utility consumption utility unit comprising: a metering unit (11) for measuring at least one utility consumption value (v), a communication unit (12) for sending / receiving messages (8) to / from at least one remote management center (20) assigned to the utility meter (10) for processing said utility consumption value (v) by said remote management center (20), a memory (13) for storing a unique identifier (id) belonging to the utility meter (10) and a first key (k1) for encrypting messages (8) to be sent by the communication unit (12), an encryption unit (14) for encrypting said utility value (v) as a first cryptogram (c1), a message generator (15) for generating a service message utility (8) containing said cryptogram (c1) to be sent to the remote management center (20), a key (16) to generate a payload key (kp) to be by said encryption unit ( 14) in order to encrypt the utility consumption value (v), a second cryptogram (c2) generated by the encryption unit (14) by encrypting said payload key (kp) with said first key ( k1), said second cryptogram (c2) being intended to be included by the message generator (15) at least once in the utility message (8) to be sent to the remote management center (20) . The present invention further relates to a method for managing communication between a utility meter and at least one remote utility management center (20).