Agency for Science, Technology and Research

National University of Singapore

Stmicroelectronics Asia Pacific Pte Limited

Power Automation Pte Ltd

Chong Yee Lee

Ser Wah Oh

Pankaj Sharma

Christopher Aldridge

Yuen Sam Kwok

Qingjun Zhang

Mridula Pradhan

Sen Gopa

Feng Hong

Gim Kerk See

There is provided an Advanced Metering Infrastructure (AMI) system including a plurality of gate-ways interconnected by a network comprising a plurality of subnets based on one or more types of networking protocols, each of the plurality of gateways communicatively coupled to or integrated in a metering device; and a concentrator connected to the network for receiving metering data from the metering devices. The concentrator and the plurality of gateways each defines a communication node in the network. In particular, each of the gateways is configured to store a route information comprising at least a primary route information and is operable to route uplink data received based on the route information, the primary route information indicating a predetermined one of the communication nodes for the gateway to route the uplink data to next as a first priority.

Routing protocol for advanced metering infrastructure system

A method of calculating a Cyclic Redundancy Check (CRC) value for a multi-bit input data word, using a defined generator polynomial is disclosed. The method includes the steps of: serially shifting at least a portion of the input data word into a register; XORing the contents of the register with the generator polynomial if the LSB of the register is '1'; shifting the contents of the register right by one position; shifting into the MSB position of the register a new bit of the input data word, having been XORed with the LSB of the register; repeating the previous step for all message data bits; shifting into the register a number of '0's equal to the length of the generator polynomial; reading from the register the calculated CRC value. Apparatus for performing the method is also disclosed.

Software instructions utilizing a hardwired circuit

Growing community of inventors

Singapore, Singapore

Chong Yee Lee