Bruce married a local Puerto Rican girl of color who gave birth to his first daughter. His wife was a talented an popular school teacher who longed to teach in America. Meanwhile Bruce was trying t...
Descripción: mark dvoretsky chess book school of chess
diploma of mangment
Full description
functional specification for sapFull description
DCDU Specification
Full description
Caterpillar Torque Specification
SpecificationFull description
Full description
Piling Specification
QG Piping specification
FIREPROOFING SPECIFICATIONFull description
The article looks at the recent activities of PLA Air Force in Tibet, from an Indian perspective
PROJECT SPECIFICATION
Electrical SpecificationDescription complète
Fireproofing specification from BorougeFull description
LoRaWAN LoRaW AN specification developments Nicolas Sornin LoRa‐Alliance.org
LoRa = a radio physical layer
LORA Antenna LoRa‐Alliance.org
LoRa can be used with any protocol
WMbus
HART LORA Antenna LoRa‐Alliance.org
What protocol can we use ? •
•
•
•
Too chatty Node is tied to a gateway Very difficult mobility support No security at MAC level
6LoPan LORA Antenna LoRa‐Alliance.org
LoRaWAN1.0 •
•
•
Close ALIGNMENT WITH IEEE 802.15.4 in order to preserve higher layers
But seamless mobility , no handover Minimal protocol overhead
LoRaWAN LORA Antenna LoRa‐Alliance.org
LoRaWAN design objectives •
Designed for virtualized CLOUD BASED network layer: •
•
•
•
•
All NW antennas behave as one, no handover necessary.
Close ALIGNMENT WITH IEEE 802.15.4 in order to preserve higher layers •
•
Simpler base stations, less maintenance
6LoWPAN compatibility IEEE sensor address space
MINIMAL ENERGY REQUIREMENTS: Eliminate useless overheads. Enables SMOOTH VERSIONING
LoRa‐Alliance.org
LoRaWAN device classes CLASS NAME
INTENDED USAGE
A
Battery powered sensors, or actuators with no latency constraint Most energy efficient communication class. Must be supported by all devices
(« all »)
B (« beacon »)
C (« continuous »)
Battery powered actuators Energy efficient communication class for latency controlled downlink. Based on slotted communication synchronized with a network beacon. Mains powered actuators Devices which can afford to listen continuously. No latency for downlink communication. LoRa‐Alliance.org
What’s coming next ?
LoRa‐Alliance.org
Examples of current developments inside the TC
•
•
•
Global frequency bands support Clever fragmentation Roaming
LoRa‐Alliance.org
Native support for different Frequency bands ..
• • • • • • •
Europe 868 ISM band Europe 433 ISM band Russia North America 900 band China 780 band
• • • • • •
Europe 868 ISM band Europe 433 ISM band North America 900 band China 780 band Korea Japan Brazil India
So roaming includes many different scenarios Clever roaming implies being connected to several network simultaneously Roaming is a back‐end interface problem to solve
LoRa‐Alliance.org
Roaming..
•
Roaming is about finding a solution to: Back‐end to back‐end secure connection •
•
•
•
Operator to operator clearing & billing Localizing the end‐devices Transparent device provisioning across multiple networks
LoRa‐Alliance.org
Thank you, come and join us… LoRa‐Alliance.org LoRa‐Alliance.org