LoRaWAN Overview
draft-farrell-lpwan-lora-overview-01

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lpwan                                                         S. Farrell
Internet-Draft                                    Trinity College Dublin
Intended status: Informational                                  A. Yegin
Expires: May 1, 2017                                            Actility
                                                        October 28, 2016

                            LoRaWAN Overview
                  draft-farrell-lpwan-lora-overview-01

Abstract

   Low Power Wide Area Networks (LPWAN) are wireless technologies
   covering different Internet of Things (IoT) applications.  The common
   characteristics for LPWANs are large coverage, low bandwidth, small
   packet and application layer data sizes and long battery life
   operation.  One of these technologies is LoRaWAN developed by the
   LoRa Alliance.  LoRaWAN targets key requirements of the Internet of
   things such as secure bi-directional communication, mobility and
   localization services.  This memo is an informational overview of
   LoRaWAN and gives the principal characteristics of this technology in
   order to help with the IETF work for providing IPv6 connectivity over
   LoRaWAN along with other LPWANs.

Status of This Memo

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   This Internet-Draft will expire on May 1, 2017.

Copyright Notice

   Copyright (c) 2016 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

   This document is subject to BCP 78 and the IETF Trust's Legal
   Provisions Relating to IETF Documents

Farrell & Yegin            Expires May 1, 2017                  [Page 1]
Internet-Draft                lora overview                 October 2016

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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   3
   3.  Radio Spectrum  . . . . . . . . . . . . . . . . . . . . . . .   4
   4.  MAC Layer . . . . . . . . . . . . . . . . . . . . . . . . . .   6
   5.  Names and Addressing  . . . . . . . . . . . . . . . . . . . .   8
   6.  Security Considerations . . . . . . . . . . . . . . . . . . .  10
     6.1.  Payload Encryption and Data Integrity . . . . . . . . . .  10
     6.2.  Key Derivation  . . . . . . . . . . . . . . . . . . . . .  10
   7.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  11
   8.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .  11
   9.  Contributors  . . . . . . . . . . . . . . . . . . . . . . . .  11
   10. Informative References  . . . . . . . . . . . . . . . . . . .  12
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  12

1.  Introduction

   LoRaWAN is a wireless technology for long-range low-power low-data-
   rate applications developed by the LoRa Alliance, a membership
   consortium.  <https://www.lora-alliance.org/> LoRaWAN networks are
   typically organized in a star-of-stars topology in which gateways
   relay messages between end-devices and a central "network server" in
   the backend.  Gateways are connected to the network server via IP
   links while end-devices use single-hop LoRaWAN communication that can
   be received at one or more gateways.  All communication is generally
   bi-directional, although uplink communication from end-devices to the
   network server are favoured in terms of overall bandwidth
   availability.

   In LoRaWAN networks, end-device transmissions may be received at
   multiple gateways, so during nominal operation a network server may
   see multiple instances of the same uplink message from an end-device.

   To maximize both battery life of end-devices and overall network
   capacity, the LoRaWAN network infrastructure manages the data rate
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