Internet Engineering Task Force A. Minaburo, Ed. Internet-Draft Acklio Intended status: Informational L. Toutain, Ed. Expires: December 10, 2016 Telecom Bretagne Y. Delibie, Ed. Kerlink June 8, 2016 YANG module for LoRa Networks draft-minaburo-yang-lora-00 Abstract This document presents a YANG module definition for managing LoRa- based devices. Status of This Memo This Internet-Draft is submitted in full conformance with the provisions of BCP 78 and BCP 79. Internet-Drafts are working documents of the Internet Engineering Task Force (IETF). Note that other groups may also distribute working documents as Internet-Drafts. The list of current Internet- Drafts is at http://datatracker.ietf.org/drafts/current/. Internet-Drafts are draft documents valid for a maximum of six months and may be updated, replaced, or obsoleted by other documents at any time. It is inappropriate to use Internet-Drafts as reference material or to cite them other than as "work in progress." This Internet-Draft will expire on December 10, 2016. 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 (http://trustee.ietf.org/license-info) in effect on the date of publication of this document. Please review these documents carefully, as they describe your rights and restrictions with respect to this document. Code Components extracted from this document must include Simplified BSD License text as described in Section 4.e of the Trust Legal Provisions and are provided without warranty as described in the Simplified BSD License. Minaburo, et al. Expires December 10, 2016 [Page 1] Internet-Draft YANG module for LoRa Networks June 2016 Table of Contents 1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2 1.1. Requirements Language . . . . . . . . . . . . . . . . . . 2 2. LoRa Data Model . . . . . . . . . . . . . . . . . . . . . . . 3 3. LoRa YANG module . . . . . . . . . . . . . . . . . . . . . . 3 4. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . 6 5. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 6 6. Security Considerations . . . . . . . . . . . . . . . . . . . 6 7. References . . . . . . . . . . . . . . . . . . . . . . . . . 7 7.1. Normative References . . . . . . . . . . . . . . . . . . 7 7.2. Informative References . . . . . . . . . . . . . . . . . 7 Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 7 1. Introduction This document provides a YANG module description for managing a LoRa endpoints. SemTech [LoRa] (c) is a low-rate, low-power, long-range radio technology. It could be used as a base radio technology for building Low-Rate Wide-Area Networks (LR-WAN), also known as LPWA (Low-Power Wide Area). SemTech [LoRa] (c) has the following characteristics: o Works in narrow, license-free (ISM) bands with good propagation properties (< 1GHz) o Low- to very-low throughput (270 bps--200 kbps) o Low-power operation (25 mW in Europe) o Far-Reaching communication capabilities (20 km with line-of-sight, several km in urban environment) o Strong channel access restrictions (1% to 10% duty cycling) The management of LoRa-based devices can be done through a standard approach, compatible with the best network-operator practices, namely NETCONF or RESTCONF. A formal definition of the parameters and the values to be managed is thus required, which can be done with the YANG module language. The following document presents a YANG module definition for managing a LoRa-based end-device. 1.1. Requirements Language The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this document are to be interpreted as described in RFC 2119 [RFC2119]. Minaburo, et al. Expires December 10, 2016 [Page 2] Internet-Draft YANG module for LoRa Networks June 2016 2. LoRa Data Model The data model has the following structure for Lora configuration: +- RW ietf-lora +- RW Lora +- RW Mode | +- RW Channel Bandwidth enumeration | +- RW Coding Rate enumeration | +- RW Spreading Factor int8 +- Physical Layer | +- RW Preamblelength int32 | +- RW Channel Frequency Range enumeration | +- RW Channel int8 | +- RW SymbolTimeout int32 +- MAC Layer +- RW FrPayloadEncryption boolean +- RW Delay int32 +- RW FixlengthPayloadOn boolean The data model defines a state container Mode which include the three principal characteristics of the LoRA interface which determine the parameters of the channel Figure 1 3. LoRa YANG module This model imports typedefs from [RFC6991]. module lora { namespace "urn:lora"; prefix lo; import ietf-interfaces { prefix if; } organization "Acklio"; contact "Ana Minaburo Minaburo, et al. Expires December 10, 2016 [Page 3] Internet-Draft YANG module for LoRa Networks June 2016 ana@minaburo.com"; description "This module contains a collection of YANG definitions for configuring the LORA () network interface. Copyright (c) 2015 IETF Trust and the persons identified as authors of the code. All right reserved. Redistribution and use in source binary forms, with or without modification, is permitted pursuant to, and subject to the license terms contained in, the Simplified BSD License Relating to IETF Documents (http://trustee.ietf.org/license-info) This YANG module version is part of draft-minaburo-yang-lora-00; see the draft itself for full legal notices."; revision 2015-11-01 { description "Initial Description"; reference "LoRa MAC Class A Specification R3.1 by Semtech"; } grouping mode { description "Principal factors to change modulation"; leaf channel-bandwidth { description "Physical Channel Bandwidth"; type enumeration { enum 125 { description "125 KHz"; value 0; } enum 150 { description "150 KHz"; value 1; } enum 500 { description "500 KHz"; value 2; } } } leaf coding-rate { description "LORA error correction scheme"; type enumeration { enum 4_5 { description "value 1; } enum 4_6 { value 2; } enum 4_7 { value 3; } enum 4_b { value 4; } } } leaf spreading-factor { Minaburo, et al. Expires December 10, 2016 [Page 4] Internet-Draft YANG module for LoRa Networks June 2016 description "Modulation to enable spread signals to transmit signals at the same time"; type uint8 { range "6 .. 12"; } } } augment "/if:interfaces/if:interface" { description " // To be defined later"; when "if:type = 'ianaieft:lora'"; description "LORA channel"; container lora { uses mode; container physical-layer { description "LORA phisical layer"; leaf preamble-length { description "Header packet definition"; type int32; default 7; } leaf channel-frequency-range { description "Band Choice depends on Country"; type enumeration { mandatory true; enum europe; enum usa; enum japan; enum china; } } leaf channel { description "Physical Channels"; type uint8 { range "0..10"; } } leaf symbol-timeout { description "Waiting the free band"; type uint32; } } Minaburo, et al. Expires December 10, 2016 [Page 5] Internet-Draft YANG module for LoRa Networks June 2016 container mac-layer { description " LORA MAC layer format"; leaf payload-encryption { description "Known if the encryption is used"; type boolean; default "false"; } leaf delay { description "Delay value"; type int32; } leaf fixed-length-payload { description "If Modulation is not variable"; type boolean; default "false"; } } } } } The data model defines a state container Mode which include the three principal characteristics of the LoRA interface which determine the parameters of the channel Figure 2 4. Acknowledgements We want to thank Alexander Pelov for all his inputs and corrections on this work 5. IANA Considerations This memo includes no request to IANA. 6. Security Considerations All drafts are required to have a security considerations section. See RFC 3552 [RFC3552] for a guide. TO DO Minaburo, et al. Expires December 10, 2016 [Page 6] Internet-Draft YANG module for LoRa Networks June 2016 7. References 7.1. Normative References [RFC2119] Bradner, S., "Key words for use in RFCs to Indicate Requirement Levels", BCP 14, RFC 2119, DOI 10.17487/RFC2119, March 1997, . 7.2. Informative References [LoRa] Semtech, "https://web.archive.org/web/20150510011904/ https://www.semtech.com/wireless-rf/lora.html", May 2015. [RFC3552] Rescorla, E. and B. Korver, "Guidelines for Writing RFC Text on Security Considerations", BCP 72, RFC 3552, DOI 10.17487/RFC3552, July 2003, . Authors' Addresses Ana Minaburo (editor) Acklio 2bis rue de la Chataigneraie Cesson-Sevigne, Bretagne 35510 FR Email: ana@ackl.io Laurent Toutain (editor) Telecom Bretagne 2 Rue de la Chataigneraie Cesson-Sevigne, Bretagne 35510 FR Phone: +33299127026 Email: laurent.toutain@telecom-bretagne.eu Yannick Delibie (editor) Kerlink 1 rue Jacqueline Auriol Thorigne-Fouillard, Bretagne 35235 FR Phone: +33299122900 Email: yannick.delibie@kerlink.fr Minaburo, et al. Expires December 10, 2016 [Page 7]