Proactive Discovery of CoRE Resource Directories
draft-djamaa-core-proactive-rd-discovery-00

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CoRE                                                         B. Djamaa
                                                             A. Yachir
Internet Draft                                          EMP University
Intended status: Experimental                           March 31, 2019
Expires: September 2019

              Proactive Discovery of CoRE Resource Directories
              draft-djamaa-core-proactive-rd-discovery-00.txt

Abstract

   The CoRE working group has proposed a Resource Directory (RD)
   solution to facilitate the discovery of the resources provided by
   constrained sensor and actuator networks. For such a mechanism to be
   effectively deployable, endpoints must first discover the existence
   of an RD in the network before being able to exploit its
   functionalities. This document presents Proactive RD Discovery
   (PRD); a scalable and effective mechanism to discover RDs. To 
   achieve such qualities, PRD follows an announce-based model that 
   builds upon CoAP Group Communication. PRD aims to provide important 
   performance in terms of energy consumption, generated traffic, 
   expressivity, and RD discovery time.

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Internet-Draft     Proactive Discovery of CoRE RDs          March 2019

   This Internet-Draft will expire on September 31, 2019.

Copyright Notice

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   This document is subject to BCP 78 and the IETF Trust's Legal
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Table of Contents

   1. Introduction ................................................ 3
      1.1. Context ................................................ 3
      1.2. Terminology ............................................ 4
      1.3. Motivations ............................................ 4
   2. Background on Group Communication............................ 6
   3. PRD Overview ................................................ 6
   4. PRD Operations .............................................. 8
      4.1. Directory advertisement messages ....................... 8
         4.1.1. DA generation and forwarding ...................... 8
         4.1.2. DA Processing ..................................... 10
         4.1.3. Registration Maintenance and Update ............... 11
      4.2. Directory Solicitation messages ........................ 12
         4.2.1. DS Generation and Forwarding ...................... 12
         4.2.2. DS Processing ..................................... 13
      4.3. Directory Registration Removal ......................... 13
         4.3.1. DR Generation and Forwarding ...................... 13
         4.3.2. DR Processing ..................................... 14
   5. Multiple RD Discovery ....................................... 14
   6. Security Considerations ..................................... 15
   7. IANA Considerations ......................................... 15
   8. References .................................................. 15
      8.1. Normative References ................................... 15
      8.2. Informative References ................................. 15
   9. Acknowledgments ............................................. 16

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1. Introduction

 1.1. Context

   The Constrained Application Protocol (CoAP) [RFC7252] provides a
   unified mechanism to exchange application data in LLNs. Thus,
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