LPWAN Static Context Header Compression (SCHC) over NB-IoT
draft-minaburo-lpwan-nbiot-hc-01

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lpwan Working Group                                          A. Minaburo
Internet-Draft                                                    Acklio
Intended status: Informational                                  E. Ramos
Expires: March 8, 2019                                          Ericsson
                                                       S. Shanmugalingam
                                                                  Acklio
                                                      September 04, 2018

       LPWAN Static Context Header Compression (SCHC) over NB-IoT
                    draft-minaburo-lpwan-nbiot-hc-01

Abstract

   The Static Context Header Compression (SCHC) specification describes
   a header compression and fragmentation functionalities for LPWAN (Low
   Power Wide Area Networks) technologies.  SCHC was designed to be
   adapted over any of the LPWAN technologies.

   This document describes the use of SCHC over the NB-IoT wireless
   access, and provides elements for an efficient parameterization.

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   This document is subject to BCP 78 and the IETF Trust's Legal
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Minaburo, et al.          Expires March 8, 2019                 [Page 1]
Internet-Draft                 SCHC NB-IoT                September 2018

   carefully, as they describe your rights and restrictions with respect
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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   3
   3.  Architecture  . . . . . . . . . . . . . . . . . . . . . . . .   4
     3.1.  Data Transmission . . . . . . . . . . . . . . . . . . . .   5
     3.2.  Data Transmission over User Plane . . . . . . . . . . . .   6
       3.2.1.  Packet Data Convergence Protocol (PDCP) . . . . . . .   7
       3.2.2.  Radio Link Protocol (RLC) . . . . . . . . . . . . . .   7
       3.2.3.  Medium Access Control (MAC) . . . . . . . . . . . . .   8
     3.3.  Data Over Control Plane . . . . . . . . . . . . . . . . .   9
     3.4.  SCHC entities . . . . . . . . . . . . . . . . . . . . . .  13
   4.  Static Context Header Compression . . . . . . . . . . . . . .  13
     4.1.  SCHC Rules  . . . . . . . . . . . . . . . . . . . . . . .  13
     4.2.  Packet processing . . . . . . . . . . . . . . . . . . . .  13
     4.3.  SCHC Context  . . . . . . . . . . . . . . . . . . . . . .  13
   5.  Fragmentation . . . . . . . . . . . . . . . . . . . . . . . .  13
     5.1.  Fragmentation modes . . . . . . . . . . . . . . . . . . .  14
     5.2.  Fragmentation Parameters  . . . . . . . . . . . . . . . .  14
   6.  Padding . . . . . . . . . . . . . . . . . . . . . . . . . . .  14
   7.  Security considerations . . . . . . . . . . . . . . . . . . .  14
   8.  Appendix  . . . . . . . . . . . . . . . . . . . . . . . . . .  14
     8.1.  NB-IoT example with mobility  . . . . . . . . . . . . . .  15
   9.  Informative References  . . . . . . . . . . . . . . . . . . .  15
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  16

1.  Introduction

   The Static Context Header Compression (SCHC)
   [I-D.ietf-lpwan-ipv6-static-context-hc] defines a header compression
   scheme and fragmentation functionality, both specially tailored for
   Low Power Wide Area Networks (LPWAN) networks defined in
   [I-D.ietf-lpwan-overview].

   Header compression is needed to efficiently bring Internet
   connectivity to the node within an NB-IoT network.  SCHC uses an
   static context to performs header compression with specific
   parameters that need to be adapted into the NB-IoT wireless access.
   This document assumes functionality for NB-IoT of 3GPP release 15
   otherwise other versions functionality is explicitly mentioned in the
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