BBU Agregation: a usecase of the unified radio and optical control architecture
draft-xxx-ccamp-bbu-aggregation-00

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CCAMP Working Group                                        J. Zhang, Ed.
Internet-Draft                                               S. Liu, Ed.
Intended status: Standards Track                             Z. Liu, Ed.
Expires: December 16, 2019                                    Y. Ji, Ed.
                                                                    bupt
                                                           June 14, 2019

   BBU Agregation: a usecase of the unified radio and optical control
                              architecture
                   draft-xxx-ccamp-bbu-aggregation-00

Abstract

   This document specifies a usecase, called BBU aggregation, for
   integreting radio and optical networks.  It aims to compact several
   low-utilized BBU cards into one BBU to improve the BBU utilization.
   A flexible optical fronthaul network is connecting BBU and RRU to
   enable BBU aggregation by recongfiguring the lightpath between BBU
   and RRU.  The procedure of the usecase is based on the unified radio
   and optical control archtecture, and an extended OpenFlow protocol is
   introduced to realize the procedure.

Status of This Memo

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   This document is subject to BCP 78 and the IETF Trust's Legal
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   (https://trustee.ietf.org/license-info) in effect on the date of

Zhang, et al.           Expires December 16, 2019               [Page 1]
Internet-Draft               BBU Agregation                    June 2019

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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
   2.  Requirements Language . . . . . . . . . . . . . . . . . . . .   3
   3.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   3
   4.  Motivation  . . . . . . . . . . . . . . . . . . . . . . . . .   3
   5.  Overview of BBU aggregation . . . . . . . . . . . . . . . . .   4
     5.1.  Problem . . . . . . . . . . . . . . . . . . . . . . . . .   4
     5.2.  New Messages  . . . . . . . . . . . . . . . . . . . . . .   4
     5.3.  Normal Communication Procedure  . . . . . . . . . . . . .   6
       5.3.1.  Initialization Phase  . . . . . . . . . . . . . . . .   6
       5.3.2.  Lightpath Reconfiguration Request Sent by a
               Controller to a BBU_A . . . . . . . . . . . . . . . .   9
       5.3.3.  Lightpath Reconfiguration Request Sent by a
               Controller to a TN_A  . . . . . . . . . . . . . . . .  10
       5.3.4.  Lightpath Reconfiguration Reply Sent by a BBU_A to a
               Controller  . . . . . . . . . . . . . . . . . . . . .  10
       5.3.5.  Lightpath Reconfiguration Reply Sent by a TN_A to a
               Controller  . . . . . . . . . . . . . . . . . . . . .  11
   6.  the communication protocol Messages for BBU aggregation . . .  12
     6.1.  The RRU_Feature_Req message . . . . . . . . . . . . . . .  13
     6.2.  The RRU_Feature_Rep message . . . . . . . . . . . . . . .  13
     6.3.  The BBU_Feature_Req message . . . . . . . . . . . . . . .  13
     6.4.  The BBU_Feature_Rep message . . . . . . . . . . . . . . .  13
     6.5.  The TN_Feature_Req message  . . . . . . . . . . . . . . .  14
     6.6.  The TN_Feature_Rep message  . . . . . . . . . . . . . . .  14
     6.7.  The BBU_A_Mod message . . . . . . . . . . . . . . . . . .  14
     6.8.  The BBU_A_Rep message . . . . . . . . . . . . . . . . . .  15
     6.9.  The TN_A_Mod message  . . . . . . . . . . . . . . . . . .  15
     6.10. The TN_A_Rep message  . . . . . . . . . . . . . . . . . .  15
   7.  Object Formats  . . . . . . . . . . . . . . . . . . . . . . .  15
     7.1.  Initialization Phase Object . . . . . . . . . . . . . . .  15
       7.1.1.  RRU feature request TLV . . . . . . . . . . . . . . .  15
       7.1.2.  BBU feature request TLV . . . . . . . . . . . . . . .  16
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