A Mechanism Coping with Unexpected Disruption in Space Delay Tolerant Networks
draft-shi-dtn-amcud-04

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Delay-Tolerant Networking Research Group                    Wenfeng Shi
Internet Draft                                                  Qi Xu
Intended status:  Experimental                               Bohao Feng
Expires: December 16, 2017                                 Huachun Zhou
                                           Beijing Jiaotong University
                                                          June 15, 2017

        A Mechanism Coping with Unexpected Disruption in Space Delay
                             Tolerant Networks
                        draft-shi-dtn-amcud-04.txt

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   This Internet-Draft will expire on December 16, 2017.

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Internet-Draft                    amcud                      June 2017

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Abstract

   This document proposes a coping mechanism used to deal with the
   unpredictable disruption problem and congestion control problem in
   Space Delay Tolerant Networks (DTN) [RFC4838]. Since Licklider
   Transmission Protocol (LTP) [RFC5326] provides retransmission-based
   reliability for bundles, several times of retransmissions can be
   seen as a failure occurred over links. The proposed mechanism is
   used to direct the following packets to other nodes as soon as the
   selected path is detected as disruption or congestion and probes the
   availability of the links which has disrupted unexpectedly.

Table of Contents

   1. Introduction ................................................ 2
   2. Conventions used in this document............................ 3                                   
   3. The coping mechanism......................................... 3
   4. Security Considerations...................................... 6                                  
   5. IANA Considerations ......................................... 7
   6. References .................................................. 7

1. Introduction

   Since the moving trajectory of nodes is scheduled in the space
   network, it's possible to have a prior knowledge of contact
   information between any nodes. Consequently, routing algorithms such
   as Contact Graph Routing (CGR) [CGR] can calculate a delivery path
   from the source to destination hop by hop based on the connectivity
   relationship, propagation delay, data rate, etc.

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Internet-Draft                    amcud                      June 2017

   However, due to the complexity of the space network, the satellite
   and its associated links suffer from the electromagnetic
   interference frequently and this may lead to unpredictable
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