MANET Working Group                                         Sanghyun Ahn
Internet Draft                                       University of Seoul
Expires: June 13, 2016                                 December 22, 2015


             Requirements on Network Coding Support in MANET
             draft-ahn-manet-networkcoding-requirement-00.txt

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Abstract

   This document describes the requirements on providing the network
   coding capability in the mobile ad hoc network (MANET). For this,
   the conditions to be considered in providing the network coding
   capability in the MANET are listed.


Table of Contents

   1.  Requirements notation  . . . . . . . . . . . . . . . . . . . .  3
   2.  Introduction . . . . . . . . . . . . . . . . . . . . . . . . .  3
   3.  Requirements on the Provision of Network Coding  . . . . . . .  3
   4.  Other Considerations . . . . . . . . . . . . . . . . . . . . .  4
   References . . . . . . . . . . . . . . . . . . . . . . . . . . . .  4
   Author's Address . . . . . . . . . . . . . . . . . . . . . . . . .  4



































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.  Requirements notation

   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 [RFC2119].


.  Introduction

   The mobile ad hoc network (MANET) is composed of a number of mobile
   nodes which can communicate with each other through multiple
   wireless links without the help of a wired infrastructure.
   Because a wireless link is more restricted in its capacity than a
   wired link, the efficient utilization of wireless links is one of
   the important issues in wireless networs, especially in the MANET.

   The network coding is one of the mechanisms that can increase
   wireless network capacity [1]. In order to provide the network
   coding capability in the MANET, there are many things to be
   considered.

   In this draft, we define the requirements on supporting the network
   coding in the MANET.


.  Requirements on the Provision of Network Coding

   In applying the network coding capability to the MANET, the
   following considerations have to be accomponied with:

   - the delay incurred by waiting at nodes to increase the possibility
     of encodings in a source-to-destination route
   - the number of encodings and decodings experienced by a packet
     in a source-to-destination route
   - the throughput perceived at destinations
   - the base MANET unicast routing protocol, such as AODV [2] or DSR
     [3], on which the network coding capability is applied
   - the degree of changes on the base MANET unicast routing protocol

   With considering the above-mentioned conditions, the provision of
   the network coding capability in the MANET SHOULD satisfy the
   following requirements:

   - The delay incurred by the network coding capability SHOULD be
     controlled such that it does not exceed a certain amount
   - The number of encodings and decodings SHOULD NOT exceed a given
     threshold




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   - The modifications and/or extensions on the base MANET unicast
     routing protocol SHOULD NOT hinder the operation of the base MANET
     unicast routing protocol.


.  Other Considerations

   TBD


References

   [] S. Katti, D. Katabi, W. Hu, H. Rahul and M. M'edard, "The
       Importance of Being Opportunistic: Practical Network Coding
       for Wireless Environments," Annual Allerton Conference on
       Communication, Control, and Computing, September 2005.
   [2] C. Perkins, E. Belding-Royer and S. Das, "Ad hoc On-Demand
       Distance Vector (AODV) Routing," RFC 3561, July 2003.
   [3] D. Johnson, Y. Hu and D. Maltz, "The Dynamic Source Routing
       Protocol," RFC 4728, February 2007.


Author's Address

   Sanghyun Ahn
   University of Seoul
   90, Cheonnong-dong, Tongdaemun-gu
   Seoul 130-743
   Korea
   Email: ahn@uos.ac.kr





















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