MANET Working Group Sanghyun Ahn Internet Draft University of Seoul Expires: June 13, 2016 December 22, 2015 DSR Extensions for Network Coding Capability draft-ahn-manet-networkcoding-dsr-00.txt Status of this Memo This Internet-Draft is submitted to IETF in full conformance with the provisions of BCP 78 and BCP 79. This document may not be modified, and derivative works of it may not be created, except to format it for publication as an RFC or to translate it into languages other than English. Internet-Drafts are working documents of the Internet Engineering Task Force (IETF), its areas, and its working groups. Note that other groups may also distribute working documents as Internet- Drafts. Internet-Drafts are draft documents valid for a maximum of six months and may be updated, replaced, or obsoleted by other documents at any time. It is inappropriate to use Internet-Drafts as reference material or to cite them other than as "work in progress." The list of current Internet-Drafts can be accessed at http://www.ietf.org/ietf/1id-abstracts.txt. The list of Internet-Draft Shadow Directories can be accessed at http://www.ietf.org/shadow.html. This Internet-Draft will expire on June 13, 2016. Copyright Notice Copyright (c) 2015 IETF Trust and the persons identified as the document authors. All rights reserved. This document is subject to BCP 78 and the IETF Trust's Legal Provisions Relating to IETF Documents (http://trustee.ietf.org/ license-info) in effect on the date of publication of this document. Please review these documents carefully, as they describe your rights and restrictions with respect to this document. Ahn Expires June 13, 2016 [Page 1] Internet-Draft DSR Extensions for Network Coding CapabilityDecember 2015 Abstract This document describes how DSR [1] can be extended for the support of network coding capability in the MANET. Because the network coding capability increases the wireless network capacity, in this draft, we describe how we can extend DSR for the support of the network coding capability. Table of Contents 1. Requirements notation . . . . . . . . . . . . . . . . . . . . 3 2. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 3 3. Extensions on DSR Options Header . . . . . . . . . . . . . . . 3 3.1 Extensions on DSR Route Request Option . . . . . . . . . . . . 3 4. Other Considerations . . . . . . . . . . . . . . . . . . . . . 4 References . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Author's Address . . . . . . . . . . . . . . . . . . . . . . . . . 4 Ahn Expires June 13, 2016 [Page 2] Internet-Draft DSR Extensions for Network Coding CapabilityDecember 2015 1. 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]. 2. 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 this draft, we describe how the DSR Options header has to be extended to support the network coding capability. 3. Extensions on DSR Options Header 3.1 Extensions on DSR Route Request Option The Route Request option in the DSR Options header is extended as follows: 0 1 2 3 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Option Type | Opt Data Len | Identification |C| Pt|N| +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Target Address | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Address[1] | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Address[2] | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | ... | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Address[n] | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ Ahn Expires June 13, 2016 [Page 3] Internet-Draft DSR Extensions for Network Coding CapabilityDecember 2015 IP fields: the same as described in [2] Route Request fields: the same as described in [3] except for the N bit N The Network Coding bit to indicate whether a MANET node can be involved in the network coding activities or not. If N bit is 1, the nodes belonging to the source-to-destination route have to turn on the network coding capability. The default value of the N bit is 0. 4. Other Considerations TBD. References [1] M. Tarique, K. E. Tepe, S. Abidi and S. Erfani, "Survey of Multipath Routing Protocols for Mobile Ad Hoc Networks," Journal of Network and Computer Applications, November 2009. [2] D. Johnson, Y. Hu and D. Maltz, "The Dynamic Source Routing Protocol," RFC 4728, February 2007. [3] S. Ahn, "DSR Extensions for Multipath Routing," IETF draft-ahn-manet-multipath-dsr-00.txt, December 2015. Author's Address Sanghyun Ahn University of Seoul 90, Cheonnong-dong, Tongdaemun-gu Seoul 130-743 Korea Email: ahn@uos.ac.kr Ahn Expires June 13, 2016 [Page 4]