One document matched: draft-yang-manet-improvedinsignia-00.txt
manet Working Group
Internet-Draft Tan Yang,
Shuguang Zhang,
Yidong Cui,
Yuehui Jin
Intended status: Expected Beijing University of
Posts and Telecom
Expires: January 2010 July 2009
Improved INSIGNIA Based on Network measurement
draft-yang-manet-improvedinsignia-00.txt
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Yang, et al. Expires - January 2009 [Page 1]
Internet-Draft Improved INSIGNIA Based on Network measurement July 2009
Abstract
This document specifies an improved version of INSIGNIA[1][2], which
is a framework supporting quality of service(QOS) in mobile ad hoc
networks. INSIGNIA is an in-band signaling system, and 'in-band
signaling' means the control information is carried along with data
in IP packets. In this memo we introduce network measurement into
INSIGNIA, and then this system can highly responsive to changes of
performance on mobile ad hoc networks.
Table of Contents
1. Introduction...................................................2
1.1 Assumptions................................................2
2. Improved INSIGNIA protocol.....................................2
2.1 Improved IP options........................................3
2.2 QOS parameters.............................................3
3. Improved INSIGNIA adaptation operations........................3
Security Considerations...........................................4
References........................................................4
Acknowledgments...................................................5
Author's Addresses................................................5
1.
Introduction
INSIGNIA is an in-band signaling system that supports fast flow
reservation, restoration and adaptation algorithms that are
specifically designed to deliver adaptive real-time services in
mobile ad hoc networks. For full details of INSIGNIA please see[2].
In INSIGNIA requested bandwidth should be adjusted based on the
measured channel capacity/utilization. As only bandwidth information
can not reflect the performance comprehensively, this memo provides a
supplement for INSIGNIA. More performance metrics can be used for
admission control and resource reservation based on network
measurement.
1.1
Assumptions
We assume that performance metrics, e.g. one-way delay, one-way loss
rate, one-way jitter, can be obtained through some network
measurement technology in the mobile ad hoc network.
2.
Improved INSIGNIA protocol
We add a new bit into INSIGNIA IP options, which is used to load the
performance metrics measured by intermediate nodes on a path.
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Internet-Draft Improved INSIGNIA Based on Network measurement July 2009
2.1
Improved IP options
INSIGNIA uses a new IP option to setup restore and adapt resource
between packets with source-destination pairs. Based on INSIGNIA IP
options, we add QOS parameters (QOS_PARA) fields into the INSIGNIA IP
options, which is illustrated in Figure 1.
Reservation payload bandwidth bandwidth QOS
Mode type indicator request parameters
+----------+----------+----------+--------------+-----------+
| RES/BE | BQ EQ | MAX/MIN | MAX | MIN | QOS_PARA |
+----------+----------+----------+--------------+-----------+
|<-------->|<-------->|<-------->|<------------>|<--------->|
1 bit 1 bit 1 bit 16bits m bits
Figure 1. Improved INSIGNIA IP options
2.2
QOS parameters
The measure of performance metrics are carried in the QOS parameters
field, as illustrated in Figure 2.
Address of node bottleneck one-way
with largest delay bandwidth loss
+------------------+-----------+----------+--------+-------+-------+
| MAX_QAddr | BNAddr | BN | OWD | OWL | OWJ |
+------------------+-----------+----------+--------+-------+-------+
Address of one-way one-way
Bottleneck delay jitter
|<---------------->|<--------->|<-------->|<------->|<---->|<----->|
32 bits 32 bits 8 bits 8 bits 8 bits 8 bits
Figure 2. Details of QOS_PARA field
The MAX_QAddr field indicates the address of node with the largest
queue delay on a path. The BNAddr field indicates the address of
bottleneck node along a path. The BN field indicates the bottleneck
bandwidth of a path. The OWD field indicates the one-way delay. The
OWL field indicates one-way loss. The OWJ field indicates one-way
jitter.
Note that the fields in QOS_PARA should be tailored in accordance
with required types of performance metrics.
3.
Improved INSIGNIA adaptation operations
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The new adaptation operation based on INSIGNIA is different among
source nodes, intermediate nodes and destination nodes.
New adaptation procedures on source nodes:
[1] Fields in QOS_PARA should be initialized in accordance with
required types of performance metrics before forwarding reservation
request packets toward destination node.
[2] When QOS reports are sent to source host, some data processing
are done according to the data in QOS_PARA field. For example, an
active flow is rerouted to avoid passing the bottleneck node or node
with the largest queue delay on the path according to data in BNAddr
field or MAX_QAddr field, respectively; bandwidth requirements of the
flow specified in the bandwidth request field is reduced if data in
BN field is smaller than requested; The service type may be degraded
adaptively according to the OWD or OWL field; generation rate of the
flow is reduced if value of OWJ field is larger than a threshold.
New adaptation procedures on intermediate nodes:
[1] When intermediate nodes receive request packets, they attempt to
reserve, restore or adapt resources forwarding data packets toward
the destination and do some measurement.
[2] The measured performance metrics are encapsulated into the
QOS_PARA field.
New adaptation procedures on destination nodes:
[1] Destination nodes generate QOS reports which include QOS
statistics obtained by intermediate nodes, and sent them to source.
4.
Security Considerations
Active network measurement should be tuned well to avoiding active
attacks.
5.
References
[1] G-S.Ahn,S-B.Lee,A.T.Cambell and X.Zhang,"INSIGNIA",draft-ietf-
manet-insignia-01.txt, October 1999.
[2] S-B.Lee, G-S.Ahn, X.Zhang, A.T.Cambell, "INSIGNIA: A QoS
Framework for Mobile Ad Hoc Networks", Journal of Parallel and
Distributed Computing, Jan 2000.
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Internet-Draft Improved INSIGNIA Based on Network measurement July 2009
6.
Acknowledgments
This work is supported by National High Technology Research and
Development Program of China (Grant No. 2006AA01Z235).
Author's Addresses
Tan Yang, ShuGuang Zhang, Yidong Cui, Yuehui Jin
State Key Laboratory of Networking and Switching Technology, Beijing
University of Posts and Telecommunications
10 Xitucheng Road, Haidian District,Beijing, P.R.China,100876
Phone: +86 010-62282008-6081
Email: atomoto@gmail.com, zhang_sg_bfw@163.com, {cyd,
yhjin}@bupt.edu.cn
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