Information technology — Underwater acoustic sensor network (UWASN) — Part 2: Reference architecture

ISO/IEC 30140-2:20017(E) This part of ISO/IEC 30140 provides an underwater acoustic sensor network (UWASN) conceptual model by identifying and defining three domains (application domain, network domain and UWASN domain). It also provides multiple reference architecture views consistent with the requirements defined in ISO/IEC 30140-1 (systems reference architecture, communication reference architecture and information reference architecture). For each view, related physical and functional entities are described.

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Status
Published
Publication Date
29-Oct-2017
Current Stage
6060 - International Standard published
Due Date
28-Nov-2017
Completion Date
30-Oct-2017
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ISO/IEC 30140-2
Edition 1.0 2017-10
INTERNATIONAL
STANDARD

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Information technology – Underwater acoustic sensor network (UWASN) –
Part 2: Reference architecture

ISO/IEC 30140-2:2017-10(en)

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ISO/IEC 30140-2


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INTERNATIONAL



STANDARD








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Information technology – Underwater acoustic sensor network (UWASN) –

Part 2: Reference architecture


























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– 2 – ISO/IEC 30140-2:2017 © ISO/IEC 2017
CONTENTS
FOREWORD . 4
INTRODUCTION . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
4 Abbreviated terms . 7
5 Purpose of UWASN reference architecture (UWASN RA) . 9
6 UWASN conceptual model . 10
7 Configuration of UWASN RA – Systems reference architecture (SRA) . 11
7.1 General . 11
7.2 System-level physical entities . 13
7.2.1 Overview . 13
7.2.2 Physical entities . 13
7.3 High-level SRA view . 20
7.4 SRA from system service view . 21
8 Configuration of UWASN RA – Communication reference architecture (CRA) . 21
8.1 High-level CRA view . 21
8.2 CRA from network connectivity view . 25
8.2.1 UWA-Physical layer . 25
8.2.2 UWA-Datalink layer . 26
8.2.3 UWA-Network layer . 27
8.2.4 UWA-Bundle layer . 27
8.2.5 UWA-Application layer . 28
8.2.6 Functional modules. 29
8.2.7 Essential concept of functional entities . 29
9 Configuration of UWASN RA – Information reference architecture (IRA) . 32
9.1 High-level IRA view . 32
9.2 IRA from information service view . 34
9.2.1 General . 34
9.2.2 Information gathering layer . 35
9.2.3 Information delivering layer . 35
9.2.4 Application and service layer . 35
9.2.5 Information domain view . 35
9.2.6 Information service view . 36
Bibliography . 38

Figure 1 – UWASN system conceptual model . 10
Figure 2 – UWASN systems reference architecture . 12
Figure 3 – Physical entities of a UWASN . 14
Figure 4 – Physical architecture of underwater sensor node . 16
Figure 5 – Underwater sensor node (UWA-SNode) architecture . 17
Figure 6 – Underwater gateway architecture . 18
Figure 7 – Unmanned underwater vehicle architecture . 19
Figure 8 – Underwater device architecture . 20

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ISO/IEC 30140-2:2017 © ISO/IEC 2017 – 3 –
Figure 9 – Graphical representation of the interoperable UWASN RA from a service
point of view . 21
Figure 10 – UWASN communication reference architecture . 22
Figure 11 – Underwater acoustic communication architecture . 24
Figure 12 – Underwater acoustic sensor network architecture . 25
Figure 13 – UWA-PHY layer reference model . 26
Figure 14 – UWA-DL layer reference model . 26
Figure 15 – UWA-NWK layer reference model . 27
Figure 16 – UWA-Bundle layer reference model . 28
Figure 17 – UWA-APS layer reference model . 28
Figure 18 – Functional entities of UWASN . 30
Figure 19 – UWASN IRA . 33
Figure 20 – Underwater information service architecture . 35
Figure 21 – Underwater information domain view . 36
Figure 22 – Underwater information service view . 37

Table 1 – UWASN systems reference architecture . 12
Table 2 – UWASN communication reference architecture (UWASN CRA) . 23
Table 3 – Functional model and descriptions in UWASN . 30
Table 4 – Interrelationship between functional and physical entities of UWASN . 32
Table 5 – UWASN information reference architecture (UWASN IRA) . 34

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– 4 – ISO/IEC 30140-2:2017 © ISO/IEC 2017
INFORMATION TECHNOLOGY –
UNDERWATER ACOUSTIC SENSOR NETWORK (UWASN) –

Part 2: Reference architecture
FOREWORD
1) ISO (the International Organization for Standardization) and IEC (the International Electrotechnical Commission)
form the specialized system for worldwide standardization. National bodies that are members of ISO or IEC
participate in the development of International Standards through technical committees established by the
respective organization to deal with particular fields of technical activity. ISO and IEC technical committees
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established a joint technical committee, ISO/IEC JTC 1.
2) The formal decisions or agreements of IEC and ISO on technical matters express, as nearly as possible, an
international consensus of opinion on the relevant subjects since each technical committee has representation
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responsible for the way in which they are used or for any misinterpretation by any end user.
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9) Attention is drawn to the possibility that some of the elements of this ISO/IEC publication may be the subject of
patent rights. ISO and IEC shall not be held responsible for identifying any or all such patent rights.
International Standard ISO/IEC 30140-2 was prepared by subcommittee 41: Internet of Things
and related technologies, of ISO/IEC joint technical committee 1: Information technology.
The list of all currently available parts of the ISO/IEC 30140 series, under the general title
Information technology – Underwater acoustic sensor network (UWASN), can be found on the
IEC and ISO websites.
This International Standard has been approved by vote of the member bodies, and the voting
results may be obtained from the address given on the second title page.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
IMPORTANT – The 'colour inside' logo on the cover page of this publication indicates
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ISO/IEC 30140-2:2017 © ISO/IEC 2017 – 5 –
INTRODUCTION
Water covers approximately 71 % of the Earth’s surface. Modern technologies introduce new
methods to monitor the bodies of water, for example, pollution monitoring and detection.
Underwater data-gathering techniques require exploring the water environment, which can be
most effectively performed by underwater acoustic sensor networks (UWASNs). Applications
developed for the UWASNs can record underwater climate, detect and control water pollution,
monitor marine biology, discover natural resources, detect pipeline leakages, monitor and
locate underwater intruders, perform strategic surveillance, and so on.
The ISO/IEC 30140 series provides general requirements, reference architecture (RA)
including the entity models and high-level interface guidelines supporting interoperability
among UWASNs in order to provide the essential UWASN construction information to help
and guide architects, developers and implementers of UWASNs.
Additionally, the ISO/IEC 30140 series provides high-level functional models related to
underwater sensor nodes and relationships among the nodes to construct the architectural
perspective of UWASNs. However, the ISO/IEC 30140 series is an application agnostic
standard. Thus, ISO/IEC 30140 series specifies neither any type of communication waveforms
for use in UWASNs nor any underwater acoustic communication frequencies. Specifying
communication waveforms and/or frequencies are the responsibility of architects, developers
1
and implementers.
Acoustical data communication in sensor networks necessitates the introduction of acoustical
signals that overlap biologically important frequency bands into the subject environment.
These signals may conflict with regional, national or international noise exposure regulations.
Implementers of acoustical communication networks should consult the relevant regulatory
agencies prior to designing and deployment of these systems to ensure compliance with
regulations and avoid conflicts with the agencies.
The purpose of the ISO/IEC 30140 series is to provide general requirements, guidance and
facilitation in order for the users of the ISO/IEC 30140 series to design and develop the target
UWASNs for their applications and services.
The ISO/IEC 30140 series comprises four parts as shown below.
• Part 1 provides a general overview and requirements of the UWASN reference
architecture.
• Part 2 provides reference architecture models for UWASN.
• Part 3 provides descriptions for the entities and interfaces of the UWASN reference
architecture.
• Part 4 provides information on interoperability requirements among the entities within a
UWASN and among various UWASNs.
___________
1
 Architects, developers and implementers need to be aware of the submarine emergency frequency band, near
and below 12 kHz, and it is recommended to provide a provision for such submarine emergency band in their
UWASN design and applications.

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INFORMATION TECHNOLOGY –
UNDERWATER ACOUSTIC SENSOR NETWORK (UWASN) –

Part 2: Reference architecture



1 Scope
This part of ISO/IEC 30140 provides a UWASN conceptual model by identifying and defining
three domains (application domain, network domain and UWASN domain).
It also provides UWASN reference architecture multiple views consistent with the
requirements defined in ISO/IEC 30140-1:
a) UWASN systems reference architecture;
b) UWASN communication reference architecture;
c) UWASN information reference architecture.
For each view, related physical and functional entities are described.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their
content constitutes requirements of this document. For dated references, only the edition
cited applies. For undated references, the latest edition of the referenced document (including
any amendments) applies.
ISO/IEC 29182-2, Information technology – Sensor networks: Sensor Network Reference
Architecture (SNRA) – Part 2: Vocabulary and terminology
ISO/IEC 30140-1, Information technology – Underwater acoustic sensor network (UWASN) –
2
Part 1: Overview and requirements
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO/IEC 29182-2 apply.
ISO and IEC maintain terminological databases for use in standardization at the following
addresses:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp
___________
2
Under preparation. Stage at time of publication: ISO/IEC FDIS 30140-1:2017.

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ISO/IEC 30140-2:2017 © ISO/IEC 2017 – 7 –
4 Abbreviated terms
2D two-dimensional
3D three-dimensional
3G third generation
4G fourth generation
A/D analog-to-digital converter
AODV ad hoc on demand distance vector
APS IB application layer information base
APSDE application layer data entity
APSME application layer management entity
ASK amplitude shift keying
AUV autonomous underwater vehicle
BLDE bundle layer data entity
BLME bundle layer management entity
BUN IB bundle layer information base
CDMA code division multiple access
CLA convergence layer adapter
CM communication module
CPU central processing unit
CRA communication reference architecture
CSMA carrier sense multiple access
D/A digital-to-analog converter
DB database
DG distance group
DSDV destination-sequenced distance vector routing
DSR dynamic source routing
DTN delay and disruption tolerant network
HAL hardware abstraction layer
FSK frequency shift keying
GFG greedy-face-greedy
GPRS general packet radio service
HAL hardware layer
IB information base
2
I C inter-integrated circuit
IP Internet protocol
IRA information reference architecture
kbps kilobits per second
LAN local area network
MAC IB datalink layer information base
MAC media access control
MCU microcontroller unit
MFSK multiple frequency shift keying

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MIMO multi-input multi-output
MLDE MAC layer data entity
MLME MAC layer management entity
MM micro controller module
MSDU mac service data unit
NLDE network layer data entity
NLME network layer management entity
NWK IB network layer information base
OFDM orthogonal frequency division multiplexing
OLSR optimized link state routing
OS operating system
PC personal computer
PDU protocol data unit
PHY IB physical layer information base
PIT passive integrated transponder
PLDE physical layer data entity
PLME physical layer management entity
PSK phase shift keying
PTKF partial topology knowledge forwarding
PWM pulse width modulation
QAM quadrature amplitude modulation
QoS quality of service
RA reference architecture
REST representational state transfer
RF radio frequency
RFID radio-frequency identification
ROV remotely operated underwater vehicle
SAP service access point
SCI serial communication interface
SDV switched digital video
SIM sensor interface module
SIMO single-input multi-output
SISO single-input single-output
SM service module
SPI serial peripheral interface
SRA system reference architecture
TDMA time division multiple access
UART universal asynchronous receiver/transmitter
UUV unmanned underwater vehicle
UWA-APS underwater application layer
UWA-BUN underwater bundle layer
UWA-CH underwater acoustic cluster head
UWA-EUN underwater acoustic extend united network

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ISO/IEC 30140-2:2017 © ISO/IEC 2017 – 9 –
UWA-FN underwater acoustic fundamental network
UWA-GW underwater acoustic gateway
UWA-DL underwater datalink layer
UWA-NWK underwater network layer
UWA-PHY underwater physical layer
UWASN underwater acoustic sensor network
UWA-SNode underwater acoustic sensor node
UWA-UN underwater acoustic united network
WAN wide area network
Wi-Fi wireless fidelity
5 Purpose of UWASN reference architecture (UWASN RA)
This document provides reference architecture views consistent with the requirements which
are defined in ISO/IEC 30140-1.
A UWASN reference architecture (UWASN RA) is a generalized architecture sharing one or
more common domains of several end systems, giving direction downward and requiring
compliance upward. In other words, the developer can reuse entities and elements in the
reference architecture that fit the developers’ application or target architecture. In addition,
the UWASN reference architecture provides standards and guidelines for building a specific
architecture for underwater environment.
The combination of these architecture perspectives and views forms a comprehensive
architectural description of a UWASN system. Reference architecture perspectives and views
are to:
a) specify how UWASNs operate;
b) specify systems of equipment and flows of information which support UWASNs;
c) specify technical rules and guidelines which allow these systems to interoperate.
UWASN RA provides the rules and guidance for developing and presenting the architecture
descriptions.
This document provides multiple views of the technical architecture of UWASN:
1) overview of UWASN reference architecture;
2) UWASN systems reference architecture;
3) UWASN communication reference architecture;
4) UWASN information reference architecture.
The UWASN supports development of interacting architectures. UWASN defines the multiple
perspectives of UWASN reference architecture and multiple views of the technical
architecture. All views are made up of sets of architecture data elements. The UWASN
defines relationship between architectural views and the data elements.

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– 10 – ISO/IEC 30140-2:2017 © ISO/IEC 2017
6 UWASN conceptual model
The UWASN conceptual model shown in Figure 1 depicts the common domains that are
identified in various UWASN systems and each of the presented domains. In this document,
the UWASN reference architecture is described using the domains shown in Figure 1 and this
conceptual model is extended to develop the three UWASN reference architectures which
describe common entities and interfaces in each domain for various UWASN systems
applications and services.
The UWASN RA describes the key technology that enables “a UWASN system”. In most
UWASN systems, there are three main technologies involved: system technology,
communication technology and information technology. The UWASN reference architecture
views are described and focused on these three technologies, resulting in the architecture
views mentioned.

IEC
Key
1 domain
2 two-way communication link, interface for data/information and/or physical interface
Figure 1 – UWASN system conceptual model
The conceptual model describes the UWASN system in terms of the key domains which are
common to the deployed UWASN systems. These domains are identified and defined.
a) Application domain
The application domain includes many types of application users connected to a UWASN
system. These are scientific, military, business and aquatic applications. The application
users make use of underwater sensor data for monitoring the environment, providing
tsunami warnings, etc.
b) Network domain
The network domain can be realized using LAN, WAN and/or backbone networks. This
domain provides data/information links between the application domain and UWASN
domain. This domain uses RF communication, satellite or optical communication.

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ISO/IEC 30140-2:2017 © ISO/IEC 2017 – 11 –
c) UWASN domain
This domain is related to the underwater environment, which includes surface domain,
sensing domain, and controlling domain. These three domains are described below.
1) Surface domain
In the UWASN system, ships, surface buoys and UUVs may be used as underwater
gateways. These gateways gather data from underwater sensor nodes using acoustic
communication links and transfer to the backbone network using, e.g. satellite
communication or CDMA.
2) Sensing domain
In the UWASN system, the sensing domain is used for sensing the underwater
environment using various types of sensors, e.g. temperature, pressure and imaging
sensors. The sensing domain can directly communicate with the surface domain in the
case of ad-hoc networks.
3) Controlling domain
In the UWASN system, the controlling domain is used for communication between the
sensing domain and the surface domain. Intermediate nodes, such as AUVs and relay
nodes, are used to gather data from the sensing domain and transform to surface
domain with the help of acoustic communication.
7 Configuration of UWASN RA – Systems reference architecture (SRA)
7.1 General
The UWASN systems reference architecture is shown in Figure 2, along with all the entities
involved and the interfaces among them. The entity and interface descriptions are presented
in Table 1.

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IEC
Key
1 domain
2 two-way communication link, interface for data/information and/or physical interface
3 entity
Figure 2 – UWASN systems reference architecture
Table 1 – UWASN systems reference architecture
UWASN domains Domain entities
Network domain Backbone
Internet
Intranet

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ISO/IEC 30140-2:2017 © ISO/IEC 2017 – 13 –
Application domain Scientific
Business
Military
Aquatic
Civilian
Others (e.g. Sports)
Underwater domain Surface domain
– Ships
– Buoys
– USV (unmanned surface vehicle)
– Others [e.g. anti-submarine warfare (ASW) helicopters]
Sensing domain
– UUV
– Other sensing systems
Controlling domain
– Relay node
– UUV
Interfaces (between entities) Description
Application domain Network domain Inf-01: The interface between application domain
and network domain.
Network domain Underwater domain Inf-02: The interface between network domain and
underwater domain.
Underwater domain Application domain Inf-03: The interface between underwater domain
and application domain.

7.2 System-level physical entities
7.2.1 Overview
The purpose of this subclause is to provide not only basic information but also high-le
...

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