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BSI PD IEC/TS 62056-8-20:2016

BSI PD IEC/TS 62056-8-20:2016

$142.49

Electricity metering data exchange. The DLMS/COSEM suite – Mesh communication profile for neighbourhood networks

Published By Publication Date Number of Pages
BSI 2016 30
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This part of IEC 62056 specifies a DLMS/COSEM communication profile that can be used in a smart metering system in which the Neighbourhood Networks (NN) are mesh networks.

This profile may be considered as an adaptation and extension of the UDP/IP communication profile specified in IEC 62056-9-7:2013. As in that standard, the PHY and MAC layers are out of the Scope.

This Technical Specification specifies a number of features essential to the efficient operation of a large scale AMI using mesh NNs. These features include:

  • identification of the DLMS/COSEM client and server participating in an application association (AA) with their system title, so that this identification does not change when the IP address of the server changes, see Clause 6;

  • a mechanism to inform the client of the binding between the server’s system title and its current IP address(es), see 5.5.3;

  • the use of the DLMS/COSEM UDP based transport layer, that allows keeping DLMS/COSEM AAs open for long periods, while the device may leave and join the mesh NN and/or its IP address may change, see 7.2.2;

  • DLMS/COSEM application layer and application process level security features that can be used in a mesh environment, see 7.4.2;

  • a mechanism to organize servers to one or more groups based on various conditions, so that the requests can be broadcasted to all devices attached to the mesh network, but only those servers belonging to the group carry out the request and respond, see 8.2;

  • a mechanism that allows to send the response to a request in designated time windows and with a randomized delay, see 8.3.

  • the use of a specific UDP port that allows efficient UDP header compression, see 6.3.3.

The Scope of this communication profile specification is restricted to aspects concerning the use of communication protocols in conjunction with the COSEM data model and the DLMS/COSEM application layer. Any project specific definitions of data structures and data contents may be provided in project specific companion specifications.

PDF Catalog

PDF Pages PDF Title
4 CONTENTS
6 FOREWORD
8 INTRODUCTION
9 1 Scope
2 Normative references
10 3 Terms, definitions and abbreviated terms
3.1 Terms and definitions
11 3.2 Abbreviated terms
12 4 Targeted communication environments – Overview
Figures
Figure 1 – Mesh neighbourhood network within an AMI environment
14 5 Use of the communication layers for this profile
5.1 Information related to the use of the specification specifying the lower layers
5.2 The structure of the profile supporting network meshed communications
Figure 2 – Entities and interfaces of a smart metering system
15 5.3 Lower protocol layers and their use
5.3.1 Overview
5.3.2 Physical layer
5.3.3 MAC layer
5.3.4 Service mapping and adaptation layers
Figure 3 – The DLMS/COSEM mesh communication profile
16 5.3.5 Network layer
5.3.6 Transport layer
5.4 Service mapping and adaptation layers
5.4.1 Service mapping
5.4.2 Protocol_Connection_Parameters of the COSEM-OPEN service
5.5 Registration and connection management
5.5.1 Overview
5.5.2 Connectivity management
17 5.5.3 Registration
18 Tables
Table 1 – Send_destination_and_method attribute
Table 2 – Address registration data
Table 3 – Address update data
19 6 Identification and addressing scheme
6.1 Overview
20 6.2 Network addressing
6.2.1 General
Figure 4 – Identification and addressing scheme
21 6.2.2 Node migration
6.3 Transport addressing
6.3.1 Overview
6.3.2 UDP port
6.3.3 Default UDP ports
6.4 Wrapper addressing
Table 4 – Client and server SAPs
22 7 Specific considerations for the application layer services
7.1 Overview
7.2 Application association establishment and release: ACSE services
7.2.1 Application associations
7.2.2 Application association life time
7.2.3 COSEM-OPEN and COSEM-RELEASE service parameters
23 7.3 xDLMS services
7.4 Security mechanisms
7.4.1 General
7.4.2 Broadcast
7.4.3 Lower layers security
24 7.5 Transferring long application messages
7.6 Media access, bandwidth and timing considerations
7.7 Other considerations
8 Communication configuration and management
8.1 Overview
8.2 Group management
8.3 Delayed and randomized response
25 9 The COSEM application process
10 Additional considerations for the use of this profile
26 Annex A (informative) Address management process example
A.1 Registration management
A.2 IP address publication
A.2.1 General
27 A.2.2 Address lookup
Figure A.1 – Registration management process

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BSI PD IEC/TS 62056-8-20:2016
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