Specialist Task Force 332: Plugtests &
Protocol Modelling to verify Coexistence Mechanism
for PLT Modems and coexistence between PLT Modems and
fixed Short Wave Radio broadcasting services
Who we are:
Team Leader: Andreas Schwager
Team Members: Michael Hate
Holger Hirsch
Roger Pfister
What we do :
ETSI Technical Committee Power-Line Telecommunications (TC
PLT) is developing standards for networks, their elements and interfaces for
digital communication on electrical wires.
TC PLT will progress the necessary ETSI deliverables to
cover the provision of multimedia and/or voice and/or data communications over
power lines.
The current market is fragmented with proprietary systems
that may produce interoperability and mutual co-existence problems for new as
well as existing PLT devices.
Draft TS of Work Item 20 (WI20) deals with coexistence of
a PLT system with other PLT systems and draft TS of Work Item 21 (WI21) deals
with coexistence with short wave radio services including DRM (Digital Radio
Mondiale). These two standards will be developed in sufficient detail to allow
coexistence between equipment from different vendors and applications.
PlugtestsTM are essential to achieve a common
understanding of coexistence issues that affect Powerline telecommunications at
MAC & PHY level. Protocol modelling and simulation will ensure the efficacy of
the TS and will assist PLT system engineers to produce implementations that will
achieve compliance with the TS and give a higher probability of success when
different systems are tested together at the PlugtestsTM. For the realisation of
a PlugtestsTM of WI20, at least two different implementations using the draft TS
will be needed. With this condition, the coexistence mechanism between PLT
modems can be identified as feasible to be implemented and adopted by different
vendors.
To resolve this issue and agree upon a common
understanding of factors that affect coexistence of Powerline Telecommunications
at MAC & PHY level a Protocol Model and Simulation is necessary in order to
highlight any particular areas of implementation difficulty or performance prior
to the costly and time consuming effort of implementation and to ensure that PLC
technology providers bring to the PlugtestsTM implementations that are capable
of meeting the TS. Furthermore PlugtestsTM are required to verify the draft TS
of Work Items 20 and 21.
During the coexistence PlugtestsTM, different PLT modems
from different vendors implementing draft TS related to WI20 and/or draft TS
related to WI21 will be evaluated. The comparison of the behaviour of the PLT
modems and the evaluation of the mechanism implemented based on the drafts TS
will be done by an independent expert. Independence is essential in order to
ensure neutrality in the realisation of the tests and the evaluation of the
results.
The STF will verify the performance of the coexistence
implementations and will make recommendations for possible improvement of
today’s draft TS of Work Item 20 (WI20) and 21(WI21).
The STF is expected to
finish the work with draft reports, one for each Work Item, ready for TC
approval.
Read our
Terms
of Reference
Why we do it:
This proposed STF is
needed for a twofold purpose:
- To develop a
PLT coexistence PHY and MAC Protocol Model and Simulation based on the work
in WI20. This Protocol Model and Simulation will be used to verify the
results of a PlugtestsTM event that will provide essential
feedback to WI20.
- And to realise a PlugtestsTM event (maybe
coinciding with the previous) to provide essential feedback to WI21 of ETSI
PLT. During the development of WI21 draft specification 9 members commented
using the TB decision support tool that this PlugtestsTM is
required to verify it.
Time plan for the work:
The STF will produce the following deliverables, for TC PLT
approval:
DTR/PLT-00022 (approved by PLT#42
PLT#42TD17r1, for WI20)
Title: Modelling and Simulation of the Coexistence Protocol between PLT modem systems
Scope: Results and verification of the Modelling and Simulation of
coexistence between PLT modem system.
DTR/PLT-00023 (approved by PLT#42
PLT#42TD15r1, for WI20)
Title: Report from PlugtestsTM 2007 on coexistence between PLT modem
systems
Scope: Results of the verification of the proposed mechanism to improve
coexistence between PLT modem systems.
DTR/PLT-00024 (approved by PLT#42
PLT#42TD16r1, for WI21)
Title: Report from PlugtestsTM 2007 on coexistence between PLT and
short wave radio broadcast
Scope: Results of the verification of the proposed mechanism to improve
coexistence between PLT and short wave radio broadcast.
The STF will produce the deliverables according to the
following time scale:
- Start of the work
15 Aug 2007
- ToC, scope and first draft (PLT#44)
15 Nov 2007
- Final draft for TB approval
15 Jan 2008
- TB approval (PLT#45)
31 Jan 2008
How to contact us:
If you would like more information, please contact the STF Leader, Andreas
Schwager schwager@sony.de
Note: this information is based upon STF working assumptions.
The views expressed do not necessarily represent the position of ETSI in this
context.
Last updated: 2013-04-13 17:30:56