Volker Jungnickel (Fraunhofer HHI), Chair
Charlie Petterson (Ericsson), Vice-chair
TBD (), Editor
Tuncer Baykas, Recording Secretary
The Unified Channel Model
(UCM) is a newly established Topic Interest Group (TIG) within the IEEE 802.11
Working Group. Its objective is to enable realistic simulation of
next-generation WLAN stations (STAs) operating in millimeter-wave or optical
wireless communication bands alongside simultaneous transmissions in
traditional sub-7 GHz bands (2.4, 5, and 6 GHz). The key challenge is the
development of channel models that are spatially consistent across all these
frequency bands, meaning they are derived from a common three-dimensional
environment with identical objects placed at the same locations.
Relevant documents
presented in 802.11 WNG and in the working group that led to the creation of
the UCM TIG:
https://mentor.ieee.org/802.11/dcn/25/11-25-1067-02-0wng-unified-channel-model-for-802-11.pptx
https://mentor.ieee.org/802.11/dcn/25/11-25-1387-00-0000-proposed-tig-on-unified-channel-model.pptx
The charter
of the IEEE 802.11 Unified Channel Model Topic Interest Group (UCM TIG) is to
•
discuss
use cases and requirements,
•
develop
a Unified Channel Model (UCM) and
•
enable
performance comparison of proposals for multilink operation (MLO) across sub‑7 GHz
/ mm-wave / optical bands.
The goals of the UCM TIG are
to
•
deliver
a channel model that is spatially consistent across sub-7 GHz / mm-wave /
optical bands,
•
builds
on already available and verified models,
•
can
be implemented using open software, and
•
is
well documented.
The final report will give
advice to the IEEE 802.11 working group how far these
goals are achievable already today and in what way they could be achieved
ultimately.
Main documents
· November Agenda: https://mentor.ieee.org/802.11/dcn/25/11-25-1753-04-0ucm-ucm-tig-agenda-for-november-plenary.pptx
· November Presentations:
o
Towards
a modern C++ framework for the IEEE indoor channel models, Stephan Jaeckel, 11-25/2118r0
o
MIMO
Transmissions in Correlated Channel Model, Yanchun Li 11-25/2109r0
o
Multi-Frequency
and Multi-Scenario Channel Measurement and Modeling Jianhua Zhang 11-25/2113r0
o
Overview
of Indoor Multi-Band Broadband Measurements: From Microwave to Millimeter-Wave
Frequencies, Robert Mueller, 11-25/2117r2
o
Discussion
on the Unified Channel Model, Charlie Petterson, 11-25/2142r1
o
Proposed
UCM TIG Technical Report Draft, 11-25/2169r1
· November minutes: https://mentor.ieee.org/802.11/dcn/25/11-25-2138-01-0ucm-ucm-tig-november-2025-meeting-minutes.docx
· Closing report: https://mentor.ieee.org/802.11/dcn/25/11-25-2185-00-0ucm-ucm-tig-closing-report-for-november.pptx
Achievements
The main achievements of
this meeting were:
·
A proposal to re-implement the existing 802.11
channel models as an open software, which should becomes
available via https://github.com/stjaeckel/quadriga-lib
as part of the open quadriga-lib (see http://quadriga-lib.org/index.html)
·
A first overview of available multi-band
measurement results was given and discussed 11-25/2117r2. The
group understood it is impossible to do any new measurement
in the timeframe of the UCM TIG. Leverage existing results, as much as available.
·
First contributions on measurements from
international experts (Prof. Jianhua Zhang’s group from Bejing
University of Posts and Telecommunications) was given 11-25/2113r0.
Discussion was limited due to bad Internet connection.
·
A proposal to reuse the existing modeling
framework from 3GPP was made 11-25/2142r1 and
to add the missing indorr scenarios which are typical
for 802.11 technology. Reactions were positive in general. More information has
been requested.
January 2026 plans
Main documents
·
September Agenda: https://mentor.ieee.org/802.11/dcn/25/11-25-1601-03-0ucm-agenda-for-ucm-tig-september-2025.pptx
· September Contributions:
Achievements
The main achievements of
this meeting were:
·
The
UCM TIG approved the Chair (Volker Jungnickel), the Vice Chair (Charlie
Petterson) and the Secretary (Tuncer Baykas).
·
The group reviewed feedback obtained from
802.11 members contained on slides 20-24 in doc. 11-25/1601r3
concerning the scope and goals of the UCM TIG.
·
The group approved a first timeline on slide 27
in doc. 11-25/1601r3.
·
A first contribution 11-25/1627r0
on a spatially consistent channel model applicable to multiple frequency bands could
be presented. Discussion was postponed to the first telco.
·
It was agreed to handle further contributions during
the teleconferences.
November 2025 plans
Following a presentation in doc. 11-25/1067r2
and discussion during the WNG meeting in July 2025, and a short notice contained
in doc. 11-25/1387r0
at the midweek plenary, the IEEE 802.11 working group approved the formation of
the UCM TIG during its closing plenary by unanimous consent.
USEFUL LINKS TO OTHER SITES:
IEEE P802.11 WLANs RELATED
OTHER SITES
This page is maintained by volker.jungnickel@hhi.fraunhofer.de.
Comments are welcome.