Candidate:
Yekta
Demirci
Title:
WRR
based
Two-level
Slice
Scheduler
for
5G
RAN
Sharing
in
the
context
of
Neutral
Host
Date:
January
11,
2022
Time:
11:00
Place:
online
Supervisor(s):
Tripunitara,
Mahesh
-
Rosenberg,
Catherine
Abstract:
We
investigated
the
sub-channel
sharing
problem
in
the
context
of
Neutral
Host
RAN
slicing.
We
considered
a
single
user
Multiple
Input
Multiple
Output
system
where
each
VNO
brings
their
own
sub-channels
and
they
use
the
RAN
infrastructure
in
a
common
way.
We
assume
that
the
power
budget
is
constant
per
PRB.
We
consider
only
the
Downlink
and
a
system
made
of
one
single
cell.
We
assume,
the
RAN
infrastructure
is
operated
by
the
Neutral
Host.
First,
we
considered
the
State
of
The
Art
(SOA),
static
sub-channel
allocation
where
the
VNOs
are
allocated
only
the
sub-channels
they
brought.
In
the
case
of
SOA,
if
a
VNO
experiences
no
traffic
then
the
sub-channels
will
remain
idle
and
the
resources
would
be
wasted.
Considering
that
we
proposed
a
two-level-slice
scheduler
to
utilize
the
idle
resources
better
than
the
SOA.
We
implemented
the
proposed
scheduler
in
an
open
source
RAN
platform,
Open-Air-Interface
(OAI).
We
provided
detailed
set-up
guides
for
the
OAI
platform
in
emulation
and
with
COTS
hardware.
Finally
we
compared
the
performance
of
the
SOA
and
the
proposed
scheduler
in
terms
of
system
throughput
in
four
different
scenarios.
The
proposed
two-level-slice
scheduler
provides
better
system
throughput
than
the
SOA.