5 Jun
2015
5 Jun
'15
5:17 p.m.
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- Log -----------------------------------------------------------------
http://cgit.osmocom.org/osmo-pcu/commit/?id=d3350c8cd2aa6a32a65fd0ea1691db1…
commit d3350c8cd2aa6a32a65fd0ea1691db16e662592e
Author: Jacob Erlbeck <jerlbeck(a)sysmocom.de>
Date: Fri Jun 5 16:33:33 2015 +0200
vty: Add command to show detailed MS info
This commit extends the "show ms" command to display an extended set
of information for a single MS.
The following VTY commands are added:
- show ms tlli TLLI
- show ms imsi IMSI
Sponsored-by: On-Waves ehf
http://cgit.osmocom.org/osmo-pcu/commit/?id=5bf5b0da30700bb881295794ad6ea1e…
commit 5bf5b0da30700bb881295794ad6ea1edf0d854d3
Author: Jacob Erlbeck <jerlbeck(a)sysmocom.de>
Date: Thu Jun 4 19:04:30 2015 +0200
ms: Add support for maximum CS values
Currently the CS values can be increased to CS4 even when the "cs"
configuration command has been used with a lower value. The "cs"
command just sets the initial coding scheme, so other means are
needed to limit the selection. One approach is to use the CS flags
passed in SI, but these are currently ignored.
To make it possible to limit the CS selection by configuring the PCU,
this commit adds the following VTY commands to config-pcu:
- cs max <1-4> Limit DL and UL CS to the given value
- cs max <1-4> <1-4> Limit DL and UL CS separately (DL first)
- no cs max Don't limit
Ticket: #1674
Sponsored-by: On-Waves ehf
http://cgit.osmocom.org/osmo-pcu/commit/?id=a92f9825845313cee04ee805a6abf1b…
commit a92f9825845313cee04ee805a6abf1bd30a4ae47
Author: Jacob Erlbeck <jerlbeck(a)sysmocom.de>
Date: Thu Jun 4 17:46:33 2015 +0200
ms: Add blocking period for CS upgrade
Currently the CS level is immediately increased if the error rate
drops below the lower threshold. Since the measurement values are not
damped, this behaviour leads to a quick return to higher CS values
even under bad radio conditions. Since with GPRS RLC/MAC blocks
cannot be resent with another coding scheme, increasing the CS value
should be done carefully.
This commit adds a blocking period that only allows higher CS values
if all error rate measurements were below the LOW threshold for a
certain amount of time (currently fixed to 1s).
Ticket: #1674
Sponsored-by: On-Waves ehf
http://cgit.osmocom.org/osmo-pcu/commit/?id=693d4f787d70dba6b2ce4becdfd219c…
commit 693d4f787d70dba6b2ce4becdfd219c2cacd6a06
Author: Jacob Erlbeck <jerlbeck(a)sysmocom.de>
Date: Thu Jun 4 16:51:44 2015 +0200
tbf: Ignore lost+recv == 1
Currently the CS level gets changed quickly if single RLC/MAC blocks
are sent (e.g. LLC dummy commands), since the rate is either 0% or
100%.
This commit ignores measurements which are based on a single block
only.
Sponsored-by: On-Waves ehf
http://cgit.osmocom.org/osmo-pcu/commit/?id=504d1e34c061e236a377fb4040d70bf…
commit 504d1e34c061e236a377fb4040d70bf6a00d1416
Author: Jacob Erlbeck <jerlbeck(a)sysmocom.de>
Date: Thu Jun 4 15:12:10 2015 +0200
tbf: Add adaptive coding scheme configuration
This commit adds the following VTY commands to config-pcu:
- cs threshold <0-100> <0-100> Enables adaptive CS selection
- no cs threshold Disables it
The "cs threshold LOW HIGH" command sets the water marks
(cs_adj_lower_limit and cs_adj_upper_limit) used to
decide about switching coding schemes.
Ticket: #1739
Sponsored-by: On-Waves ehf
http://cgit.osmocom.org/osmo-pcu/commit/?id=c93d457de7ca952b46b97dcad686a38…
commit c93d457de7ca952b46b97dcad686a3880a5c2be0
Author: Jacob Erlbeck <jerlbeck(a)sysmocom.de>
Date: Thu Jun 4 16:52:23 2015 +0200
tbf: Add debugging output to analyse_errors()
To help with the debugging, optimisation, and understanding of this
method, this commit adds an info string containing a flag character per
RLC/MAC data block in the current window.
Note that the blocks are shown in reversed order (highest BSN first)
in comparison to other logging output.
Sponsored-by: On-Waves ehf
http://cgit.osmocom.org/osmo-pcu/commit/?id=53efddb64fdc2c2526313bea005d8ca…
commit 53efddb64fdc2c2526313bea005d8ca6cab73a4d
Author: Jacob Erlbeck <jerlbeck(a)sysmocom.de>
Date: Thu Jun 4 12:12:32 2015 +0200
tbf: Add adaptive DL CS adjustment
To cope with transmission failures due to bad radio conditions, a
different coding scheme with more redundance can be used.
This commit adds an implemenation that is based on the Ack/Nack
ratio per PACKET DOWNLINK ACK/NACK message received from the MS.
Basically the CS level is decreased, if the block error rate goes
above cs_adj_upper_limit (default 33%), and it is increased, if the
rate drops below cs_adj_lower_limit (default 10%). Only blocks that
have been encoded with the current CS are taken into account.
Note that this approach doesn't measure the MS->BTS conditions and
that the measurement values reported by the MS are not taken into
account.
Ticket: #1739
Sponsored-by: On-Waves ehf
http://cgit.osmocom.org/osmo-pcu/commit/?id=87e9169fc5c576e4815a18d57831a07…
commit 87e9169fc5c576e4815a18d57831a0773cfc22dc
Author: Jacob Erlbeck <jerlbeck(a)sysmocom.de>
Date: Thu Jun 4 10:23:24 2015 +0200
vty: Add 'show ms all' command
This command lists the entries of the ms_store by a line per MS.
Beside TLLI and IMSI, some measurement and state information is
shown.
A ms_list() getter method is added to GprsMsStorage to obtain a list
of the MsGprs objects.
The following VTY command is added to the 'enable' node:
- show ms all
Sponsored-by: On-Waves ehf
http://cgit.osmocom.org/osmo-pcu/commit/?id=092f3c60b5e5cadbc044ede4617d074…
commit 092f3c60b5e5cadbc044ede4617d074208649c3d
Author: Jacob Erlbeck <jerlbeck(a)sysmocom.de>
Date: Thu Jun 4 09:42:14 2015 +0200
vty: Add a file for C++ functions
Currently the pcu_vty.c doesn't compile with C++. Thus C++ object
cannot be access directly there.
This commit adds a helper C++ file that exports all functions with C
calling conventions and naming to work around that limitation until
the transition of pcu_vty.c is completed.
Sponsored-by: On-Waves ehf
http://cgit.osmocom.org/osmo-pcu/commit/?id=3b343d0cb1734ba42befc6b44d590be…
commit 3b343d0cb1734ba42befc6b44d590be1ee86cb96
Author: Jacob Erlbeck <jerlbeck(a)sysmocom.de>
Date: Tue Jun 2 16:00:41 2015 +0200
tbf: Move the current CS field to GprsMs
Currently the current CS value is stored in the cs field of
gprs_rlcmac_tbf and initialised when it is used the first time.
This commit adds separate fields for UL and DL CS values to the
GprsMs class and provides corresponding getter methods for GprsMs and
gprs_rlcmac_tbf.
Ticket: #1739
Sponsored-by: On-Waves ehf
http://cgit.osmocom.org/osmo-pcu/commit/?id=b6ab897d0e1e7c43b1a15118d7508b0…
commit b6ab897d0e1e7c43b1a15118d7508b03e7f4d18c
Author: Jacob Erlbeck <jerlbeck(a)sysmocom.de>
Date: Tue Jun 2 14:06:12 2015 +0200
ms: Add back pointer to BTS
Since more functionality will be moved to the GprsMs class, a pointer
to the current BTS object is added to allow access to configuration
data and other methods.
Sponsored-by: On-Waves ehf
http://cgit.osmocom.org/osmo-pcu/commit/?id=a29c640f28d9f1a065671b91d1ab1ff…
commit a29c640f28d9f1a065671b91d1ab1ff320b73e71
Author: Jacob Erlbeck <jerlbeck(a)sysmocom.de>
Date: Tue Jun 2 12:33:30 2015 +0200
tbf: Store MS class in GprsMs objects
The ms_class value is a property of the MS and thus belongs to the
GprsMs class. Nevertheless the MS object is created after the TLLI
gets known, so the value still has to be stored in the TBF initially.
This commit add the ms_class value to the GprsMs class and introduces
TBF accessor functions which either access that object or, if that is
not available, the value stored locally.
Ticket: #1674
Sponsored-by: On-Waves ehf
http://cgit.osmocom.org/osmo-pcu/commit/?id=0a21c4016109d81dd45797a576d7c03…
commit 0a21c4016109d81dd45797a576d7c035660273e6
Author: Jacob Erlbeck <jerlbeck(a)sysmocom.de>
Date: Thu May 28 19:07:01 2015 +0200
tbf: Move the LLC queue to GprsMs
Currently the enqueued DL LLC messages which have not yet passed to
RLC/MAC encoding are eventually copied from one TBF to the next one
(see gprs_rlcmac_dl_tbf::reuse_tbf). Since the enqueued LLC messages
are related to a specific MS, they should be stored at that layer.
This commit moves the gprs_llc_queue object to GprsMs and changes the
TBF's accessor methods accordingly. The LLC copying code is removed
from gprs_rlcmac_dl_tbf::reuse_tbf().
Sponsored-by: On-Waves ehf
http://cgit.osmocom.org/osmo-pcu/commit/?id=eb69865cbb9a6190a1adc0cc586e93b…
commit eb69865cbb9a6190a1adc0cc586e93b2fa26437c
Author: Jacob Erlbeck <jerlbeck(a)sysmocom.de>
Date: Tue Jun 2 11:37:22 2015 +0200
tbf: Make the ms() getter method const
Currently this method cannot be used in other const methods.
This commit adds the missing const keyword.
Sponsored-by: On-Waves ehf
http://cgit.osmocom.org/osmo-pcu/commit/?id=bb4e151c3c2e6e3a859c004b3289063…
commit bb4e151c3c2e6e3a859c004b32890637ea95a3d1
Author: Jacob Erlbeck <jerlbeck(a)sysmocom.de>
Date: Tue Jun 2 11:28:07 2015 +0200
llc: Add missing declarations to llc.h
Currently llc.h relies on the structs BTS, timeval, and msgb being
declared before the file is included.
This commit adds forward declaration for these structs, because they
will only be used for pointer types.
Sponsored-by: On-Waves ehf
http://cgit.osmocom.org/osmo-pcu/commit/?id=cd5f42e588805e6bc5b5cf6d4c64cb4…
commit cd5f42e588805e6bc5b5cf6d4c64cb426656c562
Author: Jacob Erlbeck <jerlbeck(a)sysmocom.de>
Date: Fri May 29 10:37:09 2015 +0200
llc: Separate LLC queue handling from gprs_llc
Currently the gprs_llc class handles both LLC queueing and the
partition into smaller pieces for RLC/MAC encapsulation. This hinders
the separation of TBF and MS related data, since LLC queueing belongs
to the MS related code while the RLC/MAC encoding/decoding belongs to
the TBF layer.
This commits takes the LLC queueing related methods and members and
puts them into a new class gprs_llc_queue. It puts the queueing
object into gprs_rlcmac_tbf and adds accessor functions. The
implementation in tbf.cpp and tbf_dl.cpp is adapted accordingly.
Ticket: #1674
Sponsored-by: On-Waves ehf
http://cgit.osmocom.org/osmo-pcu/commit/?id=3c91cb881d6a5126673e88d8421a207…
commit 3c91cb881d6a5126673e88d8421a207efec6a42d
Author: Jacob Erlbeck <jerlbeck(a)sysmocom.de>
Date: Thu Jun 4 10:05:48 2015 +0200
pcu: Set ms_idle_sec to 60s
Since the timing advance storage has been removed, the TA values are
lost, when the last TBF of a single MS is freed. The TA storage has
at least saved the last 30 TA values. So now in more cases a wrong TA
value can be transmitted to an MS. Note that this also could have
happened before the removal of the storage, especially if more than
30 MS were in use.
This commit changes the default value of ms_idle_sec to 60s which is
higher than default value for T3314 (44s, see TS 24.008, 11.2.2),
after which the SGSN will have to start paging anyway. In that case,
a RACH request will be triggered, that will trigger an update of the
TA value in the PCU.
Sponsored-by: On-Waves ehf
-----------------------------------------------------------------------
Summary of changes:
src/gprs_ms.cpp | 3 +--
src/pcu_vty.c | 26 ++++++++++++++++++++++++
src/pcu_vty_functions.cpp | 51 +++++++++++++++++++++++++++++++++++++++++++++++
src/pcu_vty_functions.h | 4 ++++
src/tbf_dl.cpp | 6 ++++--
5 files changed, 86 insertions(+), 4 deletions(-)
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UNNAMED PROJECT