openbsc[master]: Modify SI 13 field to support 11 bit RACH

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bhargava_abhyankar gerrit-no-reply at lists.osmocom.org
Mon Jul 18 15:28:56 UTC 2016


Patch Set 3:

In section 12.24 its defined as The ACCESS_BURST_TYPE field indicates if the 8 or 11 bit format shall be used in the PACKET CHANNEL REQUEST message, the PS HANDOVER ACCESS message, the PTCCH uplink block (3GPP TS 44.004) and in the PACKET CONTROL ACKNOWLEDGMENT message when the format is four access bursts. 

1.For 11 bit RACH the message is EGPRS Packet channel Request.
2.The ACCESS_BURST_TYPE is coded as above when when the format is four access bursts, but in SIB 13 we do not have four access burst as default format. To have four access burst format CONTROL_ACK_TYPE parameter should be zero, but we have set it to RLC/MAC control block i.e bit is set to 1.

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Gerrit-MessageType: comment
Gerrit-Change-Id: I51357bec936c28a26ab9ff5d59e0e30ca3363297
Gerrit-PatchSet: 3
Gerrit-Project: openbsc
Gerrit-Branch: master
Gerrit-Owner: bhargava_abhyankar <Bhargava.Abhyankar at radisys.com>
Gerrit-Reviewer: Harald Welte <laforge at gnumonks.org>
Gerrit-Reviewer: Holger Freyther <holger at freyther.de>
Gerrit-Reviewer: Jenkins Builder
Gerrit-Reviewer: Max <msuraev at sysmocom.de>
Gerrit-Reviewer: Neels Hofmeyr <nhofmeyr at sysmocom.de>
Gerrit-Reviewer: bhargava_abhyankar <Bhargava.Abhyankar at radisys.com>
Gerrit-HasComments: No



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