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http://cgit.osmocom.org/osmo-bts/commit/?id=339b9329ff7be01d03c3a55301e1ef1…
commit 339b9329ff7be01d03c3a55301e1ef1a2ea57953
Author: Philipp Maier <pmaier(a)sysmocom.de>
Date: Thu Mar 9 16:07:45 2017 +0100
l1sap: fix rach reason (ra) parsing
The ra parameter indicates the reason for the received rach
request. osmo-bts uses the ra parameter to determine if the
received rach request is packet access related. If yes,
osmo-bts will forward the request to the PCU.
In order to determine if the ra is packet related or not,
the higher 4 bits must be equel to 0x7 and at least one of
the lower 4 bits must be zero.
The current method lacks checking of the lower 4 bits. It
would also accept 0b01111111, which is reserved for future
use. This commit extends the check to take also the last
4 bits into accound.
See also: 3GPP TS 04.08, Table 9.9
Change-Id: I5eb88c42a91e158d9bfa4105ec9636035baf8959
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Summary of changes:
include/osmo-bts/l1sap.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
hooks/post-receive
--
Osmocom BTS-side code (Abis, scheduling, ...)