Change in osmo-pcu[master]: encoding: Fixes TMSI vs MI bit selection in repeated page info

Daniel Willmann gerrit-no-reply at lists.osmocom.org
Tue Mar 5 17:51:47 UTC 2019


Daniel Willmann has uploaded this change for review. ( https://gerrit.osmocom.org/13133


Change subject: encoding: Fixes TMSI vs MI bit selection in repeated page info
......................................................................

encoding: Fixes TMSI vs MI bit selection in repeated page info

Change-Id: Iddb00b9133f523f4ba09c8f1fc5694e62dc46fbf
---
M src/encoding.cpp
1 file changed, 15 insertions(+), 1 deletion(-)



  git pull ssh://gerrit.osmocom.org:29418/osmo-pcu refs/changes/33/13133/1

diff --git a/src/encoding.cpp b/src/encoding.cpp
index 4c8cdb0..019de52 100644
--- a/src/encoding.cpp
+++ b/src/encoding.cpp
@@ -1066,6 +1066,20 @@
 	return wp;
 }
 
+/* 3GPP TS 44.060 § 11.2.10:
+   < Repeated Page info struct > ::=
+   { 0  -- Page request for TBF establishment
+    { 0 < PTMSI : bit (32) >
+    | 1 < Length of Mobile Identity contents : bit (4) >
+        < Mobile Identity : octet (val (Length of Mobile Identity contents)) > }
+   | 1  -- Page request for RR conn. establishment
+    { 0 < TMSI : bit (32) >
+    | 1 < Length of Mobile Identity contents : bit (4) >
+        < Mobile Identity : octet (val (Length of Mobile Identity contents)) > }
+    < CHANNEL_NEEDED : bit (2) >
+    { 0 | 1 < eMLPP_PRIORITY : bit (3) > }
+   }
+ */
 unsigned Encoding::write_repeated_page_info(bitvec * dest, unsigned& wp, uint8_t len,
 	uint8_t *identity, uint8_t chan_needed)
 {
@@ -1078,7 +1092,7 @@
 		identity++;
 		len--;
 	} else {
-		bitvec_write_field(dest, &wp,0x0,1);  // MI
+		bitvec_write_field(dest, &wp,0x1,1);  // MI
 		bitvec_write_field(dest, &wp,len,4);  // MI len
 	}
 	while (len) {

-- 
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Gerrit-Project: osmo-pcu
Gerrit-Branch: master
Gerrit-MessageType: newchange
Gerrit-Change-Id: Iddb00b9133f523f4ba09c8f1fc5694e62dc46fbf
Gerrit-Change-Number: 13133
Gerrit-PatchSet: 1
Gerrit-Owner: Daniel Willmann <dwillmann at sysmocom.de>
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