Change in osmo-gsm-manuals[master]: TRXD: rework description of the NOPE / IDLE frame indication

fixeria gerrit-no-reply at lists.osmocom.org
Wed Apr 14 02:08:34 UTC 2021


fixeria has uploaded this change for review. ( https://gerrit.osmocom.org/c/osmo-gsm-manuals/+/23744 )


Change subject: TRXD: rework description of the NOPE / IDLE frame indication
......................................................................

TRXD: rework description of the NOPE / IDLE frame indication

 * Add 'referred to as NOPE.ind', this is how we usueally call it;
 * Change 'IDLE / NOPE' to 'NOPE / IDLE', because:
 ** there can be 'IDLE TDMA frame', but not 'NOPE frame';
 * Avoid using 'high' and 'low' terms for bit values.
 * Introduce and use macros for '0'B and '1'B.

Change-Id: I72e0c785efb8a89b664486740ef312e77b81c01a
Related: SYS#4895, OS#4941, OS#4006
---
M common/chapters/trx_if.adoc
1 file changed, 11 insertions(+), 6 deletions(-)



  git pull ssh://gerrit.osmocom.org:29418/osmo-gsm-manuals refs/changes/44/23744/1

diff --git a/common/chapters/trx_if.adoc b/common/chapters/trx_if.adoc
index a3a78ab..04da347 100644
--- a/common/chapters/trx_if.adoc
+++ b/common/chapters/trx_if.adoc
@@ -1,3 +1,7 @@
+// Common attributes (macros) used in this document
+:bit-zero: '0\'B
+:bit-one: '1\'B
+
 [[trx_if]]
 == TRX Manager UDP socket interface
 
@@ -504,7 +508,7 @@
 +-----------------+---------------------------------------+
 | 7 6 5 4 3 2 1 0 | bit numbers (value range)             |
 +-----------------+---------------------------------------+
-| X . . . . . . . | IDLE / nope frame indication (0 or 1) |
+| X . . . . . . . | NOPE / IDLE frame indication (0 or 1) |
 +-----------------+---------------------------------------+
 | . X X X X . . . | Modulation, TS set number (see below) |
 +-----------------+---------------------------------------+
@@ -512,11 +516,12 @@
 +-----------------+---------------------------------------+
 ----
 
-IDLE / nope frame indication::
-The bit number 7 (MSB) is set to high when either nothing has been detected, so
-the BTS scheduler keeps processing bursts without gaps, or during IDLE frames,
-so the current noise levels can be delivered.  Other bits are ignored, and should
-be set to low (`0`) in this case.  The field "Soft-bits" is omited.
+NOPE / IDLE frame indication (referred to as NOPE.ind)::
+The bit number 7 (MSB) shall be set to {bit-one} by the transceiver when either
+nothing has been detected, so the BTS scheduler keeps processing bursts without
+gaps, or during IDLE frames, so the current noise levels can be delivered.  In
+this case the remaining bits become meaningless and shall be set to {bit-zero}.
+The payload (`Soft-bits` or `Hard-bits`) is omited.
 
 Modulation and TS set number::
 GMSK has 4 sets of training sequences (see tables 5.2.3a-d), while 8-PSK (see

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Gerrit-Project: osmo-gsm-manuals
Gerrit-Branch: master
Gerrit-Change-Id: I72e0c785efb8a89b664486740ef312e77b81c01a
Gerrit-Change-Number: 23744
Gerrit-PatchSet: 1
Gerrit-Owner: fixeria <vyanitskiy at sysmocom.de>
Gerrit-MessageType: newchange
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