<p>fixeria has uploaded this change for <strong>review</strong>.</p><p><a href="https://gerrit.osmocom.org/c/osmo-bts/+/15658">View Change</a></p><pre style="font-family: monospace,monospace; white-space: pre-wrap;">common/l1sap: increase ToA precision for packet Access Bursts<br><br>QTA is a Timing Advance value in units of 1/4 of a symbol. Let's<br>use ToA256 (1/256 of a symbol) field of L1SAP RACH.ind as a base<br>for QTA calculation in order to achieve better precision.<br><br>Change-Id: I6e6fa7985c430a9bdbd12af2a8b2a5a66f11a41c<br>---<br>M src/common/l1sap.c<br>1 file changed, 2 insertions(+), 1 deletion(-)<br><br></pre><pre style="font-family: monospace,monospace; white-space: pre-wrap;">git pull ssh://gerrit.osmocom.org:29418/osmo-bts refs/changes/58/15658/1</pre><pre style="font-family: monospace,monospace; white-space: pre-wrap;"><span>diff --git a/src/common/l1sap.c b/src/common/l1sap.c</span><br><span>index 0409e2e..c6dfee2 100644</span><br><span>--- a/src/common/l1sap.c</span><br><span>+++ b/src/common/l1sap.c</span><br><span>@@ -1358,7 +1358,8 @@</span><br><span>                LOGPFN(DL1P, LOGL_INFO, rach_ind->fn, "RACH for packet access (toa=%d, ra=%d)\n",</span><br><span>                       rach_ind->acc_delay, rach_ind->ra);</span><br><span> </span><br><span style="color: hsl(0, 100%, 40%);">-           pcu_tx_rach_ind(bts, rach_ind->acc_delay << 2,</span><br><span style="color: hsl(120, 100%, 40%);">+               /* QTA: Timing Advance in units of 1/4 of a symbol */</span><br><span style="color: hsl(120, 100%, 40%);">+         pcu_tx_rach_ind(bts, rach_ind->acc_delay_256bits >> 6,</span><br><span>                      rach_ind->ra, rach_ind->fn, rach_ind->is_11bit,</span><br><span>                     rach_ind->burst_type, PCU_IF_SAPI_RACH);</span><br><span>          return 0;</span><br><span></span><br></pre><p>To view, visit <a href="https://gerrit.osmocom.org/c/osmo-bts/+/15658">change 15658</a>. To unsubscribe, or for help writing mail filters, visit <a href="https://gerrit.osmocom.org/settings">settings</a>.</p><div itemscope itemtype="http://schema.org/EmailMessage"><div itemscope itemprop="action" itemtype="http://schema.org/ViewAction"><link itemprop="url" href="https://gerrit.osmocom.org/c/osmo-bts/+/15658"/><meta itemprop="name" content="View Change"/></div></div>

<div style="display:none"> Gerrit-Project: osmo-bts </div>
<div style="display:none"> Gerrit-Branch: master </div>
<div style="display:none"> Gerrit-Change-Id: I6e6fa7985c430a9bdbd12af2a8b2a5a66f11a41c </div>
<div style="display:none"> Gerrit-Change-Number: 15658 </div>
<div style="display:none"> Gerrit-PatchSet: 1 </div>
<div style="display:none"> Gerrit-Owner: fixeria <axilirator@gmail.com> </div>
<div style="display:none"> Gerrit-MessageType: newchange </div>