initial timing advance bandwidth scaling

git-svn-id: http://svn.eurecom.fr/openair4G/trunk@7595 818b1a75-f10b-46b9-bf7c-635c3b92a50f
2015-06-18 14:41:38 +00:00
parent 7eb9dacd1f
commit 51ce70c826
1 changed files with 23 additions and 1 deletions
@@ -3124,11 +3124,33 @@ void prach_procedures(PHY_VARS_eNB *phy_vars_eNB,uint8_t sched_subframe,uint8_t
            preamble_energy_max%10,
            preamble_delay_list[preamble_max]);
 #ifdef OPENAIR2
+        uint8_t update_TA=4;
+
+        switch (phy_vars_eNB->lte_frame_parms.N_RB_DL) {
+        case 6:
+          update_TA = 16;
+          break;
+
+        case 25:
+          update_TA = 4;
+          break;
+
+        case 50:
+          update_TA = 2;
+          break;
+
+        case 100:
+          update_TA = 1;
+          break;
+        }
+
+
+
      mac_xface->initiate_ra_proc(phy_vars_eNB->Mod_id,
                                  phy_vars_eNB->CC_id,
                                  frame,
                                  preamble_max,
-                                  preamble_delay_list[preamble_max],
+                                  preamble_delay_list[preamble_max]*update_TA,
 				  0,subframe,0);
      
 #endif