--- /dev/null
+/******************************************************************************
+*
+* Copyright (c) 2019 Intel.
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+* http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+*******************************************************************************/
+
+
+/**
+ * @brief This file provides interface to Timing for XRAN.
+ *
+ * @file xran_timer.h
+ * @ingroup group_lte_source_xran
+ * @author Intel Corporation
+ *
+ **/
+
+#ifndef _XRAN_TIMER_H
+#define _XRAN_TIMER_H
+#include <time.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+
+#define MSEC_PER_SEC 1000L
+
+#define XranIncrementSymIdx(sym_idx, numSymPerMs) (((uint32_t)sym_idx >= (((uint32_t)numSymPerMs * MSEC_PER_SEC) - 1)) ? 0 : (uint32_t)sym_idx+1)
+#define XranDecrementSymIdx(sym_idx, numSymPerMs) (((uint32_t)sym_idx == 0) ? (((uint32_t)numSymPerMs * MSEC_PER_SEC)) - 1) : (uint32_t)sym_idx-1)
+
+long poll_next_tick(long interval_ns);
+long sleep_next_tick(long interval);
+int timing_set_debug_stop(int value);
+int timing_get_debug_stop(void);
+inline uint64_t timing_get_current_second(void);
+
+#endif