diff --git a/src/alloc_algo.h b/src/alloc_algo.h
new file mode 100644
index 0000000..a7c370e
--- /dev/null
+++ b/src/alloc_algo.h
@@ -0,0 +1,40 @@
+/* alloc_algo.h
+ *
+ * Copyright (C) 2022 by sysmocom - s.m.f.c. GmbH <info@sysmocom.de>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#pragma once
+
+#include <stdbool.h>
+#include <stdint.h>
+
+struct gprs_rlcmac_bts;
+struct gprs_rlcmac_tbf;
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+int alloc_algorithm_a(struct gprs_rlcmac_bts *bts, struct gprs_rlcmac_tbf *tbf, bool single,
+		      int8_t use_trx);
+
+int alloc_algorithm_b(struct gprs_rlcmac_bts *bts, struct gprs_rlcmac_tbf *tbf, bool single,
+		      int8_t use_trx);
+
+int alloc_algorithm_dynamic(struct gprs_rlcmac_bts *bts, struct gprs_rlcmac_tbf *tbf, bool single,
+			    int8_t use_trx);
+int gprs_alloc_max_dl_slots_per_ms(const struct gprs_rlcmac_bts *bts, uint8_t ms_class);
+
+#ifdef __cplusplus
+}
+#endif