diff --git a/rrlp-ephemeris/rrlp.h b/rrlp-ephemeris/rrlp.h
new file mode 100644
index 0000000..a5e4344
--- /dev/null
+++ b/rrlp-ephemeris/rrlp.h
@@ -0,0 +1,64 @@
+/*
+ * rrlp.h
+ *
+ * RRLP Header
+ *
+ *
+ * Copyright (C) 2009  Sylvain Munaut <tnt@246tNt.com>
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef __RRLP_H__
+#define __RRLP_H__
+
+#include <stdint.h>
+
+#include "gps.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+/* Our internal simplified structure for requests */
+
+#define RRLP_AR_REF_LOC		(1<<0)
+#define RRLP_AR_REF_TIME	(1<<1)
+#define RRLP_AR_UTC_MODEL	(1<<2)
+#define RRLP_AR_IONO_MODEL	(1<<3)
+#define RRLP_AR_ALMANAC		(1<<4)
+#define RRLP_AR_EPHEMERIS	(1<<5)
+
+struct rrlp_assist_req {
+	uint32_t req_elems;
+	uint64_t eph_svs;
+};
+
+
+/* Methods */
+int rrlp_decode_assistance_request(struct rrlp_assist_req *ar,
+	void *req, int req_len);
+
+int rrlp_gps_assist_pdus(
+	struct gps_assist_data *gps_ad, struct rrlp_assist_req *req,
+	void **o_pdu, int *o_len, int o_max_pdus);
+
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __RRLP_H__ */
+