195 lines
6.2 KiB
Python
195 lines
6.2 KiB
Python
#!/usr/bin/env python2
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# -*- coding: utf-8 -*-
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# @file
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# @author (C) 2016 by Piotr Krysik <ptrkrysik@gmail.com>
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# @section LICENSE
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#
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# Gr-gsm is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 3, or (at your option)
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# any later version.
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#
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# Gr-gsm is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with gr-gsm; see the file COPYING. If not, write to
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# the Free Software Foundation, Inc., 51 Franklin Street,
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# Boston, MA 02110-1301, USA.
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#
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##################################################
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# GNU Radio Python Flow Graph
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# Title: BCCH + CCCH demapper
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# Author: Piotr Krysik
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# Description: Demapper for BCCH + CCCH control channels. This corresponds to channel combination iv specified in GSM 05.02, section 6.4
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# Generated: Mon May 23 09:32:44 2016
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##################################################
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from gnuradio import gr
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from gnuradio.filter import firdes
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import grgsm
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class gsm_bcch_ccch_demapper(gr.hier_block2):
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def __init__(self, timeslot_nr=0):
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gr.hier_block2.__init__(
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self, "BCCH + CCCH demapper",
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gr.io_signature(0, 0, 0),
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gr.io_signature(0, 0, 0),
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)
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self.message_port_register_hier_in("bursts")
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self.message_port_register_hier_out("bursts")
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##################################################
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# Parameters
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##################################################
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self.timeslot_nr = timeslot_nr
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##################################################
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# Blocks
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##################################################
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# 3GPP TS 45.002 version 15.1.0 Release 15
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# Table 3 : Mapping of logical channels onto physical channels (see subclauses 6.3, 6.4, 6.5)
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# BCCH Norm D 0,2,4,6 C0 NB 51 B(2..5)
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# RACH U 0,2,4,6 C0 AB, Extended AB2 51 B0(0),B1(1)..B50(50)
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# Figure 8a: TDMA frame mapping for FCCH + SCH + BCCH + CCCH
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self.gsm_universal_ctrl_chans_demapper_0 = grgsm.universal_ctrl_chans_demapper(
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timeslot_nr, ([ #downlink
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0,0,
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2,2,2,2,
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6,6,6,6,
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0,0,
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12,12,12,12,
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16,16,16,16,
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0,0,
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22,22,22,22,
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26,26,26,26,
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0,0,
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32,32,32,32,
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36,36,36,36,
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0,0,
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42,42,42,42,
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46,46,46,46,
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0,
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]), ([
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0,0,
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1,1,1,1,
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2,2,2,2,
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0,0,
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2,2,2,2,
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2,2,2,2,
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0,0,
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2,2,2,2,
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2,2,2,2,
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0,0,
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2,2,2,2,
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2,2,2,2,
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0,0,
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2,2,2,2,
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2,2,2,2,
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0,
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]), ([
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0,0,
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0,0,0,0,
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0,0,0,0,
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0,0,
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1,1,1,1,
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2,2,2,2,
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0,0,
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3,3,3,3,
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4,4,4,4,
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0,0,
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5,5,5,5,
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6,6,6,6,
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0,0,
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7,7,7,7,
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8,8,8,8,
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0,
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0,0,0,0,
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0,0,0,0,
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0,0,0,0,
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1,1,1,1,
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2,2,2,2,
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0,0,
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3,3,3,3,
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4,4,4,4,
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0,0,
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5,5,5,5,
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6,6,6,6,
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0,0,
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7,7,7,7,
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8,8,8,8,
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0,
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]), ([ #uplink
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0,1,2,3,
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4,5,6,7,
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8,9,10,11,
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12,13,14,15,
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16,17,18,19,
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20,21,22,23,
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24,25,26,27,
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28,29,30,31,
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32,33,34,35,
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36,37,38,39,
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40,41,42,43,
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44,45,46,47,
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48,49,50,
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]), ([
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3,3,3,3,
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3,3,3,3,
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3,3,3,3,
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3,3,3,3,
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3,3,3,3,
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3,3,3,3,
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3,3,3,3,
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3,3,3,3,
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3,3,3,3,
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3,3,3,3,
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3,3,3,3,
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3,3,3,3,
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3,3,3,
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]), ([
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0,0,0,0,
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0,0,0,0,
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0,0,0,0,
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0,0,0,0,
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0,0,0,0,
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0,0,0,0,
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0,0,0,0,
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0,0,0,0,
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0,0,0,0,
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0,0,0,0,
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0,0,0,0,
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0,0,0,0,
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0,0,0,
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0,0,0,0,
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0,0,0,0,
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0,0,0,0,
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0,0,0,0,
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0,0,0,0,
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0,0,0,0,
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0,0,0,0,
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0,0,0,0,
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0,0,0,0,
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0,0,0,0,
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0,0,0,0,
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0,0,0,0,
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0,0,0,
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]))
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##################################################
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# Connections
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##################################################
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self.msg_connect((self.gsm_universal_ctrl_chans_demapper_0, 'bursts'), (self, 'bursts'))
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self.msg_connect((self, 'bursts'), (self.gsm_universal_ctrl_chans_demapper_0, 'bursts'))
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def get_timeslot_nr(self):
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return self.timeslot_nr
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def set_timeslot_nr(self, timeslot_nr):
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self.timeslot_nr = timeslot_nr
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