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#!/usr/bin/env python2
# -*- coding: utf-8 -*-
# @file
# @author (C) 2016 by Piotr Krysik <ptrkrysik@gmail.com>
# @section LICENSE
#
# Gr-gsm 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 3, or (at your option)
# any later version.
#
# Gr-gsm 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 gr-gsm; see the file COPYING. If not, write to
# the Free Software Foundation, Inc., 51 Franklin Street,
# Boston, MA 02110-1301, USA.
#
##################################################
# GNU Radio Python Flow Graph
# Title: BCCH + CCCH demapper
# Author: Piotr Krysik
# Description: Demapper for BCCH + CCCH control channels. This corresponds to channel combination iv specified in GSM 05.02, section 6.4
# Generated: Mon May 23 09:32:44 2016
##################################################
from gnuradio import gr
from gnuradio.filter import firdes
import grgsm
class gsm_bcch_ccch_demapper(gr.hier_block2):
def __init__(self, timeslot_nr=0):
gr.hier_block2.__init__(
self, "BCCH + CCCH demapper",
gr.io_signature(0, 0, 0),
gr.io_signature(0, 0, 0),
)
self.message_port_register_hier_in("bursts")
self.message_port_register_hier_out("bursts")
##################################################
# Parameters
##################################################
self.timeslot_nr = timeslot_nr
##################################################
# Blocks
##################################################
# 3GPP TS 45.002 version 15.1.0 Release 15
# Table 3 : Mapping of logical channels onto physical channels (see subclauses 6.3, 6.4, 6.5)
# BCCH Norm D 0,2,4,6 C0 NB 51 B(2..5)
# RACH U 0,2,4,6 C0 AB, Extended AB2 51 B0(0),B1(1)..B50(50)
# Figure 8a: TDMA frame mapping for FCCH + SCH + BCCH + CCCH
self.gsm_universal_ctrl_chans_demapper_0 = grgsm.universal_ctrl_chans_demapper(
timeslot_nr, ([ #downlink
0,0,
2,2,2,2,
6,6,6,6,
0,0,
12,12,12,12,
16,16,16,16,
0,0,
22,22,22,22,
26,26,26,26,
0,0,
32,32,32,32,
36,36,36,36,
0,0,
42,42,42,42,
46,46,46,46,
0,
]), ([
0,0,
1,1,1,1,
2,2,2,2,
0,0,
2,2,2,2,
2,2,2,2,
0,0,
2,2,2,2,
2,2,2,2,
0,0,
2,2,2,2,
2,2,2,2,
0,0,
2,2,2,2,
2,2,2,2,
0,
]), ([
0,0,
0,0,0,0,
0,0,0,0,
0,0,
1,1,1,1,
2,2,2,2,
0,0,
3,3,3,3,
4,4,4,4,
0,0,
5,5,5,5,
6,6,6,6,
0,0,
7,7,7,7,
8,8,8,8,
0,
0,0,0,0,
0,0,0,0,
0,0,0,0,
1,1,1,1,
2,2,2,2,
0,0,
3,3,3,3,
4,4,4,4,
0,0,
5,5,5,5,
6,6,6,6,
0,0,
7,7,7,7,
8,8,8,8,
0,
]), ([ #uplink
0,1,2,3,
4,5,6,7,
8,9,10,11,
12,13,14,15,
16,17,18,19,
20,21,22,23,
24,25,26,27,
28,29,30,31,
32,33,34,35,
36,37,38,39,
40,41,42,43,
44,45,46,47,
48,49,50,
]), ([
3,3,3,3,
3,3,3,3,
3,3,3,3,
3,3,3,3,
3,3,3,3,
3,3,3,3,
3,3,3,3,
3,3,3,3,
3,3,3,3,
3,3,3,3,
3,3,3,3,
3,3,3,3,
3,3,3,
]), ([
0,0,0,0,
0,0,0,0,
0,0,0,0,
0,0,0,0,
0,0,0,0,
0,0,0,0,
0,0,0,0,
0,0,0,0,
0,0,0,0,
0,0,0,0,
0,0,0,0,
0,0,0,0,
0,0,0,
0,0,0,0,
0,0,0,0,
0,0,0,0,
0,0,0,0,
0,0,0,0,
0,0,0,0,
0,0,0,0,
0,0,0,0,
0,0,0,0,
0,0,0,0,
0,0,0,0,
0,0,0,0,
0,0,0,
]))
##################################################
# Connections
##################################################
self.msg_connect((self.gsm_universal_ctrl_chans_demapper_0, 'bursts'), (self, 'bursts'))
self.msg_connect((self, 'bursts'), (self.gsm_universal_ctrl_chans_demapper_0, 'bursts'))
def get_timeslot_nr(self):
return self.timeslot_nr
def set_timeslot_nr(self, timeslot_nr):
self.timeslot_nr = timeslot_nr
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