#!/usr/bin/env python2 # -*- coding: utf-8 -*- # @file # @author (C) 2016 by Piotr Krysik # @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 + SDCCH/4 demapper # Author: Piotr Krysik # Description: Demapper for BCCH + CCCH + SDCCH/4 + SACCH/C4 control channels. This corresponds to channel combination v specified in GSM 05.02, section 6.4 # Generated: Mon May 23 09:32:46 2016 ################################################## from gnuradio import gr from gnuradio.filter import firdes import grgsm class gsm_bcch_ccch_sdcch4_demapper(grgsm.hier_block): def __init__(self, timeslot_nr=0): grgsm.hier_block.__init__( self, "BCCH + CCCH + SDCCH/4 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) # SDCCH/4 0 D 0 C0 NB1 51 B(22..25) # U B(37..40) # 1 D B(26..29) # U B(41..44) # 2 D B(32..35) # U B(47..50) # 3 D B(36..39) # U B(0..3) # SACCH/C4 0 D 0 C0 NB3 102 B(42..45) # U B(57..60) # 1 D B(46..49) # U B(61..64) # 2 D B(93..96) # U B(6..9) # 3 D B(97..100) # U B(10..13) # # Figure 8b: TDMA frame mapping for FCCH + SCH + BCCH + CCCH + SDCCH/4(0...3) + SACCH/4(0...3) # 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, 7,7,7,7, 7,7,7,7, 0,0, 7,7,7,7, 7,7,7,7, 0,0, 135,135,135,135, 135,135,135,135, 0, ]), ([ 0,0, 0,0,0,0, 0,0,0,0, 0,0, 1,1,1,1, 2,2,2,2, 0,0, 0,0,0,0, 1,1,1,1, 0,0, 2,2,2,2, 3,3,3,3, 0,0, 0,0,0,0, 1,1,1,1, 0,0, 0,0,0,0, 0,0,0,0, 0,0, 0, 1,1,1,1, 2,2,2,2, 0,0, 0,0,0,0, 1,1,1,1, 0,0, 2,2,2,2, 3,3,3,3, 0,0, 2,2,2,2, 3,3,3,3, 0, ]), ([ #uplink 0,0,0,0, 4,5, 6,6,6,6, 10,10,10,10, 14,15,16,17, 18,19,20,21, 22,23,24,25, 26,27,28,29, 30,31,32,33, 34,35,36, 37,37,37,37, 41,41,41,41, 45,46, 47,47,47,47, ]), ([ 7,7,7,7, 3,3, 135,135,135,135, 135,135,135,135, 3,3,3,3, 3,3,3,3, 3,3,3,3, 3,3,3,3, 3,3,3,3, 3,3, 3, 7,7,7,7, 7,7,7,7, 3,3, 7,7,7,7, ]), ([ 3,3,3,3, 0,0, 2,2,2,2, 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, 1,1,1,1, 0,0, 2,2,2,2, 3,3,3,3, 0,0, 0,0,0,0, 1,1,1,1, 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, 1,1,1,1, 0,0, 2,2,2,2, ])) ################################################## # 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