-
Notifications
You must be signed in to change notification settings - Fork 10
/
main.py
282 lines (243 loc) · 12.4 KB
/
main.py
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
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
"""
Copyright (C) 2023 Khandaker Foysal Haque
contact: [email protected]
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 3 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 <https://www.gnu.org/licenses/>.
"""
# Import necessary libraries
import pyshark
import numpy as np
import math
from textwrap import wrap
import argparse
from vmatrices import vmatrices
from bfi_angles import bfi_angles
from utils import hex2dec, flip_hex
# Set the default value for the least significant bit (LSB)
LSB = True
# Check if the script is being run as the main program
if __name__ == '__main__':
# Create a command-line argument parser
parser = argparse.ArgumentParser(description=__doc__)
# Define command-line arguments
parser.add_argument('file_name', help='File name to process')
parser.add_argument('standard', help='which standard are you operating on, options are "AC" or "AX" ')
parser.add_argument('mimo', help='which type of network are you forming, options are "SU" for su-mimo or "MU" for mu-mimo ')
parser.add_argument('config', help='which type of antenna config you have, for now, available options are 3x1 with AC and 4x2 with AX')
parser.add_argument('bw', help='bandwidth of the capture')
parser.add_argument('MAC', help='MAC of the Target Device')
parser.add_argument('num_packet_to_process', help='num_packet_to_process')
parser.add_argument('saved_vmatrices', help='saved_vmatrices')
parser.add_argument('saved_angles', help='saved_angles')
# Parse the command-line arguments
args = parser.parse_args()
# Set variables based on command-line arguments
file_name = 'traces/' + args.file_name
standard = args.standard
mimo = args.mimo
config = args.config
bw = int(args.bw)
MAC = args.MAC
num_packet_to_process = int(args.num_packet_to_process)
saved_vmatrices = 'vmatrix/' + args.saved_vmatrices
saved_angles = 'bfa/' + args.saved_angles
# Check if mu-mimo is selected for AX standard
if mimo == "MU" and standard == "AX":
print("mu-mimo is not available for AX yet, we will add this feature soon")
else:
print("Processing")
# Check standard and set parameters accordingly
if standard == "AC":
# Set subcarrier indices based on bandwidth
if bw == 80:
subcarrier_idxs = np.arange(-122, 123)
pilot_n_null = np.array([-104, -76, -40, -12, -1, 0, 1, 10, 38, 74, 102])
subcarrier_idxs = np.setdiff1d(subcarrier_idxs, pilot_n_null)
elif bw == 40:
subcarrier_idxs = np.arange(-58, 59)
pilot_n_null = np.array([-54, -26, -12, -1, 0, 1, 10, 24, 52])
subcarrier_idxs = np.setdiff1d(subcarrier_idxs, pilot_n_null)
elif bw == 20:
subcarrier_idxs = np.arange(-28, 29)
pilot_n_null = np.array([-21, -8, 0, 6, 21])
subcarrier_idxs = np.setdiff1d(subcarrier_idxs, pilot_n_null)
else:
print("input a valid bandwidth for IEEE 802.11ac")
if standard == "AX":
# Set subcarrier indices based on bandwidth
if bw == 160:
subcarrier_idxs = np.arange(-1012, 1013, 4)
pilot_n_null = np.array([-512, -8, -4, 0, 4, 8, 512])
subcarrier_idxs = np.setdiff1d(subcarrier_idxs, pilot_n_null)
elif bw == 80:
subcarrier_idxs = np.arange(-500, 504, 4)
pilot_n_null = np.array([0])
subcarrier_idxs = np.setdiff1d(subcarrier_idxs, pilot_n_null)
elif bw == 40:
subcarrier_idxs = np.arange(-244, 248, 4)
pilot_n_null = np.array([0])
subcarrier_idxs = np.setdiff1d(subcarrier_idxs, pilot_n_null)
elif bw == 20:
neg_subcarriers = np.setdiff1d(np.arange(-122, 0, 2), np.arange(-118, -2, 4))
pos_subcarriers = np.setdiff1d(np.arange(2, 124, 2), np.arange(6, 122, 4))
subcarrier_idxs = np.concatenate((neg_subcarriers, pos_subcarriers))
else:
print("input a valid bandwidth for IEEE 802.11ac")
# Read packets from the pcap file based on the selected standard
if standard == "AX":
packets = pyshark.FileCapture(
input_file=file_name,
display_filter='wlan.he.mimo.feedback_type==SU && wlan.addr==%s' % (MAC),
use_json=True,
include_raw=True
)._packets_from_tshark_sync() # pcap_dir is the directory of my pcap file
elif standard == "AC":
packets = pyshark.FileCapture(
input_file=file_name,
display_filter='wlan.vht.mimo_control.feedbacktype==%s && wlan.addr==%s' % (mimo, MAC),
use_json=True,
include_raw=True
)._packets_from_tshark_sync()
# Initialize lists to store feedback angles and v-matrices
bfi_angles_all_packets = []
v_matrices_all = []
# Process each packet
for p in range(num_packet_to_process):
# Extract raw frame data from the packet
packet = packets.__next__().frame_raw.value
print('packet___________ ' + str(p) + '\n\n\n')
# Extract header information from the raw frame data
Header_rivision_dec = hex2dec(flip_hex(packet[0:2]))
Header_pad_dec = hex2dec(flip_hex(packet[2:4]))
Header_length_dec = hex2dec(flip_hex(packet[4:8]))
i = Header_length_dec * 2
# Extract various fields from the frame
Frame_Control_Field_hex = packet[i:(i + 4)]
packet_duration = packet[(i + 4):(i + 8)]
packet_destination_mac = packet[(i + 8):(i + 20)]
packet_sender_mac = packet[(i + 20):(i + 32)]
packet_BSS_ID = packet[(i + 32):(i + 44)]
packet_sequence_number = packet[(i + 44):(i + 48)]
packet_HE_category = packet[(i + 48):(i + 50)]
packet_CQI = packet[(i + 50):(i + 52)]
# Extract specific fields for AX or AC standard
if standard == "AX":
packet_mimo_control = packet[(i + 52):(i + 62)]
packet_mimo_control_binary = ''.join(format(int(char, 16), '04b') for char in flip_hex(packet_mimo_control))
codebook_info = packet_mimo_control_binary[30]
packet_snr = packet[(i + 62):(i + 62 + 2*int(config[-1]))]
frame_check_sequence = packet[-8:]
if standard == "AC":
packet_mimo_control = packet[(i + 52):(i + 58)]
packet_mimo_control_binary = ''.join(format(int(char, 16), '04b') for char in flip_hex(packet_mimo_control))
codebook_info = packet_mimo_control_binary[13]
packet_snr = packet[(i + 58):(i + 58 + 2*int(config[-1]))]
frame_check_sequence = packet[-8:]
# Set bits for angles based on mimo type
if mimo == "SU":
if codebook_info == "1":
psi_bit = 4
phi_bit = psi_bit + 2
else:
psi_bit = 2
phi_bit = psi_bit + 2
elif mimo == "MU":
if codebook_info == "1":
psi_bit = 7
phi_bit = psi_bit + 2
else:
psi_bit = 5
phi_bit = psi_bit + 2
if config == "4x2":
# Set parameters for 4x2 antenna configuration
Nc_users = 2 # number of spatial streams
Nr = 4 # number of Tx antennas
phi_numbers = 5
psi_numbers = 5
order_angles = ['phi_11', 'phi_21', 'phi_31', 'psi_21', 'psi_31', 'psi_41', 'phi_22', 'phi_32', 'psi_32',
'psi_42']
order_bits = [phi_bit, phi_bit, phi_bit, psi_bit, psi_bit, psi_bit, phi_bit, phi_bit, psi_bit, psi_bit]
tot_angles_users = phi_numbers + psi_numbers
tot_bits_users = phi_numbers * phi_bit + psi_numbers * psi_bit
elif config == "4x1":
# Set parameters for 4x1 antenna configuration
Nc_users = 1 # number of spatial streams
Nr = 4 # number of Tx antennas
phi_numbers = 3
psi_numbers = 3
order_angles = ['phi_11', 'phi_21', 'phi_31', 'psi_21', 'psi_31', 'psi_41']
order_bits = [phi_bit, phi_bit, phi_bit, psi_bit, psi_bit, psi_bit]
tot_angles_users = phi_numbers + psi_numbers
tot_bits_users = phi_numbers * phi_bit + psi_numbers * psi_bit
elif config == "3x3":
# Set parameters for 3x3 antenna configuration
Nc_users = 3 # number of spatial streams
Nr = 3 # number of Tx antennas
phi_numbers = 3
psi_numbers = 3
order_angles = ['phi_11', 'phi_21', 'psi_21', 'psi_31', 'phi_22', 'psi_32']
order_bits = [phi_bit, phi_bit, psi_bit, psi_bit, phi_bit, psi_bit]
tot_angles_users = phi_numbers + psi_numbers
tot_bits_users = phi_numbers * phi_bit + psi_numbers * psi_bit
elif config == "3x2":
# Set parameters for 3x2 antenna configuration
Nc_users = 2 # number of spatial streams
Nr = 3 # number of Tx antennas
phi_numbers = 3
psi_numbers = 3
order_angles = ['phi_11', 'phi_21', 'psi_21', 'psi_31', 'phi_22', 'psi_32']
order_bits = [phi_bit, phi_bit, psi_bit, psi_bit, phi_bit, psi_bit]
tot_angles_users = phi_numbers + psi_numbers
tot_bits_users = phi_numbers * phi_bit + psi_numbers * psi_bit
elif config == "3x1":
# Set parameters for 3x1 antenna configuration
Nc_users = 1 # number of spatial streams
Nr = 3 # number of Tx antennas
phi_numbers = 2
psi_numbers = 2
order_angles = ['phi_11', 'phi_21', 'psi_21', 'psi_31']
order_bits = [phi_bit, phi_bit, psi_bit, psi_bit]
tot_angles_users = phi_numbers + psi_numbers
tot_bits_users = phi_numbers * phi_bit + psi_numbers * psi_bit
else:
print("the antenna configuration that you have is not available right now, you will update other configurations soon, stay tuned")
# Set constant for valid subcarriers
NSUBC_VALID = len(subcarrier_idxs)
length_angles_users_bits = NSUBC_VALID * tot_bits_users
length_angles_users = math.floor(length_angles_users_bits / 8)
# Extract specific fields for AX or AC standard
if standard == "AX":
Feedback_angles = packet[(i + 62 + 2*int(config[-1])):(len(packet) - 8)]
Feedback_angles_splitted = np.array(wrap(Feedback_angles, 2))
Feedback_angles_bin = ""
if standard == "AC":
#Feedback_angles = packet[(i + 60):(i + 60 + (length_angles_users * 2))]
Feedback_angles = packet[(i + 58 + 2*int(config[-1])):(len(packet) - 8)]
#bfm_report_length = packet[(i + 60 + length_angles_users * 2):(len(packet) - 8)]
Feedback_angles_splitted = np.array(wrap(Feedback_angles, 2))
Feedback_angles_bin = ""
# Convert feedback angles to binary format
for i in range(0, len(Feedback_angles_splitted)):
bin_str = str(format(hex2dec(Feedback_angles_splitted[i]), '08b'))
if LSB:
bin_str = bin_str[::-1]
Feedback_angles_bin += bin_str
# Split the binary feedback angles into chunks for each subcarrier
# for j in range(0, len(subcarrier_idxs)):
# Feed_back_angles_bin_chunk = np.array(wrap(Feedback_angles_bin[:(tot_bits_users * NSUBC_VALID)], tot_bits_users))
Feed_back_angles_bin_chunk = np.array(wrap(Feedback_angles_bin[:(tot_bits_users * NSUBC_VALID)], tot_bits_users))
# Calculate angles and v-matrices and store them in lists
angle = bfi_angles(Feed_back_angles_bin_chunk, LSB, NSUBC_VALID, order_bits)
v_matrices_all.append(vmatrices(angle, phi_bit, psi_bit, NSUBC_VALID, Nr, Nc_users, config))
bfi_angles_all_packets.append(bfi_angles(Feed_back_angles_bin_chunk, LSB, NSUBC_VALID, order_bits))
# Save v-matrices and angles to files
np.save(saved_vmatrices, v_matrices_all)
np.save(saved_angles, bfi_angles_all_packets)