| #!/usr/bin/env python3 |
| from osmo_gsm_tester.testenv import * |
| |
| import time |
| |
| test_config = tenv.config_test_specific() |
| duration = int(test_config.get('duration', 0)) # 0 = one HO loop |
| threshold = int(test_config.get('threshold', 2)) |
| |
| import pprint |
| print("TEST_CONFIG:\n" + pprint.pformat(test_config)) |
| |
| # attenuation from 0 to 10, then back to 0 |
| cell1_att_li = list(range(0, 11, 1)) + list(range(9, -1, -1)) |
| # attenuation from 10 to 0, then back to 10 |
| cell2_att_li = list(range(10, 0, -1)) + list(range(0, 11, 1)) |
| |
| def do_one_ho_loop(rfemu_cell1, rfemu_cell2): |
| step = 0 |
| while step < len(cell1_att_li): |
| rfemu_cell1.set_attenuation(cell1_att_li[step]) |
| rfemu_cell2.set_attenuation(cell2_att_li[step]) |
| step += 1 |
| sleep(1) |
| |
| epc = tenv.epc() |
| enb = tenv.enb() |
| ue = tenv.modem() |
| iperf3srv = tenv.iperf3srv({'addr': epc.tun_addr()}) |
| iperf3srv.set_run_node(epc.run_node()) |
| iperf3cli = iperf3srv.create_client() |
| iperf3cli.set_run_node(ue.run_node()) |
| |
| epc.subscriber_add(ue) |
| epc.start() |
| enb.ue_add(ue) |
| enb.start(epc) |
| |
| print('waiting for ENB to connect to EPC...') |
| wait(epc.enb_is_connected, enb) |
| print('ENB is connected to EPC') |
| |
| ue.connect(enb) |
| |
| iperf3srv.start() |
| proc = iperf3cli.prepare_test_proc(iperf3cli.DIR_UL, ue.netns(), duration + 30) |
| |
| print('waiting for UE to attach...') |
| wait(ue.is_rrc_connected) |
| print('UE is attached') |
| |
| rfemu_cell1 = enb.get_rfemu(0) |
| rfemu_cell2 = enb.get_rfemu(1) |
| |
| print('Iterating for %d seconds to produce at least %d handovers...' % (duration, threshold)) |
| try: |
| proc.launch() |
| t_end = time.time() + duration |
| if duration == 0: |
| t_end += 1 # allow loop to run once |
| while time.time() < t_end: |
| do_one_ho_loop(rfemu_cell1, rfemu_cell2) |
| num_handovers = ue.get_counter('handover_success') |
| if num_handovers < threshold: |
| raise Exception('Wrong number of handovers %d < threshold %d during %d seconds' % (num_handovers, threshold, duration)) |
| except Exception as e: |
| try: |
| proc.terminate() # make sure we always terminate the process |
| except Exception: |
| print("Exception while terminating process %r" % repr(process)) |
| raise e |
| |
| res_str = 'Got %d successful handovers (>= %d) during %d seconds' % (num_handovers, threshold, duration) |
| print(res_str) |
| test.set_report_stdout(res_str) |
| proc.terminate() |
| proc.wait() |
| print("Done") |