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Added concurrent call stat to call spec simulator

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Mark Qvist 2024-05-22 20:13:30 +02:00
parent e6aa9ae25a
commit 8741fedf3f
1 changed files with 15 additions and 9 deletions
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24
docs/utilities/rns_audio_call_calc.py
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@ -14,7 +14,7 @@ def simulate(link_speed=9600, audio_slot_ms=70, codec_rate=1200, method="msgpack
TARGET_MS = audio_slot_ms TARGET_MS = audio_slot_ms
# Packets needed per second for half-duplex audio # Packets needed per second for half-duplex audio
PACKET_PER_SECOND = 1000/TARGET_MS PACKETS_PER_SECOND = 1000/TARGET_MS
# Effective audio encoder bitrate # Effective audio encoder bitrate
CODEC_RATE = codec_rate CODEC_RATE = codec_rate
@ -64,8 +64,12 @@ def simulate(link_speed=9600, audio_slot_ms=70, codec_rate=1200, method="msgpack
# TODO: This should include any additional # TODO: This should include any additional
# airtime consumption such as preamble and TX-tail. # airtime consumption such as preamble and TX-tail.
PACKET_AIRTIME = round(PACKET_LEN*PER_BYTE_LATENCY_MS, 1) PACKET_AIRTIME = PACKET_LEN*PER_BYTE_LATENCY_MS
AIRTIME_PCT = round( (PACKET_AIRTIME/TARGET_MS) * 100, 1) AIRTIME_PCT = (PACKET_AIRTIME/TARGET_MS) * 100
# Maximum amount of concurrent full-duplex
# calls that can coexist on the same channel
CONCURRENT_CALLS = math.floor(100/AIRTIME_PCT)
# Calculate latencies # Calculate latencies
TRANSPORT_LATENCY = round((PHY_OVERHEAD+RNS_OVERHEAD)*PER_BYTE_LATENCY_MS, 1) TRANSPORT_LATENCY = round((PHY_OVERHEAD+RNS_OVERHEAD)*PER_BYTE_LATENCY_MS, 1)
@ -83,7 +87,7 @@ def simulate(link_speed=9600, audio_slot_ms=70, codec_rate=1200, method="msgpack
TOTAL_LATENCY = round(TARGET_MS+PACKET_LATENCY, 1) TOTAL_LATENCY = round(TARGET_MS+PACKET_LATENCY, 1)
print( "\n === Simulation Parameters ===") print( "\n===== Simulation Parameters ===\n")
print(f" Packing method : {method}") print(f" Packing method : {method}")
print(f" Sampling delay : {TARGET_MS}ms") print(f" Sampling delay : {TARGET_MS}ms")
print(f" Codec bitrate : {CODEC_RATE} bps") print(f" Codec bitrate : {CODEC_RATE} bps")
@ -96,7 +100,7 @@ def simulate(link_speed=9600, audio_slot_ms=70, codec_rate=1200, method="msgpack
print(f" On-air length : {PACKET_LEN} bytes") print(f" On-air length : {PACKET_LEN} bytes")
print(f" Packet airtime : {PACKET_AIRTIME}ms") print(f" Packet airtime : {PACKET_AIRTIME}ms")
print( "\n === Results for "+RNS.prettyspeed(LINK_SPEED)+" Link Speed ===") print( "\n===== Results for "+RNS.prettyspeed(LINK_SPEED)+" Link Speed ===\n")
print(f" Final latency : {TOTAL_LATENCY}ms") print(f" Final latency : {TOTAL_LATENCY}ms")
print(f" Recording latency : contributes {TARGET_MS}ms") print(f" Recording latency : contributes {TARGET_MS}ms")
print(f" Packet transport : contributes {PACKET_LATENCY}ms") print(f" Packet transport : contributes {PACKET_LATENCY}ms")
@ -106,8 +110,10 @@ def simulate(link_speed=9600, audio_slot_ms=70, codec_rate=1200, method="msgpack
print(f" Encryption : contributes {ENCRYPTION_LATENCY}ms {E_OPT_STR}") print(f" Encryption : contributes {ENCRYPTION_LATENCY}ms {E_OPT_STR}")
print(f" RNS+PHY overhead : contributes {TRANSPORT_LATENCY}ms") print(f" RNS+PHY overhead : contributes {TRANSPORT_LATENCY}ms")
print(f"") print(f"")
print(f" Half-duplex airtime : {AIRTIME_PCT}% of link capacity") print(f" Half-duplex airtime : {round(AIRTIME_PCT, 2)}% of link capacity")
print(f" Full-duplex airtime : {AIRTIME_PCT*2}% of link capacity") print(f" Concurrent calls : {int(CONCURRENT_CALLS)}\n")
print(f" Full-duplex airtime : {round(AIRTIME_PCT*2, 2)}% of link capacity")
print(f" Concurrent calls : {int(CONCURRENT_CALLS/2)}")
if BLOCK_HEADROOM != 0: if BLOCK_HEADROOM != 0:
print("") print("")
@ -119,5 +125,5 @@ def simulate(link_speed=9600, audio_slot_ms=70, codec_rate=1200, method="msgpack
print( "\n= With mspack =================") print( "\n= With mspack =================")
simulate(method="msgpack") simulate(method="msgpack")
print("\n\n= With protobuf ===============") #print("\n\n= With protobuf ===============")
simulate(method="protobuf") #simulate(method="protobuf")